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  • Soil
  • A peer-reviewed report of the work shows 91% biodegradation in a soil environment within 24 months, when tested in accordance with ISO 17556. (wikipedia.org)
  • Explosives and their residual post explosion products can partition between multiple environmental compartments including aquatic, soil, atmosphere, and the biosphere. (wikipedia.org)
  • biodegradable
  • The claim is therefore deceptive Since there are no pass-fail tests for "biodegradable" plastic bags, manufacturers must print on the product the environmental requirements for biodegradation to take place, time frame and end results in order to be within US Trade Requirements. (wikipedia.org)
  • In 2007, the State of California essentially made the term "biodegradable bags" illegal, unless such terms are "substantiated by competent and reliable evidence to prevent deceiving or misleading consumers about environmental impact of degradable, compostable, and biodegradable plastic bags, food service ware, and packaging. (wikipedia.org)
  • organic
  • Standard biodegradation tests aimed at measuring these parameters generally ignore the ubiquitous occurrence of assimilable organic carbon (AOC) in experimental systems which can be present at concentrations exceeding the concentration of the target substrate. (asm.org)
  • The large number of synthetic organic chemicals currently in production presents a huge challenge for timely collection of detailed environmental data on each compound. (wikipedia.org)
  • Processes
  • Our work provides novel insights into the kinetics of biodegradation processes and growth yields at low substrate concentrations. (asm.org)
  • Concurrent to biodegradation, abiotic processes were observed in the experiments, rapid oxidative formation of disulfides (dimerisation of monomercaptans and cyclisation of dimercaptans) and hydrolysis of esters. (deepdyve.com)
  • Chemistry
  • However, there is also some use in consumer products, ruecker@leuphana.de e.g. several thousand tons per year of thioglycolic acid and its 1 salts go into cosmetic and cleaning formulations and are there- Institute of Sustainable and Environmental Chemistry, Leuphana fore released to the environment directly or indirectly via sew- University Lüneburg, Universitätsallee 1, 21335 Lüneburg, Germany 2 age treatment plants. (deepdyve.com)
  • Environmental Toxicology and Chemistry. (wikipedia.org)
  • biodegradability
  • While a persistent chemical is a potential threat to Biodegradability in an aerobic aquatic phase is a key ele- the environment, a chemical that is readily biodegraded to ment in the environmental assessment of chemicals and is products such as CO and H O (mineralisation) will not 2 2 therefore generally considered in national and international cause any harm to the environment. (deepdyve.com)
  • groundwater
  • Initial monitoring conducted during the cooling period indicated that a dissolved plume remained in some portions of the treatment zone at concentrations greater than several thousand μg/L. The ratio of biodegradation daughter products to PCE in groundwater was significantly greater than prior to implementation of ERH. (environmental-expert.com)
  • acid
  • Mercaptocarboxylic acids Mercaptocarboxylic acid esters Mercaptans Biodegradation rules of thumb Introduction minimise the release of persistent chemicals into the envi- ronment. (deepdyve.com)
  • Insights
  • According to a bottled water survey conducted by Perception Research Services International (PRS) for Brand Packaging published in August 2011, where shoppers were interviewed in person to gain some insights on marketing claims, environmental and recycling messages were misunderstood and not even noticed by a majority of consumers interviewed. (environmental-expert.com)
  • Plastics
  • The success and dominance of plastics starting in the early 20th century led to environmental concerns regarding its slow decomposition rate after being discarded as trash due to its composition of large molecules. (wikipedia.org)
  • concentrations
  • The fundamentals of growth-linked biodegradation occurring at low substrate concentrations are poorly understood. (asm.org)
  • The occurrence of AOC effectively makes biodegradation assays conducted at low substrate concentrations mixed-substrate assays, which can have profound effects on observed substrate utilization kinetics and microbial growth yields. (asm.org)
  • In this work, we introduce a novel methodology for investigating biodegradation at low concentrations by restricting AOC in our experiments. (asm.org)
  • the fundamentals of growth-linked biodegradation occurring at these low concentrations remain poorly understood. (asm.org)
  • study
  • An ongoing study of biodegradation rates of polymers has led to the development of a new ASTM International standard, D7473, Test Method for Weight Attrition of Plastic Materials in the Marine Environment by Open System Aquarium Incubations. (environmental-expert.com)
  • In this study, we compared the biodegradation performance of test guideline (TG) 301C, which is applied in Japan's Chemical Substances Control Law, with the performance of the other six RBTs listed in the guidelines. (environmental-expert.com)
  • performance
  • These findings indicate that increased concentration of Cypermethrin has a marked effect on biodegradation performance of IES-Ps-1 with a modest increased in the duration of lag phase, but did not lead to complete inhibition or cell death. (environmental-expert.com)
  • hazardous
  • The Client The US Environmental Protection Agency (EPA) The Rundown Demonstrated in-depth knowledge of federal and state permitting and compliance procedures related to all aspects of hazardous waste management and. (environmental-expert.com)
  • Waste stream regulatory and policy analysisNationwideThe Summary Our years of environmental regulatory knowledge and solid waste management expertise provide an understanding of state vs. federal requirement in the handling and disposal of medical and other hazardous waste. (environmental-expert.com)