Sludge biodrying coupled with photocatalysis improves the degradation of extracellular polymeric substances
文献类型：期刊论文
| 作者 | Cai, Lu; Cao, Meng-Ke; Zheng, Guo-Di; Wang, Xin-Yu; Guo, Han-Tong; Jiang, Tao5 |
| 刊名 | JOURNAL OF ENVIRONMENTAL MANAGEMENT
 |
| 出版日期 | 2023-11-01 |
| 卷号 | 345页码:118590 |
| 关键词 | Sludge dewatering Biodrying TiO 2 photocatalysis Extracellular polymeric substances Hydrophobic amino acid |
| DOI | 10.1016/j.jenvman.2023.118590 |
| 文献子类 | Article |
| 英文摘要 | The efficiency of sludge dewatering is limited by extracellular polymeric substances (EPS) during biodrying. This study investigated the effect of photocatalysis-mediated EPS degradation on sludge dewatering performance during the sludge biodrying process. The photocatalysis of municipal sludge was first carried out to choose a costefficient catalyst. Then sludge biodrying tests were performed using TiO2-coated amendment (TCA) and uncoated amendment (TUCA) as the control. Municipal sludge photocatalysis results showed that using TiO2 could efficiently degrade carbohydrates and proteins in the EPS within 60 min. After 20-day biodrying, photocatalysis significantly promoted a reduction in the moisture content and EPS by 17.64% and 6.88%, respectively. The surface-enhanced Raman scattering (SERS) intensities of the C-C-O symmetric stretching vibration peak of Dlactose and the C-S stretching vibration peak of cysteine were significantly decreased by approximately 33.19% and 44.76%, respectively, indicating that photocatalysis indeed promoted the reduction of polysaccharides and cysteine in the EPS, especially after the thermophilic phase. The hydrophilic amino acid content decreased by 23.02%, verifying that photocatalysis could improve EPS hydrophobicity. Consequently, municipal sludge biodrying coupled with photocatalysis promotes sludge EPS degradation and enhances sludge dewaterability, improving the efficiency of sludge biodrying. |
| WOS关键词 | SEWAGE-SLUDGE ; WASTE-WATER ; DEWATERABILITY ; STABILITY |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS记录号 | WOS:001118658000001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/200947]  |
| 专题 | 资源利用与环境修复重点实验室_外文论文 |
| 作者单位 | 1.[Zheng, Guo-Di 2.Ningbo Univ, Sch Civil & Environm Engn, Sch Phys Sci & Technol, Ningbo 315211, Peoples R China 3.Cao, Meng-Ke 4.[Cai, Lu 5.Wang, Xin-Yu 6.Chinese Acad Sci, Inst Geograph Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, Lu,Cao, Meng-Ke,Zheng, Guo-Di,et al. Sludge biodrying coupled with photocatalysis improves the degradation of extracellular polymeric substances[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2023,345:118590. |
| APA | Cai, Lu,Cao, Meng-Ke,Zheng, Guo-Di,Wang, Xin-Yu,Guo, Han-Tong,&Jiang, Tao.(2023).Sludge biodrying coupled with photocatalysis improves the degradation of extracellular polymeric substances.JOURNAL OF ENVIRONMENTAL MANAGEMENT,345,118590. |
| MLA | Cai, Lu,et al."Sludge biodrying coupled with photocatalysis improves the degradation of extracellular polymeric substances".JOURNAL OF ENVIRONMENTAL MANAGEMENT 345(2023):118590. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。