Preparation of chitosan-based flocculant for high density waste drilling mud solid-liquid separation

• Published in: Journal of applied polymer science Vol. 125; no. 4; pp. 2646 - 2651
• Main Authors: Zhu, Hong, Sun, Haiyun, Wang, Fanghui, Zou, Jing, Fan, Jiantao
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 15.08.2012; Wiley; Wiley Subscription Services, Inc
• Subjects: Applied sciences; Bulk molding compounds; chitosan grafted; DMC; Drilling; Exact sciences and technology; Fourier transforms; High density; highly effective flocculant; Infrared spectroscopy; Materials science; Mud; Natural polymers; Physicochemistry of polymers; Polymers; Separation; Starch and polysaccharides; waste drilling mud; Wastes; Drilling mud; Quaternary ammonium copolymer; Experimental study; Property processing relationship; AM; Grafting; Optimization; high density; Bigraft copolymer; waste drilling mud; highly effective flocculant; Chitosan derivatives; Flocculation reagent; Flocculation; Preparation; Acrylamide copolymer; Solid waste; Oside polymer; Chitosan; Methacrylate copolymer; DMC; chitosan grafted
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/app.36418

High performance flocculant was prepared by chitosan (CS), ethacryloyloxyethyl trimethyl ammonium chloride (DMC), and acrylamide (AM). The optimum preparation conditions were determined by orthogonal test of four factors and three levels. The different factors affecting the flocculating ability of the prepared flocculants for waste drilling mud were studied, and optimal synthesis conditions were established: polymerization temperature was 60, reaction time was 4 h, DMC was 3 mL, w(AM) : w(CS) was 4, and the initiator was 0.4% of AM (wt %). The prepared CS–AM–DMC copolymer was characterized by Fourier Transform Infrared Spectroscopy (FTIR), scanning electron microscopy (SEM), and gel permeation chromatography (GPC). The results showed that AM, DMC were grafted to CS successfully. The solid–liquid separation properties were also investigated, and the prepared flocculant showed great advantages than commercial products for high density waste drilling mud use. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012