有机改性的新疆蛭石在造纸黑液处理中的应用研究  

Research on Organic Modified Xinjiang Vermiculite in Black Liquor Treatment

作　　者：宋海明[1] 张宝述[1] 孙红娟[2] 孙维义[3] 宋绵新[1] 彭同江[2] 

机构地区：[1]西南科技大学先进建筑材料四川省重点实验室,四川绵阳621010 [2]西南科技大学矿物材料与应用研究所,四川绵阳621010 [3]西南科技大学环境与资源学院,四川绵阳621010

出　　处：《西南科技大学学报》2008年第3期42-46,共5页Journal of Southwest University of Science and Technology

基　　金：国家自然科学基金(40502008);四川省应用基础项目(05JY029-008)

摘　　要：X射线衍射谱(XRD)和红外光谱(FT-IR)分析表明,新疆蛭石能与十六烷基三甲基溴化铵(HDTMAB)反应制得层间距为4.850 nm的有机蛭石。通过对造纸黑液的处理实验,探讨了温度、溶液pH值、吸附时间和有机蛭石的用量对色度去除率的影响,对比了有机蛭石、蛭石原矿、钠化改性蛭石和活性炭的吸附效果。结果表明:该有机蛭石对造纸黑液的色度和COD均有较高的去除率,当pH=4,用量为20 g/L,中速搅拌常温吸附60 min时,色度去除率达到92.80%,COD的含量也由12430 mg/L下降到110 mg/L,处理效果接近活性炭,明显好于蛭石原矿和钠化改性蛭石。Xinjiang vermiculite modified by HDTMAB can form organic vermiculite with 4.850 nm layer distance, charactered by XRD and FT-IR. Through black liquor treatment by organic vermiculite experiments, the influence of temperature, pH value, reaction time and organic vermiculite dosage for chroma removal rate were discussed, and the absorption effect of organic vermiculite, sodium modified vermiculite were compared with raw vermiculite and active carbon also. The results show that there are higher removal rate of organic vermiculite in black liquor treatment. When pH = 4, organic vermiculite dosage was 20 g/L, adsorbing time 60 min at room temperature and under moderate speed stirring situation, the chroma removal rate reaches 92.80% , and the content of COD declines 110 mg/L from 12430 mg/L, and the effect of organic vermiculite gets on towards active carbons but much better than raw verinieulite and sodium-vermiculite.

关 键 词：蛭石 有机改性 十六烷基三甲基溴化铵 造纸黑液 色度 COD 

分 类 号：P578.963[天文地球—矿物学]