dc.contributor.author | Nefzi, Houwaida | |
dc.contributor.author | Abderrabba, Manef | |
dc.contributor.author | Ayadi, Sameh | |
dc.contributor.author | Labidi Bouchrika, Jalel | |
dc.date.accessioned | 2019-04-02T15:18:55Z | |
dc.date.available | 2019-04-02T15:18:55Z | |
dc.date.issued | 2018-09-15 | |
dc.identifier.citation | Water 10(9) : (2018) // Article ID 1257 | es_ES |
dc.identifier.issn | 2073-4441 | |
dc.identifier.uri | http://hdl.handle.net/10810/32305 | |
dc.description.abstract | Environmental contamination by toxic heavy metals is a serious worldwide phenomenon. Thus, their removal is a crucial issue. In this study, we found an efficient adsorbent to remove Cu2+ and Ni2+ from aqueous solution using two materials. Chemical modification was used to obtain palygorskite clay from diatomite. The adsorbents were characterized using X-ray florescence, Fourier transform infrared spectroscopy and X-ray diffraction. The effects of contact time, initial concentration, temperature and pH on the adsorption process were investigated. Our results showed that the (%) of maximum adsorption capacity of diatomite was 78.44% for Cu2+ at pH 4 and 77.3% for Ni2+ at pH 7, while the (%) of the maximum adsorption on palygorskite reached 91% for Cu2+ and 87.05% for Ni2+, in the same condition. The results indicate that the pseudo-second-order model can describe the adsorption process. Furthermore, the adsorption isotherms could be adopted by the Langmuir and the Freundlich models with good correlation coefficient (R-2). Thus, our results showed that palygorskite prepared from Tunisian diatomite is a good adsorbent for the removal of heavy metals from water. | es_ES |
dc.description.sponsorship | This research was funded by Department of Education of the Basque Government grant number [IT1008-16]" and "The APC was funded by Department of Education of the Basque Government. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | MDPI | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | palygorskite clay | es_ES |
dc.subject | diatomaceous earth | es_ES |
dc.subject | heavy metals | es_ES |
dc.subject | adsorption capacity | es_ES |
dc.subject | activated palygorskite | es_ES |
dc.subject | coated sand | es_ES |
dc.subject | copper II | es_ES |
dc.subject | adsorption | es_ES |
dc.subject | ions | es_ES |
dc.subject | equilibrium | es_ES |
dc.subject | kinetics | es_ES |
dc.subject | toluene | es_ES |
dc.subject | nickel | es_ES |
dc.subject | desorption | es_ES |
dc.title | Formation of Palygorskite Clay from Treated Diatomite and its Application for the Removal of Heavy Metals from Aqueous Solution | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.relation.publisherversion | https://www.mdpi.com/2073-4441/10/9/1257 | es_ES |
dc.identifier.doi | 10.3390/w10091257 | |
dc.departamentoes | Ingeniería química y del medio ambiente | es_ES |
dc.departamentoeu | Ingeniaritza kimikoa eta ingurumenaren ingeniaritza | es_ES |