Alkali and alkaline earth metallic (AAEM) species leaching and Cu(II) sorption by biochar

Li, Mi; Lou, Zhenjun; Wang, Yang; Liu, Qiang; Zhang, Yaping; Zhou, Jizhi; Qian, Guangren

doi:10.1016/j.chemosphere.2014.08.033

Cited by 59 publications

(12 citation statements)

References 35 publications

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“…The sorption of Cu and Zn onto biochars was found to generally increase with increasing biochar pyrolysis temperature (Fig. 2 ) in agreement with Li et al ( 2015 ) and Melo et al ( 2013 ). The FTIR spectra revealed a general decrease in the abundance of functional groups on the surface of the biochar as the pyrolysis temperature increased (Fig.…”

Section: Resultssupporting

confidence: 90%

Predicting Cu and Zn sorption capacity of biochar from feedstock C/N ratio and pyrolysis temperature

Rodríguez-Vila

Selwyn-Smith

Enunwa

et al. 2017

Environ Sci Pollut Res

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Biochars have been proposed for remediation of metal-contaminated water due to their low cost, high surface area and high sorption capacity for metals. However, there is a lack of understanding over how feedstock material and pyrolysis conditions contribute to the metal sorption capacity of biochar. We produced biochars from 10 different organic materials by pyrolysing at 450 °C and a further 10 biochars from cedar wood by pyrolysing at 50 °C intervals (250–700 °C). Batch sorption experiments were conducted to derive the maximum Cu and Zn sorption capacity of each biochar. The results revealed an exponential relationship between Cu and Zn sorption capacity and the feedstock C/N ratio and a sigmoidal relationship between the pyrolysis temperature and the maximum Cu and Zn sorption capacity. FTIR analysis revealed that as temperature increased, the abundance of functional groups reduced. We conclude that the high sorption capacity of high temperature biochars is due to an electrostatic attraction between positively charged Cu and Zn ions and delocalised pi-electrons on the greater surface area of these biochars. These findings demonstrate a method for predicting the maximum sorption capacity of a biochar based on the feedstock C/N ratio and the pyrolysis temperature.Electronic supplementary materialThe online version of this article (10.1007/s11356-017-1047-2) contains supplementary material, which is available to authorized users.

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Section: Resultssupporting

confidence: 90%

Predicting Cu and Zn sorption capacity of biochar from feedstock C/N ratio and pyrolysis temperature

Rodríguez-Vila

Selwyn-Smith

Enunwa

et al. 2017

Environ Sci Pollut Res

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“…The large surface area and negative charges of BC immobilize nitrogen (N) and reduce N pollution (Dong et al, 2015). Other important aspects that make BC a promising candidate for environmentally friendly agriculture are its ability to inhibit methane emission (Gwenzi et al, 2015), remediate heavy metal-contaminated soil, neutralize soil toxic compounds, and increase beneficial microbial activities Li et al, 2015). BC has also been found to reduce the incidence of crop disease and mitigate biotic stress (de Corato et al, 2015;Gwenzi et al, 2015;Haider et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…BC has been used to improve agricultural productivity in traditional systems, with examples of its use being traced in the terra preta of the Amazon Basin (Lehmann, 2007). BC is the product of the slow pyrolysis of biomass, and its properties vary depending on certain factors such as feedstock type, time, and temperature conditions during preparation (de Corato et al, 2015;Gwenzi et al, 2015;Li et al, 2015). However, incorporating BC into soil proved to operate as a conditioner, by improving soil fertility through increasing soil organic C levels and nutrient availability (releasing its own nutrients and cycling existing nutrients in the soil and preventing their leaching), transforming phosphorus (P), enhancing soil field capacity, and decreasing bulk density (Ahmed and Schoenau, 2015;Bayabil et al, 2015;Dong et al, 2015;Gwenzi et al, 2015;Zhang et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Additive effects due to biochar and endophyte application enable soybean to enhance nutrient uptake and modulate nutritional parameters

Waqas

Kim

Khan

et al. 2017

J. Zhejiang Univ. Sci. B

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Abstract:We studied the effects of hardwood-derived biochar (BC) and the phytohormone-producing endophyte Galactomyces geotrichum WLL1 in soybean (Glycine max (L.) Merr.) with respect to basic, macro-and micronutrient uptakes and assimilations, and their subsequent effects on the regulation of functional amino acids, isoflavones, fatty acid composition, total sugar contents, total phenolic contents, and 1,1-diphenyl-2-picrylhydrazyl (DPPH)-scavenging activity. The assimilation of basic nutrients such as nitrogen was up-regulated, leaving carbon, oxygen, and hydrogen unaffected in BC+G. geotrichum-treated soybean plants. In comparison, the uptakes of macro-and micronutrients fluctuated in the individual or co-application of BC and G. geotrichum in soybean plant organs and rhizospheric substrate. Moreover, the same attribute was recorded for the regulation of functional amino acids, isoflavones, fatty acid composition, total sugar contents, total phenolic contents, and DPPH-scavenging activity. Collectively, these results showed that BC+G. geotrichum-treated soybean yielded better results than did the plants treated with individual applications. It was concluded that BC is an additional nutriment source and that the G. geotrichum acts as a plant biostimulating source and the effects of both are additive towards plant growth promotion. Strategies involving the incorporation of BC and endophytic symbiosis may help achieve eco-friendly agricultural production, thus reducing the excessive use of chemical agents.

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“…Similarly, Wei et al (2019) also reported that low pyrolysis temperature (350 °C) attributed a better sorption performance to Jerusalem artichoke stalks derived biochars (17.0 mg g −1 ), in comparison to other tested pyrolysis temperatures (15.2 mg g −1 for 700 °C, and 11.1 mg g −1 for 500 °C, respectively) [ 160 ]. However, contradictory results have also been reported in literature, indicating that the nature of the biomass feedstock plays a crucial role [ 161 ].…”

Section: Effect Of Biochar On Specific Potentially Toxic Elements Mobility and Bioavailabilitymentioning

confidence: 99%

Towards a Soil Remediation Strategy Using Biochar: Effects on Soil Chemical Properties and Bioavailability of Potentially Toxic Elements

Bilias

Nikoli

Kalderis

et al. 2021

Toxics

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Soil contamination with potentially toxic elements (PTEs) is considered one of the most severe environmental threats, while among remediation strategies, research on the application of soil amendments has received important consideration. This review highlights the effects of biochar application on soil properties and the bioavailability of potentially toxic elements describing research areas of intense current and emerging activity. Using a visual scientometric analysis, our study shows that between 2019 and 2020, research sub-fields like earthworm activities and responses, greenhouse gass emissions, and low molecular weight organic acids have gained most of the attention when biochar was investigated for soil remediation purposes. Moreover, biomasses like rice straw, sewage sludge, and sawdust were found to be the most commonly used feedstocks for biochar production. The effect of biochar on soil chemistry and different mechanisms responsible for PTEs’ immobilization with biochar, are also briefly reported. Special attention is also given to specific PTEs most commonly found at contaminated soils, including Cu, Zn, Ni, Cr, Pb, Cd, and As, and therefore are more extensively revised in this paper. This review also addresses some of the issues in developing innovative methodologies for engineered biochars, introduced alongside some suggestions which intend to form a more focused soil remediation strategy.

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Alkali and alkaline earth metallic (AAEM) species leaching and Cu(II) sorption by biochar

Cited by 59 publications

References 35 publications

Predicting Cu and Zn sorption capacity of biochar from feedstock C/N ratio and pyrolysis temperature

Predicting Cu and Zn sorption capacity of biochar from feedstock C/N ratio and pyrolysis temperature

Additive effects due to biochar and endophyte application enable soybean to enhance nutrient uptake and modulate nutritional parameters

Towards a Soil Remediation Strategy Using Biochar: Effects on Soil Chemical Properties and Bioavailability of Potentially Toxic Elements

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