Uptake capacity of ZN2+ by natural vietnamese basalt and their application for wastewater treatment

Nguyen Trung Minh, Cu Sy Thang, Nguyen Thi Thu, Nguyen Kim Thuong, Doan Thi Thu Tra, Nguyen Trung Kien, Nguyen Duc Chuy, Murari Prasad, Seong Taek Yun

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

This study describes experiments on the uptake capacity of Phuoc Long basalt, Vietnam, for Zn2+ and their application to wastewater treatment. Results have been compared with powdered activated carbon (PAC). The adsorption of Zn2+ from aqueous solution onto basalt and PAC was investigated in aqueous solution at pre-determined conditions (pH: 4.51−4.67, temperature 31 ± 0.5°C). Experimental values indicated that the first plateau of adsorption isotherm is at 12.50mM concentration of Zn2+ and the second at 50.00mM. The linear Langmuir 2 and Freundlich models were applied to describe equilibrium isotherm and both models fitted well. At Zn2+ concentration 12.50mM, the experimental adsorption capacity (qe) of basalt and PAC was 8.00 and 3.79mg/g, respectively. The calculated Langmuir adsorption capacity of basalt and PAC was found to be 19.42 and 76.92mg/g; r2 = 0.989 and 0.998; respectively. At 50.00mM Zn2+ concentration, the experimental adsorption capacity (qe) of basalt and PAC was 37.88 and 15.438mg/g, respectively. The calculated Langmuir adsorption capacity of basalt and PAC was found 17.73 and 71.43mg/g; r2 = 0.971 and 0.997, respectively. The Lagergren pseudo-first order and pseudo-second order were used to describe the kinetics data of basalt. The experimental data fitted well to the pseudo-second order r2 = 0.989 for the first 30min and to the first-order reaction (r2 = 0.988) beyond 30min.

Original languageEnglish
Title of host publicationAdvances in Geosciences: Volume 23: Hydrological Science (HS)
PublisherWorld Scientific Publishing Co.
Pages323-340
Number of pages18
ISBN (Electronic)9789814355339
ISBN (Print)9814355321, 9789814355322
DOIs
Publication statusPublished - 2011 Jan 1

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Engineering(all)
  • Environmental Science(all)

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