Wei Yuhang, Xie Weiwei, Wang Xinyue, Chong Qingyang, Li Song, Chen Zhiming
School of Chemical and Environmental Engineering, Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, Anhui Polytechnic University, Wuhu 241000, China.
School of Biology and Food Engineering, Anhui Polytechnic University, Wuhu 241000, China.
Int J Biol Macromol. 2024 Dec;282(Pt 3):137053. doi: 10.1016/j.ijbiomac.2024.137053. Epub 2024 Oct 29.
The degradation of synthetic dye wastewater is important for green chemistry and cost-effectiveness. In this study, we developed FeO@C-laccase (laccase immobilized on FeO@C nanoparticles) for photothermal degradation of high concentration of triphenylmethane dye wastewater. The FeO@C-laccase possessed superior pH and thermal stabilities, as well as excellent tolerance to organic solvents, inhibitors, and metal ions. Laccase activity assays revealed that the activity recovery was approximately 118.2 %. Furthermore, the FeO@C-laccase presented rapid and sustainable photothermal degradation capabilities to triphenylmethane dye wastewater. The initial removal efficiencies of 400 mg/L malachite green (MG), 400 mg/L brilliant green (BG), 100 mg/L crystal violet (CV), and 600 mg/L mixed dye (MG:BG:CV = 1:1:1) wastewater were approximately 99.8 %, 99.9 %, 96.4 % and 99.2 % by 60 min treatment, respectively. After undergoing 10 batches of reuse, the photothermal degradation efficiencies of the triphenylmethane dye wastewater remained consistently high, at about 99.3 %, 97.4 %, 94.0 %, and 95.1 %, respectively. The excellent photothermal degradation properties indicate that the FeO@C-laccase holds promise for addressing high concentration of textile wastewater in various applications.
合成染料废水的降解对于绿色化学和成本效益而言至关重要。在本研究中，我们开发了FeO@C-漆酶（漆酶固定在FeO@C纳米颗粒上）用于光热降解高浓度三苯甲烷染料废水。FeO@C-漆酶具有卓越的pH稳定性和热稳定性，以及对有机溶剂、抑制剂和金属离子的出色耐受性。漆酶活性测定表明活性回收率约为118.2%。此外，FeO@C-漆酶对三苯甲烷染料废水具有快速且可持续的光热降解能力。通过60分钟处理，400mg/L孔雀石绿（MG）、400mg/L亮绿（BG）、100mg/L结晶紫（CV）和600mg/L混合染料（MG:BG:CV = 1:1:1）废水的初始去除效率分别约为99.8%、99.9%、96.4%和99.2%。经过10批次重复使用后，三苯甲烷染料废水的光热降解效率始终保持在较高水平，分别约为99.3%、97.4%、94.0%和95.1%。优异的光热降解性能表明FeO@C-漆酶在各种应用中处理高浓度纺织废水方面具有广阔前景。
