Nanocellulose as green material for remediation of hazardous heavy metal contaminants

编号 020032602

推送时间 20220117

研究领域 林产化工 

年份 2022 

类型 期刊 

语种 英语

标题 Nanocellulose as green material for remediation of hazardous heavy metal contaminants

来源期刊 Journal of?hazardous?materials

期 第326期

发表时间 20211028

关键词 Nanocellulose;  Heavy metals;  Surface modification;  Bioremediation;  Membranes; 

摘要 Heavy metal pollution generated by urban and industrial activities has become a major global concern due to its high toxicity, minimal?biodegradability, and persistence in the food chain. These are the severe pollutants that have the potential to harm humans and the environment as a whole. Mercury, chromium, copper, zinc, cadmium, lead, and nickel are the most often discharged hazardous heavy metals.?Nanocellulose, reminiscent of many other sustainable?nanostructured materials, is gaining popularity for application in bioremediation technologies owing to its many unique features and potentials. The adsorption of heavy metals from wastewaters is greatly improved when cellulose dimension is reduced to nanometric levels. For instance, the adsorption efficiency of Cr3+?and Cr6+?is found to be 42.02% and 5.79% respectively using microcellulose, while nanocellulose adsorbed 62.40% of Cr3+?ions and 5.98% of Cr6+?ions from contaminated water. These nanomaterials are promising in terms of their ease and low cost of regeneration. This review addresses the relevance of nanocellulose as biosorbent, scaffold, and membrane in various heavy metal bioremediation, as well as provides insights into the challenges, future prospects, and updates. The methods of designing better nanocellulose biosorbents to improve adsorption efficiency according to contaminant types are focused.

服务人员 尚玮姣

服务院士 宋湛谦

PDF文件 浏览全文