Effect of Hydroxyl Aluminum Ratio on Preparation of PAC from Aluminum Ash

Yikun Zhao, Hui Yuan, Yongdong He, Changke Cheng

2022

Abstract

The oligomeric polymeric aluminum chloride prepared from secondary aluminum ash was used as raw material, and hydrolytic polymerization was carried out with different ratios of calcium oxide, and the structure and phase transformation process of the polymeric aluminum chloride produced by hydrolytic polymerization were characterized by XRD and infrared spectroscopy. The results showed that at the hydroxyl-aluminum ratio of 0.25, the phases of hydrolysis polymerization products were Al(OH)3, AlOCl, AlCl3-6H2O, Ca3Al2(OH)12; at the hydroxyl-aluminum ratio of 0.5, the main phases were Al(OH)3, AlO(OH), AlCl3-6H2O, Ca3Al(OH)7-3H2O, Ca3Al2(O4H4), the main phase is AlCl3-6H2O, ((Al13(OH)24(H2O)24))Cl15(H2O)13 when the hydroxyl-aluminum ratio is 0.75, and the polymeric ((Al13(OH)24(H2O)24))Cl15(H2O)13 molecules account for 70.4%, When the hydroxy-aluminum ratio is 1, the main phase is indeterminate; A large amount of OH- appears in the prepared high polymer polyaluminum chloride molecule, and the peak height of the absorption peak of Al-OH-Al can also indicate that there are a large number of Al-OH-Al bonds in the sample, which proves that the polyaluminum chloride contains a large number of Al-OH-Al bonds. There are ((Al13(OH)24(H2O)24))Cl15(H2O)13 molecules.

Paper Citation

in Harvard Style

Zhao Y., Yuan H., He Y. and Cheng C. (2022). Effect of Hydroxyl Aluminum Ratio on Preparation of PAC from Aluminum Ash. In Proceedings of the 3rd International Symposium on Water, Ecology and Environment - Volume 1: ISWEE; ISBN 978-989-758-639-2, SciTePress, pages 106-110. DOI: 10.5220/0011918300003536

in Bibtex Style

@conference{iswee22,
author={Yikun Zhao and Hui Yuan and Yongdong He and Changke Cheng},
title={Effect of Hydroxyl Aluminum Ratio on Preparation of PAC from Aluminum Ash},
booktitle={Proceedings of the 3rd International Symposium on Water, Ecology and Environment - Volume 1: ISWEE},
year={2022},
pages={106-110},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0011918300003536},
isbn={978-989-758-639-2},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 3rd International Symposium on Water, Ecology and Environment - Volume 1: ISWEE
TI - Effect of Hydroxyl Aluminum Ratio on Preparation of PAC from Aluminum Ash
SN - 978-989-758-639-2
AU - Zhao Y.
AU - Yuan H.
AU - He Y.
AU - Cheng C.
PY - 2022
SP - 106
EP - 110
DO - 10.5220/0011918300003536
PB - SciTePress