LNC/MMT纳米复合材料处理高浓度味精废水的研究

Study on treatment of high concentration monosodium glutamate wastewater with LNC/MMT nanocomposite

以木质纤维素(LNC)、蒙脱土(MMT)为原料,采用插层-聚合法制备木质纤维素/蒙脱土纳米复合材料(LNC/MMT)。利用SEM、EDS、XRD与FT-IR对LNC/MMT进行表征。结果表明,LNC中—OH、C—O、C—O—C键与MMT中—COOH、Si—O、Al—O键发生络合反应,MMT晶体结构遭到破坏,形成了插层-剥离型LNC/MMT。在处理温度为40℃、处理时间为6 h、处理剂质量为0.1 g时,LNC/MMT处理味精废水(MSGW)时对SS、COD及NH_(3)-N的去除量达到最大,分别为199.460、112 905、25 829 mg/L。

Lignocellulose/montmorillonite(LNC/MMT) composites are prepared by intercalation-polymerization method with lignocellulose(LNC) and montmorillonite(MMT) as feedstocks, and are characterized by SEM,EDS,XRD and FT-IR.It is shown that —OH,C—O,C—O—C bonds in LNC are complexed with —COOH,Si—O,Al—O bonds in MMT,and the crystal structure of MMT has been destroyed to form LNC/MMT.The removal amount of SS,COD and NH_(3)-N reach the maximum, which are 199.460,112 905 and 25 829 mg·L,respectively when the treatment temperature is 40℃,treatment time is 6 h, and LNC/MMT dosage is 0.1 g.