| 光谱学与光谱分析 |
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| Study on Adsorption Behavior of Crosslinked Polyarylonitrile for Copper, Lead, Cadmium and Zinc Ions by Atomic Absorption Spectrometry |
| Shawket Abliz, PENG Yang, WANG Ji-de, Ismayil Nurulla* |
| College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China |
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Abstract The crosslinked polymer polyacrylonitrile was synthesized by suspension polymerization using acrylonitrile and divinylbenzene. It has been used as adsorbent of some toxic heavy metals in environmental waters. Its adsorption for metals and the factors which affect the adsorption capacity were studied by atomic absorption spectrometry (AAS). The experimental results showed that under the optimal adsorption conditions, the pH of adsorbate solution was 5-6, static adsorption time was 1.5-2 h, and adsorption procedure was carried out at room temperature, polyacrylonitrile as adsorbent has high adsorption capacity (mg·g-1) for Cu2+, Pb2+, Cd2+ and Zn2+, which can reach 26.6, 45.2, 39.7 and 32.5 separately. Adsorption rate (%) was 83.6, 87.1, 85.3 and 86.7 respectively during the 1.5-2 h static adsorption time. It will be more than five-hour static adsorption time before adsorption rate reaches more than 96%. Using 0.10 mol·L-1 chloride acid as the best desorption solvent to desorb the adsorbates, the recovery of them reached 95%. At the same time the adsorption mechanism of polymer was studied.
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Received: 2009-09-06
Accepted: 2009-12-08
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Corresponding Authors:
Ismayil Nurulla
E-mail: ismayilnu@sohu.com
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