persistent organic pollutants remediation Articles

  • Regionally Based Assessment of Persistent Toxic Substances

    Untitled Document EXECUTIVE SUMMARY In 1997 the United Nations Environment Programme (UNEP) Governing Council decided that immediate international action ...


  • Aerobics to the Rescue - Using Compatible Technologies to Improve Groundwater Remediation

    Background Increased opportunities for contaminated property redevelopment have propelled property owners to evaluate options for accelerating site remediation. In some cases a containment technology may have been implemented to mitigate the off-property migration of contamination as the most ...


    By CL Solutions, LLC

  • Comparing wastewater chemicals, indicator bacteria concentrations, and bacterial pathogen genes as fecal pollution indicators

    The objective of this study was to compare fecal indicator bacteria (FIB) (fecal coliforms, Escherichia coli [EC], and enterococci [ENT]) concentrations with a wide array of typical organic wastewater chemicals and selected bacterial genes as indicators of fecal pollution in water samples collected at or near 18 surface water drinking water intakes. Genes tested included esp (indicating ...

  • Bioremediation of PCB & Pesticide Contaminated Soils Utilizing Gene Expression Factors

     Abstract Historically soils contaminated by persistent organic compounds such as pesticides and PCBs were not considered good candidates for bioremediation due to the simple fact that the chemical industry designed these compounds to withstand the destructive effects of natural attenuation through weathering and microbial activity. Although the chemical industry has long appreciated the ...


  • Surfactants enhanced recovery of endosulfan from contaminated soils

    Soil pollution due to hydrophobic organic compounds is a wide environmental problem. Extensive use of endosulfan in cotton and paddy to meet the needs of the growing population has led to contamination of soil and other ecosystems. Endosulfan is hydrophobic, highly toxic to aquatic and human population and persists in soil for more than a year. To overcome the problem of hydrophobicity and ...

  • Zerovalent Iron nanoparticles for treatment of ground water contaminated by Hexachlorocyclohexanes

    Ground water and aquifer samples from a site contaminated by hexachlorocyclohexanes (HCHs; C6H6Cl6) were exposed to nanoscale iron particles to evaluate the technology as a potential remediation method. The summed concentration of the HCH isomers in ground water was approximately 5.16 µmol L–1 (1500 µg L–1). Batch experiments with 2.2 to 27.0 g L–1 iron nanoparticles showed that more than 95% of ...

  • Sorption and desorption studies of metallic zinc on an alluvial soil

    Background concentrations of heavy metals in soils, which depend on the local geology, may be supplemented to different degrees by anthropogenic inputs. Many industrial processes and operations generate stack emissions, solid wastes and sludges that contain heavy metals, which enter atmosphere and also find their way into aquatic and terrestrial ecosystems. Being non-biodegradable,  heavy ...


    By University of Tehran

  • Surface Decontamination of Crude Oil by DeconGel 1101 and 1102

    ABSTRACT Surface decontamination efficacy determination of DeconGelTM 1101 and 1102 on aluminum, stainless steel, and concrete surfaces contaminated with Crude Oil (polyaromatic hydrocarbons fraction) was performed with LC/MS (Liquid Chromatography/Mass Spectrometry) according to Environmental Protection Agency (EPA) SW-846 Methods: 3500C (sampling), 8321B (analysis), and 1654A (Analysis of ...


    By METIS Scientific

  • A Tale of Two Sites - Enhanced Bioremediation of Explosives Impacted Soils

    The problem with OE compounds in soil A variety of organic explosive (OE) compounds have been used for military, geological and industrial applications throughout North America, and in most industrialized nations. During their manufacture, formulation and storage, these compounds have migrated to the soil. Compounds such as 2,4,6-trinitrotoluene (TNT), hexahydro-1,3,5-trinitro-1,3,5-triazine ...


  • The Bioremediation Process

    Bioremediation allows natural processes to clean up harmful chemicals in the environment. Microscopic 'bugs' or microbes that live in soil and groundwater like to eat certain harmful chemicals, such as those found in gasoline and oil spills. When microbes completely digest these chemicals, they change them into water and harmless gases such as carbon dioxide. In order for microbes to clean up ...


  • Advanced WESP designs assure superior gas cleaning performance

    Nowadays, many industries are facing formidable environmental challenges and there is a growing need for effective, economical gas cleaning and air pollution control equipment. Michael Beltran of Beltran Technologies, Inc. reports on a renewed interest in high-efficiency wet electrostatic precipitators (WESPs) and discusses their importance for controlling sulphuric acid mists and other ...


    By Beltran Technologies, Inc.

  • We need a global treaty on plastics. Here’s what it should look like.

    Plastic pollution is more than an ocean problem, and it’s time we treat it as such. Plastics have boosted our economy because they are versatile, cheap and durable. Yet, thanks to these same traits, in the course of establishing a US$750 billion global industry, we have ...


    By Ensia

  • Principles of Waste Avoidance and Utilization

    The minimization of wastes requiring disposal is increasingly important as available disposal options become more and more constrained, and particularly as more substances enter everyday use which are not readily decomposed in the natural environment and which can present long term hazards. This note sets out some basic principles for waste minimization in industrial processes, where ...


    By The World Bank

  • Sick-building syndrome and building-related illness

    Significant health problems linked to very poor indoor air qualityIndoor Air Quality (IAQ) deals with the content of interior air that could affect health and comfort of building occupants. The IAQ may be compromised by microbial contaminants (mold, bacteria), chemicals (such as carbon monoxide, radon), allergens, or any mass or energy stressor are more prevalent than anyone could have predicted. ...

  • Fitting Into the Neighborhood: Operating by Progressive Odor Management Plan

     Operating by Progressive Odor Management Plan Why would anyone build an $11 million composting facility designed to process an average of 130 tons/day of feedstocks less than one mile from luxury homes, a new high school, a golf course, fast food restaurants, a grocery store, and in an area with a vivid memory of a compost site that impacted the neighborhood and shut down due to odor ...


    By BioCycle Magazine

  • Management of Hazardous Wastes

    ' Management of hazardous waste is a growing concern in many countries. The long-term impacts and costs of improper disposal can be very high and the emphasis must be on prevention. A comprehensive management system should include (i) policies, institutions and effective regulations and (ii) adequate and acceptable disposal facilities (either public or private). This note outlines the key ...


    By The World Bank

  • Environmental Justice: A Brief Historical Analysis

    Untitled Document ...


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