Adsorptive capacity of spray-dried pH-treated bentonite and kaolin powders for ammonium removal

Adsorptive capacity of spray-dried pH-treated bentonite and kaolin powders for ammonium removal

The effectiveness of ammonium (NH4+) adsorption was investigated, using spray-dried, pH-treated bentonite, and kaolin as adsorbents. Each powder's adsorption capacity towards NH4+ was examined after up to 120 min of sample exposure, and results were compared. The zeta potential values for bento...

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Published in:Advanced Powder Technology
Main Author: Zaini N.S.M.; Lenggoro I.W.; Naim M.N.; Yoshida N.; Man H.C.; Bakar N.F.A.; Puasa S.W.
Format: Article
Language:English
Published: Elsevier B.V. 2021
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104315158&doi=10.1016%2fj.apt.2021.02.036&partnerID=40&md5=9ac7dc6271e3b28d19dd202a5830471c
id 2-s2.0-85104315158
spelling 2-s2.0-85104315158
Zaini N.S.M.; Lenggoro I.W.; Naim M.N.; Yoshida N.; Man H.C.; Bakar N.F.A.; Puasa S.W.
Adsorptive capacity of spray-dried pH-treated bentonite and kaolin powders for ammonium removal
2021
Advanced Powder Technology
32
6
10.1016/j.apt.2021.02.036
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104315158&doi=10.1016%2fj.apt.2021.02.036&partnerID=40&md5=9ac7dc6271e3b28d19dd202a5830471c
The effectiveness of ammonium (NH4+) adsorption was investigated, using spray-dried, pH-treated bentonite, and kaolin as adsorbents. Each powder's adsorption capacity towards NH4+ was examined after up to 120 min of sample exposure, and results were compared. The zeta potential values for bentonite samples were between −1.1 and −19.4 mV, while for kaolin samples, they were between −35.7 and −40.9 mV (pH range examined was 2–10). The adsorption isotherm for bentonite showed a fit with the Langmuir model. The pH 10-treated bentonite and as-received bentonite (dispersed as pH 10 in distilled water) showed the highest adsorption capacity towards NH4+. Meanwhile, for kaolin, the adsorption capacity was low and observed only at low NH4+ concentration (100 mg/L and 200 mg/L), with pH 10-treated kaolin showed the highest adsorption capacity. © 2021 Society of Powder Technology Japan
Elsevier B.V.
09218831
English
Article
author Zaini N.S.M.; Lenggoro I.W.; Naim M.N.; Yoshida N.; Man H.C.; Bakar N.F.A.; Puasa S.W.
spellingShingle Zaini N.S.M.; Lenggoro I.W.; Naim M.N.; Yoshida N.; Man H.C.; Bakar N.F.A.; Puasa S.W.
Adsorptive capacity of spray-dried pH-treated bentonite and kaolin powders for ammonium removal
author_facet Zaini N.S.M.; Lenggoro I.W.; Naim M.N.; Yoshida N.; Man H.C.; Bakar N.F.A.; Puasa S.W.
author_sort Zaini N.S.M.; Lenggoro I.W.; Naim M.N.; Yoshida N.; Man H.C.; Bakar N.F.A.; Puasa S.W.
title Adsorptive capacity of spray-dried pH-treated bentonite and kaolin powders for ammonium removal
title_short Adsorptive capacity of spray-dried pH-treated bentonite and kaolin powders for ammonium removal
title_full Adsorptive capacity of spray-dried pH-treated bentonite and kaolin powders for ammonium removal
title_fullStr Adsorptive capacity of spray-dried pH-treated bentonite and kaolin powders for ammonium removal
title_full_unstemmed Adsorptive capacity of spray-dried pH-treated bentonite and kaolin powders for ammonium removal
title_sort Adsorptive capacity of spray-dried pH-treated bentonite and kaolin powders for ammonium removal
publishDate 2021
container_title Advanced Powder Technology
container_volume 32
container_issue 6
doi_str_mv 10.1016/j.apt.2021.02.036
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104315158&doi=10.1016%2fj.apt.2021.02.036&partnerID=40&md5=9ac7dc6271e3b28d19dd202a5830471c
description The effectiveness of ammonium (NH4+) adsorption was investigated, using spray-dried, pH-treated bentonite, and kaolin as adsorbents. Each powder's adsorption capacity towards NH4+ was examined after up to 120 min of sample exposure, and results were compared. The zeta potential values for bentonite samples were between −1.1 and −19.4 mV, while for kaolin samples, they were between −35.7 and −40.9 mV (pH range examined was 2–10). The adsorption isotherm for bentonite showed a fit with the Langmuir model. The pH 10-treated bentonite and as-received bentonite (dispersed as pH 10 in distilled water) showed the highest adsorption capacity towards NH4+. Meanwhile, for kaolin, the adsorption capacity was low and observed only at low NH4+ concentration (100 mg/L and 200 mg/L), with pH 10-treated kaolin showed the highest adsorption capacity. © 2021 Society of Powder Technology Japan
publisher Elsevier B.V.
issn 09218831
language English
format Article
accesstype
record_format scopus
collection Scopus
_version_ 1820775460987994112

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