文献类型：期刊文献

英文题名：Cellulose / waste Cu2+-activated carbon composite: A sustainable and green material for boosting laccase activity and degradation of bisphenol A in wastewater

作者：Li, Na[1,2] Yu, Fangrui[2] Li, Hongbin[3] Meng, Xiangrui[2] Peng, Chuanbo[2] Sheng, Xueru[2] Zhang, Jian[2] Liu, Shanshan[1] Ping, Qingwei[2] Xiao, Huining[4]

第一作者：Li, Na

机构：[1] State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, China; [2] Liaoning Province Key Laboratory of Pulp and Papermaking Engineering, Dalian Polytechnic University, Dalian, l16034, China; [3] Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Jiangsu Province Key Laboratory of Biomass Energy and Materials, Nanjing, 210042, China; [4] Department of Chemical Engineering, University of New Brunswick, Fredericton, NB, E3B5A3, Canada

年份：2024

卷号：281

外文期刊名：International Journal of Biological Macromolecules

收录：EI(收录号：20244017149139);Scopus(收录号：2-s2.0-85205416780)

语种：英文

外文关键词：Biomass; Enzyme activity; Immobilized laccase

摘要：Low enzyme activity is one of the disadvantages of immobilized laccase. In this study, waste Cu2+-loaded activated carbon (Cu-AC) was successfully used in preparing a novel composite support，cellulose / Cu2+-loaded activated carbon beads (C / Cu-AC)， and effectively boosted immobilized laccase activity. To achieve optimum conditions for immobilization of laccase, the immobilization time, pH and laccase concentration were examined. The highest immobilized laccase activity (34.21 U/g) was achieved under optimum conditions (T = 4 h, pH = 4, C = 5 g/L), which was increased by 35.86 % compared to control. In addition, the immobilized laccase showed an outstanding performance in thermostability and reusability compared to free laccase. Moreover, the degradation of BPA by immobilized laccase was carried out, and the optimum degradation conditions were explored. Under such conditions: concentration of BPA was 75 mg / L and pH = 4, t = 1 h, T = 50 °C，the removal yield of BPA reached a maximum of 79.88 %. Therefore, the utilization of waste Cu-CA is a powerful method to boost immobilized laccase activity and creating a new way to high value treatment of waste Cu-CA. ? 2024 Elsevier B.V.