Alkali-treated fly ash for the removal of fluoride from aqueous solutions
In the batch study, the adsorption performance of calcium hydroxide-fly ash (CFA) in the fluoride removal from aqueous solution was investigated. The effects of various adsorption controlling parameters such as contact time, dosage, solution pH, temperature, and agitation speed on fluoride removal w...
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| Veröffentlicht in: | Desalination and water treatment 2014-05, Vol.52 (19-21), p.3466-3476 |
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| container_title | Desalination and water treatment |
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| creator | Geethamani, C.K. Ramesh, S.T. Gandhimathi, R. Nidheesh, P.V. |
| description | In the batch study, the adsorption performance of calcium hydroxide-fly ash (CFA) in the fluoride removal from aqueous solution was investigated. The effects of various adsorption controlling parameters such as contact time, dosage, solution pH, temperature, and agitation speed on fluoride removal was analyzed. Eighty-nine percent of fluoride was removed by CFA at solution temperature of 50°C. The kinetic studies and isotherm studies were also performed to understand the sorption ability of CFA. The monolayer adsorption capacity from the Langmuir adsorption equation was found as 10.86 mg/g. Kinetic measurements suggested the involvement of pseudo-second-order kinetics in adsorption. It also suggested that particle diffusion process is not only a rate controlling step process. Overall, the present study showed that the adsorbent is environmental friendly, efficient, and a low-cost adsorbent which is useful for the removal of fluoride from aqueous solution. |
| doi_str_mv | 10.1080/19443994.2013.800825 |
| format | Article |
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The effects of various adsorption controlling parameters such as contact time, dosage, solution pH, temperature, and agitation speed on fluoride removal was analyzed. Eighty-nine percent of fluoride was removed by CFA at solution temperature of 50°C. The kinetic studies and isotherm studies were also performed to understand the sorption ability of CFA. The monolayer adsorption capacity from the Langmuir adsorption equation was found as 10.86 mg/g. Kinetic measurements suggested the involvement of pseudo-second-order kinetics in adsorption. It also suggested that particle diffusion process is not only a rate controlling step process. 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Overall, the present study showed that the adsorbent is environmental friendly, efficient, and a low-cost adsorbent which is useful for the removal of fluoride from aqueous solution.</description><subject>Adsorbents</subject><subject>Adsorption</subject><subject>Alkali-treated fly ash</subject><subject>Aqueous solutions</subject><subject>Batch study</subject><subject>Fluorides</subject><subject>Fly ash</subject><subject>Isotherms</subject><subject>Kinetic study</subject><subject>Mathematical analysis</subject><subject>Slaked lime</subject><subject>Sorption</subject><issn>1944-3986</issn><issn>1944-3994</issn><issn>1944-3986</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqNUE1LAzEQXUTBUvsPPOToZWu-d3MRSvELCl70HLKbCY2mTU12C_337rIKnsS5zDDz3uPNK4prgpcE1_iWKM6ZUnxJMWHLGuOairNiNq5Lpmp5_mu-LBY5v-OhBK8Ep7PieRU-TPBll8B0YJELJ2TyFrmYULcFlGAXjyag6IZTH5O3gFyKO2Q-e4h9RjmGvvNxn6-KC2dChsV3nxdvD_ev66dy8_L4vF5typZVtCsFIw2vDQw-nXRN01IQCqhSqq2JsZWtJW6oAMaxVcRKQcFIjF1jKk6U4Gxe3Ey6hxQHD7nTO59bCMHsR0Oa1ExIXklJ_wElQiop2KjKJ2ibYs4JnD4kvzPppAnWY876J2c95qynnAfa3USD4eOjh6Rz62HfgvUJ2k7b6P8W-AJ92oKW</recordid><startdate>20140501</startdate><enddate>20140501</enddate><creator>Geethamani, C.K.</creator><creator>Ramesh, S.T.</creator><creator>Gandhimathi, R.</creator><creator>Nidheesh, P.V.</creator><general>Elsevier Inc</general><scope>6I.</scope><scope>AAFTH</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QH</scope><scope>7QO</scope><scope>7ST</scope><scope>7TN</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H96</scope><scope>H97</scope><scope>L.G</scope><scope>P64</scope><scope>SOI</scope><scope>KR7</scope></search><sort><creationdate>20140501</creationdate><title>Alkali-treated fly ash for the removal of fluoride from aqueous solutions</title><author>Geethamani, C.K. ; Ramesh, S.T. ; Gandhimathi, R. ; Nidheesh, P.V.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c372t-531b48ae008f6fbbc2e59e2999c81ad7d860b25e340d91d652ea600fba7419543</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Adsorbents</topic><topic>Adsorption</topic><topic>Alkali-treated fly ash</topic><topic>Aqueous solutions</topic><topic>Batch study</topic><topic>Fluorides</topic><topic>Fly ash</topic><topic>Isotherms</topic><topic>Kinetic study</topic><topic>Mathematical analysis</topic><topic>Slaked lime</topic><topic>Sorption</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Geethamani, C.K.</creatorcontrib><creatorcontrib>Ramesh, S.T.</creatorcontrib><creatorcontrib>Gandhimathi, R.</creatorcontrib><creatorcontrib>Nidheesh, P.V.</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>CrossRef</collection><collection>Aqualine</collection><collection>Biotechnology Research Abstracts</collection><collection>Environment Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><collection>Civil Engineering Abstracts</collection><jtitle>Desalination and water treatment</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Geethamani, C.K.</au><au>Ramesh, S.T.</au><au>Gandhimathi, R.</au><au>Nidheesh, P.V.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Alkali-treated fly ash for the removal of fluoride from aqueous solutions</atitle><jtitle>Desalination and water treatment</jtitle><date>2014-05-01</date><risdate>2014</risdate><volume>52</volume><issue>19-21</issue><spage>3466</spage><epage>3476</epage><pages>3466-3476</pages><issn>1944-3986</issn><issn>1944-3994</issn><eissn>1944-3986</eissn><abstract>In the batch study, the adsorption performance of calcium hydroxide-fly ash (CFA) in the fluoride removal from aqueous solution was investigated. The effects of various adsorption controlling parameters such as contact time, dosage, solution pH, temperature, and agitation speed on fluoride removal was analyzed. Eighty-nine percent of fluoride was removed by CFA at solution temperature of 50°C. The kinetic studies and isotherm studies were also performed to understand the sorption ability of CFA. The monolayer adsorption capacity from the Langmuir adsorption equation was found as 10.86 mg/g. Kinetic measurements suggested the involvement of pseudo-second-order kinetics in adsorption. It also suggested that particle diffusion process is not only a rate controlling step process. Overall, the present study showed that the adsorbent is environmental friendly, efficient, and a low-cost adsorbent which is useful for the removal of fluoride from aqueous solution.</abstract><pub>Elsevier Inc</pub><doi>10.1080/19443994.2013.800825</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 1944-3986 |
| ispartof | Desalination and water treatment, 2014-05, Vol.52 (19-21), p.3466-3476 |
| issn | 1944-3986 1944-3994 1944-3986 |
| language | eng |
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| source | Alma/SFX Local Collection |
| subjects | Adsorbents Adsorption Alkali-treated fly ash Aqueous solutions Batch study Fluorides Fly ash Isotherms Kinetic study Mathematical analysis Slaked lime Sorption |
| title | Alkali-treated fly ash for the removal of fluoride from aqueous solutions |
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