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211.
Ebrahimzade Hossein Khayati Gholam Reza Schaffie Mahin 《Journal of Material Cycles and Waste Management》2018,20(4):2117-2129
Journal of Material Cycles and Waste Management - The kinetic study of valuable metals recovery from waste lithium-ion batteries (LIBs) using the artificial neural network (ANN) was investigated. A... 相似文献
212.
Banitalebi Golnoosh Mosaddeghi Mohammad Reza Shariatmadari Hossein 《Journal of Material Cycles and Waste Management》2021,23(3):950-964
Journal of Material Cycles and Waste Management - This study was done to evaluate the suitability of biochar-based mixtures for growth media. Biochars from agricultural wastes were produced by slow... 相似文献
213.
Bakhshoodeh Reza Alavi Nadali Paydary Pooya 《Environmental science and pollution research international》2017,24(30):23803-23814
Environmental Science and Pollution Research - Handling and treatment of composting leachate is difficult and poses major burdens on composting facilities. The main goal of this study was to... 相似文献
214.
215.
Evaluation of heavy metal contamination hazards in nuisance dust particles, in Kurdistan Province, western Iran 总被引:3,自引:0,他引:3
The effects of natural andgeochemical factors depending on heavy metal contamination in nuisance dust particles were evaluated. The nuisance dust particles were sampled using passive deposit gauge method for one year from April2010 to March2011 and the obtained samples were measured for the total contents and the contamination levels of Fe, Mn, Cu and As usinggeo-accumulation index (Igeo ), enrichment factor (EF) and the integrated pollution index (IPI). The results showed that, the contamination levels of Fe and Mn based on Igeo values, were uncontaminated (Igeo < 0) (variations of the Igeo index was from -3.11 to -1.751 for Fe, from -0.630 to -1.925 for Mn), while the values of Cu and As were demonstrated to have moderate contamination based on Igeo values (variations of Igeo index was from -1.125 to 0.848 for Cu, and from -2.002 to 1.249 for As). The analysis of EF also revealed minor to moderate enrichment for Mn (1.215-4.214), minor to moderately severe enrichment for Cu (2.791-6.484), and As (1.370-8.462), respectively. The variation of the IPI index also showed low to moderate level of heavy metal pollution in nuisance dust particulates (0.511-1.829). The analysis of the results also approved that the natural processes andgeochemical variables (the changing meteorological parameters) can significantly affect the availability of heavy metals in nuisance dust particles in Western Iran. 相似文献
216.
Algal phytoremediation represents a practical green solution for treating anaerobically digested piggery effluent(ADPE). The potential and viability of combining microalgae and macroalgae cultivation for the efficient treatment of ADPE were evaluated in this study.Bioprospecting the ability of different locally isolated macroalgae species illustrated the potential of Cladophora sp. to successfully grow and treat ADPE with up to 150 mg/L NH_4~+ with a biomass productivity of(0.13 ± 0.02) g/(L·day) and ammonium removal rate of(10.23 ± 0.18) mg/(L·day) NH_4~+. When grown by itself, the microalgae consortium used in this study consisting of Chlorella sp. and Scenedesmus sp. was found to grow and treat undiluted ADPE(up to 525 mg/L NH_4~+) with an average ammonium removal rate of 25 mg/(L·day) NH_4~+ and biomass productivity of(0.012 ± 0.0001) g/(L·day). Nevertheless, when combined together, despite the different cultivation systems(attached and non-attached) evaluated,microalgae and macroalgae were unable to co-exist together and treat ADPE as their respective growth were inversely related to each other due to direct competition for nutrients and available resources as well as the negative physical interaction between both algal groups. 相似文献
217.
218.
Spatially constrained clustering and upper level set scan hotspot detection in surveillance geoinformatics 总被引:1,自引:0,他引:1
G. P. Patil R. Modarres W. L. Myers P. Patankar 《Environmental and Ecological Statistics》2006,13(4):365-377
We discuss upper level set (ULS) scan as a type of spatially constrained clustering in relation to two ways of imposing the
spatial constraint, retrospectively versus progressively. We show that ULS scan produces the same results both ways; whereas
two popular clustering techniques, single-linkage and K-means, can yield different results when spatial constraints are imposed
retrospectively versus progressively. The ULS scan approach examines spatially connected components of a tessellation as a
threshold is moved from the highest level (value) in the data to the lowest level. When the variable of interest on the tessellation
is a rate of incidence, then a significance test is available based on binomial or Poisson null models and Monte Carlo techniques.
This is a common context for detecting hotspots of diseases in epidemiological work. We also discuss an approach for extending
the univariate methodology to accommodate multivariate contexts.
Received: September 2005 / Revised: February 2006
This material is based upon work supported by (i) the National Science Foundation under Grant No. 0307010, (ii) the United
States Environmental Protection Agency under Grant No. CR-83059301 and (iii) the Pennsylvania Department of Health using Tobacco
Settlement Funds under Grant No. ME 01324. Any opinions, findings, and conclusions or recommendations expressed in this material
are those of the author(s) and do not necessarily reflect the views of the agencies. 相似文献
219.
Anaerobic codigestion of municipal, farm, and industrial organic wastes: a survey of recent literature. 总被引:3,自引:0,他引:3
Felipe Alatriste-Mondragón Parviz Samar Huub H J Cox Birgitte K Ahring Reza Iranpour 《Water environment research》2006,78(6):607-636
Codigestion of organic wastes is a technology that is increasingly being applied for simultaneous treatment of several solid and liquid organic wastes. The main advantages of this technology are improved methane yield because of the supply of additional nutrients from the codigestates and more efficient use of equipment and cost-sharing by processing multiple waste streams in a single facility. Many municipal wastewater treatment plants (WWTPs) in industrialized countries currently process wastewater sludge in large digesters. Codigestion of organic wastes with municipal wastewater sludge can increase digester gas production and provide savings in the overall energy costs of plant operations. Methane recovery also helps to reduce the emission of greenhouse gases to the atmosphere. The goal of this literature survey was to summarize the research conducted in the last four years on anaerobic codigestion to identify applications of codigestion at WWTPs. Because the solids content in municipal wastewater sludge is low, this survey only focuses on codigestion processes operated at relative low solids content (slurry mode). Semi-solid or solid codigestion processes were not included. Municipal wastewater sludge, the organic fraction of municipal solid waste, and cattle manure (CAM) are the main wastes most often used in codigestion processes. Wastes that are codigested with these main wastes are wood wastes, industrial organic wastes, and farm wastes. These are referred to in this survey as codigestates. The literature provides many laboratory studies (batch assays and bench-scale digesters) that assess the digestibility of codigestates and evaluate the performance and monitoring of codigestion, inhibition of digestion by codigestates, the design of the process (e.g., single-stage or two-stage processes), and the operation temperature (e.g., mesophilic or thermophilic). Only a few reports on pilot- and full-scale studies were found. These evaluate general process performance and pretreatment of codigestates, energy production, and treatment costs. 相似文献
220.
Reza Iranpour Huub H J Cox Steve Fan Varouj Abkian Traci Minamide Ray J Kearney Roger T Haug 《Water environment research》2006,78(11):2244-2252
The City of Los Angeles Hyperion Treatment Plant (HTP) (California) converted its anaerobic digesters to thermophilic operation to produce Class A biosolids. Phase IV tests demonstrated compliance of a two-stage, continuous-batch process with Alternative 1 of U.S. Environmental Protection Agency 40 CFR Part 503 (U.S. EPA, 1993), which defines the time-temperature requirement for batch treatment (T > or = 56.3 degrees C at 16-h holding). Fecal coliforms, Salmonella sp., viable helminth ova, and enteric viruses were not detected in biosolids in the postdigestion train, including the truck-loading facility and the farm for land application as the last points of plant control where compliance is to be demonstrated. The same results were achieved during Phase V tests, after lowering the second-stage holding temperature to 52.6 degrees C to reduce the elevated methyl mercaptan production that was observed during Phase IV. Hence, the Phase V process complied with Alternative 3 of 40 CFR Part 503. Currently, HTP operates its digesters under the same conditions as tested in Phase V. In 2003, monthly monitoring of the biosolids at the truck-loading facility and the farm for land application demonstrated consistent compliance with Alternative 3. 相似文献