Characterization of biopolymeric flocculant (pectin) and organic synthetic flocculant (PAM): A comparative study on treatment and optimization in kaolin suspension

被引:108
作者
Ho, Y. C. [1 ]
Norli, I. [1 ]
Alkarkhi, Abbas F. M. [1 ]
Morad, N. [1 ]
机构
[1] Univ Sains Malaysia, Sch Ind Technol, Minden 11800, Penang, Malaysia
关键词
Biopolymeric flocculant; Molecular weight; Pectin; Polyacrylamide; Thermal degradation; POLYMER STRUCTURE TYPE; ADSORPTION; VISCOSITY; POLYACRYLAMIDE; COAGULATION; RHEOLOGY; CHLORIDE; KINETICS; SUGARS;
D O I
10.1016/j.biortech.2009.09.064
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
Polyacrylamide (PAM), a commonly used organic synthetic flocculant, is known to have high reduction in turbidity treatment. However, PAM is not readily degradable. In this paper, pectin as a biopolymeric flocculant is used. The objectives are (i) to determine the characteristics of both flocculants (ii) to optimize the treatment processes of both flocculants in synthetic turbid waste water. The results obtained indicated that pectin has a lower average molecular weight at 1.63 x 10(5) and PAM at 6.00 x 10(7). However, the thermal degradation results showed that the onset temperature for pectin is at 165.58 degrees C, while the highest onset temperature obtained for PAM is at 235.39 degrees C. The optimum treatment conditions for the biopolymeric flocculant for flocculating activity was at pH 3, cation concentration at 0.55 mM, and pectin concentration at 3 mg/L. In contrast, PAM was at pH 4, cation concentration >0.05 mM and PAM concentration between 13 and 30 mg/L. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1166 / 1174
页数:9
相关论文
共 40 条
[1]   Effect of high pressure treatment on thermal properties of polylactides [J].
Ahmed, Jasim ;
Varshney, Sunil K. ;
Zhang, Jian-Xin ;
Ramaswamy, Hosahalli S. .
JOURNAL OF FOOD ENGINEERING, 2009, 93 (03) :308-312
[2]  
[Anonymous], 2004, DESIGN ANAL EXPT
[3]  
Arslan N, 1995, J FOOD SCI TECH MYS, V32, P381
[4]  
BENSCHOTEN JEV, 1990, J INORG BIOCHEM, V69, P193
[5]   THE EFFECT OF SURFACE MODIFICATION BY AN ORGANOSILANE ON THE ELECTROCHEMICAL PROPERTIES OF KAOLINITE [J].
BRAGGS, B ;
FORNASIERO, D ;
RALSTON, J ;
STSMART, R .
CLAYS AND CLAY MINERALS, 1994, 42 (02) :123-136
[6]   EFFECT OF SUGARS ON VISCOSITY OF PECTIN SOLUTIONS .2. COMPARISON OF DEXTROSE MALTOSE AND DEXTRINS [J].
CHEN, TS ;
JOSLYN, MA .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1967, 25 (03) :346-&
[7]   A kinetic investigation of cationic starch adsorption and flocculation in kaolin suspension [J].
Chen, Yanxiao ;
Liu, Shaoying ;
Wang, Gongying .
CHEMICAL ENGINEERING JOURNAL, 2007, 133 (1-3) :325-333
[8]  
CONLEY RT, 1970, EUR POLYM J, V37, P1655
[9]  
Constenla D, 2003, LAT AM APPL RES, V33, P91
[10]   Coagulation and flocculation of laterite suspensions with low levels of aluminium chloride and polyacrylamids [J].
Dihang, Desire ;
Aimar, Pierre ;
Kayem, Joseph ;
Koungou, Sylvere Ndi .
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION, 2008, 47 (9-10) :1509-1519