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In this study, the effect of sodium citrate (CA) combined with potassium permanganate (PM) pretreatment strategy on the acid production efficiency of waste activated sludge (WAS) anaerobic fermentation was investigated, and the promotion mechanism of CA synergistic PM significantly increased the accumulation of short-chain fatty acids (SCFAs). The results showed that, the production of SCFAs after CA and PM pretreatment reached a peak of 15777.54mg COD/L on the 6th day, which was increased by 6.41 times and 3.18 times compared with the control group and the PM group, respectively. At the same time, the proportion of acetic acid in SCFAs was also significantly increased. The reason is that CA and PM pretreatment enhance the structural destruction of extracellular polymer (EPS) in the sludge, release a large amount of soluble organic matter, and provide a richer substrate for microbial metabolism. Microbial community analysis further revealed that pretreatment reduced the overall diversity of microbial communities, significantly enriched functional flora related to hydrolysis and acid production, and inhibited SCFAs-depleting flora.

, authors=Hui-lin LUAN, Zheng-jiang WANG, Kang LIANG, Tuo-hong LIU, You-lin LUO, Si-jing WEN, Zhen-lun LI^*, authorsList=Hui-lin LUAN, Zheng-jiang WANG, Kang LIANG, Tuo-hong LIU, You-lin LUO, Si-jing WEN, Zhen-lun LI, authorCompany=null, correspAuthors=Zhen-lun LI, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1314923063163060422, articleId=1314923061363704004, tenantId=1146029695717560320, journalId=1234093305789726721, language=CN, title=柠檬酸钠协同高锰酸钾促进剩余污泥产短链脂肪酸及机制, columnId=1240689598737731645, journalTitle=中国环境科学, columnName=固体废物, runingTitle=null, highlight=null, articleAbstract=

探究柠檬酸钠（CA）联合高锰酸钾（PM）预处理策略对剩余污泥（WAS）厌氧发酵产酸效能的影响，并探讨CA协同PM显著提升短链脂肪酸（SCFAs）积累的促进机制．结果表明，CA协同PM预处理后的SCFAs产量在第6d达到峰值15777.54mg COD/L，相较于对照组和PM组，分别提高了6.41倍和3.18倍．同时，乙酸在SCFAs中的比例也显著提升；其原因是CA协同PM预处理强化了污泥胞外聚合物（EPS）结构的破坏，释放大量可溶性有机物，为微生物代谢提供了更丰富的底物；微生物群落分析进一步揭示，预处理降低了微生物群落的总体多样性，显著富集了与水解和产酸相关的功能菌群，抑制了SCFAs消耗菌群．

, authors=栾惠琳, 王正江, 梁康, 刘拓宏, 罗有林, 文思婧, 李振轮^*, authorsList=栾惠琳, 王正江, 梁康, 刘拓宏, 罗有林, 文思婧, 李振轮, authorCompany=null, correspAuthors=李振轮, authorNote=, correspAuthorsNote=, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=od89Uu2HjzL4GOvDb1XPrw==, magXml=bHa5ydZMq7fYGtxPdqeQVw==, pdfUrl=null, pdf=7BWol10pKXx1Owlt1cTSTg==, pdfFileSize=1947665, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=+nicDp4P5KA8G38qHPRERw==, mapNumber=null, fund=null)}, authors=[Author(id=1314923063444078795, tenantId=1146029695717560320, journalId=1234093305789726721, articleId=1314923061363704004, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=1916719307@qq.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1314923063532159181, tenantId=1146029695717560320, journalId=1234093305789726721, articleId=1314923061363704004, authorId=1314923063444078795, language=EN, stringName=Hui-lin LUAN, firstName=Hui-lin, middleName=null, lastName=LUAN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=Chongqing Key Laboratory of Interface Process and Soil Health, College of Resources and Environment, Southwest University, Chongqing 400715, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1314923063607656654, tenantId=1146029695717560320, journalId=1234093305789726721, articleId=1314923061363704004, authorId=1314923063444078795, language=CN, stringName=栾惠琳, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=西南大学资源环境学院，重庆市界面过程与土壤健康重点实验室，重庆 400715, bio={"content":"

栾惠琳（2001-），女，山东烟台人，西南大学硕士研究生，主要从事农业固体废弃物资源化利用研究．1916719307@qq.com.

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栾惠琳（2001-），女，山东烟台人，西南大学硕士研究生，主要从事农业固体废弃物资源化利用研究．1916719307@qq.com.

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