Article(id=1314917482972939014, tenantId=1146029695717560320, journalId=1234093305789726721, issueId=1314917454552327005, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1733328000000, receivedDateStr=2024-12-05, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1791430357925, onlineDateStr=2026-10-08, pubDate=1752940800000, pubDateStr=2025-07-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1791430357925, onlineIssueDateStr=2026-10-08, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1791430357925, creator=13701087609, updateTime=1791430357925, updator=13701087609, issue=Issue{id=1314917454552327005, tenantId=1146029695717560320, journalId=1234093305789726721, year='2025', volume='45', issue='7', pageStart='3553', pageEnd='4144', issueExtLink='null', onlineDate='null', pubDate='1752940800000', pubDateStr='2025-07-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1791430351150, creator='13701087609', updateTime=1791431931754, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1314924084186669335, tenantId=1146029695717560320, journalId=1234093305789726721, issueId=1314917454552327005, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1314924084186669336, tenantId=1146029695717560320, journalId=1234093305789726721, issueId=1314917454552327005, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=3896, endPage=3904, ext={EN=ArticleExt(id=1314917483207820039, articleId=1314917482972939014, tenantId=1146029695717560320, journalId=1234093305789726721, language=EN, title=Adsorption characteristics of algal organic matter by extracellular polymeric substances under the influence of Ca²⁺ and Mg²⁺, columnId=1234106388083954308, journalTitle=China Environmental Science, columnName=Environmental Ecology, runingTitle=null, highlight=null, articleAbstract=

The study focused on the influence of calcium and magnesium ions (Ca²⁺ and Mg²⁺) in karst areas on adsorption behavior between algal organic matter (AOM) of Chlorella sp. and Pseudanabaena sp. and extracellular polymeric substances (EPS) extracted from bacterial cultures were conducted. The adsorption experiments, the fitting of kinetic and isotherm adsorption models, and the analysis of spectroscopic techniques revealed the influence of divalent cations on the biosorption between EPS and AOM. The results showed that in the presence of divalent ions (Ca²⁺=89.38mg/L, Mg²⁺=17.59mg/L), the biosorption efficiencies of the EPS were improved by bridging the negatively charged functional groups (which was consistent with adsorption under quasi-secondary kinetics). Among them, the adsorption efficiency of Chlorella AOM increased from 31.57% to 59.99% due to its richer functional group structure, which was significantly higher than that of Pseudanabaena AOM (from 59.59% to 62.77%). 3D-EEM analysis showed that aromatic protein (AP) and soluble microbial product (SMP) fractions dominated the adsorption system, and Ca²⁺ and Mg²⁺ altered the stability of fluorescent components during biosorption process. In combination with a specific UV wavelength SUVA₂₅₄, the adsorption induced an increase in the content of aromatic compounds. The characteristic peak shifts detected by FTIR in the bands of 3300~3600cm^-1 (O-H/N-H groups) and 1600~1650cm^-1 (C=O groups) revealed that divalent ions combined with related functional groups to form coordinate bonds and caused bridging effects. This study demonstrated that the divalent cations enhanced the adsorption strength of AOM and EPS through charge neutralization and bridging effects.

, authors=Yi-chun FAN¹, Xing-yu LIU¹, Mao-fei NI¹, Zhang-hong WANG¹, Run-yu ZHANG², Xiao-yong LUO³, Zhi-kang WANG^{1, *}, authorsList=Yi-chun FAN, Xing-yu LIU, Mao-fei NI, Zhang-hong WANG, Run-yu ZHANG, Xiao-yong LUO, Zhi-kang WANG, authorCompany=null, correspAuthors=Zhi-kang WANG, 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=1314917483568530184, articleId=1314917482972939014, tenantId=1146029695717560320, journalId=1234093305789726721, language=CN, title=钙镁影响下胞外聚合物对藻源有机物的吸附特征, columnId=1234106388268503686, journalTitle=中国环境科学, columnName=环境生态, runingTitle=null, highlight=null, articleAbstract=

聚焦于喀斯特地区的钙镁离子（Ca²⁺/Mg²⁺）背景下，小球藻（Chlorella sp．）和伪鱼腥藻（Pseudanabaena sp．）的藻源有机物（AOM）与细菌培养物提取的胞外聚合物（EPS）之间的吸附行为分析．通过吸附实验、动力学模型和等温吸附模型拟合、光谱学技术分析等表征手段，揭示了二价阳离子对生物吸附的影响机制．研究结果显示：二价离子（Ca²⁺=89.38mg/L、Mg²⁺=17.59mg/L）存在下，通过桥接带负电的官能团（符合准二级动力学作用下的化学吸附）提高EPS的生物吸附效率，其中小球藻AOM因含有更为丰富的官能团结构，吸附效率从31.57%提高到59.99%，显著高于伪鱼腥藻AOM（从59.59%提高到62.77%）．3D-EEM解析显示吸附体系中芳香族蛋白（AP）和可溶性微生物产物（SMP）组分占主导，在吸附过程中Ca²⁺/Mg²⁺改变了荧光组分的稳定性；结合特定紫外波长SUVA₂₅₄，吸附引起了芳香族化合物含量的增加．FTIR在3300~3600cm^-1（O-H/N-H基团）和1600~1650cm^-1（C=O基团）波段检测到的特征峰位移，揭示二价离子与相关官能团结合形成配位键引起架桥作用．本研究表明，二价阳离子通过电荷中和与桥接作用而增强了EPS对AOM的吸附强度．

, authors=樊祎春¹, 刘星雨¹, 倪茂飞¹, 王章鸿¹, 张润宇², 罗小勇³, 王志康^{1, *}, authorsList=樊祎春, 刘星雨, 倪茂飞, 王章鸿, 张润宇, 罗小勇, 王志康, authorCompany=null, correspAuthors=王志康, authorNote=, correspAuthorsNote=, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=f/gEPVY4eByOX0qrHma5ng==, magXml=QY5H8bx0u1krpMzAf4C6dw==, pdfUrl=null, pdf=vpH1ruJEjTEXc6+D/j1yTA==, pdfFileSize=1516617, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=tdHDrrdcw1jivtSajtHLAg==, mapNumber=null, fund=null)}, authors=[Author(id=1314917485640516371, tenantId=1146029695717560320, journalId=1234093305789726721, articleId=1314917482972939014, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=fanyichuna@163.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1314917485707625237, tenantId=1146029695717560320, journalId=1234093305789726721, articleId=1314917482972939014, authorId=1314917485640516371, language=EN, stringName=Yi-chun FAN, firstName=Yi-chun, middleName=null, lastName=FAN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=¹, address=^1.College of Eco-Environmental Engineering, Guizhou Minzu University, Guiyang 550025, Guizhou, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1314917485787317014, tenantId=1146029695717560320, journalId=1234093305789726721, articleId=1314917482972939014, authorId=1314917485640516371, language=CN, stringName=樊祎春, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=¹, address=^1.贵州民族大学生态环境工程学院，贵州 贵阳 550025, bio={"content":"

樊祎春（2001-），女，山西运城人，贵州民族大学硕士研究生，主要从事水处理技术研究．发表论文1篇．fanyichuna@163.com.

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樊祎春（2001-），女，山西运城人，贵州民族大学硕士研究生，主要从事水处理技术研究．发表论文1篇．fanyichuna@163.com.

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