Preparation of sodium carboxymethyl cellulose from paper sludge

doi:10.1002/jctb.2057

CORC > 北京大学 > 环境科学与工程学院

	Preparation of sodium carboxymethyl cellulose from paper sludge
	He, Xiaojia ; Wu, Shaozu ; Fu, Dongkang ; Ni, Jinren
刊名	journal of chemical technology and biotechnology
	2009
关键词	paper sludge sodium carboxymethyl cellulose (CMC) reutilization MILL SLUDGE RHEOLOGICAL BEHAVIOR ASH COMPOSITES CAPABILITY REDUCTION CARBON PULP
DOI	10.1002/jctb.2057
英文摘要	BACKGROUND: This paper describes the reuse of paper sludge, an industrial solid waste, for the preparation of sodium carboxymethyl cellulose (CMC). The process includes pretreatment, basification and etherification. RESULTS: The optimal pretreatment condition involved the addition of 6.7% hydrochloric acid to the paper sludge for 30 min at 70 degrees C. The order of factors influencing the effect of reaction was: etherification temperature > sodium hydroxide dose > basification temperature > etherification time > sodium chloroacetate dose. The optimal preparation condition of CMC was: m(paper sludge): m(sodium hydroxide): m(sodium chloroacetate) = 0.9 : 0.8 : 1.15; basification at 40 degrees C; etherification at 60 degrees C for 1 h. Under these conditions, certified CMC with viscosity less than 20 mPa.s, DS more than 0.50 and purity more than 90% was produced. The results of Fourier transform infrared (FTIR) and X-ray diffraction (XRD) spectra analyses indicated that the product has characteristics of high degree of substitution (DS) and low crystallinity. The coated paper using CMC prepared from paper sludge as a water retention agent can meet the quality standards of GB/T 10335.1-2005. CONCLUSION: Preparation of CMC from paper sludge can be considered a feasible alternative, generating value-added product and contributing to solving environmental problems resulting from paper sludge. (C) 2008 Society of Chemical Industry; Biotechnology & Applied Microbiology; Chemistry, Multidisciplinary; Engineering, Chemical; SCI(E); EI; 10; ARTICLE; 3; 427-434; 84
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/158529]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	He, Xiaojia,Wu, Shaozu,Fu, Dongkang,et al. Preparation of sodium carboxymethyl cellulose from paper sludge[J]. journal of chemical technology and biotechnology,2009.
APA	He, Xiaojia,Wu, Shaozu,Fu, Dongkang,&Ni, Jinren.(2009).Preparation of sodium carboxymethyl cellulose from paper sludge.journal of chemical technology and biotechnology.
MLA	He, Xiaojia,et al."Preparation of sodium carboxymethyl cellulose from paper sludge".journal of chemical technology and biotechnology (2009).