title: Evaluation of ethylenediamine-modified nanofibrillated cellulose/chitosan composites on adsorption of cationic and anionic dyes from aqueous solution.
abstract: A multi-functional adsorbent was prepared by modifying nanofibrillated cellulose/chitosan composites with ethylenediamine (E-NFC/CS). The E-NFC/CS was characterized by FTIR and used for adsorption of cationic dye methylene blue (MB) and anionic dye new coccine (NC) from aqueous solution. The FTIR results showed that the E-NFC/CS contained more amino groups than the NFC/CS due to the modification for the NFC/CS with ethylenediamine. The results indicated that the maximum adsorption capacities occurred at pH 4.0 for MB and pH 2.0 for NC, respectively. The adsorption equilibrium time for MB and NC was 30 and 50min, respectively. In addition, the regenerated E-NFC/CS exhibited excellent adsorption performance for NC. It can keep almost 98% of the adsorption capacity after reused three times. Therefore, the E-NFC/CS can be potentially used as an effective adsorbent of cationic and anionic dyes in industrial effluents.
authors.affiliation: College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China. Electronic address: liuk1103@163.com.
authors.forename: Kai
authors.initials: K
authors.lastname: Liu
authors.affiliation: College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
authors.forename: Lihui
authors.initials: L
authors.lastname: Chen
authors.affiliation: College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
authors.forename: Liulian
authors.initials: L
authors.lastname: Huang
authors.affiliation: College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
authors.forename: Yaoneng
authors.initials: Y
authors.lastname: Lai
mesh_terms: D000327:Adsorption; D001391:Azo Compounds / Q000737:chemistry* / Q000302:isolation & purification; D002482:Cellulose / Q000737:chemistry*; D048271:Chitosan / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry / Q000302:isolation & purification; D005029:Ethylenediamines / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008751:Methylene Blue / Q000737:chemistry* / Q000302:isolation & purification; D049329:Nanostructures / Q000737:chemistry*; D009282:Naphthalenesulfonates / Q000737:chemistry* / Q000302:isolation & purification; D012996:Solutions; D013696:Temperature; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification; D018508:Water Purification
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents; D005029:Ethylenediamines; D009282:Naphthalenesulfonates; D012996:Solutions; D014874:Water Pollutants, Chemical; D014867:Water; C031234:ethylenediamine; D002482:Cellulose; D048271:Chitosan; D008751:Methylene Blue; C576297:ponceau 4R
keywords: Chitosan; Dye; Ethylenediamine; Nanofibrillated cellulose