Enhancing volatile fatty acids production from waste activated sludge by a novel cation-exchange resin assistant strategy
This study developed a novel strategy for enhancing volatile fatty acids production from waste activated sludge by cation-exchange resin assistant anaerobic fermentation. The process condition was optimized by response surface methodology. Considerable sludge disintegration degree (40.9%) and volati...
| Main Authors: | , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/161173 |
| _version_ | 1811678338889023488 |
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| author | Pang, Heliang He, Junguo Ma, Yingqun Pan, Xinlei Zheng, Yanshi Yu, Huarong Yan, Zhongsen Nan, Jun |
| author2 | Nanyang Environment and Water Research Institute |
| author_facet | Nanyang Environment and Water Research Institute Pang, Heliang He, Junguo Ma, Yingqun Pan, Xinlei Zheng, Yanshi Yu, Huarong Yan, Zhongsen Nan, Jun |
| author_sort | Pang, Heliang |
| collection | NTU |
| description | This study developed a novel strategy for enhancing volatile fatty acids production from waste activated sludge by cation-exchange resin assistant anaerobic fermentation. The process condition was optimized by response surface methodology. Considerable sludge disintegration degree (40.9%) and volatile fatty acids yield (4619.6 mg COD/L) were achievable at the proposed process conditions, i.e. cation-exchange resin dosage = 2.05 and 1.78 g/g SS, fermentation time = 4.97 and 6.46 d, and stirring strength = 246.9 and 261.2 rpm, respectively. Grey relational analysis revealed that cation-exchange resin dosage, fermentation time, and stirring strength presented similarly significant effects on sludge disintegration. The reusability tests showed that NaCl solution had the best effect on cation-exchange resin regeneration, and the performance of regenerated resin was comparable with the original resin on volatile fatty acids production. Compared with conventional pretreatment methods, the proposed cation-exchange resin assistant strategy revealed obvious advantages of saved pretreatment agents, easy operation, none chemical residual in sludge and small footprint. Total volatile fatty acids recovery can reach 1.46 × 108 tons chemical oxygen demand annually in terms of China's context, which could offset one third of carbon gap in China's wastewater treatment plants. The proposed cation-exchange resin assistant strategy indeed sheds lights on the direction for WAS treatment in a close alignment with process viability and engineering feasibility. |
| first_indexed | 2024-10-01T02:51:41Z |
| format | Journal Article |
| id | ntu-10356/161173 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:51:41Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1611732022-08-17T06:34:51Z Enhancing volatile fatty acids production from waste activated sludge by a novel cation-exchange resin assistant strategy Pang, Heliang He, Junguo Ma, Yingqun Pan, Xinlei Zheng, Yanshi Yu, Huarong Yan, Zhongsen Nan, Jun Nanyang Environment and Water Research Institute Advanced Environmental Biotechnology Centre (AEBC) Engineering::Environmental engineering Waste Activated Sludge Cation Exchange Resin This study developed a novel strategy for enhancing volatile fatty acids production from waste activated sludge by cation-exchange resin assistant anaerobic fermentation. The process condition was optimized by response surface methodology. Considerable sludge disintegration degree (40.9%) and volatile fatty acids yield (4619.6 mg COD/L) were achievable at the proposed process conditions, i.e. cation-exchange resin dosage = 2.05 and 1.78 g/g SS, fermentation time = 4.97 and 6.46 d, and stirring strength = 246.9 and 261.2 rpm, respectively. Grey relational analysis revealed that cation-exchange resin dosage, fermentation time, and stirring strength presented similarly significant effects on sludge disintegration. The reusability tests showed that NaCl solution had the best effect on cation-exchange resin regeneration, and the performance of regenerated resin was comparable with the original resin on volatile fatty acids production. Compared with conventional pretreatment methods, the proposed cation-exchange resin assistant strategy revealed obvious advantages of saved pretreatment agents, easy operation, none chemical residual in sludge and small footprint. Total volatile fatty acids recovery can reach 1.46 × 108 tons chemical oxygen demand annually in terms of China's context, which could offset one third of carbon gap in China's wastewater treatment plants. The proposed cation-exchange resin assistant strategy indeed sheds lights on the direction for WAS treatment in a close alignment with process viability and engineering feasibility. This work was supported by the National Natural Science Foundation of China e China (No.51778179) and Research and Development Program in Key Areas of Guangdong Province (2019B110209002). 2022-08-17T06:34:50Z 2022-08-17T06:34:50Z 2021 Journal Article Pang, H., He, J., Ma, Y., Pan, X., Zheng, Y., Yu, H., Yan, Z. & Nan, J. (2021). Enhancing volatile fatty acids production from waste activated sludge by a novel cation-exchange resin assistant strategy. Journal of Cleaner Production, 278, 123236-. https://dx.doi.org/10.1016/j.jclepro.2020.123236 0959-6526 https://hdl.handle.net/10356/161173 10.1016/j.jclepro.2020.123236 2-s2.0-85089565075 278 123236 en Journal of Cleaner Production © 2020 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Environmental engineering Waste Activated Sludge Cation Exchange Resin Pang, Heliang He, Junguo Ma, Yingqun Pan, Xinlei Zheng, Yanshi Yu, Huarong Yan, Zhongsen Nan, Jun Enhancing volatile fatty acids production from waste activated sludge by a novel cation-exchange resin assistant strategy |
| title | Enhancing volatile fatty acids production from waste activated sludge by a novel cation-exchange resin assistant strategy |
| title_full | Enhancing volatile fatty acids production from waste activated sludge by a novel cation-exchange resin assistant strategy |
| title_fullStr | Enhancing volatile fatty acids production from waste activated sludge by a novel cation-exchange resin assistant strategy |
| title_full_unstemmed | Enhancing volatile fatty acids production from waste activated sludge by a novel cation-exchange resin assistant strategy |
| title_short | Enhancing volatile fatty acids production from waste activated sludge by a novel cation-exchange resin assistant strategy |
| title_sort | enhancing volatile fatty acids production from waste activated sludge by a novel cation exchange resin assistant strategy |
| topic | Engineering::Environmental engineering Waste Activated Sludge Cation Exchange Resin |
| url | https://hdl.handle.net/10356/161173 |
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