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排序方式: 共有88条查询结果,搜索用时 375 毫秒
1.
Patil MP Subramani T Patil SA Chakrabarti T 《Environmental monitoring and assessment》2002,76(3):299-309
A comprehensive environmental assessment (EA) is a pre-requisite before the site for developing a hazardous waste treatment and disposal facility (HWTDF) is selected. However, the resource limitations, especially for developing countries, often dictatethat the detailed EA be restricted to those sites, which are constraint free and have low hazard potentials. Thus, a preliminary screening exercise for assessing the suitability ofsite for developing the HWTDF needs to be carried out to avoid huge costs involved in detailed EA. While screening a HWTDF site,various factors such as present land use, ecologically sensitiveareas, geology and hydrogeology of the area, the quality and quantity of wastes, engineered safeguards, and the operationalprocedures that need to be adopted, are required to be addressed. In this paper, a multi-level screening criteria employing RemoteSensing, Constraint Mapping, Groundwater Pollution Potential Index (DRASTIC Index), and the Site Ranking was used to assess the suitability of a proposed site for the development of HWTDF.The study helped to identify various constraints at the proposedsite and their significance on the development of the HWTDF. 相似文献
2.
In most natural ecosystems heterotrophic microorganisms encountercomplex mixtures of carbon sources, each of which is present at aconcentration of few micrograms per litre. This study examined the biotreatability and kinetics of an upflow anaerobic sludge blanket (UASB) reactor to complex mixtures of chlorophenols encountered in environmental conditions using on-line and off-line experimental studies. Results indicate that (1) steady-state concentration was quite lower (98.3 mg L-1) with complex mixture of chlorophenols than steady-state concentration achieved when only 2.4 dichlorophenol (124 mg L-1) was studied alone on the same reactor; (2) that toxiceffects of chlorophenols increase with increasing concentrationsof toxicant. (Onset of the inhibitory effect occurred at a lowerconcentration in multi-substrate than in single substrate utilization); (3) addition of alternative utilizable substrate can mitigate toxic effects and enhance degradation; (4) the relative concentration of substrate was critical in determiningutilization patterns. HPLC analysis of off-line experimental samples resulted in a steady-state treatment efficiency of68% for COD, 36% for 2-hlorophenol, 40.5% for 4-chlorophenol, 70.7% for 2,4-dichlorophenol, 53.2% for 2,4,6-trichlorophenol and 42% for pentachlorophenol in presence of glucose. Kinetic constant in terms of V
max and K
s were determined. K
s for the five chlorophenols ranged between 0.016 and 0.117 kg m-3 day-1 while V
max ranged between 0.056 and 0.244 kg m-3 day-1. 相似文献
3.
Grover Madhuri Behl Tapan Bungau Simona Aleya Lotfi 《Environmental science and pollution research international》2021,28(13):15597-15606
Environmental Science and Pollution Research - Vetiver has a broad history of traditional medicinal uses, but only a handful of research article has reported its utility in treating diseases. But... 相似文献
4.
Kaur Ishnoor Behl Tapan Sehgal Aayush Singh Sukhbir Sharma Neelam Aleya Lotfi Bungau Simona 《Environmental science and pollution research international》2021,28(28):37060-37081
Environmental Science and Pollution Research - Mitochondria are unique cell organelles, which exhibit multifactorial roles in numerous cell physiological processes, significantly... 相似文献
5.
Sharma Neelam Zahoor Ishrat Sachdeva Monika Subramaniyan Vetriselvan Fuloria Shivkanya Fuloria Neeraj Kumar Naved Tanveer Bhatia Saurabh Al-Harrasi Ahmed Aleya Lotfi Bungau Simona Behl Tapan Singh Sukhbir 《Environmental science and pollution research international》2021,28(43):60459-60476
Environmental Science and Pollution Research - Meningitis is an inflammation of the protective membranes called meninges and fluid adjacent the brain and spinal cord. The inflammatory progression... 相似文献
6.
Arora Arpita Behl Tapan Sehgal Aayush Singh Sukhbir Sharma Neelam Mathew Bijo Bungau Simona 《Environmental science and pollution research international》2021,28(31):41517-41532
Environmental Science and Pollution Research - The mitochondria, apart from being known as the cell’s “powerhouse,” are crucial in the viability of nerve cells. Any damage to... 相似文献
7.
Behl Tapan Sehgal Aayush Grover Madhuri Singh Sukhbir Sharma Neelam Bhatia Saurabh Al-Harrasi Ahmed Aleya Lotfi Bungau Simona 《Environmental science and pollution research international》2021,28(31):41533-41551
Environmental Science and Pollution Research - The metabolic disorders are the edge points for the initiation of various diseases. These disorders comprised of several diseases including diabetes,... 相似文献
8.
Gupta Amit Behl Tapan Aleya Lotfi Rahman Md. Habibur Yadav Harlokesh Narayan Pal Giridhari Kaur Ishnoor Arora Sandeep 《Environmental science and pollution research international》2021,28(16):19601-19614
Environmental Science and Pollution Research - Type 2 diabetes (T2D) is one of the most widely spread metabolic disorder also called as “life style” disease. Due to the alarming number... 相似文献
9.
Kumar S Bhattacharyya JK Vaidya AN Chakrabarti T Devotta S Akolkar AB 《Waste management (New York, N.Y.)》2009,29(2):883-895
Solid waste management is one of the most challenging issues in urban cities, which are facing a serious pollution problem due to the generation of huge quantities of solid waste. This paper presents an assessment of the existing situation of municipal solid waste management (MSWM) in major cities in India. The quantity and composition of MSW vary from place to place, and bear a rather consistent correlation with the average standard of living. Extensive field investigations were carried out for quantification, analysis of physical composition, and characterization of MSW in each of the identified cities. The MSW management status (per the MSW Rules, 2000) has also been assessed, and an action plan for better management has been formulated; both are presented in this paper. Studies carried out in 59 selected cities in India have revealed that there are many shortcomings in the existing practices used in managing the MSW. These shortcomings pertain mainly to inadequate manpower, financial resources, implements, and machinery required for effectively carrying out various activities for MSWM. To overcome the deficiencies in the existing MSWM systems, an indicative action plan has been presented incorporating strategies and guidelines. Based on this plan, municipal agencies can prepare specific action plans for their respective cities. 相似文献
10.
Pesticide residue level in tea ecosystems of Hill and Dooars regions of West Bengal, India 总被引:1,自引:0,他引:1
Bishnu A Chakrabarti K Chakraborty A Saha T 《Environmental monitoring and assessment》2009,149(1-4):457-464
In the present study we quantified the residues of organophosphorus (e.g. ethion and chlorpyrifos), organochlorine (e.g. heptachlor, dicofol, alpha-endosulfan, beta-endosulfan, endosulfan sulfate) and synthetic pyrethroid (e.g. cypermethrin and deltamethrin) pesticides in made tea, fresh tea leaves, soils and water bodies from selected tea gardens in the Dooars and Hill regions of West Bengal, India during April and November, 2006. The organophosphorus (OP) pesticide residues were detected in 100% substrate samples of made tea, fresh tea leaves and soil in the Dooars region. In the Hill region, 20% to 40% of the substrate samples contained residues of organophosphorus (OP) pesticides. The organochlorine (OC) pesticide residues were detected in 33% to 100% of the substrate samples, excluding the water bodies in the Dooars region and 0% to 40% in the Hill region. The estimated mean totals of studied pesticides were higher in fresh tea leaves than in made tea and soils. The synthetic pyrethroid (SP) pesticide residues could not be detected in the soils of both the regions and in the water bodies of the Dooars. Sixteen percent and 20% of the made tea samples exceeded the MRL level of chlorpyrifos in Dooars and Hill regions respectively. The residues of heptachlor exceeded the MRL in 33% (April) and 100% (November) in the Dooars and 40% (April) and 20% (November) in the Hill region. Based on the study it was revealed that the residues of banned items like heptachlor and chlorpyrifos in made tea may pose health hazards to the consumers. 相似文献