Evaluation of orange peel waste and its biochar on greenhouse gas emissions and soil biochemical properties within a loess soil.

Autor: Sial TA; College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Department of Soil Science, Sindh Agriculture University, Tandojam, Pakistan., Lan Z; College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China., Khan MN; College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China., Zhao Y; College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; College of Resources and Environmental Engineering, Ludong University, Yantai 264025, China. Electronic address: yzhaosoils@gmail.com., Kumbhar F; Department of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China., Liu J; College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China., Zhang A; College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China., Hill RL; Department of Environmental Science and Technology, University of Maryland, College Park D 20742, USA., Lahori AH; College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China., Memon M; Department of Soil Science, Sindh Agriculture University, Tandojam, Pakistan.
Jazyk: angličtina
Zdroj: Waste management (New York, N.Y.) [Waste Manag] 2019 Mar 15; Vol. 87, pp. 125-134. Date of Electronic Publication: 2019 Feb 07.
DOI: 10.1016/j.wasman.2019.01.042
Abstrakt: The environmentally safe disposal of the large quantity of orange peels waste produced each day causes economic and environmental problems, which after conversion into biochar via pyrolysis technique might be used as an effective soil amendment. In this study, a 90-day incubation experiment was conducted to investigate the effects of orange peel waste and waste-derived biochar amendments on greenhouse gas emissions (GHG), soil biochemical properties, and soil enzyme activities. There were five treatments with different amendment levels: control without an amendment (Control), orange waste 1% (W1), orange waste 2% (W2), orange waste biochar 1% (B1), and orange waste biochar 2% (B2). The results showed that, compared with control, the amendments decreased cumulative N 2 O emissions by 59.2% (B2), 45.2% (B1), 20.6% (W2) and 10.2% (W1), respectively; and increased cumulative CH 4 emissions by 81.7% (W1), 84.4% (W2), 75.8% (B1) and 74.9% (B2), respectively. Cumulative CO 2 emissions decreased for the B1 (29.3%) and B2 (43.5%) over the waste treatments. While soil pH, SOC, nitrate nitrogen (NO 3 - -N) and enzyme activities (urease and catalase) were significantly increased with the passage of time from the biochar amendments, ammonium nitrogen (NH 4 + -N) and invertase activities did not show this trend with time. Our study suggests that orange peel waste conversion to biochar should be a viable alternate method of disposal since land application resulted in reduced GHG and improvements in soil fertility.
(Copyright © 2019 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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