Multidisciplinary Graduate Program in Environmental Sciences, Autonomous University of San Luis Potosi, Av. Manuel Nava 201, Col. Zona Universitaria Poniente, 78210, San Luis Potosí, SLP, Mexico.
Interdisciplinary Professional Unit of Engineering, Campus Zacatecas, Instituto Politécnico Nacional, Blvd. del Bote 202 Cerro del Gato Ejido la Escondida, Col. Ciudad Administrativa, 98160, Zacatecas, ZAC, México.
Sci Rep. 2022 Jun 15;12(1):9917. doi: 10.1038/s41598-022-14242-6.
This study evaluated the effectiveness of a biocoagulant produced from the devilfish invasive species and its combination with two chemical coagulants (aluminum sulfate and ferric sulfate) to remove turbidity, chemical oxygen demand, and total suspended solids in ceramic industry wastewater using a combined experimental design of Mixture-Process. This design optimized the coagulation process and evaluated the effects and interactions between mixture components and coagulant doses. An analysis of variance was used to analyze the experimental data obtained in the study, and the response surface plots by response type (turbidity, chemical oxygen demand, and total suspended solids) were obtained. Results showed that the coagulation treatment could be technically and economically feasible since efficiencies of turbidity, chemical oxygen demand, and total suspended solids removal of 74, 79, and 94% could be achieved using an optimal coagulant dose of 800 mg/L with a mixture of 35% biocoagulant and 65% ferric sulfate. Analysis of variance results showed that the models are significant, and the lack of fit is not required according to the probability value (p value), which were < 0.0001, and > 0.05, respectively. Hence, the experimental data were fitted to a combined reduced special cubic x linear model. These results support the use of devilfish meal as a biocoagulant, being more feasible in dual systems when mixed with ferric sulfate.
本研究采用混合-过程组合实验设计，评估了一种源自入侵物种鬼蝠鲼的生物凝结剂及其与两种化学凝结剂（硫酸铝和硫酸铁）结合使用，去除陶瓷工业废水中浊度、化学需氧量和总悬浮固体的效果。该设计优化了凝结过程，并评估了混合物成分和凝结剂量之间的相互作用和影响。方差分析用于分析研究中获得的实验数据，并通过响应类型（浊度、化学需氧量和总悬浮固体）获得响应曲面图。结果表明，凝结处理在技术和经济上都是可行的，因为使用 800mg/L 的最佳凝结剂剂量和 35%生物凝结剂与 65%硫酸铁的混合物，可以实现 74%、79%和 94%的浊度、化学需氧量和总悬浮固体去除效率。方差分析结果表明，模型是显著的，根据概率值（p 值），不需要进行拟合不足检验，分别为<0.0001 和>0.05。因此，实验数据拟合为组合简化特殊立方 x 线性模型。这些结果支持将鬼蝠鲼粉用作生物凝结剂，当与硫酸铁混合使用时，在双系统中更可行。
