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PCB warning label on a power transformer known to contain PCBs. Polychlorinated biphenyls (PCBs) are organochlorine compounds with the formula C 12 H 10−x Cl x; they were once widely used in the manufacture of carbonless copy paper, as heat transfer fluids, and as dielectric and coolant fluids for electrical equipment. [2]
Generally speaking, there are four steps in this process: [3] In order for PCBs to enter the cell, they firstly need to be solubilized. PCBs are dechlorinated by anaerobic bacteria, then transport the metabolites to aerobic bacteria or fungi through a biofilm. The presence of PCBs metabolites triggers the expression of enzymes in BP pathway.
Polychlorinated biphenyls (PCB) constitute a wide array of now-banned organic chemicals with a variety of industrial applications. At the Kalamazoo River site, most PCBs are a result of the recycling of carbonless copy paper during the 1970s, the waste products from which were dumped into the river.
In 2011 in South Carolina, SCDHEC enacted emergency sludge regulations after PCBs were found to have been discharged to a waste treatment plant. [101] PCBs are also known to flush from industry and land (aka sludge fields) to contaminate fish, [102] as they have up and down the Catawba River in North and South Carolina. State authorities have ...
n.o.s. = not otherwise specified meaning a collective entry to which substances, mixtures, solutions or articles may be assigned if a) they are not mentioned by name in 3.2 Dangerous Goods List AND b) they exhibit chemical, physical and/or dangerous properties corresponding to the Class, classification code, packing group and the name and description of the n.o.s. entry [4]
RoHS and other efforts to reduce hazardous materials in electronics are motivated in part to address the global issue of consumer electronics waste. As newer technology arrives at an ever-increasing rate, consumers are discarding their obsolete products sooner than ever. This waste ends up in landfills and in countries like China to be "recycled".
By Deborah Mary Sophia (Reuters) -Amazon.com is responsible for the sale of hazardous third-party products on its platform, a U.S. government agency said, ordering the e-commerce giant to propose ...
Warren County PCB Landfill was a PCB landfill located in Warren County, North Carolina, near the community of Afton south of Warrenton. The landfill was created in 1982 by the State of North Carolina as a place to dump contaminated soil as result of an illegal PCB dumping incident.