BESC 402 Study Guide - Midterm Guide: Dense Non-Aqueous Phase Liquid, Polybrominated Diphenyl Ethers, Synthetic Musk
20 Feb 2019
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Document Summary
39-50% of the land has been modified due to human activities, atmospheric co2 concentration has increased a lot. We"ve already used up 50% of the fresh-water that the earth has to offer. The problem of hazardous waste contamination is of very high magnitude. Some of the principal sources of groundwater contamination in the us are leaking usts, leaking waste landfills, hazardous waste management sites, unlined water bodies, household septic systems, pesticide application areas, abandoned petroleum wells, and surface spills. Bioremediation : a managed or spontaneous process in which biological catalysis acts on pollutants, thereby remedying or eliminating environmental contamination present in water, wastewater, sludge, soil, aquifer material, or gas streams. High priority pollutants: trichloroethylene, lead, tetrachloroethylene, benzene, toluene, etc. Most groundwater pollutants are aromatic hydrocarbons, chlorinated solvents, and pesticides. Common sources of contamination : leaking usts, pipelines, oil exploration activities, holding pits near production oil wells and refinery wastes.
