The use of hybrid advanced oxidation processes(AOPs) for the removal of pollutants from industrial effluents has been extensively studied in recent literature. The aim of this study is to compare the performance of th...The use of hybrid advanced oxidation processes(AOPs) for the removal of pollutants from industrial effluents has been extensively studied in recent literature. The aim of this study is to compare the performance of the photo,Fenton, photo-Fenton and ozone–photo–Fenton processes in terms of color removal and chemical oxygen demand(COD) removal of distillery industrial effluent together with the associated electrical energy per order. It was observed from the experimental results that the O_3/UV/Fe^(2 +)/H_2O_2 process yielded a 100% color and95.50% COD removals with electrical energy per order of 0.015 k W·h·m^(-3) compared to all other combinations of the AOPs. The effects of various operating parameters such as H_2O_2 and Fe^(2+) concentration, effluent pH, COD concentration and UV power on the removal of color, COD and electrical energy per order for the ozone–photo–Fenton process was critically studied and reported. The color and COD removals were analyzed using a UV/Vis spectrometer and closed reflux method.展开更多
This article presents an application of assessing human health risk in typical city of North China plain.Combined with water quality and multi-element analysis,Pb,Cd,Cr^6＋,Mn,NO3^-,F^-,and As in groundwater samples w...This article presents an application of assessing human health risk in typical city of North China plain.Combined with water quality and multi-element analysis,Pb,Cd,Cr^6＋,Mn,NO3^-,F^-,and As in groundwater samples were chosen to be used for human health risk assessment of drinking water pathway and dermal contact pathway,and results show a good effect.Results indicate that（1） poor water quality is caused by salinity and hardness overstandard;（2） in noncarcinogenic risk,samples that do not pose noncarcinogenic risk only account for 28.46%;in carcinogenic risk,samples that do not pose carcinogenic risk account for 73.08%;（3） the noncarcinogenic risk in the study area decreased in the following order：NO3^-〉Mn〉As〉F-〉Cr^6＋〉Cd〉Pb and the carcinogenic risk of the study area de-creased in the following order：As〉Cd=NO3^-=Mn=F-=Cr^6＋=Cd=Pb=0,because the slop factors were not available for the other pollutants,except for As;and（4） in terms of whole study area,the main contrib-ute order of drinking water pathway and dermal contact pathway in human body is drinking water pathway〉dermal contact pathway.展开更多
基金Supported by the University of Malaya High Impact Research Grant(HIR-MOHED000037-16001)from the Ministry of Higher Education Malaysia
文摘The use of hybrid advanced oxidation processes(AOPs) for the removal of pollutants from industrial effluents has been extensively studied in recent literature. The aim of this study is to compare the performance of the photo,Fenton, photo-Fenton and ozone–photo–Fenton processes in terms of color removal and chemical oxygen demand(COD) removal of distillery industrial effluent together with the associated electrical energy per order. It was observed from the experimental results that the O_3/UV/Fe^(2 +)/H_2O_2 process yielded a 100% color and95.50% COD removals with electrical energy per order of 0.015 k W·h·m^(-3) compared to all other combinations of the AOPs. The effects of various operating parameters such as H_2O_2 and Fe^(2+) concentration, effluent pH, COD concentration and UV power on the removal of color, COD and electrical energy per order for the ozone–photo–Fenton process was critically studied and reported. The color and COD removals were analyzed using a UV/Vis spectrometer and closed reflux method.
基金supported by the National Science and Technology Major Project(Nos.2009ZX05039-003, 2009ZX05039-004,and 2011ZX05060-005)the National Program on Key Basic Research Program(No.2010CB428801-1)the State-Owned Land Resources Investigation(No. 1212010430351)
文摘This article presents an application of assessing human health risk in typical city of North China plain.Combined with water quality and multi-element analysis,Pb,Cd,Cr^6＋,Mn,NO3^-,F^-,and As in groundwater samples were chosen to be used for human health risk assessment of drinking water pathway and dermal contact pathway,and results show a good effect.Results indicate that（1） poor water quality is caused by salinity and hardness overstandard;（2） in noncarcinogenic risk,samples that do not pose noncarcinogenic risk only account for 28.46%;in carcinogenic risk,samples that do not pose carcinogenic risk account for 73.08%;（3） the noncarcinogenic risk in the study area decreased in the following order：NO3^-〉Mn〉As〉F-〉Cr^6＋〉Cd〉Pb and the carcinogenic risk of the study area de-creased in the following order：As〉Cd=NO3^-=Mn=F-=Cr^6＋=Cd=Pb=0,because the slop factors were not available for the other pollutants,except for As;and（4） in terms of whole study area,the main contrib-ute order of drinking water pathway and dermal contact pathway in human body is drinking water pathway〉dermal contact pathway.
