Chitosan/polyvinyl alcohol/hydroxyapatite nanocomposite membrane for the efficient adsorption of Congo red anionic dye

被引：11
作者：
Zeynali, Vahid [1 ]
Mousavi, Seyed Mahmoud [1 ]
Saljoughi, Ehsan [1 ]
Kiani, Shirin [1 ]
Sillanpaa, Mika [2 ,3 ,4 ,5 ]
机构：
[1] Ferdowsi Univ Mashhad, Fac Engn, Chem Engn Dept, Mashhad, Iran
[2] Univ Johannesburg, Sch Min Met & Chem Engn, Dept Chem Engn, Doornfontein, South Africa
[3] Univ Kebangsaan Malaysia, Fac Sci & Technol, Dept Appl Phys, Bangi, Malaysia
[4] Zhejiang Rongsheng Environm Protect Paper Co LTD, Hangzhou, Zhejiang, Peoples R China
[5] Chandigarh Univ, Univ Ctr Res & Dev, Dept Civil Engn, Mohali, Punjab, India
来源：
POLYMER COMPOSITES | 2023年 / 44卷 / 07期
关键词：
adsorption; chitosan; membranes; nanocomposites; separation techniques; ONLINE SPECTROPHOTOMETRIC METHOD; HEAVY-METAL IONS; AQUEOUS-SOLUTION; METHYL-ORANGE; OPERATION PARAMETERS; COMPOSITE MEMBRANE; CHITOSAN BEADS; WASTE-WATER; REMOVAL; HYDROXYAPATITE;
D O I：
10.1002/pc.27393
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
This work focused on fabricating a novel chitosan/polyvinyl alcohol/ hydroxyapatite (CPH) nanocomposite membrane and its application in removing the Congo red (CR) from aqueous solutions. After proper characterization of the chitosan/polyvinyl alcohol/hydroxyapatite adsorptive membrane, adsorption tests were carried out on the optimum nanocomposite membrane containing 1 wt% hydroxyapatite. The impact of temperature, contact time, initial dye concentration, adsorbent dosage, and pH was investigated. Results of isotherm and kinetic investigation revealed that Langmuir isotherm and pseudo-second order kinetics best fitted experimental results with R-2 values of 0.995. A relatively high adsorption capacity of 491 mg/g, higher than that of activated carbon, was achieved.
引用
收藏
页码：4227 / 4242
页数：16
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