Comparative Study of As (III) and Zn (II) Removal from Aqueous Solutions Using Philippine Natural Zeolite and Alumina

被引：6
作者：
Olegario-Sanchez, Eleanor [1 ]
Mark Pelicano, Christian [1 ]
机构：
[1] Univ Philippines, Dept Min Met & Mat Engn, Quezon City 1101, Philippines
来源：
ADVANCED MATERIALS FOR SUSTAINABILITY AND GROWTH | 2017年 / 1901卷
关键词：
D O I：
10.1063/1.5010513
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Herein, the heavy metal removal efficiency of Philippine natural zeolite is investigated through a comparative study with commercial alumina (Al2O3). XRD results revealed a high purity crystalline gamma-Al2O3 and a natural zeolite having clinoptilolite (Na,K,Ca)(2-3)Al-3(Al,Si)(2)Si13O36 center dot 12H(2)O and mordenite (Ca, Na-2, K-2)Al2Si10O24 center dot 7H(2)O as primary component minerals. Micro-pores and plate-like structures were observed on the surface of the natural zeolite. The natural zeolite has shown three times higher removal efficiency for Zn2+ ion than alumina. On the other hand, alumina exhibited comparable but smaller removal efficiency for As3+ as with that of natural zeolite. Alumina showed a higher capability of increasing the pH of both solutions compared with the natural zeolite. Based on removal efficiency and adsorbent costs, Philippine natural zeolite could be used as a low-cost alternative for wastewater treatment.
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页数：6
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