Efficient removal of Cd(II) from aqueous solution by pinecone biochar: Sorption performance and governing mechanisms

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dc.contributor.authorTeng, Dongye
dc.contributor.authorZhang, Bingbing
dc.contributor.authorXu, Guomin
dc.contributor.authorWang, Bing
dc.contributor.authorMao, Kang
dc.contributor.authorWang, Jianxu
dc.contributor.authorSun, Jing
dc.contributor.authorFeng, Xinbin
dc.contributor.authorYang, Zhugen
dc.contributor.authorZhang, Hua
dc.date.accessioned2021-02-15T15:32:06Z
dc.date.available2021-02-15T15:32:06Z
dc.date.issued2020-06-12
dc.description.abstractCadmium (Cd) is one of the most harmful and widespread environmental pollutants. Despite decades-long research efforts, the remediation of water contaminated by Cd has remained a significant challenge. A novel carbon material, pinecone biochar, was previously hypothesized to be a promising adsorbent for Cd, while so far, it has received little attention. This study evaluated the sorption capacity of pinecone biochar through isotherm experiments. Based on Langmuir model, the adsorption maximum for Cd(II) was up to 92.7 mg g−1. The mechanism of Cd(II) adsorption on pinecone biochar was also explored through both thermodynamic and kinetics adsorption experiments, as well as both solution and solid-phase microstructure characterization. The solid-solution partitioning behaviour of Cd(II) fitted best with the Tόth model while the adsorption process followed a pseudo-second-order rate, suggesting that the Cd(II) adsorption on the pinecone biochar was mainly a chemisorption process. Microstructure characteristics and mechanism analysis further suggested that coprecipitation and surface complexation were the main mechanisms of Cd adsorption by biochar. Coprecipitation occurred mainly through the forms of Cd(OH)2 and CdCO3. Our results demonstrated that pinecone biochar was an efficient adsorbent which holds a huge potential for Cd(II) removal from aqueous solution.en_UK
dc.identifier.citationTeng D, Zhang B, Xu G, et al., (2020) Efficient removal of Cd(II) from aqueous solution by pinecone biochar: Sorption performance and governing mechanisms. Environmental Pollution, 265, Part A, Article number 115001en_UK
dc.identifier.issn0269-7491
dc.identifier.urihttps://doi.org/10.1016/j.envpol.2020.115001
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/16345
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectBiocharen_UK
dc.subjectCadmiumen_UK
dc.subjectAdsorptionen_UK
dc.subjectHeavy metalsen_UK
dc.subjectWater treatmenten_UK
dc.titleEfficient removal of Cd(II) from aqueous solution by pinecone biochar: Sorption performance and governing mechanismsen_UK
dc.typeArticleen_UK

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