亞甲基藍活性炭吸附

　　氧(yang)(yang)化(hua)(hua)(hua)鐵(tie)(tie)活(huo)性(xing)(xing)(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)是(shi)在(zai)氧(yang)(yang)化(hua)(hua)(hua)鐵(tie)(tie)浸漬(zi)活(huo)性(xing)(xing)(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)后(hou)合(he)成的(de)。通(tong)過活(huo)性(xing)(xing)(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)和(he)(he)氧(yang)(yang)化(hua)(hua)(hua)鐵(tie)(tie)活(huo)性(xing)(xing)(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)pH、ZPC和(he)(he)FTIR光(guang)譜表征。亞甲基(ji)(ji)藍(lan)通(tong)過活(huo)性(xing)(xing)(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)和(he)(he)氧(yang)(yang)化(hua)(hua)(hua)鐵(tie)(tie)活(huo)性(xing)(xing)(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)去除。在(zai)7-10的(de)pH氧(yang)(yang)化(hua)(hua)(hua)鐵(tie)(tie)活(huo)性(xing)(xing)(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)的(de)去除率(lv)高(gao)達95%(高(gao)于活(huo)性(xing)(xing)(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan))。雖(sui)然反應動力學是(shi)偽(wei)二次(ci)的(de)，但整體速(su)率(lv)由膜擴散(san)、孔擴散(san)和(he)(he)顆粒擴散(san)等多個過程(cheng)控制(zhi)。活(huo)性(xing)(xing)(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)和(he)(he)氧(yang)(yang)化(hua)(hua)(hua)鐵(tie)(tie)活(huo)性(xing)(xing)(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)分(fen)別為(wei)21.79和(he)(he)14.82 kJ / mol)亞甲基(ji)(ji)藍(lan)攝入的(de)活(huo)化(hua)(hua)(hua)能值顯示了(le)物理吸附過程(cheng)。氧(yang)(yang)化(hua)(hua)(hua)鐵(tie)(tie)活(huo)性(xing)(xing)(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)在(zai)再(zai)生研究中不斷出現(xian)≥去除亞甲基(ji)(ji)藍(lan)90%，甚至多達10次(ci)重復循環。

　　生(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)體(ti)提供新鮮空氣和(he)清潔水(shui)(shui)(shui)非常重要。因此，保持(chi)淡水(shui)(shui)(shui)資源的質量(liang)仍(reng)然是(shi)一(yi)個挑戰。當然，工業(ye)場所釋放的污(wu)(wu)泥和(he)殘(can)留物(wu)(wu)(wu)(wu)通(tong)常含有(you)(you)有(you)(you)害污(wu)(wu)染(ran)(ran)物(wu)(wu)(wu)(wu)，會惡化(hua)水(shui)(shui)(shui)質。金屬(shu)、染(ran)(ran)料(liao)、農藥等(deng)有(you)(you)害物(wu)(wu)(wu)(wu)質以及許多抗(kang)生(sheng)(sheng)(sheng)素作(zuo)為(wei)工業(ye)作(zuo)業(ye)和(he)農業(ye)徑流(liu)排放對環境構成(cheng)嚴重威脅(xie)。合(he)成(cheng)染(ran)(ran)料(liao)賦予(yu)廢(fei)水(shui)(shui)(shui)顏(yan)色，*終(zhong)會擾亂(luan)水(shui)(shui)(shui)生(sheng)(sheng)(sheng)生(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)的生(sheng)(sheng)(sheng)長活性，并負責增加(jia)化(hua)學(xue)需氧量(liang)。此外(wai)，水(shui)(shui)(shui)生(sheng)(sheng)(sheng)植(zhi)物(wu)(wu)(wu)(wu)生(sheng)(sheng)(sheng)長必須通(tong)過吸收陽(yang)光來抑(yi)制(zhi)光合(he)作(zuo)用。這些污(wu)(wu)染(ran)(ran)物(wu)(wu)(wu)(wu)也威脅(xie)到食物(wu)(wu)(wu)(wu)循環和(he)水(shui)(shui)(shui)生(sheng)(sheng)(sheng)生(sheng)(sheng)(sheng)物(wu)(wu)(wu)(wu)，因為(wei)它們會導致(zhi)突變和(he)致(zhi)癌。嘔吐、黃(huang)疸、加(jia)速(su)心率(lv)、休克和(he)組(zu)織壞死是(shi)與染(ran)(ran)料(liao)有(you)(you)關的健康風險。因此，在進入水(shui)(shui)(shui)系統之前，對含有(you)(you)染(ran)(ran)料(liao)的工業(ye)廢(fei)水(shui)(shui)(shui)進行處(chu)理(li)至關重要。混凝、氧化(hua)、吸附、納米(mi)過濾和(he)絮凝、離子交換和(he)膜處(chu)理(li)等(deng)大量(liang)物(wu)(wu)(wu)(wu)理(li)化(hua)學(xue)方法(fa)已用于從(cong)廢(fei)水(shui)(shui)(shui)和(he)工業(ye)廢(fei)水(shui)(shui)(shui)中(zhong)去除合(he)成(cheng)染(ran)(ran)料(liao)。

　　然而，活(huo)性(xing)炭(tan)(tan)已廣泛應用于水介質的凈(jing)化(hua)、氣(qi)體/固相分離(li)、催(cui)化(hua)和(he)(he)(he)電(dian)化(hua)學過程中的吸(xi)附劑。活(huo)性(xing)炭(tan)(tan)的表面特性(xing)，即膨(peng)脹的孔隙(xi)率和(he)(he)(he)高表面積，易于分離(li)，運行成本(ben)低，吸(xi)收親和(he)(he)(he)力顯著，使活(huo)性(xing)炭(tan)(tan)成為(wei)各種(zhong)應用的通用和(he)(he)(he)首選材(cai)料。為(wei)了進(jin)一步提高效率，研(yan)究了活(huo)性(xing)炭(tan)(tan)的修改和(he)(he)(he)可重用性(xing)。

　　本(ben)文(wen)簡要介紹(shao)了(le)活(huo)性(xing)(xing)(xing)(xing)炭的(de)(de)表(biao)面改(gai)性(xing)(xing)(xing)(xing)，以改(gai)善其對(dui)亞甲(jia)(jia)基藍的(de)(de)吸附親(qin)和(he)力和(he)廢(fei)(fei)吸附劑的(de)(de)再(zai)生。為了(le)在活(huo)性(xing)(xing)(xing)(xing)炭上產生更多的(de)(de)活(huo)性(xing)(xing)(xing)(xing)位點，用(yong)氧(yang)化(hua)劑修飾表(biao)面，然后用(yong)鐵前體浸漬，產生鐵浸漬活(huo)性(xing)(xing)(xing)(xing)炭。充分表(biao)征活(huo)性(xing)(xing)(xing)(xing)炭和(he)氧(yang)化(hua)鐵活(huo)性(xing)(xing)(xing)(xing)炭，研(yan)究了(le)水系統的(de)(de)亞甲(jia)(jia)基藍攝入(ru)。對(dui)于實際應用(yong)，廢(fei)(fei)吸附劑的(de)(de)可重用(yong)性(xing)(xing)(xing)(xing)是主(zhu)要的(de)(de)經(jing)濟效益，一是降低運行成本(ben)，二是解決(jue)廢(fei)(fei)吸附劑的(de)(de)處(chu)理問(wen)題，是昂貴的(de)(de)選擇和(he)資源浪(lang)費(fei)。

　　由(you)于表(biao)面(mian)氧(yang)(yang)化(hua)(hua)(hua)(hua)和鐵(tie)浸漬，活(huo)(huo)(huo)性(xing)(xing)(xing)(xing)(xing)炭(tan)的表(biao)面(mian)電荷(he)密度(pH ZPC)從7.4降(jiang)低(di)到4.3.這有助于增加氧(yang)(yang)化(hua)(hua)(hua)(hua)鐵(tie)活(huo)(huo)(huo)性(xing)(xing)(xing)(xing)(xing)炭(tan)的酸性(xing)(xing)(xing)(xing)(xing)特性(xing)(xing)(xing)(xing)(xing)，對陽離子(zi)染料(liao)(亞甲(jia)基(ji)藍(lan))在(zai)水系統中具有更高(gao)(gao)效(xiao)的吸(xi)(xi)(xi)附(fu)水平。與(yu)其(qi)對應物活(huo)(huo)(huo)性(xing)(xing)(xing)(xing)(xing)炭(tan)pH(2-10)環(huan)境溫(wen)度(298K))在(zai)有利(li)條件下(xia)，氧(yang)(yang)化(hua)(hua)(hua)(hua)鐵(tie)活(huo)(huo)(huo)性(xing)(xing)(xing)(xing)(xing)炭(tan)的亞甲(jia)基(ji)藍(lan)去除(chu)率一直很(hen)高(gao)(gao)，需要較低(di)的劑量(0.2g顯示高(gao)(gao)達(da)98%)。動(dong)力學建模(mo)表(biao)明，偽二階(jie)模(mo)型很(hen)好地解釋(shi)了(le)反應機制(zhi)，但整體吸(xi)(xi)(xi)附(fu)過程由(you)膜擴散(san)、孔擴散(san)和顆粒擴散(san)控制(zhi)。目前工作的可行性(xing)(xing)(xing)(xing)(xing)和有效(xiao)性(xing)(xing)(xing)(xing)(xing)與(yu)廢(fei)吸(xi)(xi)(xi)附(fu)劑的可重用(yong)性(xing)(xing)(xing)(xing)(xing)研究有關。通過觀察活(huo)(huo)(huo)性(xing)(xing)(xing)(xing)(xing)炭(tan)和氧(yang)(yang)化(hua)(hua)(hua)(hua)鐵(tie)活(huo)(huo)(huo)性(xing)(xing)(xing)(xing)(xing)炭(tan)的吸(xi)(xi)(xi)附(fu)/解吸(xi)(xi)(xi)，我們可以得出結論，氧(yang)(yang)化(hua)(hua)(hua)(hua)鐵(tie)活(huo)(huo)(huo)性(xing)(xing)(xing)(xing)(xing)炭(tan)比(bi)連續流(liu)動(dong)系統中使(shi)(shi)用(yong)的未改性(xing)(xing)(xing)(xing)(xing)活(huo)(huo)(huo)性(xing)(xing)(xing)(xing)(xing)炭(tan)更合適。氧(yang)(yang)化(hua)(hua)(hua)(hua)鐵(tie)活(huo)(huo)(huo)性(xing)(xing)(xing)(xing)(xing)炭(tan)在(zai)10次循環(huan)后重復使(shi)(shi)用(yong)，脫除(chu)率高(gao)(gao)達(da)90%，反映其(qi)高(gao)(gao)再生能力。氧(yang)(yang)化(hua)(hua)(hua)(hua)鐵(tie)活(huo)(huo)(huo)性(xing)(xing)(xing)(xing)(xing)炭(tan)是從廢(fei)水中去除(chu)陽離子(zi)污染物的優質吸(xi)(xi)(xi)附(fu)劑材料(liao)。