壳聚糖-g-石墨烯/羟基磷灰石复合材料对水溶液中铬的吸附

IF 0.5 4区地球科学 Q4 Earth and Planetary Sciences

Indian Journal of Geo-Marine Sciences Pub Date : 2022-05-01 DOI:10.56042/ijms.v51i05.65571

V. Geethaa, S. Lathab, T. Gomathic, S. Pavithrac, P. Sudha

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引用次数: 0

摘要

石墨烯、羟基磷灰石和壳聚糖作为吸附剂去除废水中铬(VI)的聚合物复合材料的制备和表征。FTIR和XRD研究支持了复合材料的生产。表面形貌和热稳定性分析涉及热重分析和扫描电镜研究。通过不同的接触时间、吸附剂剂量和ph值，进行了间歇吸附实验，以确定吸附剂的吸附效果。在Langmuir和Freundlich等温线拟合平衡数据后，采用准一级和二级动力学模型对吸附过程进行了动力学研究。研究结果表明，壳聚糖接枝石墨烯/羟基磷灰石(CS-g-Gr/HA)复合材料对Cr(VI)的吸附采用准二级动力学。

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Adsorption of chromium from aqueous solution using Chitosan-g-Graphene /Hydroxyapatite composite

The preparation and characterisation of a polymeric composite incorporating graphene, hydroxyapatite, and chitosan as an adsorbent to remove chromium (VI) from wastewater. The FTIR and XRD studies supported the composite's production. Analysis of surface morphology and heat stability involved TGA and SEM studies. A batch adsorption was run to determine the efficacy of the adsorbent by varying contact time, adsorbent dose, and pH. The kinetics of the adsorption process were examined using pseudo-first and second order kinetic models after the equilibrium data had been fitted with the Langmuir and Freundlich isotherms. The findings showed that pseudo second order kinetics was utilised for the adsorption of Cr(VI) onto chitosan-grafted graphene/hydroxyapatite (CS-g-Gr/HA) composite.

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来源期刊

Indian Journal of Geo-Marine Sciences 地学-海洋学

CiteScore

1.50

自引率

0.00%

发文量

审稿时长

1.7 months

期刊介绍： Started in 1972, this multi-disciplinary journal publishes full papers and short communications. The Indian Journal of Geo-Marine Sciences, issued monthly, is devoted to the publication of communications relating to various facets of research in (i) Marine sciences including marine engineering and marine pollution; (ii) Climate change & (iii) Geosciences i.e. geology, geography and geophysics. IJMS is a multidisciplinary journal in marine sciences and geosciences. Therefore, research and review papers and book reviews of general significance to marine sciences and geosciences which are written clearly and well organized will be given preference.