干旱区生态环境知识资源中心(Arid): Talc-graphite schist as a natural organo-mineral complex for methylene blue remediation: kinetic and isotherm study

Arid

DOI	10.1007/s42452-020-2501-1
	Talc-graphite schist as a natural organo-mineral complex for methylene blue remediation: kinetic and isotherm study
	Zayed, A. M.; Fathy, M.; Sillanpaa, M.; Wahed, M. S. M. Abdel
通讯作者	Zayed, AM
来源期刊	SN APPLIED SCIENCES
ISSN	2523-3963
EISSN	2523-3971
出版年	2020
卷号	2 期号:4
英文摘要	Talc-graphite schist (TGSH) is a natural organo-mineral complex that was derived from the regional metamorphism of organic matter-bearing calcareous clays under the lowest temperature and pressure of the green schist facies (573-632 K and 1-3 Kbars, respectively). The application of TGSH that is widely available in the Meatiq area (Eastern Desert, Egypt) was investigated for the first time ever in the remediation of methylene blue dye (MB) from aqueous solutions. The characterization of the TGSH was carried out using various techniques (XRF, XRD, SEM, FT-IR and BET surface area), and its MB removal capacity was estimated at different experimental conditions. The MB adsorption by TGSH was time- and pH- dependent process, where 120 min was sufficient enough to attain equilibrium. The MB adsorption capacity by the TGSH was directly proportional to the applied temperature, confirming that the MB adsorption process was endothermic in behavior. Based on the determination coefficients, the pseudo-second-order equation (R-2 = 0.939) explained MB adsorption data better than the first-order one (R-2 = 0.653). Meanwhile, intra-particle diffusion was not the sole controlling rate in MB removal by the TGSH. Moreover, the nonlinear regressions of Langmuir model (R2 = 0.876) explained the equilibrium data better than the other applied models (Temkin, R-2 = 0.793, and Freundlich, R-2 = 0.752). On the other hand, the estimated q(max) (maximum removal capacity) of Langmuir was 9.41 mg/g at ambient temperature. Hydrogen bonding and electrostatic interaction were the governing mechanisms of MB removal by TGSH with variable impact in accordance with the prevailing pH condition.
英文关键词	Talc-graphite schist Methylene blue removal Adsorption kinetics Adsorption isotherm Nonlinear regressions
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	ESCI
WOS记录号	WOS:000532826500228
WOS关键词	AQUEOUS-SOLUTION ; ACTIVATED CARBON ; CATIONIC DYES ; BASIC DYE ; ADSORPTION ; REMOVAL ; ORANGE ; ACID ; ADSORBENT ; NANOCOMPOSITE
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334364
作者单位	[Zayed, A. M.; Wahed, M. S. M. Abdel] Beni Suef Univ, Fac Sci, Geol Dept, Appl Mineral & Water Res Lab, Bani Suwayf, Egypt; [Fathy, M.] Egyptian Petr Res Inst, Cairo, Egypt; [Sillanpaa, M.] Lappeenranta Univ Technol, Fac Engn Sci, Dept Green Chem, Lappeenranta, Finland
推荐引用方式 GB/T 7714	Zayed, A. M.,Fathy, M.,Sillanpaa, M.,et al. Talc-graphite schist as a natural organo-mineral complex for methylene blue remediation: kinetic and isotherm study[J],2020,2(4).
APA	Zayed, A. M.,Fathy, M.,Sillanpaa, M.,&Wahed, M. S. M. Abdel.(2020).Talc-graphite schist as a natural organo-mineral complex for methylene blue remediation: kinetic and isotherm study.SN APPLIED SCIENCES,2(4).
MLA	Zayed, A. M.,et al."Talc-graphite schist as a natural organo-mineral complex for methylene blue remediation: kinetic and isotherm study".SN APPLIED SCIENCES 2.4(2020).