2010•Advanced materials researchOpen access

Behavior of Phosphorus Adsorption from Aqueous Solutions on Modified Activated Alumina

Chun Sheng Ding, Ying Long Zou, Fang Ming Ni, Zhu Qian

Abstract

In the study, activated alumina was modified by calcium chloride, and after modification the phosphorus removal from aqueous solution increased by 13% or so. Then the activated alumina with and without treatment were subjected to characterization by the methods of the BET and SEM, and the adsorption characteristics of modified activated alumina were further studied at different contact time, pH values, adsorbent dosage levels and initial phosphorus concentration. Moreover, the equilibrium adsorption data for phosphorus were better fitted to Langmuir adsorption isotherm, and it means that the uptake of phosphorus preferably followed the monolayer adsorption process.

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Key concepts: Adsorption, Phosphorus, Aqueous solution, Monolayer, Langmuir adsorption model, Activated alumina, Chemistry, Inorganic chemistry