title: Flocculation characteristics of polyacrylamide grafted cellulose from Phyllostachys heterocycla: An efficient and eco-friendly flocculant.
abstract: This work presents a synthesis process and flocculation characteristics of an eco-friendly flocculant based on bamboo pulp cellulose (BPC) from Phyllostachys heterocycla. Ployacrylamide (PAM) was grafted onto the BPC by free-radical graft copolymerization in homogeneous aqueous solution. The optimal synthesis conditions of the bamboo pulp cellulose-graft-ployacrylamide flocculant (BPC-g-PAM) and its performance on wastewater treatments were investigated. A UV-based method was used to rapidly determine the degree of substitution (DS) of BPC. The results showed that, under the optimal synthesis conditions, the obtained BPC-g-PAM held a grafting ratio of 43.8% and DS of 1.31. Turbidity removal of the product reached 98.0% accompanying with the significant flocculation and sedimentation in target suspensions. The flocculation mechanism was explored by means of zeta potential method. For negatively charged contaminants, like kaolin clay particles, the BPC-g-PAM could remove the contaminants efficiently via bridging and charge neutralization in acidic or neutral environment.
authors.affiliation: The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of the Ministry of Education, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, China.
authors.forename: Hongyi
authors.initials: H
authors.lastname: Liu
authors.affiliation: The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of the Ministry of Education, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, China.
authors.forename: Xiaogang
authors.initials: X
authors.lastname: Yang
authors.affiliation: The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of the Ministry of Education, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of the Ministry of Education, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, China.
authors.forename: Hangcheng
authors.initials: H
authors.lastname: Zhu
authors.affiliation: The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of the Ministry of Education, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, China. Electronic address: yaoj@zstu.edu.cn.
authors.forename: Juming
authors.initials: J
authors.lastname: Yao
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D002482:Cellulose / Q000737:chemistry*; D004563:Electrochemistry; D005427:Flocculation; D006863:Hydrogen-Ion Concentration; D007616:Kaolin / Q000737:chemistry; D006109:Poaceae / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods; D062065:Wastewater; D014874:Water Pollutants, Chemical; D018508:Water Purification; D000099166:Polyacrylamides
chemical_list: D000180:Acrylic Resins; D002482:Cellulose; D007616:Kaolin; D062065:Wastewater; D014874:Water Pollutants, Chemical; D000099166:Polyacrylamides
keywords: Cellulose-based flocculant; Eco-friendly; Flocculation characteristic; Flocculation mechanism; Synthesis process