Preparation and Characterization of Nanometer Calcium Titanate Immobilized on Aluminum Oxide and its Adsorption Capacity for Heavy Metal Ions in Water

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Nanometer calcium titanate immobilized on Aluminum oxide (ACTO) was successfully prepared by the citrate acid sol-gel method and characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The adsorption capability of ACTO for Pb2+, Cd2+and Zn2+ from water was studied. Adsorption and elution were investigated under different conditions. The results show that nanometer calcium titanate could be immobilized on the aluminum oxide firmly, becoming a composite adsorbent. The Pb2+, Cd2+and Zn2+ were retained at pH 5-9, their adsorption capacities of ACTO were 124 mg•g-1, 8.58 mg•g-1 and 13.86 mg•g-1, respectively. The adsorption agent can be regenerated by elution with 2 mol•L-1 HNO3. The adsorbent has a promising prospect in removal or enriching and separation of heavy metals in water.

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Periodical:

Advanced Materials Research (Volumes 152-153)

Edited by:

Zhengyi Jiang, Jingtao Han and Xianghua Liu

Pages:

670-673

DOI:

10.4028/www.scientific.net/AMR.152-153.670

Citation:

D. Zhang "Preparation and Characterization of Nanometer Calcium Titanate Immobilized on Aluminum Oxide and its Adsorption Capacity for Heavy Metal Ions in Water", Advanced Materials Research, Vols. 152-153, pp. 670-673, 2011

Online since:

October 2010

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$38.00

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