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Removal of nitrate from aqueous solutions in batch systems using activated perlite: an application of response surface methodology
Author(s) -
Baei Mazyar Sharifzadeh,
Esfandian Hossein,
Nesheli Arash Azizzadeh
Publication year - 2016
Publication title -
asia‐pacific journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.348
H-Index - 35
eISSN - 1932-2143
pISSN - 1932-2135
DOI - 10.1002/apj.1965
Subject(s) - perlite , adsorption , nitrate , aqueous solution , response surface methodology , sulfuric acid , central composite design , chemistry , composite number , chemical engineering , pulp and paper industry , chromatography , materials science , inorganic chemistry , engineering , metallurgy , composite material , organic chemistry
The aim of this research is to facilitate the adsorption of nitrate on perlite acid treated with dilute H 2 SO 4 solutions. The activated perlite with 0.06 N sulfuric acid resulted in a higher efficiency in the removal of NO 3 − from aqueous solutions and was adopted for subsequent investigations. To analyze the process, a significant variable, i.e. removal efficiency (%) of nitrate and three dependent parameters as the process responses, was examined through a central composite design under the response surface methodology. The optimum conditions included pH 5, contact time of 120 min and an adsorbent amount of 0.7 g. The percentage removal of NO 3 − in batch administrations was 91.01. © 2016 The Authors Asia‐Pacific Journal of Chemical Engineering published by Curtin University of Technology and John Wiley & Sons, Ltd.