Aguilar-Ascón Edwar, Marrufo-Saldaña Liliana, Neyra-Ascón Walter
Universidad de Lima, Instituto de Investigación Científica, Grupo de Investigación en Tecnologías Exponenciales, Estudios Generales, Av. Javier Prado 4600, Surco, Lima, Perú.
Centro de Innovación Productiva y Transferencia Tecnológica del Cuero, Calzado e Industrias Conexas Producción, (CITEccal Lima) - ITP, Av. Caquetá 1300, Rímac, Lima, Perú.
Heliyon. 2024 Jan 23;10(3):e24647. doi: 10.1016/j.heliyon.2024.e24647. eCollection 2024 Feb 15.
This study is focused on reducing total chromium level in tannery wastewater through the electrocoagulation process, in order to comply with the maximum permissible limits (MPL) and to determine the effects from its main operating factors. For this purpose, a batch electrocoagulation reactor was manufactured using iron electrodes. Next, the response surface methodology was applied in the experimental design using a Box-Behnken design (BBD) with three factors: current intensity, treatment time, and level. In addition, the total chromium removal percentage was taken as a response variable. The corresponding statistical analysis revealed that the treatment time, current intensity, and level variables were significant at a confidence level of . Obtained in this study for a total chromium removal were: current intensity , time , and . Our results indicated that the electrocoagulation process effectively removes total chromium from tannery effluents up to MPL values.
本研究聚焦于通过电凝聚工艺降低制革废水中的总铬含量，以符合最大允许限值（MPL）并确定其主要运行因素的影响。为此，使用铁电极制造了一个间歇式电凝聚反应器。接下来，在实验设计中应用响应面方法，采用具有电流强度、处理时间和[此处原文缺失某一因素，未完整呈现]水平三个因素的Box-Behnken设计（BBD）。此外，将总铬去除率作为响应变量。相应的统计分析表明，在置信水平为[此处原文缺失置信水平具体数值，未完整呈现]时，处理时间、电流强度和[此处原文缺失某一因素，未完整呈现]水平变量具有显著性。本研究中获得的总铬去除率为：电流强度[此处原文缺失电流强度具体数值，未完整呈现]、时间[此处原文缺失时间具体数值，未完整呈现]和[此处原文缺失某一因素对应数值，未完整呈现]。我们的结果表明，电凝聚工艺能有效去除制革废水中的总铬，直至达到MPL值。
