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Combining Biochar, Zeolite and Wood Vinegar for Composting of Pig Manure: The Effect on Greenhouse Gas Emission and Nitrogen Conservation

Combining Biochar, Zeolite and Wood Vinegar for Composting of Pig Manure: The Effect on Greenhouse Gas Emission and Nitrogen Conservation

Quan Wang, Mukesh Kumar Awasthi, Xiuna Ren, Junchao Zhao, Ronghua Li, Zhen Wang, Meijing Wang, Hongyu Chen, Zengqiang Zhang

Waste Manag. 2018 Apr;74:221-230.

PMID: 29358021

Abstract:

The effect of enhancing wood vinegar (WV) with a mixture of biochar (B) and zeolite (Z) to compost pig manure (PM) in a 130 L reactor was evaluated to determine the levels of greenhouse gas (GHG) and ammonia emissions. Six treatments were prepared in a 2:1 ratio of PM mixed with wheat straw (WS; dry weight basis): PM + WS (control), PM + WS + 10%B, PM + WS + 10%B + 10%Z, and PM + WS with 0.5%, 1.0% and 2.0%WV combined with 10%B + 10%Z. These were composted for 50 days, and the results indicated that the combined use of B, Z, and WV could shorten the thermophilic phase and improve the maturity of compost compared to the control treatment. In addition, WV mixed with B and Z could reduce ammonia loss by 64.45-74.32% and decrease CO2, CH4, and N2O emissions by 33.90-46.98%, 50.39-61.15%, and 79.51-81.10%, respectively. Furthermore, compared to treatments in which B and B + Z were added, adding WV was more efficient to reduce the nitrogen and carbon loss, and the 10%B + 10%Z + 2%WV treatment presented the lowest loss of carbon (9.16%) and nitrogen (0.75%). Based on the maturity indexes used, nitrogen conservation, and efficiency of GHG emissions reduction, the treatment 10%B + 10%Z + 2%WV is suggested for efficient PM composting.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AS2121359	Gasoline Additives - WS			Price
IAR421100	Ammonia - WS			Price

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