Details
| Original language | English |
|---|---|
| Pages (from-to) | 143-153 |
| Number of pages | 11 |
| Journal | Clays and clay minerals |
| Volume | 67 |
| Issue number | 2 |
| Publication status | Published - 15 Apr 2019 |
Abstract
The conventional method of zeolite synthesis involves an expensive hydrothermal step whereby a mixture of a metakaolinite, sodium hydroxide, and water is preactivated by thermal treatment between 400°C and 1000°C. The objective of the current study was to determine whether Jordanian kaolinite could be converted to zeolite materials without thermal pre-activation. The alkaline hydrothermal transformation of kaolinite into hydroxysodalite (HS) was achieved, then followed by a reaction with citric acid and solid sodium hydroxide to obtain Zeolite A, or by adding solid Na2SiO3 to prepare zeolite X. These materials were tested for their ability to serve as removal agents for Basic Blue 41 (BB-41) dye from artificially contaminated water, at concentrations ranging from 25 to 1000 mg/L. The maximum removal capacities were estimated using the Langmuir model, with a value of 39 mg/g for hydroxysodalite. Zeolite-X achieved the lowest value (19 mg/g). The feasibility of BB-41 removal was deduced from the Freundlich model for the zeolites studied. The reported low-cost method is proposed as an alternative way to reduce the cost of synthesizing zeolite, and the materials were shown to be potential candidates for the removal of BB-41 dye.
Keywords
- Basic Blue 41, Jordanian Kaolin, Removal, Zeolite A, Zeolite X
ASJC Scopus subject areas
- Environmental Science(all)
- Water Science and Technology
- Agricultural and Biological Sciences(all)
- Soil Science
- Earth and Planetary Sciences(all)
- Geochemistry and Petrology
- Earth and Planetary Sciences(all)
- Earth and Planetary Sciences (miscellaneous)
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In: Clays and clay minerals, Vol. 67, No. 2, 15.04.2019, p. 143-153.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Removal Efficiency of Basic Blue 41 by Three Zeolites Prepared from Natural Jordanian Kaolin
AU - Gougazeh, Mousa
AU - Kooli, Fethi
AU - Buhl, Josef-Christian
N1 - Funding information: The authors are grateful to the Tafila Technical University (TTU), Jordan for technical support of this research work. Special thanks are due to the Institute of Mineralogy, Leibniz University, Hannover, Germany, for allowing the use of research facilities. Thanks also to Prof. Dr. C. Ruscher, Dr. Lars Robben, and Dipl. Geow. Valeriy Petrov for assistance with the acquisition of FTIR and SEM data.
PY - 2019/4/15
Y1 - 2019/4/15
N2 - The conventional method of zeolite synthesis involves an expensive hydrothermal step whereby a mixture of a metakaolinite, sodium hydroxide, and water is preactivated by thermal treatment between 400°C and 1000°C. The objective of the current study was to determine whether Jordanian kaolinite could be converted to zeolite materials without thermal pre-activation. The alkaline hydrothermal transformation of kaolinite into hydroxysodalite (HS) was achieved, then followed by a reaction with citric acid and solid sodium hydroxide to obtain Zeolite A, or by adding solid Na2SiO3 to prepare zeolite X. These materials were tested for their ability to serve as removal agents for Basic Blue 41 (BB-41) dye from artificially contaminated water, at concentrations ranging from 25 to 1000 mg/L. The maximum removal capacities were estimated using the Langmuir model, with a value of 39 mg/g for hydroxysodalite. Zeolite-X achieved the lowest value (19 mg/g). The feasibility of BB-41 removal was deduced from the Freundlich model for the zeolites studied. The reported low-cost method is proposed as an alternative way to reduce the cost of synthesizing zeolite, and the materials were shown to be potential candidates for the removal of BB-41 dye.
AB - The conventional method of zeolite synthesis involves an expensive hydrothermal step whereby a mixture of a metakaolinite, sodium hydroxide, and water is preactivated by thermal treatment between 400°C and 1000°C. The objective of the current study was to determine whether Jordanian kaolinite could be converted to zeolite materials without thermal pre-activation. The alkaline hydrothermal transformation of kaolinite into hydroxysodalite (HS) was achieved, then followed by a reaction with citric acid and solid sodium hydroxide to obtain Zeolite A, or by adding solid Na2SiO3 to prepare zeolite X. These materials were tested for their ability to serve as removal agents for Basic Blue 41 (BB-41) dye from artificially contaminated water, at concentrations ranging from 25 to 1000 mg/L. The maximum removal capacities were estimated using the Langmuir model, with a value of 39 mg/g for hydroxysodalite. Zeolite-X achieved the lowest value (19 mg/g). The feasibility of BB-41 removal was deduced from the Freundlich model for the zeolites studied. The reported low-cost method is proposed as an alternative way to reduce the cost of synthesizing zeolite, and the materials were shown to be potential candidates for the removal of BB-41 dye.
KW - Basic Blue 41
KW - Jordanian Kaolin
KW - Removal
KW - Zeolite A
KW - Zeolite X
UR - http://www.scopus.com/inward/record.url?scp=85063736800&partnerID=8YFLogxK
U2 - 10.1007/s42860-019-00016-1
DO - 10.1007/s42860-019-00016-1
M3 - Article
AN - SCOPUS:85063736800
VL - 67
SP - 143
EP - 153
JO - Clays and clay minerals
JF - Clays and clay minerals
SN - 0009-8604
IS - 2
ER -