Equilibrium and kineticsstudies of phosphate removal from solution onto a hydrothermally modified Al-Si-Fe-Ca composite adsorbent - Details

author：

Wu, Q. (Wu, Q..) ^[1] | You, R.R. (You, R.R..) ^[2] | Wu, Q.P. (Wu, Q.P..) ^[3] | Chen, F.Y. (Chen, F.Y..) ^[4] | Yu, Y. (Yu, Y..) ^[5]

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Abstract：

A　novel　Al-Si-Fe-Ca　composite　material　for　phosphate　removal　in　wastewater　treatment　was　made　by　using　Al(OH)3,Fe2O3,CaO　and　silica　powder　as　raw　materials.　Sorption　data　modelling　with　a　pH　range　of　3-12,　P　concentrations　of　3,5,7,9,　11,13,　15mg　L-1,　and　an　ambient　temperature　of　23°C;　indicated　that　an　optimal　removal　of　P　occurred　at　pH　6.0.　A　maximum　removal　of　99.68%　was　found　for　11mg　L-1　(pH　of　6).　Langmuir　isotherm　best　described　theadsorption　processwith　a　maximumadsorption　capacity　of　8.60mg　g-1.　Three　kinetic　models　(apseudo-first-order,　a　pseudo-second-order(PSO)　and　Elovich)　were　also　applied,and　the　results　showed　that　the　PSOmodel　best　described　the　data.　SEM　and　EDAX　analysis　confirmed　that　P　was　adsorbed　to　the　surface　of　the　composite　material.　This　study　demonstrates　that　the　composite　adsorbent　is　suitable　for　use　in　wastewater　treatment,　with　P　removal　of　the　solids　being　preferential　and　spontaneous.　©　(2014)　Trans　Tech　Publications,　Switzerland.

Keyword：

Adsorption equilibrium; Adsorption kinetics; Al-Si-Fe-Ca composite adsorbent; Phosphate adsorption

Community：

[ 1 ] [Wu, Q.]College of Materials Science and Engineering, Fuzhou University, New Campus, Minhou, FujianProvince, 350108, China
[ 2 ] [You, R.R.]College of Materials Science and Engineering, Fuzhou University, New Campus, Minhou, FujianProvince, 350108, China
[ 3 ] [Wu, Q.P.]College of Materials Science and Engineering, Fuzhou University, New Campus, Minhou, FujianProvince, 350108, China
[ 4 ] [Chen, F.Y.]College of Materials Science and Engineering, Fuzhou University, New Campus, Minhou, FujianProvince, 350108, China
[ 5 ] [Yu, Y.]College of Materials Science and Engineering, Fuzhou University, New Campus, Minhou, FujianProvince, 350108, China

Reprint 's Address：

[Yu, Y.]College of Materials Science and Engineering, Fuzhou University, New Campus, Minhou, FujianProvince, 350108, China

Email：

yuyan@fzu.edu.cn

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Source ：

Materials Science Forum

ISSN： 0255-5476

Year： 2014

Volume： 787

Page： 128-134

Language： English

0 . 3 9 9

JCR@2005

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