Characterization of changes in floc morphology, extracellular polymeric substances and heavy metals speciation of anaerobically digested biosolid under treatment with a novel chelated-Fe2+ catalyzed Fenton process
文献类型：期刊论文
| 作者 | Luo, Xi; He, Juanjuan; Yang, Peng; Zhang, Weijun; Cao, Bingdi; Xia, Hua; Wang, Dongsheng |
| 刊名 | BIORESOURCE TECHNOLOGY
 |
| 出版日期 | 2017-11-01 |
| 卷号 | 243期号:0页码:641-651 |
| 关键词 | Anaerobically Digested Sludge Chelating Agents Dewaterability Extracellular Polymeric Substances (Eps) Fenton Oxidation Heavy Metals |
| 英文摘要 | A novel chelated-Fe2+ catalyzed Fenton process (CCFP) was developed to enhance dewatering performance of anaerobically digested biosolid, and changes in floc morphology, extracellular polymeric substances (EPS) and heavy metals speciation were also investigated. The results showed that addition of chelating agents caused EPS solubilization by binding multivalent cations. Like traditional Fenton, CCFP performed well in improving anaerobically digested sludge dewatering property. The highly active radicals ((OH)-O-center dot, O-center dot(2)-) produced in classical Fenton and CCFP were responsible for sludge flocs destruction and consequently degradation of biopolymers into small molecules. Furthermore, more plentiful pores and channels were presented in cake after Fenton treatment, which was conducive to water drainage under mechanical compression. Additionally, a portion of active heavy metals in the form of oxidizable and reducible states were dissolved under CCFP. Therefore, CCFP could greatly simplify the operating procedure of Fenton conditioning and improve its process adaptability for harmless treatment of biological sludge. (C) 2017 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/39480]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Luo, Xi,He, Juanjuan,Yang, Peng,et al. Characterization of changes in floc morphology, extracellular polymeric substances and heavy metals speciation of anaerobically digested biosolid under treatment with a novel chelated-Fe2+ catalyzed Fenton process[J]. BIORESOURCE TECHNOLOGY,2017,243(0):641-651. |
| APA | Luo, Xi.,He, Juanjuan.,Yang, Peng.,Zhang, Weijun.,Cao, Bingdi.,...&Wang, Dongsheng.(2017).Characterization of changes in floc morphology, extracellular polymeric substances and heavy metals speciation of anaerobically digested biosolid under treatment with a novel chelated-Fe2+ catalyzed Fenton process.BIORESOURCE TECHNOLOGY,243(0),641-651. |
| MLA | Luo, Xi,et al."Characterization of changes in floc morphology, extracellular polymeric substances and heavy metals speciation of anaerobically digested biosolid under treatment with a novel chelated-Fe2+ catalyzed Fenton process".BIORESOURCE TECHNOLOGY 243.0(2017):641-651. |
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来源：生态环境研究中心
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