EFFICIENCY OF EDTA MODIFIED NANOCLAY IN REMOVAL OF HUMIC ACID FROM AQUATIC SOLUTIONS

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ABDOALLAHZADEH HOSSEIN; ALIZADEH BABAK; KHOSRAVI RASOUL; FAZLZADEH MEHDI

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Journal: Journal of Mazandaran University of Medical Sciences Year:2016 | Volume:26 | Issue:139 Page(s): 111-125

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Title

EFFICIENCY OF EDTA MODIFIED NANOCLAY IN REMOVAL OF HUMIC ACID FROM AQUATIC SOLUTIONS

Author(s)

ABDOALLAHZADEH HOSSEIN | ALIZADEH BABAK | KHOSRAVI RASOUL | FAZLZADEH MEHDI | Issue Writer Certificate

Keywords

HUMIC ACIDQ2

NANOCLAYQ1

EDTAQ2

THMSQ1

Abstract

Background and purpose: Natural organic matter in water resources (mainly caused by HUMIC ACID) leads to formation of THMS and HAAs. Removal of DBPs precursors from drinking water resources is the most important step to prevent from THMS formation. The aim of this study was to investigate the efficiency of modified NANOCLAY with EDTA and fresh NANOCLAY in adsorption of HUMIC ACID in aquatic solutions.Materials and methods: Characteristics and chemical structure of fresh and modified NANOCLAYs were determined via scanning electronic microscope (SEM), BET, XRD, and FTIR techniques. HA concentration was determined by spectrophotometric method in 254 nm. Langmuir, Freundlich models and pseudo-first and pseudo second-order kinetics were used for adsorption isotherm and kinetics studies, respectively.Results: The XRD results showed that the distance between the layers increased after modification of NANOCLAY with EDTA. Also, BET analysis revealed that specific area of NANOCLAY increased from 13.02 to 28.36 m2/gr after modification. By decrease in pH the efficiency in removal of HUMIC ACID increased and in constant initial concentration of HA by increasing adsorbent dosage the adsorption capacity decreased. Adsorption of HA onto modified NANOCLAY and fresh NANOCLAY complies with Langmuir (R2=0.989) and Freundlich (R2=0.96), respectively. The pseudo-first order kinetic complies for both adsorptions.Conclusion: This study showed that in acidic condition the modified NANOCLAY has an appropriate efficiency on HA adsorption.

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APA: Copy

ABDOALLAHZADEH, HOSSEIN, ALIZADEH, BABAK, KHOSRAVI, RASOUL, & FAZLZADEH, MEHDI. (2016). EFFICIENCY OF EDTA MODIFIED NANOCLAY IN REMOVAL OF HUMIC ACID FROM AQUATIC SOLUTIONS. JOURNAL OF MAZANDARAN UNIVERSITY OF MEDICAL SCIENCES, 26(139), 111-125. SID. https://sid.ir/paper/44787/en

Vancouver: Copy

ABDOALLAHZADEH HOSSEIN, ALIZADEH BABAK, KHOSRAVI RASOUL, FAZLZADEH MEHDI. EFFICIENCY OF EDTA MODIFIED NANOCLAY IN REMOVAL OF HUMIC ACID FROM AQUATIC SOLUTIONS. JOURNAL OF MAZANDARAN UNIVERSITY OF MEDICAL SCIENCES[Internet]. 2016;26(139):111-125. Available from: https://sid.ir/paper/44787/en

IEEE: Copy

HOSSEIN ABDOALLAHZADEH, BABAK ALIZADEH, RASOUL KHOSRAVI, and MEHDI FAZLZADEH, “EFFICIENCY OF EDTA MODIFIED NANOCLAY IN REMOVAL OF HUMIC ACID FROM AQUATIC SOLUTIONS,” JOURNAL OF MAZANDARAN UNIVERSITY OF MEDICAL SCIENCES, vol. 26, no. 139, pp. 111–125, 2016, [Online]. Available: https://sid.ir/paper/44787/en

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