CAJ | 학술논문

以六亚甲基双吡啶盐(HEMBP)为改性剂对膨润土(B)进行改性,利用XRD,BET,FT-IR和SEM对所得有机改性膨润土(HEMBP-B)的结构进行表征,并优化了改性条件,发现在HEMBP吡啶阳离子添加量为1.0 CEC,液固比(L/S)为50 mL:1 g,时间t为3 h,温度T为60℃,pH为6.26(自然值)的改性条件下,HEMBP在膨润土上的吸附量最大并达到平衡.同时,以该条件下制备的HEMBP-B为吸附剂,在T为45℃,t为2.5 h,pH为6.46(自然值)时,HEMBP-B对初始浓度为50 mg?L?1苯酚溶液的去除率可达80%左右,且吸附等温线符合Freundlich方程.该研究不仅丰富了处理含酚废水的吸附剂种类,而且也为短链吡啶盐改性黏土在污水处理方面的应用提供了参考依据.
이륙아갑기쌍필정염(HEMBP)위개성제대팽윤토(B)진행개성,이용XRD,BET,FT-IR화SEM대소득유궤개성팽윤토(HEMBP-B)적결구진행표정,병우화료개성조건,발현재HEMBP필정양리자첨가량위1.0 CEC,액고비(L/S)위50 mL:1 g,시간t위3 h,온도T위60℃,pH위6.26(자연치)적개성조건하,HEMBP재팽윤토상적흡부량최대병체도평형.동시,이해조건하제비적HEMBP-B위흡부제,재T위45℃,t위2.5 h,pH위6.46(자연치)시,HEMBP-B대초시농도위50 mg?L?1분분용액적거제솔가체80%좌우,차흡부등온선부합Freundlich방정.해연구불부봉부료처리함분폐수적흡부제충류,이차야위단련필정염개성점토재오수처리방면적응용제공료삼고의거.
A novel organobentonite (HEMBP-B) was prepared by modifying the bentonite (B) with hexamethylene bis-pyridine dibromides (HEMBP), and its structure was characterized by XRD, BET, FT-IR and SEM. At the same time, the modification conditions were optimized. The maximum adsorbed amount and adsorption equilibrium of HEMBP on bentonite appear when during modification the dosage of pyridine cation in HEMBP is 1.0 CEC, L/S = 50 mL:1 g, t = 3 h, T = 60℃, pH = 6.26 (natural). In addition, the effects of various factors on the adsorption of phenol by HEMBP-B were studied. The results show that the removal ratio of phenol from the phenol contenting solution with original phenol concentration of 50 mg?L?1 can reach about 80%when the dosage of pyridine cation in the used HEMBP is 1.0 CEC, and the removing conditions are T=45℃, t = 2.5 h and pH = 6.46 (natural). Besides, it was found that the Freundlich model can describe the adsorption isotherm well. This study not only enriches the kinds of absorbent, but also provides reference for the wastewater treatment applications of clay modified by short chain pyridine salts.