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This study investigated the effects of SMT on biochar colloid transport using column experiments with five biochars produced from contrasting feedstocks, combined with spectroscopic (2D-COS-FTIR) and statistical analyses (linear regression, principal component analysis and random forest analysis) to identify the dominant controlling mechanisms. The results showed SMT adsorption capacity varied widely among the five biochars (1.86~4.52mg/g), and showed strong linear relationships with their carbon and hydrogen contents (R2 > 0.70), highlighting the importance of feedstock-dependent physicochemical properties. The presence of SMT consistently shifted the zeta (ζ) potential of biochar colloids toward more positive values and markedly reduced the electrostatic energy barrier (Φmax) between biochar colloid and quartz sand. This change substantially decreased colloid mobility (Meff), indicating enhanced retention within the porous medium. Linear regression analysis showed that Meff was closely related to the ζ potential (R2=0.88). In contrast, both PCA and random forest model analyses confirmed ζ potential as the most critical factor affecting Meff. Furthermore, the fitting results from the two-site kinetic model (R2>0.97) showed that both the reversible site adhesion coefficient (katt) and maximum solid concentration (Smax) increased for all five biochar colloids in the presence of SMT. These findings demonstrate that biochar feedstock types and SMT adsorption jointly influence the mobility of biochar colloid.

, authors=Ying-jie YIN1, Ran YIN1, Jian-ying SHANG1, 2, *, authorsList=Ying-jie YIN, Ran YIN, Jian-ying SHANG, authorCompany=null, correspAuthors=Jian-ying SHANG, 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=1314922140042888135, articleId=1314922139522794436, tenantId=1146029695717560320, journalId=1234093305789726721, language=CN, title=磺胺二甲基嘧啶对多源生物炭胶体迁移的影响, columnId=1234106388268503686, journalTitle=中国环境科学, columnName=环境生态, runingTitle=null, highlight=null, articleAbstract=

选取5种原料制备的生物炭胶体在磺胺二甲基嘧啶(SMT)存在条件下进行柱迁移实验,并利用二维相关-傅里叶变换红外光谱(2D-COS-FTIR)以及线性回归,主成分分析(PCA)和随机森林模型分析等方法探究SMT对生物炭胶体迁移的影响机制.结果表明:SMT在5种生物炭上的吸附量差异较大(1.86 ~ 4.52mg/g),这与生物炭的碳氢含量呈显著的线性相关关系(R2 > 0.70).SMT导致5种生物炭胶体的zeta(ζ)电势显著正移,其与石英砂之间的最大排斥势垒(Φmax)显著降低,导致其迁移率(Meff)显著降低.线性回归分析显示Meff与ζ电势呈显著的线性相关关系(R2 = 0.88),并且PCA和随机森林模型分析均证明ζ电势是影响Meff的最直接因素.两点动力学模型拟合结果显示,R2均大于0.97,SMT存在条件下5种生物炭胶体的可逆位点附着系数(katt)和最大固相浓度(Smax)值均增加.生物炭的原材料种类和SMT吸附共同调控其胶体迁移能力.

, authors=尹英杰1, 尹冉1, 商建英1, 2, *, authorsList=尹英杰, 尹冉, 商建英, authorCompany=null, correspAuthors=商建英, authorNote=

尹英杰(1996-),男,江西井冈山人,博士后,主要从事环境土壤学相关研究.发表论文10余篇..

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* 责任作者,教授,
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尹英杰(1996-),男,江西井冈山人,博士后,主要从事环境土壤学相关研究.发表论文10余篇..

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尹英杰(1996-),男,江西井冈山人,博士后,主要从事环境土壤学相关研究.发表论文10余篇..

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磺胺二甲基嘧啶对多源生物炭胶体迁移的影响
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尹英杰 1 , 尹冉 1 , 商建英 1, 2, *
中国环境科学 | 环境生态 2026,46(2): 989-999
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中国环境科学 |环境生态 2026 , 46 (2) : 989 -999
磺胺二甲基嘧啶对多源生物炭胶体迁移的影响
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尹英杰1 , 尹冉1, 商建英1, 2, *
作者信息
  • 1.中国农业大学土地科学与技术学院,北京 100193
  • 2.农业农村部华北耕地保育重点实验室,北京 100193
通讯作者:
* 责任作者,教授,
作者简介:

尹英杰(1996-),男,江西井冈山人,博士后,主要从事环境土壤学相关研究.发表论文10余篇..

Effect of sulfamethazine on the transport of biochar colloids derived from various feedstocks
Ying-jie YIN1 , Ran YIN1, Jian-ying SHANG1, 2, *
Affiliations
  • 1.College of Land Science and Technology, China Agricultural University, Beijing 100193, China
  • 2.Key Laboratory of Arable Land Conservation in North China, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
出版时间: 2026-02-20
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选取5种原料制备的生物炭胶体在磺胺二甲基嘧啶(SMT)存在条件下进行柱迁移实验,并利用二维相关-傅里叶变换红外光谱(2D-COS-FTIR)以及线性回归,主成分分析(PCA)和随机森林模型分析等方法探究SMT对生物炭胶体迁移的影响机制.结果表明:SMT在5种生物炭上的吸附量差异较大(1.86 ~ 4.52mg/g),这与生物炭的碳氢含量呈显著的线性相关关系(R2 > 0.70).SMT导致5种生物炭胶体的zeta(ζ)电势显著正移,其与石英砂之间的最大排斥势垒(Φmax)显著降低,导致其迁移率(Meff)显著降低.线性回归分析显示Meff与ζ电势呈显著的线性相关关系(R2 = 0.88),并且PCA和随机森林模型分析均证明ζ电势是影响Meff的最直接因素.两点动力学模型拟合结果显示,R2均大于0.97,SMT存在条件下5种生物炭胶体的可逆位点附着系数(katt)和最大固相浓度(Smax)值均增加.生物炭的原材料种类和SMT吸附共同调控其胶体迁移能力.

原材料  /  生物炭胶体  /  迁移  /  磺胺二甲基嘧啶  /  两点动力学模型

This study investigated the effects of SMT on biochar colloid transport using column experiments with five biochars produced from contrasting feedstocks, combined with spectroscopic (2D-COS-FTIR) and statistical analyses (linear regression, principal component analysis and random forest analysis) to identify the dominant controlling mechanisms. The results showed SMT adsorption capacity varied widely among the five biochars (1.86~4.52mg/g), and showed strong linear relationships with their carbon and hydrogen contents (R2 > 0.70), highlighting the importance of feedstock-dependent physicochemical properties. The presence of SMT consistently shifted the zeta (ζ) potential of biochar colloids toward more positive values and markedly reduced the electrostatic energy barrier (Φmax) between biochar colloid and quartz sand. This change substantially decreased colloid mobility (Meff), indicating enhanced retention within the porous medium. Linear regression analysis showed that Meff was closely related to the ζ potential (R2=0.88). In contrast, both PCA and random forest model analyses confirmed ζ potential as the most critical factor affecting Meff. Furthermore, the fitting results from the two-site kinetic model (R2>0.97) showed that both the reversible site adhesion coefficient (katt) and maximum solid concentration (Smax) increased for all five biochar colloids in the presence of SMT. These findings demonstrate that biochar feedstock types and SMT adsorption jointly influence the mobility of biochar colloid.

feedstock  /  biochar colloid  /  transport  /  sulfamethazine  /  two-site kinetic model
尹英杰, 尹冉, 商建英. 磺胺二甲基嘧啶对多源生物炭胶体迁移的影响. 中国环境科学, 2026 , 46 (2) : 989 -999 .
Ying-jie YIN, Ran YIN, Jian-ying SHANG. Effect of sulfamethazine on the transport of biochar colloids derived from various feedstocks[J]. China Environmental Science, 2026 , 46 (2) : 989 -999 .
  • 国家自然科学基金资助项目(42377305)
  • 国家重点研发计划项目(2023YFD1700802)
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  • 接收时间:2025-07-08
  • 首发时间:2026-10-08
  • 出版时间:2026-02-20
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  • 收稿日期:2025-07-08
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国家自然科学基金资助项目(42377305)
国家重点研发计划项目(2023YFD1700802)
作者信息
    1.中国农业大学土地科学与技术学院,北京 100193
    2.农业农村部华北耕地保育重点实验室,北京 100193

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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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