Xem 1-20 trên 75 kết quả Bioremediation
  •  Bài thuyết trình: Use of enzymes in bioremediation trình bày các loại ô nhiễm môi trường, phục hồi sinh học, các phương pháp phục hồi sinh học,... Tham khảo nội dung tài liệu để nắm bắt nội dung chi tiết.

    pdf22p thuyancn 25-06-2015 68 13   Download

  • This book provides an authoritative state-of-the-art biotreatment review for three key contaminant groups: chlorinated solvents, polychlorinated biphenyls (PCBs), and polycyclic aromatic hydrocarbons (PAHs). Issues such as availability, toxicity, and treatability are discussed along with a summary of the latest bioremediation technologies. Special innovative research and development projects are presented for each contaminant group.

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  • Bioremediation, the use of microorganisms, by virtue of their bioconcentrating and metabolic properties, to degrade, sequester, or remove environmental contaminants, has about a 45-year history. Such uses of microorganisms for this purpose now involve freshwater, marine, and terrestrial environments. Bioremediation is a multidisciplinary area of knowledge and expertise that involves basic and applied science. Microbiologists, chemists, toxicologists, environmental engineers, molecular biologists, and ecologists have made major contributions to this subject....

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  • Vegetable oil and grease polluted wastewater caused many problems in wastewater plan such as physical blockages in sewer, pump, screens and filter distributor arms. Its occurrence in effluent increase COD significantly even its amount is not high. In this paper, bioremediation was investigated to remove vegetable oil and grease. Four strains were positive with lipid degrading test. Cell morphology and optimal conditions such as pH, temperature anf lipid concentration was found.

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  • Bioremediation presents a potentially low cost and environmentally agreeable alternative to current physico-chemical remediation strategies. However, heavy metals such as mercury cannot be converted into non-toxic forms by naturally occurring bacteria. Annual global emissions estimates for mercury released into the environment are in the thousands of tons per year [1,2] while the remediation cost is in the thousands of dollars per pound. Finding new bioremediation technologies is an urgent need.

    pdf8p zingzing09 24-04-2013 37 1   Download

  • Petroleum-based products are the major source of energy for industry and daily life. Leaks and accidental spills occur regularly during the exploration, production, refining, transport, and storage of petroleum and petroleum products. Crude oil-impacted tropical soil and natural water samples (0 - 30cm depth) were obtained from the Niger Delta, Nigeria. A total of twenty seven bacterial species of relevance in bioremediation were isolated and characterized using standard and conventional methods. The predominant species belong to the genera Pseudomonas and Proteus.

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  • Bioremediation, which employs the biosorption and or biodegradation potentials of organisms or their attributes, is an effective technology that can be used to accomplish both effective detoxification and volume reduction. Research was carried out to further provide experimental evidences that support the use of biological method which is a better, less expensive and safer means of biosorbing hydrocarbon contaminants.

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  • In the present investigation, bacterial species such as E. coli, S. aureus and S. bongori were isolated from soil by using serial dilution. Bioremediation results showed the S. aureus was highly efficient on Diazinon removal by 62%, 63.2% and 68.6%, Pirimicarb removal was 44%, 52.4% and 53.8%, and Atrazine removal was 61%, 65.6% and 70.6%. and the efficiency of E. coli removal on Diazinon was 59%, 60.8% and 63.8%; on Pirimicarb was 44%, 52.4% and 53.8%; and for Atrazine 57%, 60.8% and 64.4%. S. bongori efficiency on Diazinon was 49%, 51.2% and 55.8%; on Pirimicarb removal was 61%, 63.

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  • Chlorpyrifos (O,O-diethyl O-3, 5, 6-trichloro-2-pyridyl phosphorothioate) is a widely used broad-spectrum organophosphate pesticide. Widespread and indiscriminate use of Chlorpyrifos has led to severe environmental problems. Bioremediation would be the only eco-friendly solution for Chlorpyrifos persistence in the environment. Many bacteria are capable of degrading Chlorpyrifos in liquid media. Thus, the current study attempted to isolate Chlorpyrifos degrading bacteria from pesticide applied soil.

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  • Petrochemical Industry manufacturing petrochemical product-generate waste containing organic compounds. As the toxicity level of most of these compounds is high, there is an increasing demand for remediation of such sites that involves removal of the offending compounds. Bioremediation uses living systems or biological products to biodegrade waste, with the objective being reduction of waste to chemical forms that can be assimilated into natural cycles. In the present study, the use of micro-organism for bioremediation has been carried out.

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  • Plant protection using synthetic pesticides has become one of the essential components of modern agriculture. Although need based judicious application of pesticides have made a significant impact on increasing crop productivity in agricultural sector by combating heavy losses due to pest infestation but there are lots of serious associated bottlenecks with pesticides. The major issues related to pesticide application are environmental pollution, health hazards, pest resurgence, secondary pest outbreak etc.

    pdf11p angicungduoc6 22-07-2020 1 0   Download

  • Worldwide, crude oil demand is unceasingly increasing. As a response, Enhanced Oil Recovery (EOR) processes have re‐gained interest from the research and development phases to the oilfield EOR implementation stage. This renewed interest has been also furthered by the current high oil price environment, the maturation of oilfields worldwide, and few new‐well discoveries. Concurrently, environmental concerns and public pressure related to crude oil pollution control and remediation of oilcontaminated sites are becoming greater than ever....

    pdf330p wqwqwqwqwq 09-07-2012 100 21   Download

  • Tham khảo tài liệu 'manual for soil analysis-monitoring and assessing soil bioremediant phần 1', khoa học tự nhiên, hoá học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Tham khảo tài liệu 'manual for soil analysis-monitoring and assessing soil bioremediation phần 4', khoa học tự nhiên, hoá học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf37p longdencachep 19-09-2011 46 7   Download

  • Tham khảo tài liệu 'manual for soil analysis-monitoring and assessing soil bioremediation phần 2', khoa học tự nhiên, hoá học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf37p longdencachep 19-09-2011 39 4   Download

  • Tham khảo tài liệu 'manual for soil analysis-monitoring and assessing soil bioremediation phần 3', khoa học tự nhiên, hoá học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf37p longdencachep 19-09-2011 49 4   Download

  • The mixed bacteria collected from the water phase in crude oil deposit shows the decomposition of dioxin by adding the soil, mixing and settling. High concentration 50 ppm of dioxin in soil could decompose without nutritional salts at the rate of 60% after 6 weeks.

    pdf8p dannisa 14-12-2018 14 2   Download

  • Indigenous Bacillus pumilus, B. licheniformis, and B. subtilis were isolated from marine water and soil samples and investigated for potential bioremediation ability in Penaeus monodon culture. Bacillus spp.

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  • Industrial wastewaters from pig slaughtering plants (PSPs) generated in the slaughtering process could have an environmental impact, if discharged to a receiving water body without any treatment. In this study, a Chilean Thraustochytrid (TH) strain, a class of marine protist, was used for the bioremediation of piggery slaughterhouse wastewater (SWW). According to the physicochemical analysis of the residue, it was characterized by an initial chemical oxygen demand (COD) of 9610 mg L 1 , 18,625 mg L 1 of oil and grease, 1639 mg L 1 of total nitrogen, 149 mg L 1 of total phosphorus, and 82.

    pdf6p trinhthamhodang1 14-11-2019 4 0   Download

  • Bacteria able to produce biosurfactants can use petroleum-based hydrocarbons as a carbon source. Herein, four biosurfactant-producing Pseudomonas aeruginosa strains, isolated from oil-contaminated saline soil, were combined to form a bacterial consortium. The inoculation of the consortium to contaminated soil alleviated the adverse effects of salinity on biodegradation and increased the rate of degradation of petroleum hydrocarbon approximately 30% compared to the rate achieved in non-treated soil.

    pdf7p trinhthamhodang1 14-11-2019 4 0   Download




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