Nepel Thayane Carpanedo de Morais, Costa Josiel Martins, Vieira Melissa Gurgel Adeodato, Almeida Neto Ambrósio Florêncio de
School of Chemical Engineering, University of Campinas, Campinas, Brazil.
Environ Technol. 2022 Jan;43(4):469-477. doi: 10.1080/09593330.2020.1793005. Epub 2020 Jul 16.
This study presents a kinetic determination of copper removal from a real jewelry industry wastewater, with removal reaching 82.49% at 37°C, using fast galvanic pulse electrochemical technique in a process lasting 115 min. In the temperature range from 20 to 40°C, the mathematical model of the pseudo-first-order irreversible rate equation, with a correlation coefficient of 0.99, described the process behaviour. In this same temperature range, the Arrhenius' equation described the system, in which the temperature increase favoured the reaction kinetics. The scanning electron microscope (SEM), with energy-dispersive X-ray detector (EDX), X-ray photoelectron spectroscopy (XPS) results, and the mathematical model fitting at the temperatures of 10 and 50°C indicated the formation of copper oxide I.
本研究采用快速电脉冲电化学技术，对实际珠宝行业废水进行了铜去除动力学测定。在37°C下，经过115分钟的处理过程，铜的去除率达到82.49%。在20至40°C的温度范围内，伪一级不可逆速率方程的数学模型描述了该过程行为，相关系数为0.99。在相同温度范围内，阿伦尼乌斯方程描述了该系统，温度升高有利于反应动力学。扫描电子显微镜（SEM）结合能量色散X射线探测器（EDX）、X射线光电子能谱（XPS）结果，以及在10°C和50°C温度下的数学模型拟合表明生成了氧化铜I。
