Adsorption property of aerobic granular sludge for sunset yellow in aqueous solutions - Details

Author：

Zhang, Yan-Zhuo (Zhang, Yan-Zhuo.) | Li, Jun (Li, Jun.) (Scholars：李军) | Li, Yun (Li, Yun.) | Chen, Guang-Hui (Chen, Guang-Hui.) | Bian, Wei (Bian, Wei.)

Indexed by：

EI Scopus PKU CSCD

Abstract：

The　ability　of　aerobic　granular　sludge　(AGS)　to　adsorb　sunset　yellow　(SY)　in　aqueous　solutions　is　investigated,　and　the　adsorption　process　affected　by　pH　value,　adsorbent　dosage,　initial　SY　concentration　and　temperature　is　explored.　The　results　show　that　(1)　pH　value　is　an　important　influencing　factor　of　adsorption　efficiency;　(2)　the　best　adsorption　is　achieved　at　a　pH　value　of　2,　an　AGS　dosage　of　2　g/L　and　a　temperature　of　35;　(3)　the　equilibrium　adsorption　capacity　is　positively　correlated　with　the　initial　SY　concentration;　and　(4)　the　equilibrium　adsorption　data　accord　the　Langmuir　model　and　the　pseudo-second-order　kinetic　model　well,　with　a　saturated　SY　adsorption　capacity　of　142.86　mg/L.　Thermodynamic　analysis　indicates　that　the　adsorption　process　is　spontaneous　and　endothermic　for　dye,　and　that　low　SY　concentration　benefits　the　adsorption　affinity.　Thus,　it　comes　to　the　conclusion　that　AGS　can　be　used　as　a　low-cost　adsorbent　for　the　removal　of　SY　dye　from　wastewater.　©,　2015,　South　China　University　of　Technology.　All　right　reserved.

Keyword：

Thermodynamics Enzyme kinetics Dyes Granular materials pH Adsorption Thermoanalysis

Author Community：

[ 1 ] [Zhang, Yan-Zhuo]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing; 100124, China
[ 2 ] [Li, Jun]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing; 100124, China
[ 3 ] [Li, Yun]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing; 100124, China
[ 4 ] [Chen, Guang-Hui]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing; 100124, China
[ 5 ] [Bian, Wei]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing; 100124, China

Reprint Author's Address：

李军
[li, jun]key laboratory of beijing for water quality science and water environment recovery engineering, college of architecture and civil engineering, beijing university of technology, beijing; 100124, china

Email：

jglijun@bjut.edu.cn

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