Phosphate removal from aqueous solution by adsorption on modified giant reed

The use of modified giant reed (MGR) as an adsorbent to remove phosphate from an aqueous solution was investigated. The dosage of MGR, pH of the phosphate solution, thermodynamics, and the effects of several factors on kinetics (concentration of phosphate solution, solution temperature, and shaking...

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Veröffentlicht in:Water environment research : a research publication of the Water Environment Federation. - 1998. - 82(2010), 4 vom: 25. Apr., Seite 374-81
1. Verfasser: Yue, Qin-Yan (VerfasserIn)
Weitere Verfasser: Wang, Wen-Yi, Gao, Bao-Yu, Xu, Xing, Zhang, Jian, Li, Qian
Format: Aufsatz
Sprache:English
Veröffentlicht: 2010
Zugriff auf das übergeordnete Werk:Water environment research : a research publication of the Water Environment Federation
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Phosphates Solutions Water 059QF0KO0R
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245 1 0 |a Phosphate removal from aqueous solution by adsorption on modified giant reed 
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520 |a The use of modified giant reed (MGR) as an adsorbent to remove phosphate from an aqueous solution was investigated. The dosage of MGR, pH of the phosphate solution, thermodynamics, and the effects of several factors on kinetics (concentration of phosphate solution, solution temperature, and shaking speed) were studied in batch experiments. The results showed that MGR was particularly effective to remove phosphate and that the effective pH range for the phosphate removal was between 4 and 9. The adsorption process could reach equilibrium in 25 minutes. Three kinetic models have been evaluated to fit the experimental data. It was shown that the pseudo-second-order model best described the adsorption kinetics of phosphate on MGR. The low activation energy of the adsorption suggested a physisorption process for phosphate adsorption. The equilibrium isotherm showed that the adsorption system was consistent with the Langmuir equation. The negative values of standard free energy (AG) and enthalpy (AH) indicated that the adsorption of phosphate onto MGR was a spontaneous and exothermic process 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 7 |a Phosphates  |2 NLM 
650 7 |a Solutions  |2 NLM 
650 7 |a Water  |2 NLM 
650 7 |a 059QF0KO0R  |2 NLM 
700 1 |a Wang, Wen-Yi  |e verfasserin  |4 aut 
700 1 |a Gao, Bao-Yu  |e verfasserin  |4 aut 
700 1 |a Xu, Xing  |e verfasserin  |4 aut 
700 1 |a Zhang, Jian  |e verfasserin  |4 aut 
700 1 |a Li, Qian  |e verfasserin  |4 aut 
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