Nesrine Allal, Abderrezak Abdi, Radia Bagtache, Mohamed Trari
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Effect of polyaniline particle size on the chromate adsorption from aqueous electrolyte
In this contribution, we report the investigation on removing of the oxochromium (VI), a hazardous species, using HCl-doped polyaniline (PAni-HCl) as adsorbent versus particles size. PAni-HCl has been successfully elaborated by conventional oxidative chemical method in the temperature range (0–3 °C). The recovered powder was milled and sieved into size ranges of < 50, 50–63, 125–160 and > 200 µm. The batch adsorption experiments were performed at 25 °C, using 250 mg of PAni-HCl dispersed in 250 mL of Cr(VI) aqueous solution (250 mg L−1). The Cr(VI) uptake was significantly influenced by both the particle size and contact time. Smaller particle sizes allow a quick initial adsorption and high removal efficiency (~100%). The kinetics of the Cr(VI) adsorption follow the pseudo-second-order model. A good correlation was demonstrated between the removal chromium (VI) properties (Qe,exp, k2 and τ(%)) and the (normalized) mean diameter ratio.
期刊介绍：
"Polymer Bulletin" is a comprehensive academic journal on polymer science founded in 1988. It was founded under the initiative of the late Mr. Wang Baoren, a famous Chinese chemist and educator. This journal is co-sponsored by the Chinese Chemical Society, the Institute of Chemistry, and the Chinese Academy of Sciences and is supervised by the China Association for Science and Technology. It is a core journal and is publicly distributed at home and abroad.
"Polymer Bulletin" is a monthly magazine with multiple columns, including a project application guide, outlook, review, research papers, highlight reviews, polymer education and teaching, information sharing, interviews, polymer science popularization, etc. The journal is included in the CSCD Chinese Science Citation Database. It serves as the source journal for Chinese scientific and technological paper statistics and the source journal of Peking University's "Overview of Chinese Core Journals."
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