Electricity production performance and pH optimization of MFCs using enriched starch-degrading culture
Summary: The untreated wastewater from starch production can damage the balance of the aquatic ecosystems. This study enriched a mixed culture (EHN) with electrochemical activity and starch degradation capabilities. EHN exhibited growth across a pH range of 5.5–9.5, with electricity generation perfo...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-02-01
|
| Series: | iScience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004225001294 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1823856792474484736 |
|---|---|
| author | Sheng-chao Gao Hui-chun Jiang Zhen Zhang Xin-xin Fan Tian-peng Gao Ying Liu |
| author_facet | Sheng-chao Gao Hui-chun Jiang Zhen Zhang Xin-xin Fan Tian-peng Gao Ying Liu |
| author_sort | Sheng-chao Gao |
| collection | DOAJ |
| description | Summary: The untreated wastewater from starch production can damage the balance of the aquatic ecosystems. This study enriched a mixed culture (EHN) with electrochemical activity and starch degradation capabilities. EHN exhibited growth across a pH range of 5.5–9.5, with electricity generation performance investigated at different pH levels. At pH 9.0, the maximum current density was 556.83 μA cm−2, 17.77 and 72.51 times higher than that at pH 7.2 and 5.5, respectively. The maximum power density and voltage at pH 9.0 were 1,499.93 mW m−2 and 631.00 mV, respectively, higher than those at pH 7.2. Bacillus was the dominant genus at pH 9.0. High-performance liquid chromatography (HPLC) revealed faster starch degradation and acetate production at pH 9.0, attributed to enhanced amylase activity, which indirectly boosted EHN’s electricity generation. This work highlights the potential of EHN in wastewater treatment and bioelectricity generation. |
| format | Article |
| id | doaj-art-f75eecb0225740a7ae46687f17c9561e |
| institution | Kabale University |
| issn | 2589-0042 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj-art-f75eecb0225740a7ae46687f17c9561e2025-02-12T05:31:39ZengElsevieriScience2589-00422025-02-01282111869Electricity production performance and pH optimization of MFCs using enriched starch-degrading cultureSheng-chao Gao0Hui-chun Jiang1Zhen Zhang2Xin-xin Fan3Tian-peng Gao4Ying Liu5Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, No. 22 Xinong Road, Yangling, Shaanxi Province 712100, P.R. ChinaShaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, No. 22 Xinong Road, Yangling, Shaanxi Province 712100, P.R. ChinaShaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, No. 22 Xinong Road, Yangling, Shaanxi Province 712100, P.R. ChinaShaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, No. 22 Xinong Road, Yangling, Shaanxi Province 712100, P.R. ChinaThe Engineering Research Center of Mining Pollution Treatment and Ecological Restoration of Gansu Province, Lanzhou City University, Lanzhou 730070, China; College of Biological and Environmental Engineering, Xi’an University, Xi’an 710065, China; Corresponding authorShaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, No. 22 Xinong Road, Yangling, Shaanxi Province 712100, P.R. China; Corresponding authorSummary: The untreated wastewater from starch production can damage the balance of the aquatic ecosystems. This study enriched a mixed culture (EHN) with electrochemical activity and starch degradation capabilities. EHN exhibited growth across a pH range of 5.5–9.5, with electricity generation performance investigated at different pH levels. At pH 9.0, the maximum current density was 556.83 μA cm−2, 17.77 and 72.51 times higher than that at pH 7.2 and 5.5, respectively. The maximum power density and voltage at pH 9.0 were 1,499.93 mW m−2 and 631.00 mV, respectively, higher than those at pH 7.2. Bacillus was the dominant genus at pH 9.0. High-performance liquid chromatography (HPLC) revealed faster starch degradation and acetate production at pH 9.0, attributed to enhanced amylase activity, which indirectly boosted EHN’s electricity generation. This work highlights the potential of EHN in wastewater treatment and bioelectricity generation.http://www.sciencedirect.com/science/article/pii/S2589004225001294ElectrochemistryEnergy engineeringEnergy sustainability |
| spellingShingle | Sheng-chao Gao Hui-chun Jiang Zhen Zhang Xin-xin Fan Tian-peng Gao Ying Liu Electricity production performance and pH optimization of MFCs using enriched starch-degrading culture iScience Electrochemistry Energy engineering Energy sustainability |
| title | Electricity production performance and pH optimization of MFCs using enriched starch-degrading culture |
| title_full | Electricity production performance and pH optimization of MFCs using enriched starch-degrading culture |
| title_fullStr | Electricity production performance and pH optimization of MFCs using enriched starch-degrading culture |
| title_full_unstemmed | Electricity production performance and pH optimization of MFCs using enriched starch-degrading culture |
| title_short | Electricity production performance and pH optimization of MFCs using enriched starch-degrading culture |
| title_sort | electricity production performance and ph optimization of mfcs using enriched starch degrading culture |
| topic | Electrochemistry Energy engineering Energy sustainability |
| url | http://www.sciencedirect.com/science/article/pii/S2589004225001294 |
| work_keys_str_mv | AT shengchaogao electricityproductionperformanceandphoptimizationofmfcsusingenrichedstarchdegradingculture AT huichunjiang electricityproductionperformanceandphoptimizationofmfcsusingenrichedstarchdegradingculture AT zhenzhang electricityproductionperformanceandphoptimizationofmfcsusingenrichedstarchdegradingculture AT xinxinfan electricityproductionperformanceandphoptimizationofmfcsusingenrichedstarchdegradingculture AT tianpenggao electricityproductionperformanceandphoptimizationofmfcsusingenrichedstarchdegradingculture AT yingliu electricityproductionperformanceandphoptimizationofmfcsusingenrichedstarchdegradingculture |