首页|改性蔗渣纤维素-海藻酸钙-膨润土微球制备及吸附

改性蔗渣纤维素-海藻酸钙-膨润土微球制备及吸附

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  • 国家科技期刊平台
  • NETL
  • NSTL
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以海藻酸钠、硅烷改性蔗渣纤维素为网络框架,膨润土为吸附单元,采用金属离子交联法联合物理包载法制备改性蔗渣纤维素-海藻酸钙-膨润土微球,研究其吸附亚甲基蓝,并阐述吸附机理.采用FT-IR(红外光谱)、SEM(扫描电镜)、BET(比表面积)、XRD(X射线衍射)和TGA(热重分析)分别对微球结构、形貌、孔隙结构、晶相和热性能进行表征.吸附结果显示微球对亚甲基蓝吸附符合准二级吸附动力学模型和Langmuir等温吸附模型,对亚甲基蓝饱和吸附量为523.56 mg/g.经过吸附-脱附5次后,微球吸附能力为85.44％.微球为类球形,表面有丰富的微介孔结构,微球结晶度较好,耐热性能较好,表明微球作为新型无机-有机复合吸附剂,为用于有机染料废水处理提供新思路.
Preparation and adsorption of modified bagasse cellulose-calcium alginate-bentonite microspheres
Modified bagasse cellulose-calcium alginate-bentonite microspheres were prepared by metal ion crosslinking method combined with physical encapsulation method,with sodium alginate and modified bagasse cellulose as the network framework and bentonite as the adsorption unit.The microspheres adsorption propertie of methylene blue was studied and the adsorption mechanism was explored.The structure,morphology,pore structure,crystal phase and thermal performance of microspheres were characterized by FT-IR,SEM,BET,XRD and TGA,respectively.The adsorption results show that the adsorption process of methylene blue by microspheres conform to pseudo-second-order adsorption kinetic model and Langmuir isothermal adsorption mode,with the maximum adsorption capacity of 523.56 mg/g for methylene blue.After five times of adsorption-desorption,the adsorption capacity of microspheres is 85.44％.The microspheres are spherical-like with abundant micro-mesoporous structures on the surface.The microspheres have good crystallinity and heat resistance.The experimental results show that the microspheres,as a new type of inorganic-organic composite adsorbent,can provide new ideas for treating organic dye wastewater.

silane modified bagasse cellulosesodium alginatebentoniteadsorptionmethylene blue

蔡杰慧、杨英全、李致宝、郑燕菲、莫月香

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广西民族师范学院化学与生物工程学院,广西崇左 532200

南方锰业集团有限责任公司崇左分公司,广西崇左 532200

硅烷改性蔗渣纤维素 海藻酸钠 膨润土 吸附 亚甲基蓝

广西壮族自治区重点研发计划广西壮族自治区高等学校中青年教师科研基础能力提升项目广西壮族自治区高等学校中青年教师科研基础能力提升项目广西壮族自治区高等学校中青年教师科研基础能力提升项目广西壮族自治区高等学校中青年教师科研基础能力提升项目崇左市科技计划崇左市科技计划广西民族师范学院科研项目广西民族师范学院科研项目广西民族师范学院科研项目广西壮族自治区一流本科专业建设点制药工程项目

桂科AB212200272021KY07732022KY07682022KY07692023KY0797崇科攻2022ZC120崇科2022060832020YB0112021YB0362021YB038

2024

10.3969/j.issn.1005-9954.2024.05.007

化学工程
华陆工程科技有限责任公司

化学工程

CSTPCD北大核心
影响因子：0.438
ISSN：1005-9954
年,卷(期)：2024.52(5)
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