木質纖維材料應用於重金屬污染物質之移除

由於全球人口急速成長及工商業的快速發展，環境污染的問題日益嚴重。污染物的型式有空氣污染、土壤及地下水污染、水污染、廢棄物污染、毒物及藥物污染等；或依污染物種類簡單分為有機污染物及無機污染物等兩大類。無機污染物中以重金屬對人類健康及生態之危害最為嚴重，重金屬因具有不能被生物降解之特性，故會慢慢累積於生物體內及食物鏈中，其危害廣大而持久，因此，尋求更經濟有效之重金屬清除方法實有迫切之必要。木質纖維材料因含有大量可與金屬結合之官能基，且具有成本低廉、來源豐富、符合資源再生利用之特性，具有作為移除環境污染物質之潛力。本篇回顧比較各種木質纖維原料間移除重金屬污染物之能力，並綜合比較經化學處理及生物科技處理後之木質纖維材料移除重金屬污染物質之效能與特性。

關鍵字

生物吸附；重金屬；木質纖維材料；金屬硫蛋白；植物螯合素

並列摘要

In recent years, the presence of toxic heavy metals in the environment has emerged as a major concern on a global scale. Heavy metals can be distinguished from other toxic pollutants, since they are not biodegradable and tend to be accumulated in living tissues, causing various diseases and disorders. Conventional methods for removing metals from industrial effluents such as chemical precipitation, solvent extraction, electrolysis, membrane separation, ion exchange, and adsorption are either too expensive or not suitable for large volume of low metal concentration wastewater. Therefore, a cost effective alternative technology or sorbent is needed. Lignocellulose that is available in large quantities is a cheap, rapidly renewable material. Additionally, because of its multiple functional groups, it has high potential as inexpensive sorbents. This paper reviewed the potential of the metal removal capabilities of different natural lignocellulose through chemical or biochemical modification.

並列關鍵字

Biosorption ； Heavy metals ； Lignocellulose ； Metallothioneins ； Phytochelatins

國際替代計量

木質纖維材料應用於重金屬污染物質之移除

全文下載

主題瀏覽