排序方式: 共有66条查询结果,搜索用时 15 毫秒
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Faranak Pishgar Homayon Ahmad Panahi Ali Akbar Khodaparast Haghi Vahid Mottaghitalab Amir Hesam Hasani 《Journal of Polymers and the Environment》2016,24(2):176-184
In this research, a novel thermosensitive nanosphere polymer (TNP) was synthesized by copolymerization of N-isopropylacrylamide with 3-allyloxy-1,2-propanediol for the removal of diazinon from water. The characterization of the synthesized adsorbent has been performed by Fourier transform infrared spectrometer, scanning electron microscopy and elemental analysis. Batch adsorption method was performed to investigate the influences of various parameters like pH, temperature and contact time on the adsorption of diazinon. The equilibrium adsorption data of diazinon by TNP was studied by Langmuir, Freundlich, Temkin and Redlich–Peterson model. According to equilibrium adsorption results, the Langmuir, Freundlich and Temkin constants were evaluated to be 0.912 (L/mg), 7.916 (mg/g) (L/mg)1/n and 2.494 respectively at pH 7 and room temperature. Based on Redlich–Peterson model analysis, the equilibrium data for the adsorption of diazinon was conformed well to the Langmuir isotherm model. This method was successfully applied for removal of diazinon from environmental samples. Moreover, in reusing of TNP, the sorption capacity was maintained without any significant change after 10 cycles of sorption–desorption process. 相似文献
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Ahmadi Zahed Moradabadi Alireza Abdollahdokht Danial Mehrabani Mehrnaz Nematollahi Mohammad Hadi 《Environmental science and pollution research international》2019,26(20):20411-20417
Environmental Science and Pollution Research - Gasoline station attendants spend a great deal of their time in the direct exposure to noxious substances such as benzene and byproducts of gasoline... 相似文献
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Alkindi Khalifa M. Mukherjee Kaustuv Pandey Manish Arora Aman Janizadeh Saeid Pham Quoc Bao Anh Duong Tran Ahmadi Kourosh 《Environmental science and pollution research international》2022,29(14):20421-20436
Environmental Science and Pollution Research - Nitrate is a major pollutant in groundwater whose main source is municipal wastewater and agricultural activities. In the present study, Bayesian... 相似文献
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Naimi Nayera Pilevar Zahra Ranaei Vahid Mahmudiono Trias Fakhri Yadolah Paseban Ali Atamaleki Ali Janghorban Firoozeh Mousavi Khaneghah Amin 《Environmental science and pollution research international》2022,29(36):54013-54024
Environmental Science and Pollution Research - The presence of potentially toxic elements (PTEs) in crops can directly/indirectly affect consumers’ health. The contamination of apple as one... 相似文献
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Vahid Ebadat 《Journal of Loss Prevention in the Process Industries》2010,23(6):907-912
The majority of powders that are used in the processing industries are combustible (also referred to as flammable, explosible). An explosion will occur if the concentration of the combustible dust that is suspended in air is sufficient to propagate flame when ignited by a sufficiently energetic ignition source.A systematic approach to identifying dust cloud explosion safety against their consequences generally involves:-Identification of locations where combustible dust cloud atmospheres could be present-Understanding of the explosion characteristics of the dust(s)-Identification of potential ignition sources that could be present under normal and abnormal conditions-Proper process and facility design to eliminate and/or minimize the occurrence of dust explosions and protect people and facilities against their consequences-Adequate maintenance of facilities to prevent ignition sources and minimize dust releaseThis presentation will discuss the conditions that are required for dust cloud explosions to occur and presents a well-tried approach to identify, assess, and eliminate/control dust explosion hazards in facilities. 相似文献
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Naghmeh Soltani Behnam Keshavarzi Farid Moore Armin Sorooshian Mohamad Reza Ahmadi 《Environmental science and pollution research international》2017,24(23):18798-18816
This study investigated the concentration of potentially toxic elements (PTEs) including Al, As, Cd, Co, Cr, Cu, Fe, Hg, Mn, Mo, Ni, Pb, Sb, V, and Zn in 102 soils (in the Near and Far areas of the mine), 7 tailings, and 60 plant samples (shoots and roots of Artemisia sieberi and Zygophylum species) collected at the Gol-E-Gohar iron ore mine in Iran. The elemental concentrations in tailings and soil samples (in Near and Far areas) varied between 7.4 and 35.8 mg kg?1 for As (with a mean of 25.39 mg kg?1 for tailings), 7.9 and 261.5 mg kg?1 (mean 189.83 mg kg?1 for tailings) for Co, 17.7 and 885.03 mg kg?1 (mean 472.77 mg kg?1 for tailings) for Cu, 12,500 and 400,000 mg kg?1 (mean 120,642.86 mg kg?1 for tailings) for Fe, and 28.1 and 278.1 mg kg?1 (mean 150.29 mg kg?1 for tailings) for Ni. A number of physicochemical parameters and pollution index for soils were determined around the mine. Sequential extractions of tailings and soil samples indicated that Fe, Cr, and Co were the least mobile and that Mn, Zn, Cu, and As were potentially available for plants uptake. Similar to soil, the concentration of Al, As, Co, Cr, Cu, Fe, Mn, Mo, Ni, and Zn in plant samples decreased with the distance from the mining/processing areas. Data on plants showed that metal concentrations in shoots usually exceeded those in roots and varied significantly between the two investigated species (Artemisia sieberi > Zygophylum). All the reported results suggest that the soil and plants near the iron ore mine are contaminated with PTEs and that they can be potentially dispersed in the environment via aerosol transport and deposition. 相似文献
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Hossein Tabari Safar Marofi Mohammad Ahmadi 《Environmental monitoring and assessment》2011,177(1-4):273-287
Sixteen water quality parameters have been monitored at four stations located along the Maroon River during 1989?C2008. The trend analysis was performed on seasonal and annual time-scales using the Mann?CKendall test, the Sen??s slope estimator and the linear regression. The relationships of the water quality parameters to river discharge were also investigated. The statistical methods showed both positive and negative trends in annual water quality data. However, significant trends were detected by the statistical methods only in calcium, magnesium, sodium absorption ratio, pH, and turbidity series. The results indicated that the concentrations of the water quality parameters increased in spring and winter seasons, while the concentrations were diluted in summer and autumn seasons in the last two decades. Moreover, the highest numbers of significant trends were found in the spring and summer series, respectively. According to the regression analysis, most of the water quality parameters were negatively correlated with river discharge. 相似文献
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