啤酒废水对镉的吸附研究

Q1 Environmental Science

Bioresource Technology Reports Pub Date : 2025-04-02 DOI:10.1016/j.biteb.2025.102108

Izabela Gouveia Nascimento , Erica Souto Abreu de Lima , Clenya Carla Leandro de Oliveira , Nelson Moura Brasil do Amaral Sobrinho , Farley Alexandre da Fonseca Breda , David Vilas Boas de Campos , Érika Flávia Machado Pinheiro

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引用次数: 0

摘要

尽管巴西农业工业部门具有社会经济重要性，但啤酒工业产生的残留物未经处理被视为污染源。再利用的一种方法是作为生物吸附剂。目的是评估啤酒废弃物（rde残留硅藻土和mb麦芽甘蔗渣）在吸附Cd（II）方面的潜在用途。对废物进行了化学和形态表征。采用间歇式吸附法进行吸附实验。通过选择最能描述Cd（II）吸附的等温模型来评估废物的潜在用途。结果表明，线性模型和langmuir -划分模型最能描述两种啤酒废水对Cd（II）的吸附过程。模型得到的Kd参数表明Cd（II）对MB具有较高的亲和力。RDE以特定形式吸附了80%以上的Cd(II)， MB吸附了60%以上。RDE和MB被证明是很有前途的Cd（II）生物吸附过程的吸附剂。

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Adsorption of cadmium by brewery waste

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Adsorption of cadmium by brewery waste

Despite the socioeconomic importance of the Brazilian agroindustrial sector, the beer industry generates residues, which, without treatment is seen as a source of contamination. One way to reuse would be as biosorbents. The goal is to evaluate the potential use of brewery wastes (RDE-residual diatomaceous earth and MB-malt bagasse) in the adsorption of Cd(II). Wastes were chemically and morphologically characterized. Adsorption experiments were carried out through the Batch Method. The potential use of the wastes was evaluated by selecting isothermal models that best described Cd(II) adsorption. The results show that the Linear and the Langmuir-partition models best described the Cd(II) adsorption process for both brewery wastes. The parameter Kd obtained by the models indicated a higher affinity of Cd(II) for MB. RDE adsorbed over 80% of Cd(II) in a specific form and MB over 60%. RDE and MB proved to be promising sorbents for Cd(II) biosorption process.

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