TY - JOUR
T1 - Biochar from pyrolyzed Tibetan Yak dung as a novel additive in ensiling sweet sorghum
T2 - An alternate to the hazardous use of Yak dung as a fuel in the home
AU - Bai, Yanfu
AU - Rafiq, Muhammad Khalid
AU - Li, Shanshan
AU - Degen, A. Allan
AU - Mašek, Ondřej
AU - Sun, Hongwen
AU - Han, Huawen
AU - Wang, Ting
AU - Joseph, Stephen
AU - Bachmann, Robert Thomas
AU - Sani, Rajesh K.
AU - Long, Ruijun
AU - Shang, Zhanhuan
N1 - Funding Information:
We are grateful to four reviewers for their helpful suggestions. This study was supported by the National key research and development project ( 2016YFC0501906 ), the National Natural Science Foundation of China ( 31961143012 ), The Fundamental Research Funds for the Central Universities (lzujbky- 2017-k16 ), The Second Tibetan Plateau Scientific Expedition and Research (STEP) Program ( 2019QZKK0302 ), Key R&D and Transformation Program of Qinghai ( 2017-NK-149-2 ), and Gansu Province Major Scientific and Technological Special Project ( 1502NKDA005-3 ).
Funding Information:
We are grateful to four reviewers for their helpful suggestions. This study was supported by the National key research and development project (2016YFC0501906), the National Natural Science Foundation of China (31961143012), The Fundamental Research Funds for the Central Universities (lzujbky-2017-k16), The Second Tibetan Plateau Scientific Expedition and Research (STEP) Program (2019QZKK0302), Key R&D and Transformation Program of Qinghai (2017-NK-149-2), and Gansu Province Major Scientific and Technological Special Project(1502NKDA005-3).
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2021/2/5
Y1 - 2021/2/5
N2 - Yak dung is used as fuel in Tibetan homes; however, this use is hazardous to health. An alternative use of the dung that would be profitable and offset the loss as a fuel would be very beneficial. Sweet sorghum silage with yak dung biochar as an additive was compared with a control silage with no additives and three silages with different commercial additives, namely Lactobacillus buchneri, Lactobacillus plantarum and Acremonium cellulase. Biochar-treated silage had a significantly greater concentration of water-soluble carbohydrates than the other silages (76 vs 12.4–45.8 g/kg DM) and a greater crude protein content (75.5 vs 61.4 g/kg DM), lactic acid concentration (40.7 vs 27.7 g/kg DM) and gross energy yield (17.8 vs 17.4 MJ/kg) than the control silage. Biochar-treated and control silages did not differ in in vitro digestibility and in total gas (507 vs 511 L/kg DM) and methane production (57.9 vs 57.1 L/kg DM). Biochar inhibited degradation of protein and water-soluble carbohydrates and enhanced lactic acid production, which improved storability of feed. It was concluded that yak dung biochar is an efficient, cost-effective ensiling additive. The profit could offset the loss of dung as fuel and improve the health of Tibetan people.
AB - Yak dung is used as fuel in Tibetan homes; however, this use is hazardous to health. An alternative use of the dung that would be profitable and offset the loss as a fuel would be very beneficial. Sweet sorghum silage with yak dung biochar as an additive was compared with a control silage with no additives and three silages with different commercial additives, namely Lactobacillus buchneri, Lactobacillus plantarum and Acremonium cellulase. Biochar-treated silage had a significantly greater concentration of water-soluble carbohydrates than the other silages (76 vs 12.4–45.8 g/kg DM) and a greater crude protein content (75.5 vs 61.4 g/kg DM), lactic acid concentration (40.7 vs 27.7 g/kg DM) and gross energy yield (17.8 vs 17.4 MJ/kg) than the control silage. Biochar-treated and control silages did not differ in in vitro digestibility and in total gas (507 vs 511 L/kg DM) and methane production (57.9 vs 57.1 L/kg DM). Biochar inhibited degradation of protein and water-soluble carbohydrates and enhanced lactic acid production, which improved storability of feed. It was concluded that yak dung biochar is an efficient, cost-effective ensiling additive. The profit could offset the loss of dung as fuel and improve the health of Tibetan people.
KW - In vitro fermentation
KW - Methane emission
KW - Silage agent
KW - Yak dung biochar
UR - http://www.scopus.com/inward/record.url?scp=85089839379&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2020.123647
DO - 10.1016/j.jhazmat.2020.123647
M3 - Article
C2 - 33264862
AN - SCOPUS:85089839379
SN - 0304-3894
VL - 403
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
M1 - 123647
ER -