Methylene Blue Adsorption by Chemically Foamed Geopolymer Based on Fly Ash
WATER, AIR AND SOIL POLLUTION : AN INTERNATIONAL JOURNAL OF ENVIRONMENTAL POLLUTION, cilt.234, ss.1-11, 2023 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 234
- Basım Tarihi: 2023
- Doi Numarası: 10.1007/s11270-023-06315-7
- Dergi Adı: WATER, AIR AND SOIL POLLUTION : AN INTERNATIONAL JOURNAL OF ENVIRONMENTAL POLLUTION
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, ABI/INFORM, Agricultural & Environmental Science Database, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), Artic & Antarctic Regions, BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, Chimica, Compendex, EMBASE, Environment Index, Geobase, Greenfile, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
- Sayfa Sayıları: ss.1-11
- Yıldız Teknik Üniversitesi Adresli: Evet
Özet
The storage and disposal of fy ash, which
is generated as an industrial waste of thermal power
plants, is a challenging process, as is the case with
all wastes. In this study, it is aimed to obtain a useful product for methylene blue adsorption by using
fy ash in the production of foamed geopolymer. Geopolymers, which were obtained by doping Zn and Al
metals, were cured in 2 diferent environments, at
room conditions and at room conditions with pre-curing at 80 °C. NaOH and Na2SiO3 solutions were used
for geopolymerization. X-ray fuorescence spectroscopy (XRF), Fourier transform infrared spectroscopy
(FTIR), Brunauer, Emmet, and Teller surface area
analysis (BET), and X-ray difraction (XRD) analysis
were applied for the characterization of fy ash and
geopolymers. It was observed that optimum geopolymer sample produced has 27.355 m2
/g surface area.
Langmuir isotherm (R2=0.9962) was the most suitable adsorption isotherm in adsorption studies with the
optimum geopolymer sample. The highest adsorption
efciency was obtained 97.4% in 50 ppm solution. As
a result, it was observed that the geopolymer surface
area could be increased by using chemical foaming
method and obtained geopolymer could be successfully used for methylene blue adsorption