Impact of Alkaline Pretreatment to Enhance Volatile Fatty Acids (VFAs) Production from Rice Husk
This study explores the use of alkaline pretreatments to improve the hydrolyzation of rice husks to produce volatile fatty acids (VFAs). The study investigated the effects of reagent concentration and pretreatment time on protein, carbohydrates, and dissolved chemical oxygen demand (SCOD) dissolutio...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Biochemistry Research International |
| Online Access: | http://dx.doi.org/10.1155/2019/8489747 |
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| author | Qian Fang Sinmin Ji Dingwu Huang Zhouyue Huang Zilong Huang Yunyi Zeng Yu Liu |
| author_facet | Qian Fang Sinmin Ji Dingwu Huang Zhouyue Huang Zilong Huang Yunyi Zeng Yu Liu |
| author_sort | Qian Fang |
| collection | DOAJ |
| description | This study explores the use of alkaline pretreatments to improve the hydrolyzation of rice husks to produce volatile fatty acids (VFAs). The study investigated the effects of reagent concentration and pretreatment time on protein, carbohydrates, and dissolved chemical oxygen demand (SCOD) dissolution after the pretreatment. The optimum alkaline pretreatment conditions were 0.30 g NaOH (g VS)−1, with a reaction time of 48 h. The experimental results show that when comparing the total VFA (TVFA) yields from the alkaline-pretreated risk husk with those from the untreated rice husk, over 14 d and 2 d, the maximum value reached 1237.7 and 716.0 mg·L−1 with acetic acid and propionic acid and with acetic acid and butyric acid, respectively. After the alkaline pretreatment, TVFAs increased by 72.9%; VFA accumulation grew over time. The study found that alkaline pretreatment can improve VFA yields from rice husks and transform butyric acid fermentation into propionic acid fermentation. The study results can provide guidelines to support the comprehensive utilization of rice husk and waste treatment. |
| format | Article |
| id | doaj-art-431e770fafaf44fba89d671398cbaef6 |
| institution | Kabale University |
| issn | 2090-2247 2090-2255 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Biochemistry Research International |
| spelling | doaj-art-431e770fafaf44fba89d671398cbaef62025-02-03T06:01:45ZengWileyBiochemistry Research International2090-22472090-22552019-01-01201910.1155/2019/84897478489747Impact of Alkaline Pretreatment to Enhance Volatile Fatty Acids (VFAs) Production from Rice HuskQian Fang0Sinmin Ji1Dingwu Huang2Zhouyue Huang3Zilong Huang4Yunyi Zeng5Yu Liu6Department of Municipal Engineering, College of Civil Engineering, Guangzhou University, Guangzhou 510006, ChinaDepartment of Municipal Engineering, College of Civil Engineering, Guangzhou University, Guangzhou 510006, ChinaDepartment of Municipal Engineering, College of Civil Engineering, Guangzhou University, Guangzhou 510006, ChinaDepartment of Municipal Engineering, College of Civil Engineering, Guangzhou University, Guangzhou 510006, ChinaDepartment of Municipal Engineering, College of Civil Engineering, Guangzhou University, Guangzhou 510006, ChinaDepartment of Municipal Engineering, College of Civil Engineering, Guangzhou University, Guangzhou 510006, ChinaDepartment of Municipal Engineering, College of Civil Engineering, Guangzhou University, Guangzhou 510006, ChinaThis study explores the use of alkaline pretreatments to improve the hydrolyzation of rice husks to produce volatile fatty acids (VFAs). The study investigated the effects of reagent concentration and pretreatment time on protein, carbohydrates, and dissolved chemical oxygen demand (SCOD) dissolution after the pretreatment. The optimum alkaline pretreatment conditions were 0.30 g NaOH (g VS)−1, with a reaction time of 48 h. The experimental results show that when comparing the total VFA (TVFA) yields from the alkaline-pretreated risk husk with those from the untreated rice husk, over 14 d and 2 d, the maximum value reached 1237.7 and 716.0 mg·L−1 with acetic acid and propionic acid and with acetic acid and butyric acid, respectively. After the alkaline pretreatment, TVFAs increased by 72.9%; VFA accumulation grew over time. The study found that alkaline pretreatment can improve VFA yields from rice husks and transform butyric acid fermentation into propionic acid fermentation. The study results can provide guidelines to support the comprehensive utilization of rice husk and waste treatment.http://dx.doi.org/10.1155/2019/8489747 |
| spellingShingle | Qian Fang Sinmin Ji Dingwu Huang Zhouyue Huang Zilong Huang Yunyi Zeng Yu Liu Impact of Alkaline Pretreatment to Enhance Volatile Fatty Acids (VFAs) Production from Rice Husk Biochemistry Research International |
| title | Impact of Alkaline Pretreatment to Enhance Volatile Fatty Acids (VFAs) Production from Rice Husk |
| title_full | Impact of Alkaline Pretreatment to Enhance Volatile Fatty Acids (VFAs) Production from Rice Husk |
| title_fullStr | Impact of Alkaline Pretreatment to Enhance Volatile Fatty Acids (VFAs) Production from Rice Husk |
| title_full_unstemmed | Impact of Alkaline Pretreatment to Enhance Volatile Fatty Acids (VFAs) Production from Rice Husk |
| title_short | Impact of Alkaline Pretreatment to Enhance Volatile Fatty Acids (VFAs) Production from Rice Husk |
| title_sort | impact of alkaline pretreatment to enhance volatile fatty acids vfas production from rice husk |
| url | http://dx.doi.org/10.1155/2019/8489747 |
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