This document describes an elective on energy harvesting that will discuss harnessing renewable energy from the environment, including an overview of energy harvesting, applications, and a hands-on activity where students will characterize solar panels and use the energy to power loads like LEDs, motors, and buzzers. Students will also design a scenario to power a 3 room apartment using solar energy under constraints set by the owner.
What is energy harvesting?
What are some of its applications?
Can we make that at home?
#WikiCourses
https://wikicourses.wikispaces.com/XTopic+Energy+Harvesting
Piezoelectric electric based energy harvestingSubash John
Piezoelectric materials can generate an electric charge when subjected to mechanical stress. This phenomenon known as the piezoelectric effect enables piezoelectric materials to convert mechanical vibrational energy into electrical energy through a process known as energy harvesting. Common sources of vibration that can be used for piezoelectric energy harvesting include footsteps on sidewalks, movements from gym equipment, and vibrations from vehicles. The electric energy produced can be stored in batteries or capacitors and used to power small electronic devices. Piezoelectric materials have applications in various technologies including ultrasound imaging, sensors, musical instruments, and automotive engine management systems.
The document describes energy harvesting trees, also known as solar botanic trees. These trees harness renewable energy from the sun, wind, and rain through advanced nano-technologies. The trees consist of nanoleaves, a long tower, LEDs, batteries, and stems connecting the nanoleaves. Nanoleaves generate power from sunlight and wind via the flapping motion, while piezoelectric ribbons in the stems create energy from wind-induced vibrations. Compared to traditional solar panels, these trees require less land for equivalent power generation and provide an efficient, eco-friendly renewable energy solution especially for densely populated areas.
Paul Ahern - Piezoelectric Energy Harvesting ReviewPaul Ahern
Mechanical energy is among the most plentiful and consistent energy sources in our day-to-day lives, which is available to us regardless of the whims of the weather or the cycles of day and night. Piezoelectric Energy Harvesters (PEH’s) are compact devices which allow the scavenging of low grade energy from ambient sources such as human and environmental vibrations, with the aim of using this energy to power autonomous electronic devices. Many decades of research and development in the field has led to commercially available devices based on piezoelectric materials which can be used to harvest milliwatts of energy from mechanical sources such as vibration, stress or strain.
RF MEMS have potential for energy harvesting by converting electromagnetic energy into electrical charge. The proposed RF MEMS design aims to be scalable and easily integrated in microsystems, unlike existing MEMS energy harvesters that have low efficiency, scaling issues, and high costs. RF MEMS can be fabricated using processes like co-planar waveguide deposition, lithography, aluminum deposition and patterning, and sacrificial layer removal. When activated, the RF MEMS structure can store up to 35 pC of charge per cycle that is generated from the membrane's overlap with the signal isolation layer. However, reliability issues from electrostatic discharge still need to be addressed for practical applications in wireless sensors.
These slides use concepts from my (Jeff Funk) course entitled analyzing hi-tech opportunities to show how energy harvesters are becoming more economically feasible for the Internet of Things (IoT). Small amounts of energy can be harvested from vibrations, temperature differences, and radio frequencies using various types of electronic devices such as piezoelectric, MEMS, thermo-electric power generators, and other devices. As improvements in them occur and as the energy requirements of accelerometers, pressure sensors, gas detectors, bio-sensors, and readout circuits fall from microwatts to hundreds of nano-watts, energy harvesters become cheaper and better than are batteries. Improvements in energy harvesting are occurring in the form of higher power per area or higher power per temperature difference and improvements of about five times are expected to occur in the next 5 to 10 years. The market for energy harvesters is expected to reach $2.5 Billion by 2024. In addition to their impact on buildings and the other usual applications for IoT, they will also impact on agriculture, aircraft, and medical implants.
Nano leaves could provide a solution to future energy crises by harnessing solar, thermal, and wind energy through biomimicry of plant leaves. They would consist of nano-photovoltaic, thermoelectric and piezoelectric cells embedded between conductive nano sheets to generate electricity from light, heat and motion like wind. A nano tree producing around 7,000 kWh per year could cost $12,000-$20,000 but last over 20 years, making it cost effective compared to other renewable energy sources. Nano leaves have applications in deserts, parks, and industrial areas to provide green energy and shade.
This document describes an elective on energy harvesting that will discuss harnessing renewable energy from the environment, including an overview of energy harvesting, applications, and a hands-on activity where students will characterize solar panels and use the energy to power loads like LEDs, motors, and buzzers. Students will also design a scenario to power a 3 room apartment using solar energy under constraints set by the owner.
What is energy harvesting?
What are some of its applications?
Can we make that at home?
#WikiCourses
https://wikicourses.wikispaces.com/XTopic+Energy+Harvesting
Piezoelectric electric based energy harvestingSubash John
Piezoelectric materials can generate an electric charge when subjected to mechanical stress. This phenomenon known as the piezoelectric effect enables piezoelectric materials to convert mechanical vibrational energy into electrical energy through a process known as energy harvesting. Common sources of vibration that can be used for piezoelectric energy harvesting include footsteps on sidewalks, movements from gym equipment, and vibrations from vehicles. The electric energy produced can be stored in batteries or capacitors and used to power small electronic devices. Piezoelectric materials have applications in various technologies including ultrasound imaging, sensors, musical instruments, and automotive engine management systems.
The document describes energy harvesting trees, also known as solar botanic trees. These trees harness renewable energy from the sun, wind, and rain through advanced nano-technologies. The trees consist of nanoleaves, a long tower, LEDs, batteries, and stems connecting the nanoleaves. Nanoleaves generate power from sunlight and wind via the flapping motion, while piezoelectric ribbons in the stems create energy from wind-induced vibrations. Compared to traditional solar panels, these trees require less land for equivalent power generation and provide an efficient, eco-friendly renewable energy solution especially for densely populated areas.
Paul Ahern - Piezoelectric Energy Harvesting ReviewPaul Ahern
Mechanical energy is among the most plentiful and consistent energy sources in our day-to-day lives, which is available to us regardless of the whims of the weather or the cycles of day and night. Piezoelectric Energy Harvesters (PEH’s) are compact devices which allow the scavenging of low grade energy from ambient sources such as human and environmental vibrations, with the aim of using this energy to power autonomous electronic devices. Many decades of research and development in the field has led to commercially available devices based on piezoelectric materials which can be used to harvest milliwatts of energy from mechanical sources such as vibration, stress or strain.
RF MEMS have potential for energy harvesting by converting electromagnetic energy into electrical charge. The proposed RF MEMS design aims to be scalable and easily integrated in microsystems, unlike existing MEMS energy harvesters that have low efficiency, scaling issues, and high costs. RF MEMS can be fabricated using processes like co-planar waveguide deposition, lithography, aluminum deposition and patterning, and sacrificial layer removal. When activated, the RF MEMS structure can store up to 35 pC of charge per cycle that is generated from the membrane's overlap with the signal isolation layer. However, reliability issues from electrostatic discharge still need to be addressed for practical applications in wireless sensors.
These slides use concepts from my (Jeff Funk) course entitled analyzing hi-tech opportunities to show how energy harvesters are becoming more economically feasible for the Internet of Things (IoT). Small amounts of energy can be harvested from vibrations, temperature differences, and radio frequencies using various types of electronic devices such as piezoelectric, MEMS, thermo-electric power generators, and other devices. As improvements in them occur and as the energy requirements of accelerometers, pressure sensors, gas detectors, bio-sensors, and readout circuits fall from microwatts to hundreds of nano-watts, energy harvesters become cheaper and better than are batteries. Improvements in energy harvesting are occurring in the form of higher power per area or higher power per temperature difference and improvements of about five times are expected to occur in the next 5 to 10 years. The market for energy harvesters is expected to reach $2.5 Billion by 2024. In addition to their impact on buildings and the other usual applications for IoT, they will also impact on agriculture, aircraft, and medical implants.
Nano leaves could provide a solution to future energy crises by harnessing solar, thermal, and wind energy through biomimicry of plant leaves. They would consist of nano-photovoltaic, thermoelectric and piezoelectric cells embedded between conductive nano sheets to generate electricity from light, heat and motion like wind. A nano tree producing around 7,000 kWh per year could cost $12,000-$20,000 but last over 20 years, making it cost effective compared to other renewable energy sources. Nano leaves have applications in deserts, parks, and industrial areas to provide green energy and shade.
Powercast Overview - RF Energy Harvesting and Wireless Power for Micro-Power ...Powercast Corporation
This document discusses RF energy harvesting and wireless power transmission for low-power applications. It describes how microwatts of power transmitted over radio waves can be used to trickle charge batteries or power battery-free devices. Key factors that determine the received power are the power of the RF source, distance from the source, size of the receiving antenna, and transmission frequency. Examples of applications that could benefit from this technology include wireless sensors for industrial monitoring and smart buildings.
Vibration Energy Harvesting: Going Beyond Idealizationjwcryns
This document summarizes research conducted on experimental analysis of a piezoelectric energy harvesting system under various vibration conditions. The research aims to show that accurate experimental testing is essential for harvester development by determining the implications of complex vibration characteristics on harvester performance. The research tests a commercially available piezoelectric transducer and conditioning circuit under harmonic, random, and sine on random vibration scenarios. The results show that theoretical power harvesting predictions require simplifying assumptions about input vibration and transducer characteristics that do not apply to real-world conditions. Testing more complex vibration profiles provides a more accurate representation of ambient vibrations and is valuable for harvester development.
The slides for a presentation on Energy harvesting and the state off the art designs currently taking advantage of the energy around us.
Energy harvesting (also known as power harvesting or energy scavenging) is the process by which energy is derived from external sources (e.g.solar power, thermal energy, wind energy, salinity gradients, and kinetic energy), captured, and stored for small, wireless autonomous devices, like those used in wearable electronics and wireless sensor networks.
Credits: A thanks go out to Johan Pedersen for introducing me to the subject a great workshop and use of some of his slides.
This document discusses electrical rectification in vibrational energy harvesting technologies. It begins with an overview of simple half-wave and full-wave rectifier circuits used to convert alternating current (AC) output from energy harvesters into direct current (DC) needed to power electronic devices. The document then examines case studies of different harvester technologies, including electrostatic, piezoelectric, electromagnetic, and radio frequency harvesting. It concludes by recommending areas for future research, such as developing standards, creating adaptive intelligent systems, advancing nanoscale devices, improving systems integration, and exploring new materials and hybrid devices.
The document discusses energy harvesting solutions from Spansion to eliminate the need for batteries and fuel the Internet of Things. It introduces the MB39C811 and MB39C831 power management integrated circuits (PMICs) that can harvest energy from light, vibration, and heat to power wireless sensor nodes and other devices. Evaluation boards and a starter kit are also described to help developers test energy harvesting solutions using these new PMICs.
The document discusses RF energy harvesting, which involves collecting ambient radio frequency energy from sources like TV and cell phone towers to power devices. It describes the concept of using a receiver to collect RF energy and convert it to DC power. The harvesting unit is explained as consisting of an antenna, impedance matching, rectifier to convert RF to DC, and storage components. Different types of antennas and considerations for impedance matching networks are also covered. The document concludes by noting advantages of RF energy harvesting like free wireless power but also challenges of low ambient power levels and conversion efficiency.
This document provides information on Dissociative Identity Disorder (DID), formerly known as Multiple Personality Disorder. It discusses skepticism around DID and explains that dissociation exists on a spectrum from mild daydreaming to more severe identity fragmentation. The document outlines characteristics of DID like disturbances in identity, existence of distinct alters, and types of relationships between alters. Causes like childhood trauma and abuse are explored, as are popular portrayals of DID in films and books. Assessment tools, integration in therapy, and two case studies of individuals with DID are summarized.
MPD, also known as Dissociative Identity Disorder or DID, is characterized by a person's identity fragmenting into two or more distinct personalities. It is caused by severe physical and psychological trauma, often abuse, in early childhood. The diagnosis requires evidence of distinct personalities along with memory gaps that are too extensive to be explained by ordinary forgetfulness. While some question if it is real, psychologists who treat MPD patients believe the disorder manifests real suffering in those diagnosed.
This document provides an overview of the programs, courses, achievements and facilities at DAV College. It discusses the college's accreditations and awards, 22 arts subjects, 10 science streams and 5 commerce streams offered at the undergraduate level. It also lists the 8 postgraduate subjects, 19 diploma/certificate courses and 11 career-oriented add-on courses available. The college has achievements in sports and culture at international and national levels. It offers hobby courses, community college programs, and vocational courses approved by UGC in fields like software development, hospitality management, medical lab technology and beauty & wellness. The campus facilities include libraries, labs, sports facilities, auditorium and hostels.
Linda Drabik - Energy harvesting for IoTWithTheBest
As sensors and actuators are deployed in increasing numbers across greater distances, autonomous devices will become more ubiquitous. For systems that require longer life than a primary battery can deliver, Energy Harvesting offers a promising solution.
Energy Harvesting (EH) is the process by which ambient energy is captured from one or more energy sources and stored for later use. It enables autonomous sensors or switches to perpetually run with little to no maintenance, eliminating the need for connection to an electric grid and overcoming limitations of a battery-only power source with limited energy storage.
While the cost of buying and disposing batteries is a significant consideration, it’s the operational drain of maintenance that makes Energy Harvesting a particularly attractive solution for IoT.
In this presentation:
- Energy Harvesting solutions, including those that convert sources such as light, vibration, and heat into electricity (solar cells, piezoelectric devices, and thermoelectric generators).
- Key considerations for an Energy Harvesting terminal, including optimal capacitor size.
Linda Brabik, Founder/Organizer, IoT NY Meetup
Bullying is unwanted aggressive behavior among school-aged children that involves a real or perceived power imbalance. It is repetitive and can seriously harm both the children being bullied and those who bully. Bullying includes verbal threats, spreading rumors, physical attacks, and social exclusion. While teasing is sometimes part of childhood, it becomes bullying when it is repetitive or intended to hurt. Bullying affects 20-30% of school children and can begin in preschool, intensifying during transitions like starting middle school. Victims often have low self-esteem and poor social skills, making them targets. Both bullies and victims can suffer long-term effects on mental health, relationships, and academic performance. Warning signs in children include
Improving the viability of probiotics by encapsulation methods for developmen...Open Access Research Paper
The popularity of functional foods among scientists and common people has been increasing day by day. Awareness and modernization make the consumer think better regarding food and nutrition. Now a day’s individual knows very well about the relation between food consumption and disease prevalence. Humans have a diversity of microbes in the gut that together form the gut microflora. Probiotics are the health-promoting live microbial cells improve host health through gut and brain connection and fighting against harmful bacteria. Bifidobacterium and Lactobacillus are the two bacterial genera which are considered to be probiotic. These good bacteria are facing challenges of viability. There are so many factors such as sensitivity to heat, pH, acidity, osmotic effect, mechanical shear, chemical components, freezing and storage time as well which affects the viability of probiotics in the dairy food matrix as well as in the gut. Multiple efforts have been done in the past and ongoing in present for these beneficial microbial population stability until their destination in the gut. One of a useful technique known as microencapsulation makes the probiotic effective in the diversified conditions and maintain these microbe’s community to the optimum level for achieving targeted benefits. Dairy products are found to be an ideal vehicle for probiotic incorporation. It has been seen that the encapsulated microbial cells show higher viability than the free cells in different processing and storage conditions as well as against bile salts in the gut. They make the food functional when incorporated, without affecting the product sensory characteristics.
Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...Joshua Orris
The incorporation of a 3DCSM and completion of HRSC provided a tool for enhanced, data-driven, decisions to support a change in remediation closure strategies. Currently, an approved pilot study has been obtained to shut-down the remediation systems (ISCO, P&T) and conduct a hydraulic study under non-pumping conditions. A separate micro-biological bench scale treatability study was competed that yielded positive results for an emerging innovative technology. As a result, a field pilot study has commenced with results expected in nine-twelve months. With the results of the hydraulic study, field pilot studies and an updated risk assessment leading site monitoring optimization cost lifecycle savings upwards of $15MM towards an alternatively evolved best available technology remediation closure strategy.
Powercast Overview - RF Energy Harvesting and Wireless Power for Micro-Power ...Powercast Corporation
This document discusses RF energy harvesting and wireless power transmission for low-power applications. It describes how microwatts of power transmitted over radio waves can be used to trickle charge batteries or power battery-free devices. Key factors that determine the received power are the power of the RF source, distance from the source, size of the receiving antenna, and transmission frequency. Examples of applications that could benefit from this technology include wireless sensors for industrial monitoring and smart buildings.
Vibration Energy Harvesting: Going Beyond Idealizationjwcryns
This document summarizes research conducted on experimental analysis of a piezoelectric energy harvesting system under various vibration conditions. The research aims to show that accurate experimental testing is essential for harvester development by determining the implications of complex vibration characteristics on harvester performance. The research tests a commercially available piezoelectric transducer and conditioning circuit under harmonic, random, and sine on random vibration scenarios. The results show that theoretical power harvesting predictions require simplifying assumptions about input vibration and transducer characteristics that do not apply to real-world conditions. Testing more complex vibration profiles provides a more accurate representation of ambient vibrations and is valuable for harvester development.
The slides for a presentation on Energy harvesting and the state off the art designs currently taking advantage of the energy around us.
Energy harvesting (also known as power harvesting or energy scavenging) is the process by which energy is derived from external sources (e.g.solar power, thermal energy, wind energy, salinity gradients, and kinetic energy), captured, and stored for small, wireless autonomous devices, like those used in wearable electronics and wireless sensor networks.
Credits: A thanks go out to Johan Pedersen for introducing me to the subject a great workshop and use of some of his slides.
This document discusses electrical rectification in vibrational energy harvesting technologies. It begins with an overview of simple half-wave and full-wave rectifier circuits used to convert alternating current (AC) output from energy harvesters into direct current (DC) needed to power electronic devices. The document then examines case studies of different harvester technologies, including electrostatic, piezoelectric, electromagnetic, and radio frequency harvesting. It concludes by recommending areas for future research, such as developing standards, creating adaptive intelligent systems, advancing nanoscale devices, improving systems integration, and exploring new materials and hybrid devices.
The document discusses energy harvesting solutions from Spansion to eliminate the need for batteries and fuel the Internet of Things. It introduces the MB39C811 and MB39C831 power management integrated circuits (PMICs) that can harvest energy from light, vibration, and heat to power wireless sensor nodes and other devices. Evaluation boards and a starter kit are also described to help developers test energy harvesting solutions using these new PMICs.
The document discusses RF energy harvesting, which involves collecting ambient radio frequency energy from sources like TV and cell phone towers to power devices. It describes the concept of using a receiver to collect RF energy and convert it to DC power. The harvesting unit is explained as consisting of an antenna, impedance matching, rectifier to convert RF to DC, and storage components. Different types of antennas and considerations for impedance matching networks are also covered. The document concludes by noting advantages of RF energy harvesting like free wireless power but also challenges of low ambient power levels and conversion efficiency.
This document provides information on Dissociative Identity Disorder (DID), formerly known as Multiple Personality Disorder. It discusses skepticism around DID and explains that dissociation exists on a spectrum from mild daydreaming to more severe identity fragmentation. The document outlines characteristics of DID like disturbances in identity, existence of distinct alters, and types of relationships between alters. Causes like childhood trauma and abuse are explored, as are popular portrayals of DID in films and books. Assessment tools, integration in therapy, and two case studies of individuals with DID are summarized.
MPD, also known as Dissociative Identity Disorder or DID, is characterized by a person's identity fragmenting into two or more distinct personalities. It is caused by severe physical and psychological trauma, often abuse, in early childhood. The diagnosis requires evidence of distinct personalities along with memory gaps that are too extensive to be explained by ordinary forgetfulness. While some question if it is real, psychologists who treat MPD patients believe the disorder manifests real suffering in those diagnosed.
This document provides an overview of the programs, courses, achievements and facilities at DAV College. It discusses the college's accreditations and awards, 22 arts subjects, 10 science streams and 5 commerce streams offered at the undergraduate level. It also lists the 8 postgraduate subjects, 19 diploma/certificate courses and 11 career-oriented add-on courses available. The college has achievements in sports and culture at international and national levels. It offers hobby courses, community college programs, and vocational courses approved by UGC in fields like software development, hospitality management, medical lab technology and beauty & wellness. The campus facilities include libraries, labs, sports facilities, auditorium and hostels.
Linda Drabik - Energy harvesting for IoTWithTheBest
As sensors and actuators are deployed in increasing numbers across greater distances, autonomous devices will become more ubiquitous. For systems that require longer life than a primary battery can deliver, Energy Harvesting offers a promising solution.
Energy Harvesting (EH) is the process by which ambient energy is captured from one or more energy sources and stored for later use. It enables autonomous sensors or switches to perpetually run with little to no maintenance, eliminating the need for connection to an electric grid and overcoming limitations of a battery-only power source with limited energy storage.
While the cost of buying and disposing batteries is a significant consideration, it’s the operational drain of maintenance that makes Energy Harvesting a particularly attractive solution for IoT.
In this presentation:
- Energy Harvesting solutions, including those that convert sources such as light, vibration, and heat into electricity (solar cells, piezoelectric devices, and thermoelectric generators).
- Key considerations for an Energy Harvesting terminal, including optimal capacitor size.
Linda Brabik, Founder/Organizer, IoT NY Meetup
Bullying is unwanted aggressive behavior among school-aged children that involves a real or perceived power imbalance. It is repetitive and can seriously harm both the children being bullied and those who bully. Bullying includes verbal threats, spreading rumors, physical attacks, and social exclusion. While teasing is sometimes part of childhood, it becomes bullying when it is repetitive or intended to hurt. Bullying affects 20-30% of school children and can begin in preschool, intensifying during transitions like starting middle school. Victims often have low self-esteem and poor social skills, making them targets. Both bullies and victims can suffer long-term effects on mental health, relationships, and academic performance. Warning signs in children include
Improving the viability of probiotics by encapsulation methods for developmen...Open Access Research Paper
The popularity of functional foods among scientists and common people has been increasing day by day. Awareness and modernization make the consumer think better regarding food and nutrition. Now a day’s individual knows very well about the relation between food consumption and disease prevalence. Humans have a diversity of microbes in the gut that together form the gut microflora. Probiotics are the health-promoting live microbial cells improve host health through gut and brain connection and fighting against harmful bacteria. Bifidobacterium and Lactobacillus are the two bacterial genera which are considered to be probiotic. These good bacteria are facing challenges of viability. There are so many factors such as sensitivity to heat, pH, acidity, osmotic effect, mechanical shear, chemical components, freezing and storage time as well which affects the viability of probiotics in the dairy food matrix as well as in the gut. Multiple efforts have been done in the past and ongoing in present for these beneficial microbial population stability until their destination in the gut. One of a useful technique known as microencapsulation makes the probiotic effective in the diversified conditions and maintain these microbe’s community to the optimum level for achieving targeted benefits. Dairy products are found to be an ideal vehicle for probiotic incorporation. It has been seen that the encapsulated microbial cells show higher viability than the free cells in different processing and storage conditions as well as against bile salts in the gut. They make the food functional when incorporated, without affecting the product sensory characteristics.
Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...Joshua Orris
The incorporation of a 3DCSM and completion of HRSC provided a tool for enhanced, data-driven, decisions to support a change in remediation closure strategies. Currently, an approved pilot study has been obtained to shut-down the remediation systems (ISCO, P&T) and conduct a hydraulic study under non-pumping conditions. A separate micro-biological bench scale treatability study was competed that yielded positive results for an emerging innovative technology. As a result, a field pilot study has commenced with results expected in nine-twelve months. With the results of the hydraulic study, field pilot studies and an updated risk assessment leading site monitoring optimization cost lifecycle savings upwards of $15MM towards an alternatively evolved best available technology remediation closure strategy.
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...Open Access Research Paper
Water polluted by dyestuffs compounds is a global threat to health and the environment; accordingly, we prepared a green novel sorbent chemical and Physical system from an algae, chitosan and chitosan nanoparticle and impregnated with algae with chitosan nanocomposite for the sorption of Malachite green dye from water. The algae with chitosan nanocomposite by a simple method and used as a recyclable and effective adsorbent for the removal of malachite green dye from aqueous solutions. Algae, chitosan, chitosan nanoparticle and algae with chitosan nanocomposite were characterized using different physicochemical methods. The functional groups and chemical compounds found in algae, chitosan, chitosan algae, chitosan nanoparticle, and chitosan nanoparticle with algae were identified using FTIR, SEM, and TGADTA/DTG techniques. The optimal adsorption conditions, different dosages, pH and Temperature the amount of algae with chitosan nanocomposite were determined. At optimized conditions and the batch equilibrium studies more than 99% of the dye was removed. The adsorption process data matched well kinetics showed that the reaction order for dye varied with pseudo-first order and pseudo-second order. Furthermore, the maximum adsorption capacity of the algae with chitosan nanocomposite toward malachite green dye reached as high as 15.5mg/g, respectively. Finally, multiple times reusing of algae with chitosan nanocomposite and removing dye from a real wastewater has made it a promising and attractive option for further practical applications.
Optimizing Post Remediation Groundwater Performance with Enhanced Microbiolog...Joshua Orris
Results of geophysics and pneumatic injection pilot tests during 2003 – 2007 yielded significant positive results for injection delivery design and contaminant mass treatment, resulting in permanent shut-down of an existing groundwater Pump & Treat system.
Accessible source areas were subsequently removed (2011) by soil excavation and treated with the placement of Emulsified Vegetable Oil EVO and zero-valent iron ZVI to accelerate treatment of impacted groundwater in overburden and weathered fractured bedrock. Post pilot test and post remediation groundwater monitoring has included analyses of CVOCs, organic fatty acids, dissolved gases and QuantArray® -Chlor to quantify key microorganisms (e.g., Dehalococcoides, Dehalobacter, etc.) and functional genes (e.g., vinyl chloride reductase, methane monooxygenase, etc.) to assess potential for reductive dechlorination and aerobic cometabolism of CVOCs.
In 2022, the first commercial application of MetaArray™ was performed at the site. MetaArray™ utilizes statistical analysis, such as principal component analysis and multivariate analysis to provide evidence that reductive dechlorination is active or even that it is slowing. This creates actionable data allowing users to save money by making important site management decisions earlier.
The results of the MetaArray™ analysis’ support vector machine (SVM) identified groundwater monitoring wells with a 80% confidence that were characterized as either Limited for Reductive Decholorination or had a High Reductive Reduction Dechlorination potential. The results of MetaArray™ will be used to further optimize the site’s post remediation monitoring program for monitored natural attenuation.