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首页> 外文期刊>Journal of the air & waste management association >Production of granular activated carbon from food-processing wastes (walnut shells and jujube seeds) and its adsorptive properties
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Production of granular activated carbon from food-processing wastes (walnut shells and jujube seeds) and its adsorptive properties

机译：从食品加工废料（核桃壳和枣种子）生产颗粒状活性炭及其吸附性能

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摘要

Commercial activated carbon is a highly effective absorbent that can be used to remove micropollutants from water. As a result, the demand for activated carbon is increasing. In this study, we investigated the optimum manufacturing conditions for producing activated carbon from ligneous wastes generated from food processing. Jujube seeds and walnut shells were selected as raw materials. Carbonization and steam activation were performed in a fixed-bed laboratory electric furnace. To obtain the highest iodine number, the optimum conditions for producing activated carbon from jujube seeds and walnut shells were 2 hr and 1.5 hr (carbonization at 700℃) followed by 1 hr and 0.5 hr (activation at 1000℃), respectively. The surface area and iodine number of activated carbon made from jujube seeds and walnut shells were 1,477 and 1,184 m~2/g and 1,450 and 1,200 mg/g, respectively. A pore-distribution analysis revealed that most pores had a pore diameter within or around 30-40 A, and adsorption capacity for surfactants was about 2 times larger than the commercial activated carbon, indicating that waste-based activated carbon can be used as alternative.
机译：商业活性炭是一种高效吸收剂，可用于从水中去除微量污染物。结果，对活性炭的需求增加。在这项研究中，我们调查了从食品加工产生的木质废物中生产活性炭的最佳制造条件。选用大枣种子和核桃壳作为原料。碳化和蒸汽活化在固定床实验室电炉中进行。为了获得最高的碘值，从枣种子和核桃壳中生产活性炭的最佳条件分别为2小时和1.5小时（在700℃下碳化），然后分别为1小时和0.5 hr（在1000℃下活化）。枣种子和核桃壳制成的活性炭的表面积和碘值分别为1,477和1,184 m〜2 / g和1,450和1,200 mg / g。孔分布分析表明，大多数孔的孔径在30-40 A左右，并且对表面活性剂的吸附能力是市售活性炭的约2倍，这表明可以将废物基活性炭用作替代品。

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    Wookeun Bae; Jongho Kim; Jinwook Chung;

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    Department of Civil and Environmental Engineering, Hanyang University, Ansan, Gyeonggi-Do, Republic of Korea;

    Department of Civil and Environmental Engineering, Hanyang University, Ansan, Gyeonggi-Do, Republic of Korea;

    R&D Center, Samsung Engineering Co. Ltd., 415-10 Woncheon-Dong, Youngtong-Gu, Suwon, Gyeonggi-Do 443-823, Republic of Korea;

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