Extraction of volatile fatty acids from leachate via liquid-liquid extraction and adsorption method
Volatile fatty acids (VFAs) are used in wide range of commercially-important chemicals. Treatment of leachate at landfills by fermentation process will produce VFAs (butyric acid, acetic acid, propionic acid, isovaleric acid and isobutyric acid) can be considered as a replacement for petroleum-based...
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Penerbit UTHM
2018
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| Online Access: | http://eprints.uthm.edu.my/6021/ http://eprints.uthm.edu.my/6021/1/AJ%202018%20%28971%29%20Extraction%20of%20volatile%20fatty%20acids%20from%20leachate%20via%20liquid-liquid%20extraction%20and%20adsorption%20method.pdf |
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| author | Razali, Yasmin Syafikah Tajarudin, Husnul Azan Daud, Zawawi |
| author_facet | Razali, Yasmin Syafikah Tajarudin, Husnul Azan Daud, Zawawi |
| author_sort | Razali, Yasmin Syafikah |
| building | UTHM Institutional Repository |
| collection | Online Access |
| description | Volatile fatty acids (VFAs) are used in wide range of commercially-important chemicals. Treatment of leachate at landfills by fermentation process will produce VFAs (butyric acid, acetic acid, propionic acid, isovaleric acid and isobutyric acid) can be considered as a replacement for petroleum-based VFA due to their degradability, renewability and sustainability. Therefore, separation of VFAs residue after the leachate treatment is important and essential from the point of view of pollution control and recovery of useful material. The aim of this study is to compare the percentage of VFAs extracted between liquid-liquid extraction and adsorption method. The VFAs extracted in this study were acetic and butyric acids produced from the fermentation of leachate using Clostridium butyricum. Response surface methodology (RSM) was used using central composite design (CCD) to optimize the parameters that affect the extraction of acetic and butyric acids. Liquid-liquid extraction using petroleum ether (69/80) with optimum parameters (temperature: 35 oC, pH: 4.8, agitation: 175.4 rpm, incubation time: 16.8 h and volume of treated leachate: 14.1 %) showed that the acetic acid and butyric acid extracted were 28.1% and 88.8% respectively. On the other hand, adsorption method using activated carbon showed the highest extraction percentage of acetic acid, 87.4% and butyric acid 94.1% with the optimum parameters of pH 3.0, 19.8 % activated carbon weight, 40 oC, 9.5 h incubation time and 179.9 rpm agitation speed |
| first_indexed | 2025-11-15T20:14:20Z |
| format | Article |
| id | uthm-6021 |
| institution | Universiti Tun Hussein Onn Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T20:14:20Z |
| publishDate | 2018 |
| publisher | Penerbit UTHM |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | uthm-60212022-01-26T02:23:39Z http://eprints.uthm.edu.my/6021/ Extraction of volatile fatty acids from leachate via liquid-liquid extraction and adsorption method Razali, Yasmin Syafikah Tajarudin, Husnul Azan Daud, Zawawi TA170-171 Environmental engineering Volatile fatty acids (VFAs) are used in wide range of commercially-important chemicals. Treatment of leachate at landfills by fermentation process will produce VFAs (butyric acid, acetic acid, propionic acid, isovaleric acid and isobutyric acid) can be considered as a replacement for petroleum-based VFA due to their degradability, renewability and sustainability. Therefore, separation of VFAs residue after the leachate treatment is important and essential from the point of view of pollution control and recovery of useful material. The aim of this study is to compare the percentage of VFAs extracted between liquid-liquid extraction and adsorption method. The VFAs extracted in this study were acetic and butyric acids produced from the fermentation of leachate using Clostridium butyricum. Response surface methodology (RSM) was used using central composite design (CCD) to optimize the parameters that affect the extraction of acetic and butyric acids. Liquid-liquid extraction using petroleum ether (69/80) with optimum parameters (temperature: 35 oC, pH: 4.8, agitation: 175.4 rpm, incubation time: 16.8 h and volume of treated leachate: 14.1 %) showed that the acetic acid and butyric acid extracted were 28.1% and 88.8% respectively. On the other hand, adsorption method using activated carbon showed the highest extraction percentage of acetic acid, 87.4% and butyric acid 94.1% with the optimum parameters of pH 3.0, 19.8 % activated carbon weight, 40 oC, 9.5 h incubation time and 179.9 rpm agitation speed Penerbit UTHM 2018 Article PeerReviewed text en http://eprints.uthm.edu.my/6021/1/AJ%202018%20%28971%29%20Extraction%20of%20volatile%20fatty%20acids%20from%20leachate%20via%20liquid-liquid%20extraction%20and%20adsorption%20method.pdf Razali, Yasmin Syafikah and Tajarudin, Husnul Azan and Daud, Zawawi (2018) Extraction of volatile fatty acids from leachate via liquid-liquid extraction and adsorption method. International Journal of Integrated Engineering, 10 (9). pp. 79-84. ISSN 2229-838X |
| spellingShingle | TA170-171 Environmental engineering Razali, Yasmin Syafikah Tajarudin, Husnul Azan Daud, Zawawi Extraction of volatile fatty acids from leachate via liquid-liquid extraction and adsorption method |
| title | Extraction of volatile fatty acids from leachate via liquid-liquid extraction and adsorption method |
| title_full | Extraction of volatile fatty acids from leachate via liquid-liquid extraction and adsorption method |
| title_fullStr | Extraction of volatile fatty acids from leachate via liquid-liquid extraction and adsorption method |
| title_full_unstemmed | Extraction of volatile fatty acids from leachate via liquid-liquid extraction and adsorption method |
| title_short | Extraction of volatile fatty acids from leachate via liquid-liquid extraction and adsorption method |
| title_sort | extraction of volatile fatty acids from leachate via liquid-liquid extraction and adsorption method |
| topic | TA170-171 Environmental engineering |
| url | http://eprints.uthm.edu.my/6021/ http://eprints.uthm.edu.my/6021/1/AJ%202018%20%28971%29%20Extraction%20of%20volatile%20fatty%20acids%20from%20leachate%20via%20liquid-liquid%20extraction%20and%20adsorption%20method.pdf |