Performance and mechanism for cadmium and lead adsorption from water and soil by corn straw biochar

Chi, Tong; Zuo, Jiane; Liu, Fenglin

doi:10.1007/s11783-017-0921-y

Cited by 149 publications

(37 citation statements)

References 31 publications

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“…Heavy metal is an important class of environmental pollutants that may originate from various anthropogenic sources and are widely distributed (Hou et al 2016(Hou et al , 2017cMa et al 2015Ma et al , 2014. A range of laboratory studies have revealed the adsorption characteristics of heavy metals on biochars produced from a particular plant biomass (e.g., Park et al 2015;Shen et al 2015;Chi et al 2017). However, the biochar production parameters, including highest heating temperature, heating rate, residence time, protection gas and quality control, vary widely among these studies.…”

Section: Introductionmentioning

confidence: 99%

Comparison of nickel adsorption on biochars produced from mixed softwood and Miscanthus straw

Shen

Zhang

Jin

et al. 2018

Environ Sci Pollut Res

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In order to understand the influence of feedstock type on biochar adsorption of heavy metals, the adsorption characteristics of nickel (Ni), copper (Cu) and lead (Pb) onto biochars derived from mixed softwood and Miscanthus straw were compared. The biochars were produced from mixed softwood pellets (SWP) and Miscanthus straw pellets (MSP), at both 550 and 700 °C for each material, using a standardised production procedure recommended by the UK Biochar Research Centre. Kinetics analyses show that the adsorption of Ni to all four biochars reached equilibrium within 5 min. The degree of Ni removal for all four biochars remained nearly constant within initial pH values of 3-8, because the equilibrium pH values within this range were similar due to the buffering effect of the biochars. A sharp increase of Ni removal percentage for all biochars at initial solution pH 8-10 was observed as the equilibrium pH also increased. MSP derived biochars generally had higher maximum adsorption capacities (Q) for the three tested metals as compared with those from SWP, which was likely due to their higher degree of carbonisation during production. This study shows that feedstock type is a primary factor affecting the adsorption capacities of the tested biochars for heavy metals.

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Section: Introductionmentioning

confidence: 99%

Comparison of nickel adsorption on biochars produced from mixed softwood and Miscanthus straw

Shen

Zhang

Jin

et al. 2018

Environ Sci Pollut Res

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“…Moreover, to achieve sustainable remediation of contaminated agricultural land, it is imperative to prevent further contamination by using cleaner production approaches and to avoid irrigation with contaminated wastewater by farmers. It is also important to involve farmers in the decontamination process as they are the most familiar with land characteristics, especially when such remedies involve planting (Chi, Zuo, & Liu, ; Lin et al, ) and the use of biological waste (Batista, Gonzalez‐Fernandez, Abreu, Queralt, & Carvalho, ; Glenn, Jordan, & Waugh, ). In China, it is often the case that most contaminated agricultural sites are due to large‐scale practices, such as farmland irrigation with contaminated wastewater or surface runoff from mining sites, which can affect hundreds or thousands of hectares.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Farmers' perceptions and adaptation behaviours concerning land degradation: A theoretical framework and a case‐study in the Qinghai–Tibetan Plateau of China

Huisingh

Ying

et al. 2018

Land Degrad Dev

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Land degradation through environmental pollution represents a serious threat to vulnerable populations in rural China. To better understand farmers' perceptions of land degradation and their corresponding adaptation behaviour, this paper presents a theoretical framework to explain the interactions among awareness, perception, mitigation, and adaptation, and tests the framework using a case‐study. A case‐study was conducted in Qinghai, where historical environmental pollution from a chemical plant had caused the contamination of soil, groundwater, and river water, which had negatively impacted the livelihood of local farmers. A questionnaire survey was conducted (n = 277), and the results were used to test the theoretical framework using structural equation modelling. Results indicated strong structural relationships between awareness and perceptions (r = .75, p < .01), a relatively strong relationship between mitigation and adaptation (r = .63, p = .02), and a weak relationship between perception and mitigation (r = .20, p = .54). The study results suggested that farmers were well aware of land degradation issues, but they lacked in‐depth knowledge about the situation and about sophisticated adaptation methods; therefore, they had chosen the easiest adaptation strategy‐ to avoid the degraded land. The farmers were less willing to bear significant financial costs in adaptation; however, the proportion of respondents adopting ‘moving’ as an adaptation strategy was relatively high, suggesting that farmland degradation in combination with employment opportunities in urban areas may be causing environmental displacement and accelerating urbanization. The authors of this paper recommend that policymakers should consider more than just technical factors in addressing China's environmental pollution and land degradation problems. The socio‐economic status of farmers should be a critical component in the equation, and bottom‐up empowerment adaptation behaviour should be used in combination with top‐down mitigation.

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“…Biochar exhibits good characteristics as sorbent/amendment for heavy metals in contaminated soil due to its properties such as porous structures, large surface areas, and the existence of functional groups (Chi et al 2017;Feng and Zhu 2018). As shown in Fig.…”

Section: Potential Mechanism Of Heavy Metal Remediation By Biocharmentioning

confidence: 99%

Thallium contamination in agricultural soils and associated potential remediation via biochar utilization

Luo

Kayiranga

Uwiringiyimana

et al. 2020

Biochar

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Thallium (Tl) is an extremely harmful metal that is substantially distributed in the environment. It can threaten human health via consumption of food potentially derived from Tl-contaminated agricultural production. Little information is available on how to utilize biochar to remediate Tl contamination in agricultural soils. More efforts are urgently needed to be devoted to developing effective techniques to empower biochar with high selectivity of Tl in agricultural soils. In this review, we provided comprehensive information on Tl contamination in agricultural soils. We also discussed recent developments and assessed the current status of biochar applications. We briefly reviewed the bridge between biochar preparation technology and utilization wherein further developments can exhibit potential in terms of Tl remediation. Hence, biochar is expected to exhibit excellent Tl remediation performance in contaminated agricultural soils with promising application prospects. The obtained knowledge provides further insights into the remediation of Tl contamination in agricultural soils.

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Performance and mechanism for cadmium and lead adsorption from water and soil by corn straw biochar

Cited by 149 publications

References 31 publications

Comparison of nickel adsorption on biochars produced from mixed softwood and Miscanthus straw

Comparison of nickel adsorption on biochars produced from mixed softwood and Miscanthus straw

Farmers' perceptions and adaptation behaviours concerning land degradation: A theoretical framework and a case‐study in the Qinghai–Tibetan Plateau of China

Thallium contamination in agricultural soils and associated potential remediation via biochar utilization

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