RCEES OpenIR  > 环境水质学国家重点实验室
Pre-aggregation of Al-13 in optimizing coagulation for removal of humic acid
Yue, Ye; An, Guangyu; Liu, Libing; Lin, Leiming; Jiao, Ruyuan; Wang, Dongsheng
2021-08
Source PublicationCHEMOSPHERE
ISSN0045-6535
Volume277Pages:-
AbstractThe effective removal of humic acid (HA) by coagulation has been extensively investigated for water treatments. However, the limitations of pH variation and excessive residual aluminum issues were still factors needed to be considered. In this study, to investigate the coagulation mechanism for removing HA by Al-13 and optimize Al-13 operation for removing HA, Al-13 and preformed Al-13 aggregates (Al(13)agg) were applied to remove HA at different pH conditions. The results showed that preformed Al(13)agg exhibited superior HA removal performance than Al-13 due to its wide pH range and low residual Al level. During coagulation, Al-13 and Al(13)agg interacted with HA in their original status, but the DSlope(325-375) difference implied that the complexation capacity between HA and Al(13)agg was stronger than Al-13. The new peaks of HPSEC representing larger molecular weight substances were formed under acidic and neutral conditions, which indicated that HA firstly aggregated into larger complexed molecules by interacting with Al-13 or its hydrolysates and was subsequently removed by forming large flocs which was completely different from Al(13)agg situation. Therefore, the different coagulation mechanisms played the roles in HA removal for Al-13 and Al(13)agg which were studied in this paper. It was believed that the complexation and charge neutralization effects dominated coagulation process for Al-13 while sweep flocculation and adsorption coagulation were main driving force for Al(13)agg in HA removing. This work provides significant understanding of HA removal by Al-13 and Al(13)agg coagulation, which can help to design and optimize the high efficiency coagulant based on Al polycations. (C) 2021 Elsevier Ltd. All rights reserved.
Department环境水质学国家重点实验室
KeywordAl-13 Aggregation HA coagulation Flocs Mechanism
WOS Research AreaEnvironmental Sciences
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/45979
Collection环境水质学国家重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Yangtze River Delta Branch, Yiwu 322000, Zhejiang, Peoples R China
Recommended Citation
GB/T 7714
Yue, Ye,An, Guangyu,Liu, Libing,et al. Pre-aggregation of Al-13 in optimizing coagulation for removal of humic acid[J]. CHEMOSPHERE,2021,277:-.
APA Yue, Ye,An, Guangyu,Liu, Libing,Lin, Leiming,Jiao, Ruyuan,&Wang, Dongsheng.(2021).Pre-aggregation of Al-13 in optimizing coagulation for removal of humic acid.CHEMOSPHERE,277,-.
MLA Yue, Ye,et al."Pre-aggregation of Al-13 in optimizing coagulation for removal of humic acid".CHEMOSPHERE 277(2021):-.
Files in This Item: Download All
File Name/Size DocType Version Access License
Pre-aggregation of A(2379KB)期刊论文出版稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yue, Ye]'s Articles
[An, Guangyu]'s Articles
[Liu, Libing]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yue, Ye]'s Articles
[An, Guangyu]'s Articles
[Liu, Libing]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yue, Ye]'s Articles
[An, Guangyu]'s Articles
[Liu, Libing]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Pre-aggregation of Al13 in optimizing coagulation for removal of humic acid.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.