The University of Massachusetts Amherst

Search Results - environmental

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Engineering Triacylglycerol (TAG) biosynthesis pathway for enhance production of oil contents and seed yield
 This invention provides technology for enhanced oil contents and increased seed yield by using a unique combination of seed-specific promoter, terminator, and coding sequences either as a single gene or combination of genes (stacked genes). This technology offers a scalable and sustainable solutions for renewable biofuels energy, agriculture and food production. 
Published: 11/29/2024   |   Inventor(s): Om Parkash Dhankher, Danny Schnell, Sudesh Chhikara
Category(s): Engineering, Environmental, Food technology & plant science
Algal-sludge Granule for Wastewater Treatment and Bioenergy Feedstock Generation
Water and wastewater treatments consume 3-4% of energy, while 60% of energy used at the wastewater treatment plant is dedicated to aeration in the activated sludge process. This novel bio-granule called oxygenic bio-granule, proposes to transform wastewater treatment facilities into water resource recovery facilities. The oxygenic bio-granule results from the conversion of activated sludge under photochemical reactions. It is naturally formed and is composed of algae and bacteria within one granular biomass. The bio-granule is a dense, spherical aggregate of microorganisms that is a self-immobilized biofilm and forms in the absence of solid substratum. The cohabitation of algae and bacteria within the biogranule allows for an efficient symbiotic wastewater treatment process. The bacteria degrade organic matter utilizing O2 that is produced by the algae. In addition, the algae harvest CO2 produced from the organic matter degradation for photosynthesis. The biomass flocculates to be 0.2 to 10mm in size, which allows them to be easily separable from water.
Published: 6/26/2023   |   Inventor(s): Chul Park, Sona Dolan
Category(s): Engineering, Environmental
Deoxybenzoin-based Anti-flammable Polymers and Cured Epoxy Resins
This invention provides novel, deoxybenzoin-based anti-flammable polymers and cured epoxy resins for a variety of end-use applications.
Published: 7/29/2024   |   Inventor(s): Todd Emrick, E. Bryan Coughlin, Bon-Cheol Ku, Thangamani Ranganathan, Michael Beaulieu, Richard Farris
Category(s): Chemicals, Environmental, Material science, Physical Science
Anti-flammable Compounds and Adhesive Materials
This invention provides new chemical compositions and methods for the preparation of adhesive materials with low flammability. The low flammability is due to newly invented organic/polymeric components used in the adhesive formulation, rather than through the addition of a conventional anti-flammable additives such as halogenated organic molecules or phosphorous-containing structures.
Published: 8/10/2023   |   Inventor(s): Todd Emrick, Justin Timmons, Megan Szyndler
Category(s): Chemicals, Environmental, Material science, Physical Science
Geobacter Sulfurreducens Conductive Pili as Biological Nanowires and Uses Thereof

The present invention reports the conductive properties of Geobacter sulfurreducens pili (geopili) and their use in nanotechnology applications. More specifically the present invention provides methods for culturing cells of G. sulfurreducens to produce conductive pili, as well as methods for their isolation and for their modification in order to produce biological nanowires or biological/inorganic hybrid devices with different functionalities.  The invention provides applications for cells expressing native or modified pili as well as for the isolated native or modified pili.

Published: 12/9/2022   |   Inventor(s): Derek Lovley, Gemma Reguera, Kevin McCarthy, Mark Thomas Tuominen
Category(s): Life Sciences, Environmental, Nanotechnology, Biotechnology
Rapid Detection of Penetration of Pesticides, Antibiotices or Other Analytes in Plants and Produce
This invention provides a simple and rapid method for measuring pesticide and/or antibiotic penetration into plants and produce. The method involves the use of surface-enhanced Raman scattering (SERS) mapping for in situ and real-time tracking of the analytes by using metallic nanoparticles as probes.
Published: 8/10/2023   |   Inventor(s): Lili He
Category(s): Environmental, Food technology & plant science, Nanotechnology, Research tools
Method for Reducing Sludge Wasting and Enhancing Bio-hydrogen Generation from the Activated Sludge Process
Treatment and disposal of bio-hazardous sludge accounts for 50-60% of the operational costs at a wastewater treatment plant. To treat this sludge, it undergoes a process involving thickening, conditioning, and dewatering, followed by transport to a landfill or incinerator. In addition to high costs, landfilling and incineration are detrimental from a sustainability standpoint.

 

In this patented invention, a closed, anaerobic, completely stirred tank side stream reactor is added after the outlet of the settling tank at the wastewater treatment plant. Solids retention time in the reactor is short (< 4 days), keeping its size and cost down. The acidic and anaerobic environment of the reactor causes biomass to deflocculate and sludge to hydrolyze, ultimately reducing sludge by 60%. The invention also has the added benefit of producing hydrogen and methane fuel. 

Published: 6/26/2023   |   Inventor(s): Chul Park, Dong Hyun Chon
Category(s): Clean Energy, Environmental, Engineering, Chemicals
Production of Specialty Chemicals with Carbon Dioxide Serving as the Carbon Source
Concerns of resource supply and climate change motivate the shift away from fuels and chemicals derived from fossil fuels towards domestic, sustainable production. The inventors’ patented technology presents a new way of doing this, using microorganisms that are able to take in CO2, water, and electricity and synthesize carbonaceous fuels and chemicals, akin to a reverse microbial fuel cell.

 

In “microbial electrosynthesis,” a term coined by the inventors, an anode and cathode are connected to a source of electrical power and separated by a permeable membrane. Electron-accepting microorganisms are coated on a cathode, where they reduce CO2 to multi-carbon products, while water is oxidized to oxygen at the anode. For example, the production of acetate would proceed as follows:

 

Anode: 4H2O --> 8H+ + 8e- + 2O2

Cathode: 2CO2 + 8H+ + 8e- --> CH3COOH + 2H2O

Overall: 2CO2 + 2H2O --> CH3COOH + 2O2

 

In addition to acetate, production of ethanol, butanol, propanol, formate, and 2-oxobutyrate have been demonstrated.

Published: 12/12/2022   |   Inventor(s): Kelly Nevin Lovley, Derek Lovley
Category(s): Chemicals, Clean Energy, Environmental
Aerobic Microbial Fuel Cell
Microbial fuel cells (MFCs) convert organic matter into electrical energy, and find applications in electricity generation and sensor powering for soil, salt and fresh water, and commercial waste environments. Typically, the anode chamber of the MFC must be kept under anaerobic conditions because of anoxic requirements for the bacteria. This both increases engineering costs and impedes proton transfer from the anode to the cathode.

 

Dr. Kelly Nevin Lovley and Dr. Derek Lovley patented an aerobic MFC anode electrode, allowing for the aerobic operation of an MFC. In their single-chambered design, an internal reservoir of fuel-bearing liquid is created at the anode. The anode is porous, allowing the fuel (e.g. acetate) to diffuse out and form a thick layer. At the outer layer of biofilm, oxygen will be reduced to water and the acetate fuel will be oxidized to CO2. This outer layer protects the inner layer from rapid oxidation, allowing the bacteria to generate current for weeks at a time.

Published: 12/12/2022   |   Inventor(s): Kelly Nevin Lovley, Derek Lovley
Category(s): Biotechnology, Life Sciences, Environmental
A Rapid and Senstivie Method for the Dectection of Bacteria in Food Matrices and Water
This invention provides a rapid and sensitive method for the detection of bacteria in food matrices and water. The method integrates the sensitive surface-enhanced Raman Scattering (SERS) technique and the advanced Raman mapping technique to identify and quantify bacteria.
Published: 8/10/2023   |   Inventor(s): Lili He
Category(s): Food technology & plant science, Environmental, Nanotechnology
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