Extraction of Water Treatment Coagulant from Locally Abundant Kaolin Clays
Rapid industrialisation is contributing to water pollution. There is a need to identify cheaper and efficient methods of removing contaminants as the demand for clean water rises. A study is carried out to investigate the extraction of alum from locally abundant kaolin clays using sulphuric acid. Al...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2015/705837 |
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| author | Fidelis Chigondo Benias Chomunorwa Nyamunda Vuyo Bhebhe |
| author_facet | Fidelis Chigondo Benias Chomunorwa Nyamunda Vuyo Bhebhe |
| author_sort | Fidelis Chigondo |
| collection | DOAJ |
| description | Rapid industrialisation is contributing to water pollution. There is a need to identify cheaper and efficient methods of removing contaminants as the demand for clean water rises. A study is carried out to investigate the extraction of alum from locally abundant kaolin clays using sulphuric acid. Alum is a coagulant that is used for raw water treatment. The kaolin clay and alum were characterized by Fourier transformation infrared spectroscopy (FTIR). The effects of particle size, calcination temperature, calcination time, acid-kaolin clay ratio, acid concentration, leaching temperature, and leaching time on extraction efficiency were investigated. The optimum leaching conditions for the calcined kaolin clay were found to be particle size 100 µm, acid-kaolin clay weight ratio 6 : 1, acid concentration 4 M, leaching temperature 100°C, and leaching time 90 min. Under optimised conditions, 66.95% (w/w) aluminum sulphate was extracted. The results showed that sulphuric acid could be used on a large scale to extract alum from kaolin clay. The extracted alum showed similar structural and physical characteristics compared with commercial alum. A dosage of 40 mg/L of the extracted alum showed effective coagulant properties with a great potential of treating raw water. |
| format | Article |
| id | doaj-art-5ba289838ede4fc9a680046d1d7a4304 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-5ba289838ede4fc9a680046d1d7a43042025-02-03T05:46:35ZengWileyJournal of Chemistry2090-90632090-90712015-01-01201510.1155/2015/705837705837Extraction of Water Treatment Coagulant from Locally Abundant Kaolin ClaysFidelis Chigondo0Benias Chomunorwa Nyamunda1Vuyo Bhebhe2Department of Chemical Technology, Midlands State University, Private Bag Box 9055, Gweru, ZimbabweDepartment of Chemical and Processing Engineering, Manicaland College of Applied Sciences, Private Bag Box 9055, Gweru, ZimbabweDepartment of Chemical Technology, Midlands State University, Private Bag Box 9055, Gweru, ZimbabweRapid industrialisation is contributing to water pollution. There is a need to identify cheaper and efficient methods of removing contaminants as the demand for clean water rises. A study is carried out to investigate the extraction of alum from locally abundant kaolin clays using sulphuric acid. Alum is a coagulant that is used for raw water treatment. The kaolin clay and alum were characterized by Fourier transformation infrared spectroscopy (FTIR). The effects of particle size, calcination temperature, calcination time, acid-kaolin clay ratio, acid concentration, leaching temperature, and leaching time on extraction efficiency were investigated. The optimum leaching conditions for the calcined kaolin clay were found to be particle size 100 µm, acid-kaolin clay weight ratio 6 : 1, acid concentration 4 M, leaching temperature 100°C, and leaching time 90 min. Under optimised conditions, 66.95% (w/w) aluminum sulphate was extracted. The results showed that sulphuric acid could be used on a large scale to extract alum from kaolin clay. The extracted alum showed similar structural and physical characteristics compared with commercial alum. A dosage of 40 mg/L of the extracted alum showed effective coagulant properties with a great potential of treating raw water.http://dx.doi.org/10.1155/2015/705837 |
| spellingShingle | Fidelis Chigondo Benias Chomunorwa Nyamunda Vuyo Bhebhe Extraction of Water Treatment Coagulant from Locally Abundant Kaolin Clays Journal of Chemistry |
| title | Extraction of Water Treatment Coagulant from Locally Abundant Kaolin Clays |
| title_full | Extraction of Water Treatment Coagulant from Locally Abundant Kaolin Clays |
| title_fullStr | Extraction of Water Treatment Coagulant from Locally Abundant Kaolin Clays |
| title_full_unstemmed | Extraction of Water Treatment Coagulant from Locally Abundant Kaolin Clays |
| title_short | Extraction of Water Treatment Coagulant from Locally Abundant Kaolin Clays |
| title_sort | extraction of water treatment coagulant from locally abundant kaolin clays |
| url | http://dx.doi.org/10.1155/2015/705837 |
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