功能材料
功能材料
공능재료
JOURNAL OF FUNCTIONAL MATERIALS
2015年
4期
4020-4024
,共5页
刘心荷%李杨%孟祥红%刘炳杰
劉心荷%李楊%孟祥紅%劉炳傑
류심하%리양%맹상홍%류병걸
壳聚糖树脂%黄原酸化%改性%棒曲霉素%吸附
殼聚糖樹脂%黃原痠化%改性%棒麯黴素%吸附
각취당수지%황원산화%개성%봉곡매소%흡부
chitosan resin%xanthated%modification%patulin%adsorption
以壳聚糖为吸附剂,戊二醛作为交联剂,采用反相悬浮交联法制备球状壳聚糖树脂,利用二硫化碳作为改性剂,在碱性条件下对壳聚糖树脂进行黄原酸化改性,制备成交联黄原酸化壳聚糖树脂(cross-linked xanthated chitosan resin,CXCR).对 CXCR进行红外表征,并研究了其对水溶液中棒曲霉素的吸附性能.结果表明,CXCR 在棒曲霉素初始浓度为8 mg/L,CXCR 用量为1 g/L,溶液 pH 值=4,25℃下吸附16 h,吸附量可达6.53 mg/g,可有效地吸附水溶液中的棒曲霉素.CXCR 对棒曲霉素的吸附符合拟二级动力学模型;吸附热力学符合 Freundlich 吸附等温线模型.CXCR 有望作为一种新型的材料用于棒曲霉素的吸附,具有广阔的应用前景.
以殼聚糖為吸附劑,戊二醛作為交聯劑,採用反相懸浮交聯法製備毬狀殼聚糖樹脂,利用二硫化碳作為改性劑,在堿性條件下對殼聚糖樹脂進行黃原痠化改性,製備成交聯黃原痠化殼聚糖樹脂(cross-linked xanthated chitosan resin,CXCR).對 CXCR進行紅外錶徵,併研究瞭其對水溶液中棒麯黴素的吸附性能.結果錶明,CXCR 在棒麯黴素初始濃度為8 mg/L,CXCR 用量為1 g/L,溶液 pH 值=4,25℃下吸附16 h,吸附量可達6.53 mg/g,可有效地吸附水溶液中的棒麯黴素.CXCR 對棒麯黴素的吸附符閤擬二級動力學模型;吸附熱力學符閤 Freundlich 吸附等溫線模型.CXCR 有望作為一種新型的材料用于棒麯黴素的吸附,具有廣闊的應用前景.
이각취당위흡부제,무이철작위교련제,채용반상현부교련법제비구상각취당수지,이용이류화탄작위개성제,재감성조건하대각취당수지진행황원산화개성,제비성교련황원산화각취당수지(cross-linked xanthated chitosan resin,CXCR).대 CXCR진행홍외표정,병연구료기대수용액중봉곡매소적흡부성능.결과표명,CXCR 재봉곡매소초시농도위8 mg/L,CXCR 용량위1 g/L,용액 pH 치=4,25℃하흡부16 h,흡부량가체6.53 mg/g,가유효지흡부수용액중적봉곡매소.CXCR 대봉곡매소적흡부부합의이급동역학모형;흡부열역학부합 Freundlich 흡부등온선모형.CXCR 유망작위일충신형적재료용우봉곡매소적흡부,구유엄활적응용전경.
Cross-linked xanthated chitosan resin was prepared by the method of inverse suspension cross-linking using glutaraldehyde as cross-linking agent and carbon disulfide as modification agent.The addition of thiol group on cross-linked chitosan enhanced its interaction with patulin in aqueous solution and increased the ad-sorption ability of CXCR for patulin.The adsorption mechanism of CXCR for patulin was characterized by FT-IR.The influence of various parameters on the adsorption capacity of CXCR for patulin was investigated.The results showed that the adsorption capacity was 6.53 mg/g when 8 mg/L patulin was adsorbed at pH=4,25 ℃for 1 6 h by adding 1 g/L CXCR.The adsorption process was found to follow pseudo-second order kinetics mod-el.The experimental data fitted Freundlich adsorption isotherm model.It indicated that CXCR is a very promis-ing biosorbent for the adsorption of patulin from aqueous solutions.