摘要
本研究采用戊二醛将漆酶(Laccase)固定于细菌纤维素(BC)基材上,通过优化交联工艺,制备环境友好、重复使用的BC@Laccase消减材料;利用场发射扫描电子显微镜(FESEM)、傅里叶变换红外光谱仪(FT-IR)、热重分析仪(TGA)对其进行表征;评价其催化降解水体中2-氯苯酚性能。结果表明,BC@Laccase消减材料的最佳制备工艺条件为:固定时间4 h、固定温度25℃、环境pH值3.5;利用BC@Laccase消减材料对水体中2-氯苯酚进行催化降解,当芥子酸用量4 mmol/L、降解温度30℃、环境pH值3、降解时间5 h时,对2-氯苯酚降解能力最强,降解率达到76.9%;经过7次循环使用,BC@Laccase消减材料对2-氯苯酚的催化降解能力仍可保持在最初的84.8%以上。
In this study,glutaraldehyde was employed to fix laccase on bacterial cellulose(BC)substrate to prepare eco-friendly and reusable BC@Laccase eliminate materials by optimizing the crosslinking condition.FESEM,FT-IR,and TGA were used to characterize the obtained BC@Laccase product.The degradation performance of BC@Laccase on 2-chlorophenol in water was evaluated as well.The results showed that the optimal preparation process for the BC@Laccase was as follows:fixed time 4 h,fixed temperature 25℃,and pH value 3.5.The maximum catalytic degradation rate of 2-chlorophenol in water using BC@Laccase reached 76.9%under the catalytic conditions of erucic acid dosage of 4 mmol/L,degradation temperature of 30℃,pH value of 3,and degradation time of 5 h.Meanwhile,the catalytic degradation ability of BC@Laccase remained higher than 84.8%of its original capability after 7 cycles of use.
作者
陈杰
杨云
胡雪怡
张勇
龚宇
CHEN Jie;YANG Yun;HU Xueyi;ZHANG Yong;GONG Yu(Company Limited of Ce'an Energy Technology,Shanghai,201822;College of Materials Science and Engineering,Zhejiang Sci-Tech University,Hangzhou,Zhejiang Province,310018;Nuclear and Radiation Safety Center,Ministry of Ecology and Environment of the People’s Republic of China,Beijing,100082)
出处
《中国造纸》
CAS
北大核心
2021年第6期47-53,共7页
China Pulp & Paper
基金
浙江省重点研发计划项目(2020C04015)
浙江省自然科学基金面上项目(LY19C160010)
浙江省基础公益研究计划项目(LGF18C160002)
制浆造纸工程国家重点实验室开放基金项目(201758)
杭州市科技计划项目(20191203B28)。
作者简介
陈杰,高级工程师,研究方向:健康安全环境保护技术和实证研究;通信作者:龚宇,工程师,研究方向:安全与环境保护政策研究。
