Facile Synthesis of New Amino-functionalized Agrogenic Hybrid Composite Clay Adsorbents for Phosphate Capture and Recovery from Water

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dc.contributor.authorOmorogie, Martins
dc.date.accessioned2022-02-02T15:00:57Z
dc.date.available2022-02-02T15:00:57Z
dc.date.issued2017-10-15
dc.descriptionThe authors gratefully acknowledge funding from The World Academy of Sciences (TWAS) with a research grant (10-215 RG/ CHE/AF/AC_G-UNESCO FR: 324028613) for this work. The support of the Redeemer’s University, Nigeria, Department of Earth and Environmental Science, University of Potsdam, Potsdam, Germany and the Institute of Chemistry, Universität Potsdam, Germany is also highly appreciated.en_US
dc.description.abstractNew hybrid clay materials with good affinity for phosphate ions were developed from a combination of biomass-Carica papaya seeds (PS) and Musa paradisiaca (Plantain peels-PP), ZnCl2 and Kaolinite clay to produce iPS-HYCA and iPP-HYCA composite adsorbents respectively. Functionalization of these adsorbents with an organosilane produced NPS-HYCA and NPP-HYCA composite adsorbents. The pHpzc for the adsorbents were 7.83, 6.91, 7.66 and 6.55 for iPS-HYCA, NPS-HYCA, iPP-HYCA and NPP-HYCA respectively. Using the Brouer-Sotolongo isotherm model which best predict the adsorption capacity of composites for phosphate, iPP-HYCA, iPS-HYCA, NPP-HYCA, and NPS-HYCA composite adsorbents respectively. When compared with some commercial resins, the amino-functionalized adsorbents had better adsorption capacities. Furthermore, amino-functionalized adsorbents showed improved adsorption capacity and rate of phosphate uptake (as much as 40-fold), as well as retain 94% (for NPS-HYCA) and 84.1% (for NPP-HYCA) efficiency for phosphate adsorption after 5 adsorption-desorption cycles (96 h of adsorption time with 100 mg/L of phosphate ions) as against 37.5% (for iPS-HYCA) and 35% (for iPP-HYCA) under similar conditions. In 25 min desorption of phosphate ion attained equilibrium. These new amino-functionalized hybrid clay composite adsorbents, which were prepared by a simple means that is sustainable, have potentials for the efficient capture of phosphate ions from aqueous solution. They are quickly recovered from aqueous solution, non-biodegradable (unlike many biosorbent) with potentials to replace expensive adsorbents in the future. They have the further advantage of being useful in the recovery of phosphate for use in agriculture which could positively impact the global food security programme.en_US
dc.identifier.citation36en_US
dc.identifier.otherhttps://doi.org/10.1016/j.jclepro.2017.06.160
dc.identifier.urihttp://dspace.run.edu.ng:8080/jspui/handle/123456789/999
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subjectComposite Adsorbentsen_US
dc.subjectSustainableen_US
dc.subjectPhosphate Recoveryen_US
dc.subjectWateren_US
dc.subjectDesorption Kineticsen_US
dc.titleFacile Synthesis of New Amino-functionalized Agrogenic Hybrid Composite Clay Adsorbents for Phosphate Capture and Recovery from Wateren_US
dc.typeArticleen_US
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Journal of Cleaner Production, 2017, 164: 652-663.
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