利用活性化轉爐石吸附廢水中所含有的鉛重金屬物質

Adsorption of Lead Heavy Metal from Wastewater by Activated Basic Oxygen Furnace Slag

李元陞(Yuan-Shen Li) ； 劉鎮宗(Cheng-Chung Liu) ； 邱求三(Chyow-San Chiou) ； 孫瑞志(Tui-Chih Sun) ； 黃政堅(Zheng-Jian Huang)

《宜蘭技術學報》 9期工學專輯 (2002/12) Pp. 127-139

https://doi.org/10.6179/nit.bce.2002.09.22

摘要

此研究計畫是利用煉鋼業者於轉爐煉鋼時所產生的廢棄轉爐石加以活性化後，以吸附廢水中的鉛重金屬物質，以期經濟、有效的處理重金屬污染問題。於計畫中分別針對轉爐石的吸附特性行為進行分析研究。實驗結果證實，於廢水溶液pH值4.0 時，轉爐石具有最佳的吸附效果，其恆溫吸附特性符合Freundlich的恆溫吸附模式。較高的反應溫度有利於吸附反應的進行，因此轉爐石的吸附反應應屬吸熱反應。由轉爐石的吸附動力學探討發現，轉爐石的吸附現象符合模擬二階吸附模式。轉爐石吸附力與粒徑成反比關係，於模擬二階吸附模式分析中，其吸附平衡量qc及k2值均隨粒徑增加而降低。

關鍵字

爐石 ； 重金屬 ； 吸附

並列摘要

Basic oxygen furnace slag (BOF slag) that generated from steel plants were used to adsorb lead (Pb) heavy metals from wastewater to economic and effective to treat heavy metal pollution problems. In the project, the adsorption characteristic of furnace slag was investigated. The experimental results demonstrate that furnace slag posses a higher adsorption efficiency in the pH value of wastewater 4.0. The isotherm adsorption of furnace slag satisfies the Freundlich isotherm equation. A higher reaction temperature favor the adsorption shows that furnace adsorption belongs to an endothermic reaction. The adsorption kinetics of furnace slag can be best described by a pseudo second order adsorption mechanism. The adsorption capacity of furnace is opposite proportional to particle size. The quantities of adsorption equilibrium, qc and k2 value in the pseudo second order adsorption equation is decreased following increase in particle sizes.

並列關鍵字

Furnace slag ； Heavy metal ； adsorption