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首页> 外文期刊>African Journal of Biotechnology >Cobalt removal from wastewater using pine sawdust
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Cobalt removal from wastewater using pine sawdust

机译：使用松木屑去除废水中的钴

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Agricultural wastes can cause environmental problems if not well managed, but there is a lot of potential to use these wastes as raw material in other processes. In this investigation, pine sawdust was evaluated as an adsorbent in the treatment of wastewater containing cobalt ions. A two-level three-factor full-factorial experimental design with centre points was used to study the interactive effect of the operating parameters in order to achieve the best conditions for the batch adsorption of cobalt ions. A response surface analysis was also conducted to further understand the interactions amongst the factors such as adsorbent dose, solution pH and initial concentration. In addition, adsorption isotherms, namely the Freundlich and Langmuir, were used to characterize the removal of cobalt from the wastewater. It was observed that the combined effect of low adsorbent dose, high pH and high initial concentration of wastewater resulted in the highest adsorption capacity. The Freundlich isotherm provided a better fit to the experimental data than the Langmuir isotherm. Moreover, pine sawdust showed adsorption capabilities for cobalt, and hence it could be an option in the quest to use waste to treat wastewater.
机译：如果管理不善，农业废料会引起环境问题，但是将这些废料用作其他过程的原料有很大的潜力。在这项研究中，松木屑被评估为吸附剂，用于处理含钴离子的废水。为了达到最佳的分批吸附钴离子的条件，采用了一个以中心为中心的两级三因子全因子实验设计来研究操作参数的相互作用。还进行了响应面分析，以进一步了解各种因素之间的相互作用，例如吸附剂剂量，溶液pH和初始浓度。此外，吸附等温线即Freundlich和Langmuir用于表征从废水中去除钴的特性。观察到低吸附剂量，高pH和高废水初始浓度的综合作用导致最高的吸附容量。与Langmuir等温线相比，Freundlich等温线更适合实验数据。此外，松木屑显示出对钴的吸附能力，因此它可能是寻求使用废物处理废水的一种选择。

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