Preparation of cellulose gel extracted from rice straw and its application for metal ion removal from aqueous solutions

被引:10
作者
El-Zawahry, Manal M. [1 ]
Hassabo, Ahmed G. [2 ]
Mohamed, Amina L. [2 ]
机构
[1] Text Res & Technol Inst TRTI, Natl Res Ctr NRC, Dyeing Printing & Text Intermediate Dept DPTID, El Behouth St, Dokki 12622, Giza, Egypt
[2] Text Res & Technol Inst TRTI, Natl Res Ctr NRC, Pretreatment & Finishing Cellulose based Fibers De, El-Behouth St, Dokki 12622, Giza, Egypt
关键词
Chemically modified rice straw; Sorption; Metal ion; Kinetic model; ADSORPTION; SORPTION; DYE; LEAD; EQUILIBRIUM; BIOSORPTION; MECHANISM; KINETICS; CHITOSAN; ACID;
D O I
10.1016/j.ijbiomac.2023.125940
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Rice straw waste was used to extract natural cellulose fibers, which was then chemically converted to cellulose gel. Both extracted cellulose and modified cellulose (gel) were characterized using different techniques and used for biosorption of b+arium, manganese, cobalt, nickel, copper, zinc, and cadmium. Both celluloses' chemical compositions were investigated. The FT-IR, XRD, TEM, and SEM results all support the success of the proposed chemical modification. Because of the increase in pore size within the gel composition, the metal sorption capability of the final chelating material (gel) was greater than that of extracted cellulose. The experimental data were fit to the sorption isotherm models of Langmuir, Freundlich, and Temkin. This new modified biopolymer's behaviour suggested that it could be used as a promising sorbent for cation removal from polluted dye baths and waste water. Furthermore, this modified cellulose was prepared as cheap material extracted from the rise waste which helping in protection of the environment and it was confirm excellent behaviour in the removal heavy metals from their aqueous solution compared to the previous materials reported before.
引用
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页数:8
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