排序方式: 共有37条查询结果,搜索用时 140 毫秒
31.
Carlos A. Guzman-Perez Jafar Soltan Jared Robertson 《Journal of environmental science and health. Part. B》2013,48(6):544-552
Using a laboratory-scale mixed reactor, the performance of alumina in degrading 2,4-Dichlorophenoxyacetic acid with ozone in the presence of tert-butyl alcohol radical scavenger was studied. The operating variables investigated were the dose of alumina catalyst and solution pH. Results showed that using ozone and alumina leads to a significant increase in 2,4-D removal in comparison to non-catalytic ozonation and adsorption processes. The observed reaction rate constants (kobs ) for 2,4-D during ozonation were found to increase linearly with increasing catalyst dose. At pH 5, the kobs value increased from 19.3 to 26 M?1 s?1 and 67 M?1 s?1 when varying the alumina dose from 1 to 2 and 4 g L?1, respectively. As pH was increased, higher reaction rates were observed for both non-catalytic ozonation and catalytic ozonation processes. Thus, at pH 3 and using a catalyst dose of 8 g L?1, the kobs values for non-catalytic ozonation and catalytic ozonation processes were 3.4 and 58.9 M?1 s?1, respectively, whereas at pH 5 reaction rate constants of 6.5 and 128.5 M?1 s?1 were observed, respectively. Analysis of total organic carbon suggested that catalytic ozonation with alumina achieved a considerable level of mineralization of 2,4-D. Adsorption of 2,4-D on alumina was found to play an important role in the catalytic ozonation process. 相似文献
32.
Kifayatullah Khan Yonglong Lu Mian Abdal Saee Hazrat Bilal Hassan Sher Hizbullah Khan Jafar Ali Pei Wang Herman Uwizeyiman Yvette Baninl Qifeng Li Zhaoyang Liu Javed Nawa Yunqiao Zhou Chao Su Ruoyu Liang 《环境科学学报(英文版)》2018,30(10):1-12
Fecal bacteria contaminate water resources and result in associated waterborne diseases.This study assessed drinking water quality and evaluated their potential health risks in Swat, Pakistan. Ground and surface drinking water were randomly collected from upstream to downstream in the River Swat watershed and analyzed for fecal contamination using fecal indicator bacteria(Escherichia coli) and physiochemical parameters(potential of hydrogen, turbidity, temperature, electrical conductivity, total dissolved solid, color, odor and taste). The physiochemical parameters were within their safe limits except in a few locations, whereas, the fecal contaminations in drinking water resources exceeded the drinking water quality standards of Pakistan Environmental Protection Agency(Pak-EPA),2008 and World Health Organization(WHO), 2011. Multivariate and univariate analyses revealed that downstream urbanization trend, minimum distance between water sources and pit latrines/sewerage systems, raw sewage deep well injection and amplified urban,pastures and agricultural runoffs having human and animal excreta were the possible sources of contamination. The questionnaire survey revealed that majority of the local people using 10–20 years old drinking water supply schemes at the rate of 73% well supply,13% hand pump supply, 11% spring supply and 3% river/streams supply, which spreads high prevalence of water borne diseases including hepatitis, intestinal infections and diarrhea, dysentery, cholera, typhoid fever, jaundice and skin diseases in children followed by older and younger adults. 相似文献
33.
Shabahang Zahra Nouri Leila Nafchi Abdorreza Mohammadi 《Journal of Polymers and the Environment》2022,30(9):3985-3998
Journal of Polymers and the Environment - The aim of this work was to preparation of edible films based on whey protein isolate/pectin (WPIP) that containing betanin pigments (BP) and copper (I)... 相似文献
34.
Seyedabadi Mohammad Reza Karrabi Mohsen Nabati Jafar 《Environmental science and pollution research international》2022,29(10):14121-14130
Environmental Science and Pollution Research - In recent years, green roofs have become the subject of increasing interest because of their good aesthetic qualities, energy conservation, and... 相似文献
35.
Crini Grégorio Cosentino Cesare Bradu Corina Fourmentin Marc Torri Giangiacomo Ruzimuradov Olim Alaton Idil Arslan Tomei Maria Concetta Derco Ján Barhoumi Mondher Prosen Helena Malinović Borislav N. Vrabeľ Martin Huq Mohammad Mahmudul Soltan Jafar Lichtfouse Eric Morin-Crini Nadia 《Environmental Chemistry Letters》2022,20(4):2597-2628
Environmental Chemistry Letters - Alkylphenols and alkylphenol polyethoxylates are emerging hazardous contaminants due in particular to their endocrine-disrupting properties. These compounds... 相似文献
36.
Zobeidi Tahereh Yaghoubi Jafar Yazdanpanah Masoud 《Environment, Development and Sustainability》2022,24(4):5400-5425
Environment, Development and Sustainability - Water scarcity poses a global threat to smallholder farmers and crops. Along with population growth, agricultural development, increased urbanization,... 相似文献
37.
Morin-Crini Nadia Lichtfouse Eric Fourmentin Marc Ribeiro Ana Rita Lado Noutsopoulos Constantinos Mapelli Francesca Fenyvesi Éva Vieira Melissa Gurgel Adeodato Picos-Corrales Lorenzo A. Moreno-Piraján Juan Carlos Giraldo Liliana Sohajda Tamás Huq Mohammad Mahmudul Soltan Jafar Torri Giangiacomo Magureanu Monica Bradu Corina Crini Grégorio 《Environmental Chemistry Letters》2022,20(2):1333-1375
Environmental Chemistry Letters - The rise of emerging contaminants in waters challenges the scientific community and water treatment stakeholders to design remediation techniques that are simple,... 相似文献