Pacheco Hugo G J, Elguera Naysha Y, Ancco Midwar, Castro Antonio E L F, Meza Maria E B, Almeida Vitor C
Instituto de Investigación e Innovación en Energías Renovables y Medio Ambiente, Lima, Peru.
Universidad Católica de Santa María, Urb. San José, San Jose s/n, Yanahuara, Arequipa, Peru.
Environ Monit Assess. 2023 Mar 21;195(4):491. doi: 10.1007/s10661-023-11095-y.
This work reports a combined coagulation-electrocoagulation process using a biocoagulant from the Opuntia ficus-indica for treatment of cheese whey wastewater. The process parameters as pH, biocoagulant dosage, and current density were evaluated from the chemometric tools. A Box-Behnken design was used, having as responses the removal percentages of turbidity and chemical oxygen demand (COD). The results showed that for the studied variable ranges, linear models were obtained and the pH was parameter more significant for treatment proposed. The pH showed synergic effect with the investigated parameters, while the biocoagulant dosage and density current showed antagonistic effects. The desirability function was used to optimization of process, and suggested values were pH 10.0, biocoagulant dosage of 4.4 g L, and current density of 31.5 mA cm, which showed removals of turbidity and COD of 98.9 and 83.8%, respectively.
这项工作报道了一种联合混凝-电凝聚工艺，该工艺使用来自仙人掌的生物絮凝剂处理奶酪乳清废水。通过化学计量学工具评估了诸如pH值、生物絮凝剂用量和电流密度等工艺参数。采用Box-Behnken设计，以浊度和化学需氧量（COD）的去除率作为响应指标。结果表明，在所研究的变量范围内，获得了线性模型，并且pH值是所提出处理方法中更显著的参数。pH值与所研究的参数显示出协同效应，而生物絮凝剂用量和电流密度则显示出拮抗效应。使用合意函数对工艺进行优化，建议值为pH 10.0、生物絮凝剂用量4.4 g/L和电流密度31.5 mA/cm²，此时浊度和COD的去除率分别为98.9%和83.8%。
