Biochar composition-dependent impacts on soil nutrient release, carbon mineralization, and potential environmental risk: A review.

Autor: El-Naggar A; Korea Biochar Research Center, O-Jeong Eco-Resilience Institute (OJERI) & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea; Department of Soil Sciences, Faculty of Agriculture, Ain Shams University, Cairo, 11241, Egypt., El-Naggar AH; Department of Soil Sciences, Faculty of Agriculture, Ain Shams University, Cairo, 11241, Egypt; International Center for Biosaline Agriculture (ICBA), Dubai, 14660, United Arab Emirates., Shaheen SM; Department of Soil and Water Sciences, Faculty of Agriculture, University of Kafrelsheikh, Kafr El-Sheikh, 33516, Egypt; Laboratory of Soil- and Groundwater-Management, Institute of Foundation Engineering, Water- and Waste-Management, School of Architecture and Civil Engineering, University of Wuppertal, Wuppertal, 42285, Germany; King Abdulaziz University, Faculty of Meteorology, Environment, and Arid Land Agriculture, Department of Arid Land Agriculture, 21589 Jeddah, Saudi Arabia., Sarkar B; Department of Animal and Plant Sciences, The University of Sheffield, Sheffield, S10 2TN, UK; Future Industries Institute, University of South Australia, Mawson Lakes, SA 5095, Australia., Chang SX; Department of Renewable Resources, University of Alberta, Edmonton, Alberta, T6G 2H1, Canada., Tsang DCW; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China., Rinklebe J; Laboratory of Soil- and Groundwater-Management, Institute of Foundation Engineering, Water- and Waste-Management, School of Architecture and Civil Engineering, University of Wuppertal, Wuppertal, 42285, Germany; Department of Environment, Energy, and Geoinformatics, Sejong University, Seoul, 05006, Republic of Korea. Electronic address: rinklebe@uni-wuppertal.de., Ok YS; Korea Biochar Research Center, O-Jeong Eco-Resilience Institute (OJERI) & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea. Electronic address: yongsikok@korea.ac.kr.
Jazyk: angličtina
Zdroj: Journal of environmental management [J Environ Manage] 2019 Jul 01; Vol. 241, pp. 458-467. Date of Electronic Publication: 2019 Apr 24.
DOI: 10.1016/j.jenvman.2019.02.044
Abstrakt: Biochar application has multiple benefits for soil fertility improvement and climate change mitigation. Biochar can act as a source of nutrients and sequester carbon (C) in the soil. The nutrient release capacity of biochar once applied to the soil varies with the composition of the biochar, which is a function of the feedstock type and pyrolysis condition used for biochar production. Biochar has a crucial influence on soil C mineralization, including its positive or negative priming of microorganisms involved in soil C cycling. However, in various cases, biochar application to the soil may cause negative effects in the soil and the wider environment. For instance, biochar may suppress soil nutrient availability and crop productivity due to the reduction in plant nutrient uptake or reduction in soil C mineralization. Biochar application may also negatively affect environmental quality and human health because of harmful compounds such as polycyclic aromatic hydrocarbons (PAHs), polychlorinated dibenzodioxins, and dibenzofurans (PCDD/DF). In this review, we discuss the linkage between biochar composition and function, evaluate the role biochar plays in soil fertility improvement and C sequestration, and discuss regulations and concerns regarding biochar's negative environmental impact. We also summarize advancements in biochar production technologies and discuss future challenges and priorities in biochar research.
(Copyright © 2019 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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