Effects of different feedstocks-based biochar on soil remediation: A review

Ji, Mengyuan; Wang, Xiaoxia; Usman, Muhammad; Liu, Feihong; Dan, Yitong; Zhou, Lei; Campanaro, Stefano; Luo, Gang; Sang, Wenjing

doi:10.1016/j.envpol.2021.118655

Cited by 159 publications

(56 citation statements)

References 245 publications

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“…Biochar materials derived from various sources have exhibited diverse capabilities and effectiveness for soil contaminant stabilisation. Soil organic pollutant remediation is often accomplished by sorption and degradation mechanisms, whereas inorganic pollutant remediation is accomplished through sorption and chemical precipitation (Ji et al 2022 ). Biochar produced at a high temperature and with a high sorption capacity is more appropriate for the rapid fixation and adsorption of soil organic/inorganic contaminants.…”

Section: Environmental Remediationmentioning

confidence: 99%

“…In addition to sorption as a mechanism, biochar facilitates soil remediation via promoting enhanced microbial mineralization of organic contaminants (Guo et al 2020b ). Under natural conditions, microorganisms take a long time to degrade organic pollutants (Ji et al 2022 ). By incorporating biochar into the soil, the nutritional content is increased, which means that microbial activity enzymes (such as alkaline phosphatase, urease, and others) are increased (Pokharel et al 2020b ).…”

Section: Environmental Remediationmentioning

confidence: 99%

“…Another study conducted by He et al ( 2018b ) reported that the addition of pig manure biochar to low organic matter soil enhanced the biodegradation of phthalates by a greater percentage compared to bamboo wood biochar. Generally, biochar with higher organic carbon content and a larger surface area is preferable for facilitating the biodegradation of persistent organic pollutants and pesticide residues in soil (Ji et al 2022 ). Notably, biochar may contain active organic compounds, which are hazardous to soil microorganisms; also, the adsorption and hydrolysis of signalling molecules by biochar may alter the soil microbial community (Luo et al 2022 ).…”

Section: Environmental Remediationmentioning

confidence: 99%

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Biochar for agronomy, animal farming, anaerobic digestion, composting, water treatment, soil remediation, construction, energy storage, and carbon sequestration: a review

et al. 2022

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In the context of climate change and the circular economy, biochar has recently found many applications in various sectors as a versatile and recycled material. Here, we review application of biochar-based for carbon sink, covering agronomy, animal farming, anaerobic digestion, composting, environmental remediation, construction, and energy storage. The ultimate storage reservoirs for biochar are soils, civil infrastructure, and landfills. Biochar-based fertilisers, which combine traditional fertilisers with biochar as a nutrient carrier, are promising in agronomy. The use of biochar as a feed additive for animals shows benefits in terms of animal growth, gut microbiota, reduced enteric methane production, egg yield, and endo-toxicant mitigation. Biochar enhances anaerobic digestion operations, primarily for biogas generation and upgrading, performance and sustainability, and the mitigation of inhibitory impurities. In composts, biochar controls the release of greenhouse gases and enhances microbial activity. Co-composted biochar improves soil properties and enhances crop productivity. Pristine and engineered biochar can also be employed for water and soil remediation to remove pollutants. In construction, biochar can be added to cement or asphalt, thus conferring structural and functional advantages. Incorporating biochar in biocomposites improves insulation, electromagnetic radiation protection and moisture control. Finally, synthesising biochar-based materials for energy storage applications requires additional functionalisation.

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Section: Environmental Remediationmentioning

confidence: 99%

Section: Environmental Remediationmentioning

confidence: 99%

Section: Environmental Remediationmentioning

confidence: 99%

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Biochar for agronomy, animal farming, anaerobic digestion, composting, water treatment, soil remediation, construction, energy storage, and carbon sequestration: a review

et al. 2022

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“…Various soil improvement methods and processes were developed for efficient remediation of polluted soils and to minimize potential harmful impacts of such technologies. Biochars with diverse physicochemical characteristics offer an efficient remediation strategy in prevention of soil pollution (Figure 7) (Ji et al, 2022). Impact of biochars on soil pollution are largely dependent on biomass feedstocks and physicochemical properties of the biochar.…”

Section: Biochar Use In Soil Remediationmentioning

confidence: 99%

Potential Use of Biochar in Wastewater Treatment Operations and Soil Improvement

Gökalp¹,

Bulut²

2022

CTNS

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Biochar is produced through thermochemical decomposition, so called as pyrolysis, of different biomass groups in the presence of little or no oxygen. Resultant material is highly stable material with excellent surface characteristics and pore structure and is also rich in functional groups. Such properties of the material are largely influenced by pre- and post-treatments and thermal decomposition conditions. Various methods have been used for thermal decomposition of biomass, such as pyrolysis thermal carbonization, torrefaction and microwave heating at different temperatures and for different durations. Biochar has recently started to be used for wastewater treatment and water pollution control purposes. It is also used to improve soil properties including aggregate stability, water holding capacity and organic matter content. It is a new, economic and environment friendly material to be used in wastewater treatments technology and soil improvement. In this study, biochar production technologies and properties of resultant materials were summarized and potential use of biochar in wastewater treatments operations and for soil improvement were assessed in detail.

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“…Carbon sequestration [ 1 , 2 ], farmland fertility enhancement [ 3 ], and soil remediation have all received a lot of attention from the environmental and agricultural industries. Biochar is a black carbon-rich solid generated by the thermal decomposition of biomass under oxygen-limited circumstances at temperatures ranging from 300 to 700 °C [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Investigating Biochar-Derived Dissolved Organic Carbon (DOC) Components Extracted Using a Sequential Extraction Protocol

et al. 2022

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Biochar-derived dissolved organic carbon (DOC), as the most important component of biochar, can be released on farmland, improving fertility and playing a role in soil amendment and remediation. The complexity of molecular structures and diversity of DOC compounds have influenced these functions to some extent. A sequential extract protocol consisting of water (25 °C), hot water (80 °C), and NaOH solution (0.05 M) was used to fully extract DOC compounds and gain a thorough understanding of the possible DOC components released from biochar. Rape straw (RS), apple tree branches (ATB), and pine sawdust (PS) were pyrolyzed at 300, 500, and 700 °C, respectively, to make nine distinct biochars. A TOC analyser, ultraviolet-visible spectroscopy (UV–vis), and excitation–emission fluorescence (EEM) spectrophotometer were used in conjunction with parallel factor analysis (PARAFAC) to determine the distribution of DOC content, the diversity of aromaticity, molecular weight characteristics and components of biochar-derived DOC. The results show that the relative distribution of water-extractable fractions ranged from 3.21 to 35.57%, with a low-aromaticity and extremely hydrophilic fulvic-acid-like compounds being found in the highest amounts (C2 and C3). The smallest amount of hot water-extractable components was produced from the release of small-molecule aliphatic compounds adsorbed on biochar and susceptible to migration loss once in a soil solution. More than half of the biochar-derived DOC was released in a NaOH solution, which primarily consisted of humic-acid-like compounds (C1), with higher molecular weights, more aromaticity, and lower bioavailability, according to the distribution of DOC in various extractants. In addition, the pyrolysis temperature and biomass type had a significant impact on the DOC properties released by biochar. As a result, the findings of this study showed that using a sequential extract protocol of water, hot water, and NaOH solution in combination with spectroscopic methods could successfully reveal the diversity of biochar-derived components, which could lead to new insights for the accurate assessment of potential environmental impacts and new directions for biochar applications.

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Effects of different feedstocks-based biochar on soil remediation: A review

Cited by 159 publications

References 245 publications

Biochar for agronomy, animal farming, anaerobic digestion, composting, water treatment, soil remediation, construction, energy storage, and carbon sequestration: a review

Biochar for agronomy, animal farming, anaerobic digestion, composting, water treatment, soil remediation, construction, energy storage, and carbon sequestration: a review

Potential Use of Biochar in Wastewater Treatment Operations and Soil Improvement

Investigating Biochar-Derived Dissolved Organic Carbon (DOC) Components Extracted Using a Sequential Extraction Protocol

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