自1979年以來，甲基叔丁基醚(mi)(MTBE)已(yi)被用作汽油(you)中鉛辛烷(wan)值(zhi)增(zeng)強的替代品。氧(yang)化燃(ran)料和汽油(you)改造計劃在(zai)20世紀90年代得到(dao)了廣泛的應用。作為(wei)(wei)汽油(you)中的氧(yang)化合(he)物，MTBE清潔劑(ji)可以幫助汽油(you)燃(ran)燒。不幸的是，MTBE由于地下儲罐(guan)泄漏，污(wu)染(ran)地下水已(yi)成為(wei)(wei)許多地方(fang)的主要問題。

　　MTBE主要被乙醇取代的(de)汽油(you)添加(jia)劑已被禁止或限制。與其(qi)它(ta)石油(you)成(cheng)分(fen)相比，由于其(qi)在水中(zhong)的(de)高溶解度(du)，當它(ta)通(tong)過汽油(you)釋放境時(shi)，MTBE遠離原始(shi)泄漏源。此外，由于MTBE自(zi)然分(fen)解在土壤中(zhong)較小(xiao)，因此可能繼續作(zuo)為(wei)地(di)下水的(de)污染源。建議飲(yin)用水MTBE水平應(ying)低于20-40億(ppb)。許多(duo)國(guo)家的(de)水平要低得多(duo)。

　　用活性炭處理MTBE

　　MTBE其(qi)物理化學特性(xing)使(shi)其(qi)比其(qi)他常見的有機污染物更難(nan)從水中去(qu)除(chu)(chu)。空氣剝離、生物處理和(he)氧化等治(zhi)療方(fang)法(fa)可能(neng)在一(yi)定(ding)程度上發揮(hui)作用(yong)(yong)，但對于小使(shi)用(yong)(yong)點(dian)(POU)和(he)進入點(dian)(POE)系統通(tong)常成本高。活性(xing)炭能(neng)有效(xiao)去(qu)除(chu)(chu)MTBE，但是由(you)于MTBE水中溶解度高，可能(neng)難(nan)以去(qu)除(chu)(chu)。因(yin)此，使(shi)用(yong)(yong)正(zheng)確類型的活性(xing)炭來有效(xiao)清(qing)除(chu)(chu)成本至關重要。

　　在POU和(he)(he)POE椰(ye)(ye)殼(ke)活(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)和(he)(he)煤質活(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)用于(yu)水(shui)處理。椰(ye)(ye)殼(ke)活(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)有更(geng)多的(de)(de)(de)微孔(kong)(kong)。微孔(kong)(kong)的(de)(de)(de)定義為(wei)直徑小于(yu)2納米的(de)(de)(de)孔(kong)(kong)。煤質活(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)微孔(kong)(kong)較少(shao)，但較大(da)的(de)(de)(de)孔(kong)(kong)稱為(wei)中孔(kong)(kong)和(he)(he)大(da)孔(kong)(kong)。椰(ye)(ye)殼(ke)活(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)中微孔(kong)(kong)的(de)(de)(de)量(liang)約為(wei)煤質活(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)的(de)(de)(de)50%。椰(ye)(ye)殼(ke)活(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)中有大(da)量(liang)的(de)(de)(de)微孔(kong)(kong)，使(shi)其吸附更(geng)高(gao)MTBE的(de)(de)(de)能力。此外(wai)，椰(ye)(ye)殼(ke)活(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)具有較高(gao)的(de)(de)(de)保(bao)持性(xing)(xing)(xing)(xing)。高(gao)保(bao)持性(xing)(xing)(xing)(xing)保(bao)證當流入時流入MTBE濃度波(bo)動(dong)時，MTBE活(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)不會脫(tuo)落或脫(tuo)附。椰(ye)(ye)殼(ke)活(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)也比(bi)較純，97%含碳量(liang)為(wei)98%，

　　為了(le)克服煤質活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)(tan)(tan)的一些(xie)缺陷(xian)，金(jin)豐活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)(tan)(tan)優(you)(you)化了(le)煤質活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)(tan)(tan)，以獲得更好(hao)的效果MTBE吸(xi)附。與椰殼(ke)活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)(tan)(tan)相(xiang)比(bi)，優(you)(you)化活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)(tan)(tan)比(bi)以前重30%，需要購買(mai)30%的活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)(tan)(tan)來填充(chong)給(gei)定的體(ti)積。測量水中的活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)(tan)(tan)，以比(bi)較(jiao)不同的活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)(tan)(tan)MTBE飽和容(rong)(rong)量。與椰殼(ke)活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)(tan)(tan)相(xiang)比(bi)，煤質活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)(tan)(tan)被認為是水處理行(xing)業(ye)的標準(zhun)MTBE煤基活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)(tan)(tan)優(you)(you)化數據顯(xian)示，水中低MTBE椰殼(ke)活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)(tan)(tan)濃度高于煤質活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)(tan)(tan)2.5倍的MTBE容(rong)(rong)量。此外，椰殼(ke)活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)(tan)(tan)MTBE比(bi)優(you)(you)化煤基活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)(tan)(tan)容(rong)(rong)量高1.8倍。