Feasibility of using drinking water treatment residuals as a novel chlorpyrifos adsorbent

Zhao, Yuanyuan, Wang, Changhui, Wendling, Laura A. and Pei, Yuansheng (2013) Feasibility of using drinking water treatment residuals as a novel chlorpyrifos adsorbent. Journal of Agricultural and Food Chemistry, 61 31: 7446-7452. doi:10.1021/jf401763f


Author Zhao, Yuanyuan
Wang, Changhui
Wendling, Laura A.
Pei, Yuansheng
Title Feasibility of using drinking water treatment residuals as a novel chlorpyrifos adsorbent
Journal name Journal of Agricultural and Food Chemistry   Check publisher's open access policy
ISSN 0021-8561
1520-5118
Publication date 2013-08-07
Sub-type Article (original research)
DOI 10.1021/jf401763f
Volume 61
Issue 31
Start page 7446
End page 7452
Total pages 7
Place of publication Washington, DC, United States
Publisher American Chemical Society
Collection year 2014
Language eng
Formatted abstract
ecent efforts have increasingly focused on the development of low-cost adsorbents for pesticide retention. In this work, the novel reuse of drinking water treatment residuals (WTRs), a nonhazardous ubiquitous byproduct, as an adsorbent for chlorpyrifos was investigated. Results showed that the kinetics and isothermal processes of chlorpyrifos sorption to WTRs were better described by a pseudo-second-order model and by the Freundlich equation, respectively. Moreover, compared with paddy soil and other documented absorbents, the WTRs exhibited a greater affinity for chlorpyrifos (log Koc = 4.76–4.90) and a higher chlorpyrifos sorption capacity (KF = 5967 mg1–n·L·kg–1) owing to the character and high content of organic matter. Further investigation demonstrated that the pH had a slight but statistically insignificant effect on chlorpyrifos sorption to WTRs; solution ionic strength and the presence of low molecular weight organic acids both resulted in concentration-dependent inhibition effects. Overall, these results confirmed the feasibility of using WTRs as a novel chlorpyrifos adsorbent.
Keyword Chlorpyrifos sorption
Kinetics
Water treatment residuals
Paddy soil
Solution chemistry
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
School of Agriculture and Food Sciences
 
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Created: Sat, 01 Feb 2014, 01:47:57 EST by Laura Wendling on behalf of School of Agriculture and Food Sciences