|
| Effect of biochar pyrolyzed from wheat straws at different temperatures on biogas production characteristics of pig manure during mesophilic digestion |
| Received:December 24, 2015 |
| View Full Text View/Add Comment Download reader |
| KeyWord:wheat straw-derived biochar;pig manure;mesophilic anaerobic digestion;biogas production characteristics |
| Author Name | Affiliation | E-mail | | XU Cai-yun | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences Jiangsu Agricultural Waste Treatment and Recycle Engineering Research Center, Nanjing 210014, China
East China Scientific Observing and Experimental Station of Development and Utilization of Rural Renewable Energy, Ministry of Agriculture, Nanjing 210014, China
College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China | | | JIN Hong-mei | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences Jiangsu Agricultural Waste Treatment and Recycle Engineering Research Center, Nanjing 210014, China
East China Scientific Observing and Experimental Station of Development and Utilization of Rural Renewable Energy, Ministry of Agriculture, Nanjing 210014, China | jinhm1201@hotmail.com | | CHANG Zhi-zhou | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences Jiangsu Agricultural Waste Treatment and Recycle Engineering Research Center, Nanjing 210014, China
East China Scientific Observing and Experimental Station of Development and Utilization of Rural Renewable Energy, Ministry of Agriculture, Nanjing 210014, China | | | DU Jing | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences Jiangsu Agricultural Waste Treatment and Recycle Engineering Research Center, Nanjing 210014, China
East China Scientific Observing and Experimental Station of Development and Utilization of Rural Renewable Energy, Ministry of Agriculture, Nanjing 210014, China | | | HUANG Hong-ying | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences Jiangsu Agricultural Waste Treatment and Recycle Engineering Research Center, Nanjing 210014, China
East China Scientific Observing and Experimental Station of Development and Utilization of Rural Renewable Energy, Ministry of Agriculture, Nanjing 210014, China | | | AI Yu-chun | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences Jiangsu Agricultural Waste Treatment and Recycle Engineering Research Center, Nanjing 210014, China | | | ZHOU Li-xiang | College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China | |
|
| Hits: 3566 |
| Download times: 2974 |
| Abstract: |
| During anaerobic digestion(AD), microbial intermediate metabolites often inhabit biogas production. Biochars may adsorb these metabolites and improve biogas production when co-existing with manure during anaerobic digestion because of their large surface. In this study, the effects of different biochars on biogas production characteristics of pig manure during mesophilic digestion were examined. Biochars were obtained from wheat straws by pyrolysis at 400, 500 ℃ and 600 ℃(i.e., BC400, BC500 and BC600) and added to the AD reactor at mesophilic condition(37±1)℃. Biogas and methane productivity were measured in the bench-scale batch AD experiment. Results showed that the biogas and methane production was significantly(P < 0.05) enhanced by biochar addition, with an order of BC600>BC500>BC400. During 49 d AD, the biogas and methane production was 260.7~288.7 mL·g-1 VS and 163.7~185.5 mL·g-1 VS, for biochar additions, increments by 77.1%~96.1% and 78.1%~101.8%, respectively, compared with pig manure alone. Biochar additions also significantly enhanced the digestion efficiency(T90) of pig manure and reduced the ignition time of AD system. The biogas production was obviously different among different biochar treatments, which was ascribed to the different characteristics of biochars, such as surface area and porosity. These findings indicate that optimal biochar material and digestion condition should be considered during the operation of biogas plants. |
|
|
|
