Affiliation:
1. College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211800, China
Abstract
Rapid extraction and concentration systems based on green materials such as cellulose or lignin are promising. However, there is still a need to optimize the material properties and production processes. Unlike conventional cellulose or lignin sorbent materials, aquatic reed root cells can concentrate external organic pollutants in the water and accumulate them in the plant. Inspired by this, a new nanocellulose–lignin aerogel (NLAG) was designed, in which nanocellulose was used as a substrate and lignin and polyamide epoxy chloropropane were used to crosslink cellulose in order to enhance the strength of the NLGA, resulting in good mechanical stability and water–oil amphiphilic properties. In practical applications, the organic membrane on the NLAG can transport organic pollutants from water to the NLAG, where they are immobilized. This is evidenced by the fact that the aerogel can remove more than 93% of exogenous phenol within a few minutes, highly enriching it inside. In addition, the aerogel facilitates filtration and shape recovery for reuse. This work establishes a novel biopolymer–aerogel-based extraction system with the advantages of sustainability, high efficiency, stability, and easy detachability, which are hard for the traditional adsorbent materials to attain.
Funder
National Natural Science Foundation of China
Subject
Polymers and Plastics,Organic Chemistry,Biomaterials,Bioengineering
Reference28 articles.
1. Recent developments of the nanocellulose extraction from water hyacinth: A review;Smriti;Cellulose,2023
2. Valorization of palm oil agro-waste into cellulose biosorbents for highly effective textile effluent remediation;Shanmugarajah;J. Clean. Prod.,2019
3. Oxygen-containing groups in cellulose and lignin biochar: Their roles in U(VI) adsorption;Feng;Environ. Sci. Pollut. Res.,2022
4. Eco-friendly materials obtained through a simple thermal transformation of water hyacinth (Eichhornia crassipes) for the removal and immobilization of Cd2+ and Cu2+ from aqueous solutions;Acelas;Environ. Nanotechnol. Monit. Manag.,2021
5. Water hyacinth (Eichhornia crassipes) for organic contaminants removal in water—A review;Amalina;J. Hazard. Mater.,2022