{"id":8032,"date":"2019-05-05T10:53:13","date_gmt":"2019-05-05T09:53:13","guid":{"rendered":"http:\/\/synthese.univ-annaba.dz\/?p=8032"},"modified":"2019-10-22T13:35:58","modified_gmt":"2019-10-22T12:35:58","slug":"effect-of-caoh2-on-the-chemical-precipitation-of-phosphates-from-solutions-of-a-low-concentration-in-fluidized-bed-reactor-hydrodynamic-evaluation","status":"publish","type":"post","link":"https:\/\/synthese.univ-annaba.dz\/?p=8032","title":{"rendered":"Effect of Ca(OH)2 on the chemical precipitation of phosphates from solutions of a low concentration in fluidized bed reactor: hydrodynamic evaluation"},"content":{"rendered":"
Num\u00e9ro de la revue<\/strong>: Volume 25 , Num\u00e9ro 1
\nAuteurs<\/strong>: Riad Eutamene*1<\/sup>, Leila Benmansour1<\/sup> & Saleh Khashayar2<\/sup><\/div>\n
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1<\/sup><\/strong>Environmental Engineering Laboratory, Process Engineering Department, University of Badji Mokhtar, Po Box 12, 23000, Annaba, Algeria.<\/p>\n

2<\/sup><\/strong>Industrial Process Engineering Department, CS60319, University the Technology of Compiegne, France<\/p>\n

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T\u00e9l\u00e9charger l’article\"p2\"<\/strong><\/a><\/p>\n<\/div>\n

ABSTRACT<\/strong><\/p>\n

In this present work, the phosphate is precipitated chemically at 22\u00b0C using synthetic water at different Ca\/P molar ratios ranging from 0.5 to 12. Various parameters have been optimized to a range of realistic conditions relative to chemical precipitation of phosphates (superficial velocity of fluid Uf <\/sub>= 0.58 cm\/s, [PO4<\/sub>] = 10 mgP\/L). A hydrodynamic evaluation of the chemical precipitation of phosphates in a fluidized bed reactor, contains sand particles as a substrate for the precipitate layer, from an ascending water stream using Ca(OH)2<\/sub> was made. As a function of Ca\/P, the occurrences domains of the different hydrodynamics parameters are given. The effect of the Ca(OH)2<\/sub> on the porosity and the velocity of the fluidized bed it also presented. For the inlet Ca\/P molar ratio, was lower than 4, the phosphate removal efficiency is 35~74%. While, for the suitable conditions of Ca\/P>4, the phosphate removal efficiency ranging from 75 to 92%. It is found that the [Ca] and [PO4<\/sub>] significantly affect the velocity of fluidization and the porosity of the fluidized bed. In this connection, the experimental data of several authors provide a useful starting point for our comparisons.<\/p>\n

Keywords :<\/em><\/strong>Chemical precipitation – Fluidized bed – Phosphate – Porosity – Molar ratio.<\/p>\n

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Num\u00e9ro de la revue: Volume 25 , Num\u00e9ro 1 Auteurs: Riad Eutamene*1, Leila Benmansour1 & Saleh Khashayar2 1Environmental Engineering Laboratory, Process Engineering Department, University of Badji Mokhtar, Po Box 12, 23000, Annaba, Algeria. 2Industrial Process Engineering Department, CS60319, University the … Lire la suite »<\/span><\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1352],"tags":[],"class_list":["post-8032","post","type-post","status-publish","format-standard","hentry","category-synthese-251"],"_links":{"self":[{"href":"https:\/\/synthese.univ-annaba.dz\/index.php?rest_route=\/wp\/v2\/posts\/8032","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/synthese.univ-annaba.dz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/synthese.univ-annaba.dz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/synthese.univ-annaba.dz\/index.php?rest_route=\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/synthese.univ-annaba.dz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8032"}],"version-history":[{"count":3,"href":"https:\/\/synthese.univ-annaba.dz\/index.php?rest_route=\/wp\/v2\/posts\/8032\/revisions"}],"predecessor-version":[{"id":8243,"href":"https:\/\/synthese.univ-annaba.dz\/index.php?rest_route=\/wp\/v2\/posts\/8032\/revisions\/8243"}],"wp:attachment":[{"href":"https:\/\/synthese.univ-annaba.dz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8032"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/synthese.univ-annaba.dz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8032"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/synthese.univ-annaba.dz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8032"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}