ADSORPTION OF HUMIC ACID FROM AQUEOUS SOLUTIONS ONTO MODIFIED PUMICE WITH HEXADECYL TRIMETHYL AMMONIUM BROMIDE

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ASGARI GH.; GHANIZADEH GH.; SEYD MOHAMMADI A.

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Journal: JOURNAL OF BABOL UNIVERSITY OF MEDICAL SCIENCES (JBUMS) Year:2012 | Volume:14 | Issue:SUPPLEMENT 1 Page(s): 14-22

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Title

ADSORPTION OF HUMIC ACID FROM AQUEOUS SOLUTIONS ONTO MODIFIED PUMICE WITH HEXADECYL TRIMETHYL AMMONIUM BROMIDE

Author(s)

ASGARI GH. | GHANIZADEH GH. | SEYD MOHAMMADI A. | Issue Writer Certificate

Keywords

PUMICE STONEQ2

ADSORPTIONQ2

HUMIC ACIDQ2

HEXADECYL TRIMETHYL AMMONIUM BROMIDEQ2

Abstract

BACKGROUND AND OBJECTIVE: Removal of trihalomethanes (THMs) due to carcinogenic effects in liver, bladder, kidney and central nervous system dysfunctions is very crucial. Elimination of THMs precursors from drinking water resources is the most important step for inhibition of THMs formation. The aim of this study was to investigate the ADSORPTION of HUMIC ACID (HA) onto modified pumice with HEXADECYL TRIMETHYL AMMONIUM BROMIDE (HDTMABr).METHODS: This experimental study was carried out in chemistry laboratory of water and wastewater of Hamadan University of Medical Sciences, Hamadan, Iran. Apparent characteristics and chemical structure of pumice was determined via scanning electronic microscope (SEM), X-Ray diffraction (XRD) and X-Ray fluorescent (XRF) techniques. HA concentration was determined by photometry on 254 nm. Langmuir, Freundlich and Temkin models and pseudo-first and pseudo second-order kinetics were used for ADSORPTION isotherm and kinetics studies.FINDINGS: Elevation of preliminary concentration of HA, adsorbent dosage and contact time led to increasing of HA ADSORPTION. Increasing of pH in the range of 3 to 12 led to decreasing of ADSORPTION and the experimental maximum ADSORPTION occurred in pH: 3. ADSORPTION of HA onto modified pumice complies with Langmuir (R2=0.99) and pseudo second-order kinetic (R2=0.99). Maximum experimental (Qexp max) and theoretical ADSORPTION (QCal max) was 22.5 mg/g and 29 mg/g, respectively. Langmuir constant (b) was 0.8 L/mg.CONCLUSION: The results of this study showed that in acidic condition the modified pumice with HDTMA-Br has an appropriate efficiency on HA ADSORPTION.

Cites

PHOTOCATALYTIC REMOVAL OF NATURAL ORGANIC MATTER FROM AQUEOUS SOLUTIONS USING ZINC OXIDE NANOPARTICLES IMMOBILIZED ON GLASS

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APA: Copy

ASGARI, GH., GHANIZADEH, GH., & SEYD MOHAMMADI, A.. (2012). ADSORPTION OF HUMIC ACID FROM AQUEOUS SOLUTIONS ONTO MODIFIED PUMICE WITH HEXADECYL TRIMETHYL AMMONIUM BROMIDE. JOURNAL OF BABOL UNIVERSITY OF MEDICAL SCIENCES (JBUMS), 14(SUPPLEMENT 1), 14-22. SID. https://sid.ir/paper/73630/en

Vancouver: Copy

ASGARI GH., GHANIZADEH GH., SEYD MOHAMMADI A.. ADSORPTION OF HUMIC ACID FROM AQUEOUS SOLUTIONS ONTO MODIFIED PUMICE WITH HEXADECYL TRIMETHYL AMMONIUM BROMIDE. JOURNAL OF BABOL UNIVERSITY OF MEDICAL SCIENCES (JBUMS)[Internet]. 2012;14(SUPPLEMENT 1):14-22. Available from: https://sid.ir/paper/73630/en

IEEE: Copy

GH. ASGARI, GH. GHANIZADEH, and A. SEYD MOHAMMADI, “ADSORPTION OF HUMIC ACID FROM AQUEOUS SOLUTIONS ONTO MODIFIED PUMICE WITH HEXADECYL TRIMETHYL AMMONIUM BROMIDE,” JOURNAL OF BABOL UNIVERSITY OF MEDICAL SCIENCES (JBUMS), vol. 14, no. SUPPLEMENT 1, pp. 14–22, 2012, [Online]. Available: https://sid.ir/paper/73630/en

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