交联壳聚糖微球的制备及其对水中芳香族羧基化合物的吸附性能研究
Research on preparation of crosslinked chitosan microspheres and its adsorption properties for aromatic carboxyl compounds in water
-
摘要: 以壳聚糖为原料、液体石蜡为分散剂、甲醛为预交联剂、环氧氯丙烷为交联剂,采用反相悬浮法制备交联壳聚糖微球,并研究其对水中2-羟基-3-萘甲酸、α-萘甲酸、苯甲酸3种芳香族羧基化合物的吸附性能.结果表明:1)在弱酸性介质(pH=3~4)中,交联壳聚糖微球对上述3种芳香族羧基化合物的吸附速度快、吸附容量大,当pH=3.5,温度288 K条件下,其饱和吸附容量分别为702.0 mg·g-1,320.1 mg·g-1,176.3 mg·g-1.2)其吸附过程符合Lagergren二级动力学方程,吸附反应较容易发生;吸附等温模型符合Langmuir等温吸附方程,该吸附过程主要为单分子层吸附,吸附过程是一个以物理吸附为主,同时伴有化学作用的自发、放热、熵减过程.3)交联壳聚糖微球具有较好的循环再生能力,经过8次循环再生过程,其吸附容量仍能稳定在97%以上.Abstract: Using chitosan as raw material, liquid paraffin as dispersant, formaldehyde as pre-crosslinking agent and epichlorohydrin as crosslinking agent, crosslinked chitosan microspheres were prepared by reversed-phase suspension method. The adsorption properties of crosslinked chitosan microspheres on aromatics carboxy compounds in water were studied. The results showed that it had fast adsorption rate and large adsorption capacity,the saturated adsorption capacity of crosslinked chitosan microspheres for 2-hydroxy-3-naphthoic acid, α-naphthoic acid and benzoic acid were 702.0 mg·g-1, 320.1 mg·g-1, 176.3 mg·g-1 at the pH value of 3.5 and 288 K, respectively. The adsorption process conformed to the Lagergren-second-order kinetic equation, and the adsorption isotherm model conformed to the Langmuir isotherm adsorption equation, which was mainly monolayer adsorption. The adsorption process was a spontaneous, exothermic and entropic reduction process with physical adsorption and chemical action. The crosslinked chitosan microspheres had good recycling ability. After 8 cycles of regeneration, the adsorption capacity could still be stabilized above 97%.
-
-
[1]
CHEN L W,MA J,LI X C,et al.A novel Fenton-like system with hydrogen peroxide,hydroxylamine and Fe(Ⅲ) for the degradation of benzoic acid[J].Journal of Natural Science of Heilongjiang University,2012,29(1):111.
-
[2]
于泓,王艳,原小寓.直接电导检测-离子排斥色谱法测定芳香族羧酸[J].分析化学,2008,36(3):393.
-
[3]
王晓君,刘吉平.苯甲酸的合成工艺[J].化工进展,2011(S1):603.
-
[4]
董影杰,于泓,张小东.芳香族羧酸的高效液相色谱法测定及其在药品分析中的应用[J].分析测试学报,2010,29(6):564.
-
[5]
郑凤英,李顺兴,钱沙华,等.水杨酸和5-磺基-水杨酸表面修饰纳米TiO2吸附去除对硝基苯酚[J].环境科学学报,2007,27(1):64.
-
[6]
徐红燕,周仕林,陶红,等.废水中邻苯二甲酸酯降解的研究进展[J].上海理工大学学报,2010,32(5):418.
-
[7]
LAABD M,CHAFAI H,ESSEKRI A,et al.Single and multi-component adsorption of aromatic acids using an ecofriendly polyaniline-based biocomposite[J].Sustainable Materials and Technologies,2017,12:35.
-
[8]
周艳,施文健,杨琴淋.717型阴离子交换树脂吸附水溶性芳香族有机污染物研究[J].离子交换与吸附,2012,28(4):289.
-
[9]
COKGOR E U,INSEL G,KATIPOGLU T,et al.Biodegradation kinetics of peptone and 2,6-dihydroxybenzoic acid by acclimated dual microbial culture[J].Bioresource Technology,2011,102(2):567.
-
[10]
王海燕,蒋展鹏,余刚,等.光电协同催化氧化苯甲酸的试验研究[J].环境科学,2004,25(1):25.
-
[11]
张丽,朱晓东,张燕峰,等.微波强化Fenton氧化处理邻氨基苯甲酸废水[J].环境科学研究,2009,22(5):516.
-
[12]
孙志勇,严彪,王爱民,等.壳聚糖/CTAB复合改性膨润土对活性红X-3B的吸附[J].环境科学学报,2017,37(2):617.
-
[13]
陶菡,魏万之,张梅芳,等.串联式压电传感技术用于壳聚糖脱乙酰度测定及其对铜(Ⅱ)离子吸附的研究[J].分析测试学报,2009,28(6):729.
-
[14]
VAKILI M,RAFATULLAH M,SALAMATINIA B,et al.Application of chitosan and its derivatives as adsorbents for dye removal from water and wastewater:a review[J].Carbohyd Polym,2014,113:115.
-
[15]
程华丽,李瑾,王涵,等.壳聚糖/蒙脱土插层复合物对活性红染料的吸附动力学及解吸性能[J].环境化学,2014,33(1):115.
-
[16]
SHEKHAWAT A,KAHU S,SARAVANAN D,et al.Synergistic behaviour of ionic liquid impregnated sulphate-crosslinked chitosan towards adsorption of Cr(Ⅵ)[J].International Journal of Biological Macromolecules,2015,80:615.
-
[17]
NGAH W S W,TEONG L C,HANAFIAH M A K M.Adsorption of dyes and heavy metal ions by chitosan composites:a review[J].Carbohyd Polym,2011,83(4):1446.
-
[18]
林越呈,王宏鹏,龚金炎,等.改性壳聚糖微球制备及其对阴离子染料的吸附行为研究[J].高校化学工程学报,2017,31(2):470.
-
[19]
NISHAD P A,BHASKARAPILLAI A,VELMURUGAN S.Enhancing the antimony sorption properties of nano titania-chitosan beads using epichlorohydrin as the crosslinker[J].Journal of Hazardous Materials,2017,334:160.
-
[20]
MORAIS W A,FERNANDES A L P,DANTAS T N C,et al.Sorption studies of a model anionic dye on crosslinked chitosan[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,2007,310(1-3):20.
-
[21]
ZHANG C,WEN H,HUANG Y,et al.Adsorption of anionic surfactants from aqueous solution by high content of primary amino crosslinked chitosan microspheres[J].International Journal of Biological Macromolecules,2017,97:635.
-
[22]
WAN N W,HANAFIAH M A,YONG S S.Adsorption of humic acid from aqueous solutions on crosslinked chitosan-epichlorohydrin beads:kinetics and isotherm studies[J].Colloids & Surfaces B Biointerfaces,2008,65(1):18.
-
[23]
LIU B,LV X,MENG X,et al.Removal of Pb(Ⅱ) from aqueous solution using dithiocarbamate modified chitosan beads with Pb(Ⅱ) as imprinted ions[J].Chemical Engineering Journal,2013,220(6):412.
-
[24]
KAHU S,SHEKHAWAT A,SARAVANAN D,et al.Stannic chloride impregnated chitosan for defluoridation of water[J].International Journal of Biological Macromolecules,2017.
-
[25]
Ge H,Chen H,Huang S.Microwave preparation and properties of O-crosslinked maleic acyl chitosan adsorbent for Pb2+ and Cu2+[J].J Appl Polym Sci,2012,125:2716.
-
[26]
ZHU T,ZHU T,GAO J,et al.Enhanced adsorption of fluoride by cerium immobilized cross-linked chitosan composite[J].Journal of Fluorine Chemistry,2017,194:80.
-
[27]
ABDUL-ZAHIR,ASLAM Z,KAMAL M S,et al.Development of novel cross-linked chitosan for the removal of anionic Congo red dye[J].Journal of Molecular Liquids,2017,244.
-
[28]
HUANG R,LIU Q,HUO J,et al.Adsorption of methyl orange onto protonated cross-linked chitosan[J].Arabian Journal of Chemistry,2017,10(1):24.
-
[29]
杨健,辛晓东,魏琴,等.改性膨润土对水中苯甲酸的吸附[J].济南大学学报(自然科学版),2012,26(3):241.
-
[30]
WANG B,LIAO L,HUANG Q,et al.Adsorption behaviors of benzonic acid by carboxyl methyl konjac glucomannan gel micropheres cross-linked with Fe3+[J].Journal of Chemical & Engineering Data,2011,57(1):72.
-
[31]
刘福强,陈金龙,李爱民,等.超高交联吸附树脂对苯甲酸的吸附研究[J].离子交换与吸附,2002,18(6):522.
-
[1]
计量
- PDF下载量: 3
- 文章访问数: 1332
- 引证文献数: 0