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Influence of Fenton iron sludge on anaerobic digestion and extracellular polymeric substances of anaerobic granular sludge.

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Title: Influence of Fenton iron sludge on anaerobic digestion and extracellular polymeric substances of anaerobic granular sludge.
Authors: Wang, Xianbao1,2 (AUTHOR) wangxianbao@sust.edu.cn, Song, Baisha1 (AUTHOR), Xie, Yili1 (AUTHOR), Liu, Xiyu1 (AUTHOR), Cheng, Jinlei1 (AUTHOR), Chen, Tiantian1 (AUTHOR), Zhang, Anlong1,2 (AUTHOR)
Source: Water, Air & Soil Pollution. Mar2026, Vol. 237 Issue 5, p1-17. 17p.
Subject Terms: *Anaerobic digestion, *Methane, *Hydrolysis, *Acidification, Paper industry, Microbial aggregation, Extracellular matrix, Haber-Weiss reaction
Abstract: Fenton Iron Sludge (FIS) was used to enhance the anaerobic digestion performance of actual papermaking wastewater (PW), and the impact of FIS on the physicochemical properties of granular sludge was elucidated in this study. The experiment results indicated the addition of FIS increased the soluble chemical oxygen demand (SCOD) removal efficiency by 11.77% and the methane production by 15.13% under high organic load. The concentration of electrochemically active substances in the extracellular polymeric substances (EPS) was increased by adding FIS. Loosely bound extracellular polymeric substances (LB-EPS) and tightly bound extracellular polymeric substances (TB-EPS) in the experimental group exhibited 1.15 and 1.17 times increases in electron transport capabilities compared to the control group. In the hydrolysis experiment, the protein removal efficiency increased by 10.5%, and in the acidification experiment, the concentration of acetic acid increased by 37.7%. This indicated that FIS significantly promoted the hydrolysis and acidification process of anaerobic digestion, thereby enhancing the anaerobic digestion performance of the actual PW. [ABSTRACT FROM AUTHOR]
Copyright of Water, Air & Soil Pollution is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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An: 191291233
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  Data: Influence of Fenton iron sludge on anaerobic digestion and extracellular polymeric substances of anaerobic granular sludge.
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  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Xianbao%22">Wang, Xianbao</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> wangxianbao@sust.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Song%2C+Baisha%22">Song, Baisha</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xie%2C+Yili%22">Xie, Yili</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Xiyu%22">Liu, Xiyu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cheng%2C+Jinlei%22">Cheng, Jinlei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Tiantian%22">Chen, Tiantian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Anlong%22">Zhang, Anlong</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Water%2C+Air+%26+Soil+Pollution%22">Water, Air & Soil Pollution</searchLink>. Mar2026, Vol. 237 Issue 5, p1-17. 17p.
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  Data: *<searchLink fieldCode="DE" term="%22Anaerobic+digestion%22">Anaerobic digestion</searchLink><br />*<searchLink fieldCode="DE" term="%22Methane%22">Methane</searchLink><br />*<searchLink fieldCode="DE" term="%22Hydrolysis%22">Hydrolysis</searchLink><br />*<searchLink fieldCode="DE" term="%22Acidification%22">Acidification</searchLink><br /><searchLink fieldCode="DE" term="%22Paper+industry%22">Paper industry</searchLink><br /><searchLink fieldCode="DE" term="%22Microbial+aggregation%22">Microbial aggregation</searchLink><br /><searchLink fieldCode="DE" term="%22Extracellular+matrix%22">Extracellular matrix</searchLink><br /><searchLink fieldCode="DE" term="%22Haber-Weiss+reaction%22">Haber-Weiss reaction</searchLink>
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  Label: Abstract
  Group: Ab
  Data: Fenton Iron Sludge (FIS) was used to enhance the anaerobic digestion performance of actual papermaking wastewater (PW), and the impact of FIS on the physicochemical properties of granular sludge was elucidated in this study. The experiment results indicated the addition of FIS increased the soluble chemical oxygen demand (SCOD) removal efficiency by 11.77% and the methane production by 15.13% under high organic load. The concentration of electrochemically active substances in the extracellular polymeric substances (EPS) was increased by adding FIS. Loosely bound extracellular polymeric substances (LB-EPS) and tightly bound extracellular polymeric substances (TB-EPS) in the experimental group exhibited 1.15 and 1.17 times increases in electron transport capabilities compared to the control group. In the hydrolysis experiment, the protein removal efficiency increased by 10.5%, and in the acidification experiment, the concentration of acetic acid increased by 37.7%. This indicated that FIS significantly promoted the hydrolysis and acidification process of anaerobic digestion, thereby enhancing the anaerobic digestion performance of the actual PW. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Group: Ab
  Data: <i>Copyright of Water, Air & Soil Pollution is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s11270-025-08984-y
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        Text: English
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        PageCount: 17
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      – SubjectFull: Anaerobic digestion
        Type: general
      – SubjectFull: Methane
        Type: general
      – SubjectFull: Hydrolysis
        Type: general
      – SubjectFull: Acidification
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      – SubjectFull: Paper industry
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      – SubjectFull: Microbial aggregation
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      – SubjectFull: Extracellular matrix
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      – SubjectFull: Haber-Weiss reaction
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      – TitleFull: Influence of Fenton iron sludge on anaerobic digestion and extracellular polymeric substances of anaerobic granular sludge.
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            – D: 01
              M: 03
              Text: Mar2026
              Type: published
              Y: 2026
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              Value: 237
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            – TitleFull: Water, Air & Soil Pollution
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