Adaptive routing behaviors between “touch-go” and direct electron transfer of pyrogenic carbon to promote phosphorus recovery as vivianite
Microbial extracellular electron transfer (EET) driven by dissimilatory iron reduction bacteria is considered integral to elemental cycles and biochemical transformations, which involves the synthesis of the phosphate mineral vivianite in both natural aqueous systems and wastewater treatment plants...
Saved in:
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-09-01
|
| Series: | Water Research X |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S258991472500060X |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849331060214595584 |
|---|---|
| author | Danhui Liang Jifei Chang Fengai Yang Yue Wu Xiaoming Yang Hongjin Ji Shu Wang Xin Wang Nan Li |
| author_facet | Danhui Liang Jifei Chang Fengai Yang Yue Wu Xiaoming Yang Hongjin Ji Shu Wang Xin Wang Nan Li |
| author_sort | Danhui Liang |
| collection | DOAJ |
| description | Microbial extracellular electron transfer (EET) driven by dissimilatory iron reduction bacteria is considered integral to elemental cycles and biochemical transformations, which involves the synthesis of the phosphate mineral vivianite in both natural aqueous systems and wastewater treatment plants (WWTPs). Exogenous conductive mediators have been investigated to facilitate EET and iron respiration. Herein, sufficient biochar (>5 g·L−1) served as electron-transfer-station established new redox balances for iron reduction, which kinetically promoted vivianite recovery. The average iron reduction rate was increased by 107 %, leading to a 105 % enhancement of vivianite yield mediated by Geobacter sulfurreducens PCA in the presence of biochar. The OH groups as stable electron donor contributed 14 %-19 % for vivianite recovery regardless of electron exchange capacity of biochar. As the pyrolysis temperature increased from 300 to 600 ℃, quinone C = O facilitated electrons reversibly touch-go on biochar, with its contribution rising from 47 % to 66 %. Subsequently, an alternative direct electron transfer route was adaptively constructed in biochar matrix with high temperature, which dominated 52 % for vivianite recovery at 900 ℃. This study demonstrated the mechanisms of EET promoted by biochar in vivianite recovery, offering insights into biochemical electron flux and conductive networks in the coupling of iron and phosphorus recycling. |
| format | Article |
| id | doaj-art-10757dfb3cde4e7e9486dcb06d19b5bb |
| institution | Kabale University |
| issn | 2589-9147 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Water Research X |
| spelling | doaj-art-10757dfb3cde4e7e9486dcb06d19b5bb2025-08-20T03:46:45ZengElsevierWater Research X2589-91472025-09-012810036110.1016/j.wroa.2025.100361Adaptive routing behaviors between “touch-go” and direct electron transfer of pyrogenic carbon to promote phosphorus recovery as vivianiteDanhui Liang0Jifei Chang1Fengai Yang2Yue Wu3Xiaoming Yang4Hongjin Ji5Shu Wang6Xin Wang7Nan Li8Academy of Eco-Environmental Science, School of Environmental Science and Engineering, Tianjin University, No. 135 Yaguan Road, Jinnan District, Tianjin 300350, PR ChinaAcademy of Eco-Environmental Science, School of Environmental Science and Engineering, Tianjin University, No. 135 Yaguan Road, Jinnan District, Tianjin 300350, PR ChinaAcademy of Eco-Environmental Science, School of Environmental Science and Engineering, Tianjin University, No. 135 Yaguan Road, Jinnan District, Tianjin 300350, PR ChinaCollege of oceanography and ecological science, Shanghai Ocean University, Shanghai, PR ChinaAcademy of Eco-Environmental Science, School of Environmental Science and Engineering, Tianjin University, No. 135 Yaguan Road, Jinnan District, Tianjin 300350, PR ChinaAcademy of Eco-Environmental Science, School of Environmental Science and Engineering, Tianjin University, No. 135 Yaguan Road, Jinnan District, Tianjin 300350, PR ChinaPowerchina Northwest Engineering Corporation Limited, Xi’an 710065, PR ChinaMOE Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, PR ChinaAcademy of Eco-Environmental Science, School of Environmental Science and Engineering, Tianjin University, No. 135 Yaguan Road, Jinnan District, Tianjin 300350, PR China; Corresponding author.Microbial extracellular electron transfer (EET) driven by dissimilatory iron reduction bacteria is considered integral to elemental cycles and biochemical transformations, which involves the synthesis of the phosphate mineral vivianite in both natural aqueous systems and wastewater treatment plants (WWTPs). Exogenous conductive mediators have been investigated to facilitate EET and iron respiration. Herein, sufficient biochar (>5 g·L−1) served as electron-transfer-station established new redox balances for iron reduction, which kinetically promoted vivianite recovery. The average iron reduction rate was increased by 107 %, leading to a 105 % enhancement of vivianite yield mediated by Geobacter sulfurreducens PCA in the presence of biochar. The OH groups as stable electron donor contributed 14 %-19 % for vivianite recovery regardless of electron exchange capacity of biochar. As the pyrolysis temperature increased from 300 to 600 ℃, quinone C = O facilitated electrons reversibly touch-go on biochar, with its contribution rising from 47 % to 66 %. Subsequently, an alternative direct electron transfer route was adaptively constructed in biochar matrix with high temperature, which dominated 52 % for vivianite recovery at 900 ℃. This study demonstrated the mechanisms of EET promoted by biochar in vivianite recovery, offering insights into biochemical electron flux and conductive networks in the coupling of iron and phosphorus recycling.http://www.sciencedirect.com/science/article/pii/S258991472500060XBiocharElectron-transfer-stationTouch-goDirect electron transferVivianite |
| spellingShingle | Danhui Liang Jifei Chang Fengai Yang Yue Wu Xiaoming Yang Hongjin Ji Shu Wang Xin Wang Nan Li Adaptive routing behaviors between “touch-go” and direct electron transfer of pyrogenic carbon to promote phosphorus recovery as vivianite Water Research X Biochar Electron-transfer-station Touch-go Direct electron transfer Vivianite |
| title | Adaptive routing behaviors between “touch-go” and direct electron transfer of pyrogenic carbon to promote phosphorus recovery as vivianite |
| title_full | Adaptive routing behaviors between “touch-go” and direct electron transfer of pyrogenic carbon to promote phosphorus recovery as vivianite |
| title_fullStr | Adaptive routing behaviors between “touch-go” and direct electron transfer of pyrogenic carbon to promote phosphorus recovery as vivianite |
| title_full_unstemmed | Adaptive routing behaviors between “touch-go” and direct electron transfer of pyrogenic carbon to promote phosphorus recovery as vivianite |
| title_short | Adaptive routing behaviors between “touch-go” and direct electron transfer of pyrogenic carbon to promote phosphorus recovery as vivianite |
| title_sort | adaptive routing behaviors between touch go and direct electron transfer of pyrogenic carbon to promote phosphorus recovery as vivianite |
| topic | Biochar Electron-transfer-station Touch-go Direct electron transfer Vivianite |
| url | http://www.sciencedirect.com/science/article/pii/S258991472500060X |
| work_keys_str_mv | AT danhuiliang adaptiveroutingbehaviorsbetweentouchgoanddirectelectrontransferofpyrogeniccarbontopromotephosphorusrecoveryasvivianite AT jifeichang adaptiveroutingbehaviorsbetweentouchgoanddirectelectrontransferofpyrogeniccarbontopromotephosphorusrecoveryasvivianite AT fengaiyang adaptiveroutingbehaviorsbetweentouchgoanddirectelectrontransferofpyrogeniccarbontopromotephosphorusrecoveryasvivianite AT yuewu adaptiveroutingbehaviorsbetweentouchgoanddirectelectrontransferofpyrogeniccarbontopromotephosphorusrecoveryasvivianite AT xiaomingyang adaptiveroutingbehaviorsbetweentouchgoanddirectelectrontransferofpyrogeniccarbontopromotephosphorusrecoveryasvivianite AT hongjinji adaptiveroutingbehaviorsbetweentouchgoanddirectelectrontransferofpyrogeniccarbontopromotephosphorusrecoveryasvivianite AT shuwang adaptiveroutingbehaviorsbetweentouchgoanddirectelectrontransferofpyrogeniccarbontopromotephosphorusrecoveryasvivianite AT xinwang adaptiveroutingbehaviorsbetweentouchgoanddirectelectrontransferofpyrogeniccarbontopromotephosphorusrecoveryasvivianite AT nanli adaptiveroutingbehaviorsbetweentouchgoanddirectelectrontransferofpyrogeniccarbontopromotephosphorusrecoveryasvivianite |