SYNTHESIS, CHARACTERIZATION AND APPLICATION OF KAOLIN-BASED ZSM-5 ZEOLITE FOR WATER DESALINATION

  • U.M. Aliyu
  • S. Rathilal
  • Y.M. Isa
Keywords: Kaolin, ZSM-5 zeolite, Seawater, Desalination, Salinity

Abstract

ZSM-5 was produced after the metakaolinization of Graham town clay deposit of Eastern Cape province South African and the use of NaOH, TPABr, Na2SiO3.9H2O solution and deionized water with a molar composition of 50SiO2:Al2O3:20Na2O:2TPABr:2000H2O. The synthesized product was characterized by XRD, SEM, TGA and BET surface area. The characterization results confirmed that the sample produced was of ZSM-5 phase. The product has a specific surface area, pore size and pore volume of 179.9 m2/g, 49.262A and 0.05 cm3/g respectively. The effect of zeolite dosage, (1.0, 2.5, 4.0, and 6.0g/100ml) on salinity reduction of seawater was investigated via adsorption study. The result revealed that effectiveness salinity (ES) increases with the increase of the sorbent dose. At 1.0g dose, the salt removal value is 1.04 ppt (SR) which is 3.64% effectiveness salt removal. At ZSM-5 dose of 2.5, 4.0, and 6.0 g, the SR values are 3.29, 6.46, and 8.12 ppt which correspond with ES value of 9.40, 18.40, and 23.20%.  ZSM-5 zeolite synthesized from kaolin of South African origin has shown great prospect as natural abundant sorbent material for desalination of synthetic seawater.

Author Biographies

U.M. Aliyu

Chemical Engineering Department

Durban University of Technology,

P.O. Box 1334, Durban 4000, South Africa.

S. Rathilal

Chemical Engineering Department

Durban University of Technology,

P.O. Box 1334, Durban 4000, South Africa.

Y.M. Isa

Chemical Engineering Department

Durban University of Technology,

P.O. Box 1334, Durban 4000, South Africa.

Published
2020-09-01