碱性氧炉渣吸附酸性工业废水中的锌和铁

2017IEEE 9th International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment and Management (HNICEM) Pub Date : 2017-12-01 DOI:10.1109/HNICEM.2017.8269540

T. Falayi, F. Ntuli

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引用次数: 1

摘要

以碱性氧炉炉渣为吸附剂，对炼钢废水中的重金属进行了脱除。出水铁、锌含量均高于法定限值。当炉渣的固体负荷为0.75%时，可以去除97%以上的铁和99%以上的锌。转炉炉渣也能在30分钟后将出水pH从2.5提高到6.8。铁和锌的吸附遵循Langmuir等温线和一级动力学。负载金属的转炉炉渣可进行3次循环吸附试验，且稳定性较好，不会进一步浸出。因此，这项研究为利用渣作为含重金属的酸性工业废水的吸附剂提供了机会。

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Adsorption of zinc and Iron from acidic industrial effluent using basic oxygen furnace slag

Basic oxygen furnace (BOF) slags was used as an adsorbent to remove heavy metals from steel processing plant effluent. The effluent had above legal limits content of Fe and Zn. A 0.75% solid loading of BOF slag was found to remove over 97% of Fe and 99%v of Zn. BOF slag was also able to raise the pH of the effluent from 2.5 to 6.8 after 30 mins. The adsorption of Fe and Zn followed Langmuir isotherm and first order kinetics. The metal loaded BOF slag could be used in three cycles of adsorption experiments and was stable against further leaching. This research therefore provides opportunity for the utilisation of the slag as an adsorbent for acidic industrial effluents containing heavy metals.

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2017IEEE 9th International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment and Management (HNICEM)

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