Engineered biochar from agricultural waste for removal of tetracycline in water
Engineered biochar from agricultural waste for removal of tetracycline in water
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DOI：
10.1016/j.biortech.2019.03.131
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发表时间：
2019-07-01
影响因子：
11.4
通讯作者：
Kan, Eunsung
中科院分区：
文献类型：
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作者：
Jang, Hyun Min;Kan, Eunsung
本研究首次调查了源自苜蓿干草的工程生物炭的生产、表征和应用，用于去除水中的四环素 (TC)。 NaOH 活化苜蓿源生生物炭 (BCR) 后，其表面积 (796.50 m(2)/g) 和孔体积 (0.087 cm(3)/g) 显着增加。 NaOH 活化的 BC (BCA) 对 TC 的吸附能力 (Q(m) = 302.37 mg/g) 比 BCR 高得多，但与商业活性炭 (Calgon F400) 相当。动力学和等温线研究的详细分析表明 TC 和 BCA 之间通过多种机制存在强烈的化学吸附相互作用。此外，颗粒内扩散被认为是TC在BCA上吸附的主要限制。此外，固定床实验表明，BCA 可能是一种有前途的吸附剂，用于处理柱中大量 TC 污染的水。
For the first time the present study investigated the production, characterization and application of engineered biochar derived from alfalfa hays for removal of tetracycline (TC) in water. The NaOH activation of alfalfa-derived raw biochar (BCR) made significant increase in surface area (796.50 m(2)/g) and pore volume (0.087 cm(3)/g). The NaOH-activated BC (BCA) showed much higher adsorption capacity for TC (Q(m) = 302.37 mg/g) than BCR, but comparable to the commercial activated carbon (Calgon F400). The detailed analyses of the kinetic and isotherm studies suggested the strong chemisorptive interactions between TC and BCA via multiple mechanisms. In addition, intraparticle diffusion was considered as the major limitation for the adsorption of TC onto BCA. Furthermore, the fixed bed experiments revealed that BCA could be a promising adsorbent for treating large volume of TC-contaminated water in columns.