Anaerobically-digested sludge disintegration by transition metal ions-activated peroxymonosulfate (PMS): Comparison between Co2+, Cu2+, Fe(2+)and Mn2+
文献类型：期刊论文
| 作者 | Wang, Jiaqi ; Hasaer, B.; Yang, Min; Liu, Ruiping; Hu, Chengzhi; Liu, Huijuan; Qu, Jiuhui
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
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| 出版日期 | 2020-04-15 |
| 卷号 | 713页码:1-9 |
| 关键词 | Sludge disintegration Peroxymonosulfate activation Extracellular polymeric substances Transition metal species Particle size distribution |
| ISSN号 | 0048-9697 |
| 英文摘要 | This study investigates anaerobically-digested sludge (ADS) disintegration by activated peroxymonosulfate (PMS) with transition metal ions of Co2+, Cu2+, Fe2+, and Mn2+ (PMS-Me2+). The activating performances of Me2+ are quantitatively compared by capillary suction time (CST), extracellular polymeric substances (EPS), bound water content (BWC), particle size distribution, and metal spedation. At Me2+, dose of 12 mmol/g VSS, PMS-Fe2+ and PMS-Cu2+ achieve the lowest normalized CST, i.e., CST/CST0, of 0.47, and the higher normalized CST values of 0.71 and 0.74 arc observed for PMS-Mn2+ and PMS-Co2+, respectively. BWC shows little extent of decrease upon PMS-Me2+ oxidation, and the most significant decrease from 89.5% to 883% is observed for PMS-Mn2+. PMS-Co(2+ )contributes to the decrease of DOC in total EPS fractions (DOCtot) from 698.0 mg/L to 496.6 mg/L, whereas the increased DOCtot to 713.6, 734.4, and 755.0 mg/L is observed with the introduction of Cu2+, Fe2+, and Mn2+, respectively. Fe(2+ )tends to transform to Fe3+ and the coagulation effect increases the median particle diameter (D-50) from 15.8 mu m to 91.1 mu m. Comparatively, much lower D-50 values of below 20.0 pm are observed for other divalent ions. The European Community Bureau of Reference (BCR) sequential extraction method is used to analyze the metal spedation in ADS sediment after PMS-Me2+ disintegration. The dominant species of Co and Mn are acid extractable fractions with the ratios of 91.0% and 87.3%, whereas the main Fe and Cu species are observed to be residual and oxidizable fractions. The pre-captured Me2+ ions with 50-days aging interestingly exhibit activating efficacy towards PMS, and CST values were observed 11.5%, 30.5%. 11.8%, and 27.3% with the presence of pre-captured Co2+, Cu2+, Fe2+, and Mn2+ at 1.2 mmol/g VSS. This study proposes the potentially valuable strategy for the disintegration and dewatering of sludge with high contents of transition metal ions. (C) 2020 Published by Elsevier B.V. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45238]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 推荐引用方式 GB/T 7714 | Wang, Jiaqi,Hasaer, B.,Yang, Min,et al. Anaerobically-digested sludge disintegration by transition metal ions-activated peroxymonosulfate (PMS): Comparison between Co2+, Cu2+, Fe(2+)and Mn2+[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,713:1-9. |
| APA | Wang, Jiaqi.,Hasaer, B..,Yang, Min.,Liu, Ruiping.,Hu, Chengzhi.,...&Qu, Jiuhui.(2020).Anaerobically-digested sludge disintegration by transition metal ions-activated peroxymonosulfate (PMS): Comparison between Co2+, Cu2+, Fe(2+)and Mn2+.SCIENCE OF THE TOTAL ENVIRONMENT,713,1-9. |
| MLA | Wang, Jiaqi,et al."Anaerobically-digested sludge disintegration by transition metal ions-activated peroxymonosulfate (PMS): Comparison between Co2+, Cu2+, Fe(2+)and Mn2+".SCIENCE OF THE TOTAL ENVIRONMENT 713(2020):1-9. |
入库方式： OAI收割
来源：生态环境研究中心
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