科研之友
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摘要
Adsorbent is a key factor influencing the removal of phosphate from aqueous solution in terms of adsorption technique. In this present work, limonite-pyrrhotite (L-pyr) was prepared by the reaction of natural limonite with sulfur derived from the decomposition of pyrite. The L-pyr was utilized to remove phosphate from aqueous solution. The effect of preparation temperature, initial P concentration, initial solution pH, oxygen amount, and interference ions on the P removal was investigated to evaluate the performance of L-pyr. The results showed that increased oxygen amount favored the phosphate removal and the effect of solution pH can be ignored as the initial solution pH was not more than 8.5. The existence of improved phosphate removal in contrast with the negative role of Cl-, , and in an order: Cl-. As for kinetic study, the adsorption onto L-pyr can be fitted well to pseudo-second-order model. The experimental results provided a novel way to prepare L-pyr having an effective performance in the removal of phosphate and easy to be separated from aqueous solution by means of magnetic separation technique.
- 出版日期2016-10
- 单位合肥工业大学
