【導(dǎo)讀】除這些有毒重金屬的傳統(tǒng)處理技術(shù)是不經(jīng)濟(jì)的，且產(chǎn)生大量的有毒化學(xué)污泥。吸附技術(shù)對(duì)比傳統(tǒng)處理技術(shù)的主要優(yōu)點(diǎn)包括：成本低，效率高，減少化學(xué)。或生物污泥量，生物吸附劑的再生性好以及金屬能夠被回收利用。業(yè)廢棄物是強(qiáng)金屬吸附劑的豐富來(lái)源。農(nóng)業(yè)廢棄物中含有的官能團(tuán)如乙酰胺基、羥基、羰基、酚醛、酰胺基、氨基、巰基等。這些官能團(tuán)對(duì)重金屬具有親和力從。而形成金屬絡(luò)合物或螯合物。吸附過(guò)程的機(jī)制包括：化學(xué)吸附，絡(luò)合，表面吸附，通過(guò)間隙擴(kuò)散以及離子交換等。屬各方面的零散的相關(guān)信息。此外，可以改善這些吸附劑以提高效率和多重利用來(lái)加強(qiáng)在工業(yè)。這些重金屬由于其毒性、生物富集和持久性的性質(zhì)而備受關(guān)注。過(guò)去的一些災(zāi)害正是由于水產(chǎn)品中的重金屬污染造成的，比如日本甲?；廴驹斐傻乃畟R悲劇和鎘污染造成“痛病”在日本京東河的流行[26],[53]。然而活性炭成本昂貴以及在更新過(guò)程的損耗限制

　　

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