Analysis of Leaching Rate of Heavy Metals from Fly Ash at Varying Leachant pH & Cumulative Liquid to Solid Ratios
Fly ash (FA) is a particulate matter consisting of finely divided, non-combustible particles obtained from the flue gases arising from combustion of coal, accounts for over 80% of the total ash produced during coal combustion. In 2018 alone, about 780 million tons of FA has been generated globally...
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i-manager’s Journal on Material Science
2021
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| Online Access: | http://hdl.handle.net/20.500.12493/483 |
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| author | Tobby, Micheal Agwe Sharma, S. N. Pandey, Govind |
| author_facet | Tobby, Micheal Agwe Sharma, S. N. Pandey, Govind |
| author_sort | Tobby, Micheal Agwe |
| collection | KAB-DR |
| description | Fly ash (FA) is a particulate matter consisting of finely divided, non-combustible particles obtained from the flue gases
arising from combustion of coal, accounts for over 80% of the total ash produced during coal combustion. In 2018 alone,
about 780 million tons of FA has been generated globally, of which voluminous quantity remained unutilized, hence
dumped into the environment. This continued disposal of FA into the environment makes the heavy metals contained
therein to move out in the leachate generated, polluting the soil, surface and ground water sources among others. In this
study, 5 sets of leaching test columns were packed with an equal quantity of air dried fly ash samples and each of them
leached with leachant of pH 5.87, 6.08, 6.41, 6.46 and 7.01 and eluate from each column collected at cumulative liquid
to solid (L/S) ratios in l/kg of 0.1, 0.2, 0.5, 1.0 and 2.0. Analysis of the eluate for Copper (Cu), Selenium (Se), Zinc (Zn),
Cadmium (Cd), Lead (Pb), Nickel (Ni), Chromium (Cr) and Arsenic (As), revealed that the concentrations of Se at Selenium
L/S of 0.1 for leachant pH of 5.87, 6.41 and 7.01, exceeded the allowable limits for non-hazardous wastes disposal into the
landfills. |
| format | Article |
| id | oai:idr.kab.ac.ug:20.500.12493-483 |
| institution | KAB-DR |
| publishDate | 2021 |
| publisher | i-manager’s Journal on Material Science |
| record_format | dspace |
| spelling | oai:idr.kab.ac.ug:20.500.12493-4832024-01-17T04:45:58Z Analysis of Leaching Rate of Heavy Metals from Fly Ash at Varying Leachant pH & Cumulative Liquid to Solid Ratios Tobby, Micheal Agwe Sharma, S. N. Pandey, Govind Eluate, Fly Ash, Heavy Metals, Leaching, Leachant, Liquid to Solid Ratio, pH. Fly ash (FA) is a particulate matter consisting of finely divided, non-combustible particles obtained from the flue gases arising from combustion of coal, accounts for over 80% of the total ash produced during coal combustion. In 2018 alone, about 780 million tons of FA has been generated globally, of which voluminous quantity remained unutilized, hence dumped into the environment. This continued disposal of FA into the environment makes the heavy metals contained therein to move out in the leachate generated, polluting the soil, surface and ground water sources among others. In this study, 5 sets of leaching test columns were packed with an equal quantity of air dried fly ash samples and each of them leached with leachant of pH 5.87, 6.08, 6.41, 6.46 and 7.01 and eluate from each column collected at cumulative liquid to solid (L/S) ratios in l/kg of 0.1, 0.2, 0.5, 1.0 and 2.0. Analysis of the eluate for Copper (Cu), Selenium (Se), Zinc (Zn), Cadmium (Cd), Lead (Pb), Nickel (Ni), Chromium (Cr) and Arsenic (As), revealed that the concentrations of Se at Selenium L/S of 0.1 for leachant pH of 5.87, 6.41 and 7.01, exceeded the allowable limits for non-hazardous wastes disposal into the landfills. Kabale University 2021-05-12T16:17:33Z 2021-05-12T16:17:33Z 2020 Article http://hdl.handle.net/20.500.12493/483 application/pdf i-manager’s Journal on Material Science |
| spellingShingle | Eluate, Fly Ash, Heavy Metals, Leaching, Leachant, Liquid to Solid Ratio, pH. Tobby, Micheal Agwe Sharma, S. N. Pandey, Govind Analysis of Leaching Rate of Heavy Metals from Fly Ash at Varying Leachant pH & Cumulative Liquid to Solid Ratios |
| title | Analysis of Leaching Rate of Heavy Metals from Fly Ash at Varying Leachant pH & Cumulative Liquid to Solid Ratios |
| title_full | Analysis of Leaching Rate of Heavy Metals from Fly Ash at Varying Leachant pH & Cumulative Liquid to Solid Ratios |
| title_fullStr | Analysis of Leaching Rate of Heavy Metals from Fly Ash at Varying Leachant pH & Cumulative Liquid to Solid Ratios |
| title_full_unstemmed | Analysis of Leaching Rate of Heavy Metals from Fly Ash at Varying Leachant pH & Cumulative Liquid to Solid Ratios |
| title_short | Analysis of Leaching Rate of Heavy Metals from Fly Ash at Varying Leachant pH & Cumulative Liquid to Solid Ratios |
| title_sort | analysis of leaching rate of heavy metals from fly ash at varying leachant ph cumulative liquid to solid ratios |
| topic | Eluate, Fly Ash, Heavy Metals, Leaching, Leachant, Liquid to Solid Ratio, pH. |
| url | http://hdl.handle.net/20.500.12493/483 |
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