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Analysis of polycyclic aromatic hydrocarbons (PAHs) and their adsorption characteristics on activated sludge during biological treatment of coking wastewater
Meng, Xiaojun1; Li, Haibo2; Zhang, Yuxiu1; Cao, Hongbin2; Sheng, Yuxing2
2016-10-01
Source PublicationDESALINATION AND WATER TREATMENT
ISSN1944-3994
Volume57Issue:50Pages:23633-23643
Abstract

Experiments were conducted to investigate the concentrations of PAHs and their adsorption characteristics by activated sludge in this study. Influence of sorption time, sludge concentration, and pH on PAHs adsorption was evaluated. Furthermore, the isotherms, kinetics of adsorption, and potential risk were also explored. Experimental results show that concentrations of 16 PAHs in coking wastewater sludge were 581.600-2201.633g/g, both Linear and Freundlich adsorption models were able to adequately describe the adsorption equilibriums of PAHs onto activated sludge. The adsorption process closely followed the pseudo-second-order kinetic model. The adsorption efficiencies of PAHs depended on the activated sludge concentration and sorption time, while that was not affected by pH. Hydrophobic interaction, distribution, and chemisorption were mainly responsible for the adsorption of PAHs, while the surface area and pore volume of activated sludge had little contribution. Results also indicate that the order of carcinogenic health risk was Benzo[a]pyrene>Dibenzo[a,h]anthracene>Benzo[b]fluoranthene>Indeno[1,2,3-cd]pyrene>Benzo[a]anthracene>Benzo[k]fluoranthene.

KeywordCoking Wastewater Pahs Biological Sludge Adsorption Mechanism Influencing Factors Potential Risk
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1080/19443994.2015.1137233
Indexed BySCI
Language英语
WOS KeywordTREATMENT-PLANT ; SORPTION ; ULTRAFILTRATION ; KINETICS ; REMOVAL ; BIODEGRADATION ; BIOSORPTION ; EMISSIONS ; MEMBRANES ; CARBON
WOS Research AreaEngineering ; Water Resources
WOS SubjectEngineering, Chemical ; Water Resources
Funding OrganizationNational Environmental Public Welfare Project of China(201509053) ; National Natural Science Foundation of China(31370281) ; Fundamental Research Funds for the Central Universities of China University of Mining and Technology (Beijing)(2010YH05)
WOS IDWOS:000384675100016
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21479
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.China Univ Min & Technol, Sch Chem & Environm Engn, Dept Environm & Biol Engn, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Meng, Xiaojun,Li, Haibo,Zhang, Yuxiu,et al. Analysis of polycyclic aromatic hydrocarbons (PAHs) and their adsorption characteristics on activated sludge during biological treatment of coking wastewater[J]. DESALINATION AND WATER TREATMENT,2016,57(50):23633-23643.
APA Meng, Xiaojun,Li, Haibo,Zhang, Yuxiu,Cao, Hongbin,&Sheng, Yuxing.(2016).Analysis of polycyclic aromatic hydrocarbons (PAHs) and their adsorption characteristics on activated sludge during biological treatment of coking wastewater.DESALINATION AND WATER TREATMENT,57(50),23633-23643.
MLA Meng, Xiaojun,et al."Analysis of polycyclic aromatic hydrocarbons (PAHs) and their adsorption characteristics on activated sludge during biological treatment of coking wastewater".DESALINATION AND WATER TREATMENT 57.50(2016):23633-23643.
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