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Boron adsorption by clinoptilolite using factorial design
Author(s) -
Kavak Duygu
Publication year - 2011
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.10500
Subject(s) - adsorption , clinoptilolite , boron , factorial experiment , chemistry , fractional factorial design , aqueous solution , nuclear chemistry , zeolite , chromatography , materials science , mathematics , organic chemistry , statistics , catalysis
In this article, boron removal from aqueous solutions by batch adsorption was investigated and 2 3 full factorial design was applied. Three parameters affected the performance and two levels of these parameters were investigated. The chosen parameters were temperature (25°C and 45°C), pH (3 and 7), and mass of adsorbent (0.1 g and 1 g). The significance of the effects was checked by analysis of variance (MINITAB‐Version 15). The model‐function equation for boron adsorption on clinoptilolite was obtained. The results showed that temperature, pH, and mass of adsorbent affected boron removal by adsorption. Boron removal increased with increasing pH and adsorbent dosage, but decreased with increasing temperature. The optimum conditions were found as pH = 7, adsorbent dosage = 1 g/25 mL solution, and temperature = 25°C by using factorial design. In addition, the effects of pH, temperature, adsorbent dosage, and initial boron concentration on boron removal were investigated. The adsorption isotherm studies were also performed. Maximum adsorbent capacity (q o ) was calculated as 3.64 mg/g. © 2010 American Institute of Chemical Engineers Environ Prog, 2010