Synthesis of malachite@clay nanocomposite for rapid scavenging of cationic and anionic dyes from synthetic wastewater

作者: Varsha Srivastava , Mika Sillanpää

DOI: 10.1016/J.JES.2016.08.011

关键词: Congo redNanocompositeDesorptionZeta potentialMethylene blueAdsorptionChemistryInorganic chemistryCationic polymerizationNuclear chemistryLangmuirEnvironmental engineeringGeneral Environmental ScienceEnvironmental chemistryGeneral Medicine

摘要: Abstract Synthesis of malachite@clay nanocomposite was successfully carried out for the removal cationic (Methylene Blue, MB) and anionic dyes (Congo Red, CR) from synthetic wastewater. Nanocomposite characterized by TEM, SEM, FT-IR, EDS analysis zeta potential. TEM indicated that particle diameter in range 14 to 23 nm. Various important parameters viz. contact time, concentration dyes, dosage, temperature solution pH were optimized achieve maximum adsorption capacity. In case MB, decreased 99.82% 93.67% while CR, 88.55% 75.69% on increasing dye 100 450 mg/L. study confirmed higher CR acidic MB alkaline range. Kinetic revealed applicability pseudo-second-order model both dyes. Negative values ΔG0 systems suggested feasibility support spontaneous nanocomposite. showed 277.77 238.09 mg/g Langmuir capacity respectively. Desorption loaded easily with acetone. The results indicate prepared is an efficient adsorbent high aforementioned

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