Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 829, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2022.154326
Keywords
Pig bone-derived biochar; Anaerobic fermentation; Corn straw; Methane production
Categories
Funding
- National Natural Science Foundation of China [52176184]
- National Key Research and Development Program of China [2018YFE0206600]
- Young Key Teachers Training Program of Henan Higher Education Institutions [2018GGJS028]
- Science and Technology Project of Henan Province [212102310328, 212102110222]
- Key Scientific Research Projects of Henan Higher Education Institutions [21A416008]
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The effects of preparation conditions of pig bone-derived biochar additives on anaerobic fermentation were investigated. The optimized biochar showed improved performance in terms of methane production and pH buffering.
Different sources of biochar exhibit different effects on anaerobic fermentation. Here, the effects of activation temperature, activation time, impregnation ratio, and pickling times on the properties of pig bone-derived biochar additives were explored by orthogonal experiments. The pig bone-derived biochar with better performance was optimized to enhance the anaerobic fermentation. The results showed that when the preparation conditions of biochar were as follows: activation temperature of 700 degrees C, impregnation ratio of 2, activation time of 90 min, and pickling times of 2, the cumulative methane production of corn stalk by anaerobic fermentation exhibited the highest value of 164.54 mL/g VS, which was 68% higher than the control group. The correlation between the characteristics of biochar for promoting anaerobic fermentation and the performance of anaerobic fermentation was established. Interestingly, the pig bone-derived biochar can buffer pH value in straw anaerobic fermentation.
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