Flocculation of kaolin in water using novel calcium chloride-polyacrylamide (CaCl2-PAM) hybrid polymer

Khai Ern Lee, Tjoon Tow Teng, Norhashimah Morad, Beng Teik Poh, Yong Fu Hong

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

The flocculation of kaolin suspension in water using a novel calcium chloride-polyacrylamide hybrid polymer has been studied. A redox initiation system - (NH4)2S2O8 and NaHSO 3 was used to initiate free radical solution polymerization of one molar acrylamide solution at 50 °C. One mole of calcium chloride was blended with polymerized acrylamide solution to synthesis a novel inorganic-organic composite polymer (CaCl2-PAM hybrid polymer). The CaCl 2-PAM hybrid polymer was characterized using Fourier transform infrared spectrometer (FT-IR) and transmission electron microscopy (TEM). TEM image showed that the CaCl2-PAM hybrid has a bulky and web-like nature. The CaCl2-PAM hybrid polymer was used in flocculating kaolin suspension. A factorial design was used in screening the factors for the flocculation of kaolin suspension to study the effect of two operating parameters (pH and dosage). The kaolin suspension flocculation was found to be pH and dosage dependent. Response surface methodology was done using central composite design and showed that the CaCl2-PAM hybrid polymer was able to reduce >98.0% of turbidity. The optimal operating condition was reported between pH 2 and 2.5 and dosage between 2 and 3 mg/L.

Original languageEnglish
Pages (from-to)346-351
Number of pages6
JournalSeparation and Purification Technology
Volume75
Issue number3
DOIs
Publication statusPublished - 20 Nov 2010
Externally publishedYes

Fingerprint

Kaolin
Pulse amplitude modulation
Calcium Chloride
Calcium chloride
Flocculation
Polyacrylates
Polymers
Water
Suspensions
Acrylamide
Transmission electron microscopy
Infrared transmission
Infrared spectrometers
Composite materials
Turbidity
Free radicals
Free Radicals
polyacrylamide
Fourier transforms
Screening

Keywords

  • Calcium chloride
  • Flocculation
  • Kaolin
  • Polyacrylamide

ASJC Scopus subject areas

  • Analytical Chemistry
  • Filtration and Separation

Cite this

Flocculation of kaolin in water using novel calcium chloride-polyacrylamide (CaCl2-PAM) hybrid polymer. / Lee, Khai Ern; Teng, Tjoon Tow; Morad, Norhashimah; Poh, Beng Teik; Hong, Yong Fu.

In: Separation and Purification Technology, Vol. 75, No. 3, 20.11.2010, p. 346-351.

Research output: Contribution to journalArticle

Lee, Khai Ern ; Teng, Tjoon Tow ; Morad, Norhashimah ; Poh, Beng Teik ; Hong, Yong Fu. / Flocculation of kaolin in water using novel calcium chloride-polyacrylamide (CaCl2-PAM) hybrid polymer. In: Separation and Purification Technology. 2010 ; Vol. 75, No. 3. pp. 346-351.
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