Biochar for environmental management: Mitigating greenhouse gas emissions, contaminant treatment, and potential negative impacts

Zhang, Chen; Zeng, Guangming; Huang, Danlian; Lai, Cui; Chen, Ming; Cheng, Min; Tang, Lin; Dong, Haoran; Huang, Binbin; Tan, Xiaofei; Wang, Rongzhong

doi:10.1016/j.cej.2019.05.139

Cited by 294 publications

(99 citation statements)

References 249 publications

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“…Many studies demonstrated that the emissions of GHGs (e.g., CO 2 , CH 4 , and N 2 O) could be significantly reduced with the applications of biochar [22,62]. For example, Wu et al, 2018 reported that the N 2 O emission was decreased by 26.9% in acidic sandy soil amended by corn biochar and by 68.4% when olive biochar was applied [133].…”

Section: Greenhouse Gas Emission Mitigationmentioning

confidence: 99%

“…The applications of biochar as a soil amendment in agricultural fields have been widely investigated and reviewed over the last decade [19]. Popular topics include biochar's physicochemical characteristics [20], sorption for different soil contaminants [21], influences on soil productivity [19], effects on soil GHG emissions [22], and interaction with soil microorganisms [17]. Yet insufficient attention has been paid to the effectiveness of biochar-based technology in treating diffuse sources of wastewater, especially in the agriculture sector.…”

Section: Introductionmentioning

confidence: 99%

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Engineered Biochar Production and Its Potential Benefits in a Closed-Loop Water-Reuse Agriculture System

Chan

Sharbatmaleki

et al. 2020

Water

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Biochar’s potential to remove various contaminants from aqueous solutions has been widely discussed. The rapid development of engineered biochar produced using different feedstock materials via various methods for wastewater treatment in recent years urges an up-to-date review on this topic. This article centers on summarizing state-of-the-art methods for engineered biochar production and discussing the multidimensional benefits of applying biochar for water reuse and soil amendment in a closed-loop agriculture system. Based on numerous recent articles (<5 years) published in journals indexed in the Web of Science, engineered biochar’s production methods, modification techniques, physicochemical properties, and performance in removing inorganic, organic, and emerging contaminants from wastewater are reviewed in this study. It is concluded that biochar-based technologies have great potential to be used for treating both point-source and diffuse-source wastewater in agricultural systems, thus decreasing water demand while improving crop yields. As biochar can be produced using crop residues and other biomass wastes, its on-farm production and subsequent applications in a closed-loop agriculture system will not only eliminate expensive transportation costs, but also create a circular flow of materials and energy that promotes additional environmental and economic benefits.

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Section: Greenhouse Gas Emission Mitigationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Engineered Biochar Production and Its Potential Benefits in a Closed-Loop Water-Reuse Agriculture System

Chan

Sharbatmaleki

et al. 2020

Water

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“…All of the above factors have aggravated carbon dioxide emissions, thereby increasing the urgency of counteracting the greenhouse effect and its associated global warming. The Kyoto Protocol and the Paris Agreement aim to control greenhouse gas emissions under the United Nations Framework Convention on Climate Change (UNFCCC), in which CO 2 is listed as a major greenhouse gas that needs to be mitigated or recycled [2]. The greenhouse gases include more than CO 2 , however; in fact, the global warming potentials of CH 4 and N 2 O are 25 times and 298 times that of CO 2 , respectively.…”

Section: Introductionmentioning

confidence: 99%

Large-Scale Screening and Machine Learning to Predict the Computation-Ready, Experimental Metal-Organic Frameworks for CO2 Capture from Air

Deng

Yang

et al. 2020

Applied Sciences

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The rising level of CO2 in the atmosphere has attracted attention in recent years. The technique of capturing CO2 from higher CO2 concentrations, such as power plants, has been widely studied, but capturing lower concentrations of CO2 directly from the air remains a challenge. This study uses high-throughput computer (Monte Carlo and molecular dynamics simulation) and machine learning (ML) to study 6013 computation-ready, experimental metal-organic frameworks (CoRE-MOFs) for CO2 adsorption and diffusion properties in the air with very low concentrations of CO2. First, the law influencing CO2 adsorption and diffusion in air is obtained as a structure-performance relationship, and then the law influencing the performance of CO2 adsorption and diffusion in air is further explored by four ML algorithms. Random forest (RF) was considered the optimal algorithm for prediction of CO2 selectivity, with an R value of 0.981, and this algorithm was further applied to analyze the relative importance of each metal-organic framework (MOF) descriptor quantitatively. Finally, 14 MOFs with the best properties were successfully screened out, and it was found that a key to capturing a low concentration CO2 from the air was the diffusion performance of CO2 in MOFs. When the pore-limiting diameter (PLD) of a MOF was closer to the CO2 dynamic diameter, this MOF could possess higher CO2 diffusion separation selectivity. This study could provide valuable guidance for the synthesis of new MOFs in experiments that capture directly low concentration CO2 from the air.

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“…20 Biochar materials have recently attracted extensive attentions from researchers worldwide because of their simple preparation methods, wide source of raw materials, and excellent adsorption capacity for both organic and inorganic contaminants. [20][21][22][23] The adsorption properties of biochar materials are affected by many factors, including different preparation conditions and different sources of raw materials. These factors cause signicant differences in biochar characteristics, including specic surface area, pore structure, and surface hydrophobicity, impacting adsorption performances.…”

Section: Introductionmentioning

confidence: 99%

Highly enhanced adsorption performance of tetracycline antibiotics on KOH-activated biochar derived from reed plants

Zhao

et al. 2020

RSC Adv.

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Biochar for environmental management: Mitigating greenhouse gas emissions, contaminant treatment, and potential negative impacts

Cited by 294 publications

References 249 publications

Engineered Biochar Production and Its Potential Benefits in a Closed-Loop Water-Reuse Agriculture System

Engineered Biochar Production and Its Potential Benefits in a Closed-Loop Water-Reuse Agriculture System

Large-Scale Screening and Machine Learning to Predict the Computation-Ready, Experimental Metal-Organic Frameworks for CO2 Capture from Air

Highly enhanced adsorption performance of tetracycline antibiotics on KOH-activated biochar derived from reed plants

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