The Korean text of this paper can be translated into multiple languages on the website of http://jksee.or.kr through Google Translator.
| 2상 혐기성 소화에서 음식물쓰레기의 고온 가용화 전처리 pH 영향 |
| 이원수1, 강영준2, 서규태1 |
1창원대학교 환경공학과
2창원대학교 해양플랜트 FEED 공학과 |
| pH Effect at Thermophilic Solubilization Pretreatment of Food Waste in Two Phase Anaerobic Digestion |
| Won-Soo Lee1, Young-Jun Kang2, Gyu-Tae Seo1 |
1Department of Environment Engineering, Changwon University
2Department of Eco-friendly Offshore FEED Engineering, Changwon University |
| Corresponding author |
Gyu-Tae Seo ,Tel: 055-213-3746, Fax: 055-281-3011, Email: gts@changwon.ac.kr
|
|
|
Received: June 17, 2016; Revised: July 7, 2016; Accepted: July 29, 2016. Published online: August 31, 2016. |
|
|
| ABSTRACT |
|
The study on pH control at the themophilic solubilization (pretreatment process) was investigated in order to improve the methane gas production of two phase anaerobic digestion of food waste. From a batch experiment, it was observed that the solubilization efficiency was increased from 26.2% to 47.1% and 55.6% by the pH increament from 4.20 ± 0.40 (without pH control) to 7.00 ± 0.50, and 12.00 ± 0.50, respectively. However there was immaterial increase (8.5%) in solubilization efficiency when the pH was increased from 7.00 ± 0.50 to 12.00 ± 0.50. The two phase anaerobic digestion system was operated for laboratory scale experiment under the solubilization condition of pH 4.20 ± 0.40 (Run1) and 7.00 ± 0.50 (Run2). Higher soluble chemical oxygen demand (SCOD) and total volatile fatty acid (TVFA) concentration were observed in Run2 throughout the system resulted by the solubilization effect at the pH 7.00 ± 0.50. The TVFA concentration in acidogenic reactor was 18.4 g/L which was 1.8 times higher than the result of Run1. Consequently the methane gas production was enhanced to 0.333 L/g VS in the methanogenic reactor, which is 18% higher than the result (0.282 L/g VS) of Run1. |
| Key Words:
Thermophilic Solubilization, Methane Gas, Food Waste, Two Phase Anaerobic Digestion, pH Adjustment, Volatile Fatty Acid |
|
PDF Links
Full text via DOI
Download Citation 
