Adsorption and Preconcentration Capabilities of Porous Nano-Barium-Strontium Titanate for Nickel in Water

Abstract:

The adsorption capability of porous nano-barium-strontium titanate by sorghum straw template method (SBST) for nickel in water was studied. The optimum experimental parameters for the adsorption and preconcentration of the nickel, such as pH, time, eluent and coexisting ion, have been investigated. The results showed that the nickel in water could be adsorbed on the SBST. The adsorbed quantitively was affected by the pH value of medium and time. In the medium of pH 5-8, the adsorption time was 20 min, and capacity of adsorption was 13.27 mg•g-1. The adsorbed nickel could be completely eluated using 2 mol•L-1 HNO3. The pre-concentration factor for nickel was more than 100. The method has been applied to the preconcentration and flame atomic absorption spectrometry determination of nickel in water samples. The recoveries were 92.0%-104.0%.

• Periodical: Advanced Materials Research (Volumes 403-408)
• Pages: 1141-1145
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.403-408.1141
• Online since: November 2011
• Authors: Dong Zhang
• Keywords: Adsorption, Environmental Water, Flame Atomic Absorption Spectrometry, Nickel, Porous Nano-Barium-Strontium Titanate, Preconcentration

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