Eggshell-Derived Nanohydroxyapatite Adsorbent for Defluoridation of Drinking Water from Bofo of Ethiopia
Fluoride has become a notable toxicological environmental hazard worldwide because it is often found in groundwater. In the present study, hydroxyapatite adsorbent was synthesized from eggshell waste to remove fluoride from aqueous solution. XRD, FT-IR, and TGA techniques were used to characterize t...
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| Veröffentlicht in: | Journal of nanomaterials 2019, Vol.2019 (2019), p.1-12 |
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| creator | Eswaramoorthy, Rajalakshmanan Abdo Seghne, Teshome Zereffa, Enyew Amare Workeneh, Kifle |
| description | Fluoride has become a notable toxicological environmental hazard worldwide because it is often found in groundwater. In the present study, hydroxyapatite adsorbent was synthesized from eggshell waste to remove fluoride from aqueous solution. XRD, FT-IR, and TGA techniques were used to characterize the prepared adsorbent. Batch adsorption studies were performed to examine the adsorption capacity of hydroxyapatite such as the effect of the initial pH of the solution, contact time, adsorbent dose, and initial fluoride concentration. The fluoride ion-selective electrode was used to determine the fluoride removal efficiency. 98.8% of fluoride was removed at pH 3.0, but at pH ~7.0, 85% of fluoride was removed; it shows that the fluoride adsorption is pH dependent. The adsorption isotherm studies (Langmuir and Freundlich models) and the experimental results for the removal of fluoride showed that the Langmuir model was more favorable and the reaction followed pseudo-second-order kinetics. In real water samples, the prepared hydroxyapatite derived from eggshell exhibited 81% removal efficiency. Our results indicate that eggshell waste-derived hydroxyapatite may be an alternative source for defluoridation in developing countries. |
| doi_str_mv | 10.1155/2019/2458312 |
| format | Article |
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In the present study, hydroxyapatite adsorbent was synthesized from eggshell waste to remove fluoride from aqueous solution. XRD, FT-IR, and TGA techniques were used to characterize the prepared adsorbent. Batch adsorption studies were performed to examine the adsorption capacity of hydroxyapatite such as the effect of the initial pH of the solution, contact time, adsorbent dose, and initial fluoride concentration. The fluoride ion-selective electrode was used to determine the fluoride removal efficiency. 98.8% of fluoride was removed at pH 3.0, but at pH ~7.0, 85% of fluoride was removed; it shows that the fluoride adsorption is pH dependent. The adsorption isotherm studies (Langmuir and Freundlich models) and the experimental results for the removal of fluoride showed that the Langmuir model was more favorable and the reaction followed pseudo-second-order kinetics. In real water samples, the prepared hydroxyapatite derived from eggshell exhibited 81% removal efficiency. Our results indicate that eggshell waste-derived hydroxyapatite may be an alternative source for defluoridation in developing countries.</description><identifier>ISSN: 1687-4110</identifier><identifier>EISSN: 1687-4129</identifier><identifier>DOI: 10.1155/2019/2458312</identifier><language>eng</language><publisher>Cairo, Egypt: Hindawi Publishing Corporation</publisher><subject>Adsorbents ; Adsorption ; Aqueous solutions ; Chemical precipitation ; Composite materials ; Developing countries ; Drinking water ; Efficiency ; Environmental science ; Fluorides ; Groundwater ; Hazardous materials ; Hydroxyapatite ; LDCs ; Materials science ; Methods ; Nanomaterials ; Reaction kinetics ; Researchers</subject><ispartof>Journal of nanomaterials, 2019, Vol.2019 (2019), p.1-12</ispartof><rights>Copyright © 2019 Kifle Workeneh et al.</rights><rights>Copyright © 2019 Kifle Workeneh et al. This is an open access article distributed under the Creative Commons Attribution License (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. http://creativecommons.org/licenses/by/4.0</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c397t-264fa4afdc871338c6ab9e51d6b00080167fdaf344fb7c3a307c89a8cbc7d8ba3</citedby><cites>FETCH-LOGICAL-c397t-264fa4afdc871338c6ab9e51d6b00080167fdaf344fb7c3a307c89a8cbc7d8ba3</cites><orcidid>0000-0001-5334-9626 ; 0000-0002-8331-2100</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,4010,27900,27901,27902</link.rule.ids></links><search><contributor>Aich, Nirupam</contributor><contributor>Nirupam Aich</contributor><creatorcontrib>Eswaramoorthy, Rajalakshmanan</creatorcontrib><creatorcontrib>Abdo Seghne, Teshome</creatorcontrib><creatorcontrib>Zereffa, Enyew Amare</creatorcontrib><creatorcontrib>Workeneh, Kifle</creatorcontrib><title>Eggshell-Derived Nanohydroxyapatite Adsorbent for Defluoridation of Drinking Water from Bofo of Ethiopia</title><title>Journal of nanomaterials</title><description>Fluoride has become a notable toxicological environmental hazard worldwide because it is often found in groundwater. 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Our results indicate that eggshell waste-derived hydroxyapatite may be an alternative source for defluoridation in developing countries.</description><subject>Adsorbents</subject><subject>Adsorption</subject><subject>Aqueous solutions</subject><subject>Chemical precipitation</subject><subject>Composite materials</subject><subject>Developing countries</subject><subject>Drinking water</subject><subject>Efficiency</subject><subject>Environmental science</subject><subject>Fluorides</subject><subject>Groundwater</subject><subject>Hazardous materials</subject><subject>Hydroxyapatite</subject><subject>LDCs</subject><subject>Materials science</subject><subject>Methods</subject><subject>Nanomaterials</subject><subject>Reaction kinetics</subject><subject>Researchers</subject><issn>1687-4110</issn><issn>1687-4129</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>RHX</sourceid><sourceid>BENPR</sourceid><recordid>eNqF0MtLw0AQBvAgCtbqzbMseNTYfSTZzbG29QFFL4rHMNlHszXNxt1U7X9vSosePc3A92MGvig6J_iGkDQdUUzyEU1SwQg9iAYkEzxOCM0Pf3eCj6OTEJYYJ2me0kFUzRaLUOm6jqfa20-t0BM0rtoo77430EJnO43GKjhf6qZDxnk01aZeO29VH7oGOYOm3jbvtlmgN-i0R8a7Fbp1xm2zWVdZ11o4jY4M1EGf7ecwer2bvUwe4vnz_eNkPI8ly3kX0ywxkIBRUnDCmJAZlLlOicpKjLHAJONGgWFJYkouGTDMpchByFJyJUpgw-hyd7f17mOtQ1cs3do3_cuCUsGFSHOc9ep6p6R3IXhtitbbFfhNQXCx7bLYdlnsu-z51Y5XtlHwZf_TFzute6MN_GkiiKCc_QDMRH7X</recordid><startdate>2019</startdate><enddate>2019</enddate><creator>Eswaramoorthy, Rajalakshmanan</creator><creator>Abdo Seghne, Teshome</creator><creator>Zereffa, Enyew Amare</creator><creator>Workeneh, Kifle</creator><general>Hindawi Publishing Corporation</general><general>Hindawi</general><general>Hindawi Limited</general><scope>ADJCN</scope><scope>AHFXO</scope><scope>RHU</scope><scope>RHW</scope><scope>RHX</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>CWDGH</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>L7M</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><orcidid>https://orcid.org/0000-0001-5334-9626</orcidid><orcidid>https://orcid.org/0000-0002-8331-2100</orcidid></search><sort><creationdate>2019</creationdate><title>Eggshell-Derived Nanohydroxyapatite Adsorbent for Defluoridation of Drinking Water from Bofo of Ethiopia</title><author>Eswaramoorthy, Rajalakshmanan ; 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| subjects | Adsorbents Adsorption Aqueous solutions Chemical precipitation Composite materials Developing countries Drinking water Efficiency Environmental science Fluorides Groundwater Hazardous materials Hydroxyapatite LDCs Materials science Methods Nanomaterials Reaction kinetics Researchers |
| title | Eggshell-Derived Nanohydroxyapatite Adsorbent for Defluoridation of Drinking Water from Bofo of Ethiopia |
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