Abdelaal, A., Abdelmawla, M., Beheary, M., Abdullah, N., Razek, T. (2020). Immobilization of Some Heavy Metals in Geopolymer Based on Water Treatment Sludge and Alum Industry Solid Waste. test, 1(2), 137-147. doi: 10.21608/ajbas.2020.28829.1014
Ahmed Abdelaal; Mohammed Abdelmawla; Mokhtar S. Beheary; Nabil A. Abdullah; Taha M.A. Razek. "Immobilization of Some Heavy Metals in Geopolymer Based on Water Treatment Sludge and Alum Industry Solid Waste". test, 1, 2, 2020, 137-147. doi: 10.21608/ajbas.2020.28829.1014
Abdelaal, A., Abdelmawla, M., Beheary, M., Abdullah, N., Razek, T. (2020). 'Immobilization of Some Heavy Metals in Geopolymer Based on Water Treatment Sludge and Alum Industry Solid Waste', test, 1(2), pp. 137-147. doi: 10.21608/ajbas.2020.28829.1014
Abdelaal, A., Abdelmawla, M., Beheary, M., Abdullah, N., Razek, T. Immobilization of Some Heavy Metals in Geopolymer Based on Water Treatment Sludge and Alum Industry Solid Waste. test, 2020; 1(2): 137-147. doi: 10.21608/ajbas.2020.28829.1014

Immobilization of Some Heavy Metals in Geopolymer Based on Water Treatment Sludge and Alum Industry Solid Waste

Alfarama Journal of Basic & Applied Sciences
Article 8, Volume 1, Issue 2, July 2020, Pages 137-147    PDF (564.77 K)
Document Type: Original Article
DOI: 10.21608/ajbas.2020.28829.1014
Authors
Ahmed Abdelaal* 1; Mohammed Abdelmawla1; Mokhtar S. Beheary1; Nabil A. Abdullah2; Taha M.A. Razek3
1Environmental Sciences Department, Faculty of Science, Port Said University, Port Said, Egypt
2R&D Director Aluminum Sulfate Co. of Egypt
3Institute of Environmental Studies and Researches, Ain Shams University, Cairo, Egypt
Abstract
This paper investigates the immobilization behaviors of Cd2+, Pb2+ and Hg2+ ions in a geopolymer based on water treatment sludge (WTS) and dealuminated metakaolin (DaMK) solid waste from alum industry. For synthesis of WTS/DaMK based geopolymer, five mixes of WTS/DaMK (75/25, 80/20, 85/15, 90/10 and 95/5, respectively) are tested to obtain the optimum synthesis condition based on the compressive strength. Results showed that the geopolymer mortar with 85/15WTS/DaMK has the highest compressive strength (8 MPa). In addition, X-ray Diffraction (XRD) and X-ray Fluorescence (XRF) techniques are used to characterize the mineral and chemical compositions of WTS and DaMK. WTS/DaMK based geopolymer mortar have been tested for leaching to study its immobilization behavior under the optimum condition. The Cd2+, Pb2+ and Hg2+ ions were used and effectively immobilized in this study. The heavy metals with concentrations of 100, 200 and 300 ppm were used in the geopolymer matrix giving about 98% of immobilization efficiency. The study showed that Pb2+ has the best immobilization efficiency followed by Hg2+ and Cd2+ with high concentrations.
Keywords
Geopolymer; dealuminated metakaolin; water treatment sludge; Heavy metals; immobilization
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