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Ammonium ion removal using activated zeolite and chitosan

Nurliyana Nasuha Safie, Abu Zahrim Yaser, Nidal Hilal

Asia-Pacific Journal of Chemical Engineering, Volume: 15, Issue: 3

Swansea University Author: Nidal Hilal

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DOI (Published version): 10.1002/apj.2448

Abstract

Studies have previously been done on efficacies of chitosan and zeolite in ammonium ion (NH4+) removal. However, no study compares the adsorption performance of natural zeolite and activated natural zeolite with high and low molecular weight chitosan. Hence, this study investigates the potentials of...

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Published in: Asia-Pacific Journal of Chemical Engineering
ISSN: 1932-2135 1932-2143
Published: Wiley 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa53810
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spelling 2020-07-05T16:08:06.6203982 v2 53810 2020-03-11 Ammonium ion removal using activated zeolite and chitosan 3acba771241d878c8e35ff464aec0342 Nidal Hilal Nidal Hilal true false 2020-03-11 FGSEN Studies have previously been done on efficacies of chitosan and zeolite in ammonium ion (NH4+) removal. However, no study compares the adsorption performance of natural zeolite and activated natural zeolite with high and low molecular weight chitosan. Hence, this study investigates the potentials of natural zeolite (NZ), activated natural zeolite (ANZ), low molecular weight chitosan (LMWC) and high molecular weight chitosan (HMWC) in NH4+ removal. The characteristics of NZ, ANZ, LMWC, and HMWC such as functional groups, surface morphology, elemental composition, zeta potential and particle size were also investigated. The deposition of NH4+ on the surface of NZ and ANZ was confirmed with the absence of nitrogen by the adsorption spectrum of EDX and supported by the presence of an FTIR stretching band at 3500-3300 cm-1, as well as broader and less intense bands 1600 cm-1 after the adsorption for all the adsorbents. The particle size of LMWC, HMWC, NZ and ANZ were 98, 813, 22354 and 9826 nm, respectively. Meanwhile, after the activation process, the composition of O, Si, Al, Fe, Ca and Na were reduced. NH4+ batch adsorption was also studied. HMWC, NZ, and ANZ reached adsorption equilibrium at 15 h, meanwhile for LMWC, the equilibrium reached at t = 20 h. The adsorption capacity of LMWC, HMWC, NZ, and ANZ at an initial concentration of 50 mg/L were 0.769 mg/g, 0.331 mg/g, 2.162 mg/g and 2.937 mg/g respectively. ANZ had the highest adsorption capacity, which might be related to the reduction of cationic elements such as Fe, Ca and Na after the activation has increased the unbalanced negative charge within the crystal lattice of ANZ that can be neutralized by NH4+ hence led to higher adsorption. HMWC has the lowest adsorption capacity that may be due it is positively charged at pH 7 which would favor the adsorption of negatively charged species instead of positively charged species, NH4+. Journal Article Asia-Pacific Journal of Chemical Engineering 15 3 Wiley 1932-2135 1932-2143 adsorption, ammonia, chitosan, natural, nitrogen, zeolite 2 6 2020 2020-06-02 10.1002/apj.2448 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2020-07-05T16:08:06.6203982 2020-03-11T19:49:37.1954187 Nurliyana Nasuha Safie 1 Abu Zahrim Yaser 2 Nidal Hilal 3 53810__16842__44a69193e6fa46cda33219b2f50578ca.pdf safie2020.pdf 2020-03-12T14:09:14.9298030 Output 924466 application/pdf Accepted Manuscript true 2021-03-11T00:00:00.0000000 true eng
title Ammonium ion removal using activated zeolite and chitosan
spellingShingle Ammonium ion removal using activated zeolite and chitosan
Nidal Hilal
title_short Ammonium ion removal using activated zeolite and chitosan
title_full Ammonium ion removal using activated zeolite and chitosan
title_fullStr Ammonium ion removal using activated zeolite and chitosan
title_full_unstemmed Ammonium ion removal using activated zeolite and chitosan
title_sort Ammonium ion removal using activated zeolite and chitosan
author_id_str_mv 3acba771241d878c8e35ff464aec0342
author_id_fullname_str_mv 3acba771241d878c8e35ff464aec0342_***_Nidal Hilal
author Nidal Hilal
author2 Nurliyana Nasuha Safie
Abu Zahrim Yaser
Nidal Hilal
format Journal article
container_title Asia-Pacific Journal of Chemical Engineering
container_volume 15
container_issue 3
publishDate 2020
institution Swansea University
issn 1932-2135
1932-2143
doi_str_mv 10.1002/apj.2448
publisher Wiley
document_store_str 1
active_str 0
description Studies have previously been done on efficacies of chitosan and zeolite in ammonium ion (NH4+) removal. However, no study compares the adsorption performance of natural zeolite and activated natural zeolite with high and low molecular weight chitosan. Hence, this study investigates the potentials of natural zeolite (NZ), activated natural zeolite (ANZ), low molecular weight chitosan (LMWC) and high molecular weight chitosan (HMWC) in NH4+ removal. The characteristics of NZ, ANZ, LMWC, and HMWC such as functional groups, surface morphology, elemental composition, zeta potential and particle size were also investigated. The deposition of NH4+ on the surface of NZ and ANZ was confirmed with the absence of nitrogen by the adsorption spectrum of EDX and supported by the presence of an FTIR stretching band at 3500-3300 cm-1, as well as broader and less intense bands 1600 cm-1 after the adsorption for all the adsorbents. The particle size of LMWC, HMWC, NZ and ANZ were 98, 813, 22354 and 9826 nm, respectively. Meanwhile, after the activation process, the composition of O, Si, Al, Fe, Ca and Na were reduced. NH4+ batch adsorption was also studied. HMWC, NZ, and ANZ reached adsorption equilibrium at 15 h, meanwhile for LMWC, the equilibrium reached at t = 20 h. The adsorption capacity of LMWC, HMWC, NZ, and ANZ at an initial concentration of 50 mg/L were 0.769 mg/g, 0.331 mg/g, 2.162 mg/g and 2.937 mg/g respectively. ANZ had the highest adsorption capacity, which might be related to the reduction of cationic elements such as Fe, Ca and Na after the activation has increased the unbalanced negative charge within the crystal lattice of ANZ that can be neutralized by NH4+ hence led to higher adsorption. HMWC has the lowest adsorption capacity that may be due it is positively charged at pH 7 which would favor the adsorption of negatively charged species instead of positively charged species, NH4+.
published_date 2020-06-02T04:06:57Z
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score 11.013148

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