Enhanced dewaterability of sewage sludge in the presence of Fe(II)-activated persulfate oxidation
► First scientific attempt to apply sulfate radicals to sludge dewatering. ► 88.8% CST reduction efficiency was obtained within 1min. ► Both soluble EPS and viscosity played negative roles in sludge dewatering. ► No correlation was established between dewaterability and bound EPS. ► Soluble EPS were...
Gespeichert in:
| Veröffentlicht in: | Bioresource technology 2012-07, Vol.116, p.259-265 |
|---|---|
| Hauptverfasser: | , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 265 |
|---|---|
| container_issue | |
| container_start_page | 259 |
| container_title | Bioresource technology |
| container_volume | 116 |
| creator | Zhen, Guangyin Lu, Xueqin Zhao, Youcai Chai, Xiaoli Niu, Dongjie |
| description | ► First scientific attempt to apply sulfate radicals to sludge dewatering. ► 88.8% CST reduction efficiency was obtained within 1min. ► Both soluble EPS and viscosity played negative roles in sludge dewatering. ► No correlation was established between dewaterability and bound EPS. ► Soluble EPS were degraded and flocs were ruptured, inducing the dewaterability improvement.
The potential benefits of Fe(II)-activated persulfate oxidation on sludge dewatering and its mechanisms were investigated in this study. Capillary suction time (CST) was used to evaluate sludge dewaterability. Both extracellular polymeric substances (EPS) and viscosity were determined in an attempt to explain the observed changes in sludge dewaterability. The optimal conditions to give preferable dewaterability characteristics were found to be persulfate (S2O82-) 1.2mmol/gVSS, Fe(II) 1.5mmol/gVSS, and pH 3.0–8.5, which demonstrated a very high CST reduction efficiency (88.8% reduction within 1min). It was further observed that both soluble EPS and viscosity played relatively negative roles in sludge dewatering, whereas no correlation was established between sludge dewaterability and bound EPS. Three-dimensional excitation–emission matrix (EEM) fluorescence spectra also revealed that soluble EPS of sludge were degraded and sludge flocs were ruptured by persulfate oxidation, which caused the release of water in the intracellular pace and subsequent improvement of its dewaterability. |
| doi_str_mv | 10.1016/j.biortech.2012.01.170 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1038605820</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0960852412002155</els_id><sourcerecordid>1018634221</sourcerecordid><originalsourceid>FETCH-LOGICAL-c467t-9f885405ab7503151aa23b93de72c31f18be5a2e667440e913fa9c733289f0323</originalsourceid><addsrcrecordid>eNqNkU9P3DAQxS3UCpZtvwLKkR4SxnZiO7dWiD8rIXGhZ8uxJ12vssnWdij77fFqoVc4zWj0ezOj9wi5oFBRoOJqU3V-CgntumJAWQW0ohJOyIIqyUvWSvGFLKAVUKqG1WfkPMYNAHAq2Sk5Y6ypGeVqQczNuDajRVc4_GcSBtP5wad9MfVFzJM_WMRhdrn4sUhrLHYBI2bBAbjFy9XqR2ls8s9Z64odhjgPfe6L6cU7k_w0fiNfezNE_P5Wl-T37c3T9X358Hi3uv71UNpayFS2vVJNDY3pZJPfbKgxjHctdyiZ5bSnqsPGMBRC1jVgS3lvWis5Z6rtgTO-JJfHvbsw_Z0xJr310eIwmBGnOWoKXAloFINPoFQJXrNs0ZKII2rDFGPAXu-C35qwz9CBE3qj35PQhyQ0UJ2TyMKLtxtzt0X3X_ZufQZ-HgHMpjx7DDpaf3DW-YA2aTf5j268AoZxnEQ</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1018634221</pqid></control><display><type>article</type><title>Enhanced dewaterability of sewage sludge in the presence of Fe(II)-activated persulfate oxidation</title><source>MEDLINE</source><source>Elsevier ScienceDirect Journals Complete</source><creator>Zhen, Guangyin ; Lu, Xueqin ; Zhao, Youcai ; Chai, Xiaoli ; Niu, Dongjie</creator><creatorcontrib>Zhen, Guangyin ; Lu, Xueqin ; Zhao, Youcai ; Chai, Xiaoli ; Niu, Dongjie</creatorcontrib><description>► First scientific attempt to apply sulfate radicals to sludge dewatering. ► 88.8% CST reduction efficiency was obtained within 1min. ► Both soluble EPS and viscosity played negative roles in sludge dewatering. ► No correlation was established between dewaterability and bound EPS. ► Soluble EPS were degraded and flocs were ruptured, inducing the dewaterability improvement.
The potential benefits of Fe(II)-activated persulfate oxidation on sludge dewatering and its mechanisms were investigated in this study. Capillary suction time (CST) was used to evaluate sludge dewaterability. Both extracellular polymeric substances (EPS) and viscosity were determined in an attempt to explain the observed changes in sludge dewaterability. The optimal conditions to give preferable dewaterability characteristics were found to be persulfate (S2O82-) 1.2mmol/gVSS, Fe(II) 1.5mmol/gVSS, and pH 3.0–8.5, which demonstrated a very high CST reduction efficiency (88.8% reduction within 1min). It was further observed that both soluble EPS and viscosity played relatively negative roles in sludge dewatering, whereas no correlation was established between sludge dewaterability and bound EPS. Three-dimensional excitation–emission matrix (EEM) fluorescence spectra also revealed that soluble EPS of sludge were degraded and sludge flocs were ruptured by persulfate oxidation, which caused the release of water in the intracellular pace and subsequent improvement of its dewaterability.</description><identifier>ISSN: 0960-8524</identifier><identifier>EISSN: 1873-2976</identifier><identifier>DOI: 10.1016/j.biortech.2012.01.170</identifier><identifier>PMID: 22542138</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Biopolymers - pharmacology ; Dewaterability ; Dewatering ; Dewatering (separation process) ; EPS ; Ethanol - pharmacology ; Excitation–emission matrix (EEM) ; Extracellular polymeric substances (EPS) ; Extracellular Space - chemistry ; Extracellular Space - drug effects ; Hydrogen-Ion Concentration - drug effects ; Ions ; Iron - pharmacology ; Oxidation ; Oxidation-Reduction - drug effects ; Potassium Compounds - metabolism ; Reduction ; Sewage - chemistry ; Sludge ; Spectra ; Spectrometry, Fluorescence ; Sulfate radicals ; Sulfates - metabolism ; tert-Butyl Alcohol - pharmacology ; Time Factors ; Viscosity ; Viscosity - drug effects ; Water - chemistry</subject><ispartof>Bioresource technology, 2012-07, Vol.116, p.259-265</ispartof><rights>2012 Elsevier Ltd</rights><rights>Copyright © 2012 Elsevier Ltd. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c467t-9f885405ab7503151aa23b93de72c31f18be5a2e667440e913fa9c733289f0323</citedby><cites>FETCH-LOGICAL-c467t-9f885405ab7503151aa23b93de72c31f18be5a2e667440e913fa9c733289f0323</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0960852412002155$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65534</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22542138$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Zhen, Guangyin</creatorcontrib><creatorcontrib>Lu, Xueqin</creatorcontrib><creatorcontrib>Zhao, Youcai</creatorcontrib><creatorcontrib>Chai, Xiaoli</creatorcontrib><creatorcontrib>Niu, Dongjie</creatorcontrib><title>Enhanced dewaterability of sewage sludge in the presence of Fe(II)-activated persulfate oxidation</title><title>Bioresource technology</title><addtitle>Bioresour Technol</addtitle><description>► First scientific attempt to apply sulfate radicals to sludge dewatering. ► 88.8% CST reduction efficiency was obtained within 1min. ► Both soluble EPS and viscosity played negative roles in sludge dewatering. ► No correlation was established between dewaterability and bound EPS. ► Soluble EPS were degraded and flocs were ruptured, inducing the dewaterability improvement.
The potential benefits of Fe(II)-activated persulfate oxidation on sludge dewatering and its mechanisms were investigated in this study. Capillary suction time (CST) was used to evaluate sludge dewaterability. Both extracellular polymeric substances (EPS) and viscosity were determined in an attempt to explain the observed changes in sludge dewaterability. The optimal conditions to give preferable dewaterability characteristics were found to be persulfate (S2O82-) 1.2mmol/gVSS, Fe(II) 1.5mmol/gVSS, and pH 3.0–8.5, which demonstrated a very high CST reduction efficiency (88.8% reduction within 1min). It was further observed that both soluble EPS and viscosity played relatively negative roles in sludge dewatering, whereas no correlation was established between sludge dewaterability and bound EPS. Three-dimensional excitation–emission matrix (EEM) fluorescence spectra also revealed that soluble EPS of sludge were degraded and sludge flocs were ruptured by persulfate oxidation, which caused the release of water in the intracellular pace and subsequent improvement of its dewaterability.</description><subject>Biopolymers - pharmacology</subject><subject>Dewaterability</subject><subject>Dewatering</subject><subject>Dewatering (separation process)</subject><subject>EPS</subject><subject>Ethanol - pharmacology</subject><subject>Excitation–emission matrix (EEM)</subject><subject>Extracellular polymeric substances (EPS)</subject><subject>Extracellular Space - chemistry</subject><subject>Extracellular Space - drug effects</subject><subject>Hydrogen-Ion Concentration - drug effects</subject><subject>Ions</subject><subject>Iron - pharmacology</subject><subject>Oxidation</subject><subject>Oxidation-Reduction - drug effects</subject><subject>Potassium Compounds - metabolism</subject><subject>Reduction</subject><subject>Sewage - chemistry</subject><subject>Sludge</subject><subject>Spectra</subject><subject>Spectrometry, Fluorescence</subject><subject>Sulfate radicals</subject><subject>Sulfates - metabolism</subject><subject>tert-Butyl Alcohol - pharmacology</subject><subject>Time Factors</subject><subject>Viscosity</subject><subject>Viscosity - drug effects</subject><subject>Water - chemistry</subject><issn>0960-8524</issn><issn>1873-2976</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkU9P3DAQxS3UCpZtvwLKkR4SxnZiO7dWiD8rIXGhZ8uxJ12vssnWdij77fFqoVc4zWj0ezOj9wi5oFBRoOJqU3V-CgntumJAWQW0ohJOyIIqyUvWSvGFLKAVUKqG1WfkPMYNAHAq2Sk5Y6ypGeVqQczNuDajRVc4_GcSBtP5wad9MfVFzJM_WMRhdrn4sUhrLHYBI2bBAbjFy9XqR2ls8s9Z64odhjgPfe6L6cU7k_w0fiNfezNE_P5Wl-T37c3T9X358Hi3uv71UNpayFS2vVJNDY3pZJPfbKgxjHctdyiZ5bSnqsPGMBRC1jVgS3lvWis5Z6rtgTO-JJfHvbsw_Z0xJr310eIwmBGnOWoKXAloFINPoFQJXrNs0ZKII2rDFGPAXu-C35qwz9CBE3qj35PQhyQ0UJ2TyMKLtxtzt0X3X_ZufQZ-HgHMpjx7DDpaf3DW-YA2aTf5j268AoZxnEQ</recordid><startdate>201207</startdate><enddate>201207</enddate><creator>Zhen, Guangyin</creator><creator>Lu, Xueqin</creator><creator>Zhao, Youcai</creator><creator>Chai, Xiaoli</creator><creator>Niu, Dongjie</creator><general>Elsevier Ltd</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7SU</scope><scope>7TB</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>201207</creationdate><title>Enhanced dewaterability of sewage sludge in the presence of Fe(II)-activated persulfate oxidation</title><author>Zhen, Guangyin ; Lu, Xueqin ; Zhao, Youcai ; Chai, Xiaoli ; Niu, Dongjie</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c467t-9f885405ab7503151aa23b93de72c31f18be5a2e667440e913fa9c733289f0323</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Biopolymers - pharmacology</topic><topic>Dewaterability</topic><topic>Dewatering</topic><topic>Dewatering (separation process)</topic><topic>EPS</topic><topic>Ethanol - pharmacology</topic><topic>Excitation–emission matrix (EEM)</topic><topic>Extracellular polymeric substances (EPS)</topic><topic>Extracellular Space - chemistry</topic><topic>Extracellular Space - drug effects</topic><topic>Hydrogen-Ion Concentration - drug effects</topic><topic>Ions</topic><topic>Iron - pharmacology</topic><topic>Oxidation</topic><topic>Oxidation-Reduction - drug effects</topic><topic>Potassium Compounds - metabolism</topic><topic>Reduction</topic><topic>Sewage - chemistry</topic><topic>Sludge</topic><topic>Spectra</topic><topic>Spectrometry, Fluorescence</topic><topic>Sulfate radicals</topic><topic>Sulfates - metabolism</topic><topic>tert-Butyl Alcohol - pharmacology</topic><topic>Time Factors</topic><topic>Viscosity</topic><topic>Viscosity - drug effects</topic><topic>Water - chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhen, Guangyin</creatorcontrib><creatorcontrib>Lu, Xueqin</creatorcontrib><creatorcontrib>Zhao, Youcai</creatorcontrib><creatorcontrib>Chai, Xiaoli</creatorcontrib><creatorcontrib>Niu, Dongjie</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Environmental Engineering Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Bioresource technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhen, Guangyin</au><au>Lu, Xueqin</au><au>Zhao, Youcai</au><au>Chai, Xiaoli</au><au>Niu, Dongjie</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Enhanced dewaterability of sewage sludge in the presence of Fe(II)-activated persulfate oxidation</atitle><jtitle>Bioresource technology</jtitle><addtitle>Bioresour Technol</addtitle><date>2012-07</date><risdate>2012</risdate><volume>116</volume><spage>259</spage><epage>265</epage><pages>259-265</pages><issn>0960-8524</issn><eissn>1873-2976</eissn><abstract>► First scientific attempt to apply sulfate radicals to sludge dewatering. ► 88.8% CST reduction efficiency was obtained within 1min. ► Both soluble EPS and viscosity played negative roles in sludge dewatering. ► No correlation was established between dewaterability and bound EPS. ► Soluble EPS were degraded and flocs were ruptured, inducing the dewaterability improvement.
The potential benefits of Fe(II)-activated persulfate oxidation on sludge dewatering and its mechanisms were investigated in this study. Capillary suction time (CST) was used to evaluate sludge dewaterability. Both extracellular polymeric substances (EPS) and viscosity were determined in an attempt to explain the observed changes in sludge dewaterability. The optimal conditions to give preferable dewaterability characteristics were found to be persulfate (S2O82-) 1.2mmol/gVSS, Fe(II) 1.5mmol/gVSS, and pH 3.0–8.5, which demonstrated a very high CST reduction efficiency (88.8% reduction within 1min). It was further observed that both soluble EPS and viscosity played relatively negative roles in sludge dewatering, whereas no correlation was established between sludge dewaterability and bound EPS. Three-dimensional excitation–emission matrix (EEM) fluorescence spectra also revealed that soluble EPS of sludge were degraded and sludge flocs were ruptured by persulfate oxidation, which caused the release of water in the intracellular pace and subsequent improvement of its dewaterability.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>22542138</pmid><doi>10.1016/j.biortech.2012.01.170</doi><tpages>7</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0960-8524 |
| ispartof | Bioresource technology, 2012-07, Vol.116, p.259-265 |
| issn | 0960-8524 1873-2976 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1038605820 |
| source | MEDLINE; Elsevier ScienceDirect Journals Complete |
| subjects | Biopolymers - pharmacology Dewaterability Dewatering Dewatering (separation process) EPS Ethanol - pharmacology Excitation–emission matrix (EEM) Extracellular polymeric substances (EPS) Extracellular Space - chemistry Extracellular Space - drug effects Hydrogen-Ion Concentration - drug effects Ions Iron - pharmacology Oxidation Oxidation-Reduction - drug effects Potassium Compounds - metabolism Reduction Sewage - chemistry Sludge Spectra Spectrometry, Fluorescence Sulfate radicals Sulfates - metabolism tert-Butyl Alcohol - pharmacology Time Factors Viscosity Viscosity - drug effects Water - chemistry |
| title | Enhanced dewaterability of sewage sludge in the presence of Fe(II)-activated persulfate oxidation |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-14T11%3A51%3A19IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Enhanced%20dewaterability%20of%20sewage%20sludge%20in%20the%20presence%20of%20Fe(II)-activated%20persulfate%20oxidation&rft.jtitle=Bioresource%20technology&rft.au=Zhen,%20Guangyin&rft.date=2012-07&rft.volume=116&rft.spage=259&rft.epage=265&rft.pages=259-265&rft.issn=0960-8524&rft.eissn=1873-2976&rft_id=info:doi/10.1016/j.biortech.2012.01.170&rft_dat=%3Cproquest_cross%3E1018634221%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1018634221&rft_id=info:pmid/22542138&rft_els_id=S0960852412002155&rfr_iscdi=true |