Removal of Heavy Metal Ions from Water Using Nano-Barium Strontium Titanate Immobilized on the Silica Gel G as an Adsorbent

Abstract:

A new method based on the sorption of the nano-barium strontium titanate immobilized on the silica gel G(GBST) to heavy metal ions, included Mn(Ⅱ), Cu²⁺, Ni²⁺,Co²⁺ and Ag⁺, in waste water. The effects of process parameters such as pH, contact time, regeneration conditions and the effects of common coexisting ions on the ions uptake were investigated. The results showed that the manganese, copper, nickel, cobalt and silver ions studied could be quantitatively retained at a pH value range of 7~9. The adsorption capacities of GBST for manganese, copper, nickel, cobalt and silver ions were found to be 8.2 mg/g, 18.3 mg/g, 4.2 mg/g, 2.2 mg/g and 3.1 mg/g, respectively. The heavy metal ions adsorbed on the sorbent could be eluated completely with diluted HNO₃ solutions. The GBST can be used as an effective adsorbent for the treatment of wastewaters contaminated with manganese, copper, nickel, cobalt and silver ions.

• Periodical: Applied Mechanics and Materials (Volumes 71-78)
• Pages: 3500-3503
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.71-78.3500
• Online since: July 2011
• Authors: Dong Zhang
• Keywords: Adsorption, Heavy Metal Ion, Nano-Barium-Stroutium Titanate, Silica Gel G, Wastewater

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