Adsorption studies on the removal of Malachite Green from aqueous solutions onto halloysite nanotubes
Source abstract
Abstract
Abstract Halloysite nanotubes (HNTs) were used as nano-adsorbents for removal of the cationic dye, Malachite Green (MG), from aqueous solutions. The adsorption of the dye was studied with batch experiments. The natural HNTs used as adsorbent in this work were initially characterized by FT-IR and TEM. The effects of adsorbent dose, initial pH, temperature, initial dye concentration and contact time were investigated. Adsorption increased with increasing adsorbent dose, initial pH, and temperature. Equilibrium was rapidly attained after 30 min of contact time. Pseudofirst-order, pseudo-second-order and intraparticle diffusion models were considered to evaluate the rate parameters. The adsorption followed pseudo-second-order kinetic model with correlation coefficients greater than 0.999. The factors controlling adsorption process were also calculated and discussed. The maximum adsorption capacity of 99.6 mg g −1 of MG was achieved in pH = 9.5. Thermodynamic parameters of Δ G° , Δ H° and ΔS° indicated the adsorption process was spontaneous and endothermic.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Clay minerals and soil interactions · Iron oxide chemistry and applications · Adsorption and biosorption for pollutant removal
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (37)
Show source-provided references
1. Optimization of activated carbon fiber reparation from Kenaf using K2HPO4 as chemical activator for adsorption of phenolic compounds10.1016/j.biortech.2009.07.074 ↗
2. Sorption of acid red 57 from aqueous solution onto sepiolite10.1016/j.jhazmat.2004.08.003 ↗
3. Adsorption kinetics and thermodynamics of an anionic dye onto sepiolite10.1016/j.micromeso.2006.12.007 ↗
4. Recent developments in polysaccharide-based materials used as adsorbents in wastewater treatment10.1016/j.progpolymsci.2004.11.002 ↗
5. Adsorption kinetics of methyl violet onto perlite10.1016/S0045-6535(02)00629-X ↗
6. Kinetics and mechanism of removal of methylene blue by adsorption onto perlite10.1016/j.jhazmat.2004.03.003 ↗
7. Adsorption kinetics of maxilon blue GRL onto sepiolite from aqueous solutions10.1016/j.cej.2006.08.016 ↗
8. Adsorption of Methylene Blue onto activated carbon produced from steam activated bituminous coal: a study of equilibrium adsorption Isotherm10.1016/j.cej.2006.08.015 ↗
9. Caged multiwalled carbon nanotubes as the adsorbents for affinity-based elimination of ionic dyes10.1021/es049554i ↗
10. Adsorption studies on the removal of Vertigo Blue 49 and Orange DNA13 from aqueous solutions using carbon slurry developed from a waste material10.1016/j.jcis.2007.06.063 ↗
11. Adsorption of basic dyes onto MCM-4110.1016/j.chemosphere.2006.01.024 ↗
12. Photocatalytic degradation of organic dyes in the presence of nanostructured titanium dioxide: influence of the chemical structure of dyes10.1016/j.molcata.2010.05.023 ↗
13. Application of microalga Chlamydomonas sp. for biosorptive removal of a textile dye from contaminated water: modelling by a neural network10.1080/09593330903370018 ↗
14. Optimization of photocatalytic treatment of dye solution on supported TiO2 nanoparticles by central composite design: intermediates identification10.1016/j.jhazmat.2010.05.096 ↗
15. Photocatalytic decolorization and mineralization of orange dyes on immobilized titanium dioxide nanoparticles10.2166/wst.2010.438 ↗
16. Adsorption of Malachite Green onto Pithophora sp., a fresh water algae: equilibrium and kinetic modeling10.1016/j.procbio.2005.01.007 ↗
17. Effects of synthesis temperature on the microstructures and basic dyes adsorption of titanate nanotubes10.1016/j.jhazmat.2007.04.129 ↗
18. Adsorption of dyes from aqueous solutions or suspensions with clay nano-adsorbents10.1016/j.seppur.2007.07.007 ↗
19. Liu, R., Zhang, B., Mei, D, Zhang, H, Liu, J., in press. Adsorption of methyl violet from aqueous solution by halloysite nanotubes. Desalination.
20. The hydrophobic effect on the adsorption of Rhodamines in aqueous suspensions of smectite. The rhodamine 3B/laponite B system
21. Adsorption studies of a microporous phathalocyanine network polymer10.1021/la060091z ↗
22. Removal and recovery of Malachite Green from wastewater using an agricultural waste material, de-oiled soya10.1016/j.seppur.2004.10.010 ↗
23. Use of anion clay hydrotalcite to remove coloured organics from aqueous solutions10.1016/S1383-5866(02)00158-2 ↗
24. Adsorption of organic molecules on silica surface10.1016/j.cis.2006.05.028 ↗
25. Removal of dyes from the effluent of textile and dyestuff manufacturing industry: a review of emerging techniques with reference to biological treatment10.1080/10643380590917932 ↗
26. Structure characterization and adsorption properties of pyrolyzed sewage sludge10.1021/es0497532 ↗
27. Adsorption of fast green and erythrosin-B to montmorillonite modified with crystal violet10.1007/s10973-005-7187-5 ↗
28. Adsorption of promethazine hydrochloride with KSF montmorillonite10.1007/s10450-006-0141-4 ↗
29. Halloysite nanotubes as biomimetic nanoreactors10.1002/smll.200400120 ↗
30. Adsorption of basic dyes onto MCM-4110.1016/j.chemosphere.2005.10.033 ↗
31. Dye adsorption on mesoporous activated carbon fiber obtained from pitch containing yttrium complex10.1016/S0008-6223(98)00294-2 ↗
32. Removal of Cd (II) and Pb (II) ions from aqueous solutions by adsorption onto sawdust of Pinus sylvestris10.1016/j.jhazmat.2003.07.009 ↗
33. Equilibrium, kinetics, mechanism, and process design for the sorption of methylene blue onto rice husk10.1016/j.jcis.2005.01.007 ↗
34. Preparation of highly microporous carbons from fir wood by KOH activation for adsorption of dyes and phenols from water10.1016/j.seppur.2005.03.013 ↗
35. Adsorption of methylene blue dye onto carbon nanotubes: a route to an electrochemically functional nanostructure and its layer-by-layer assembled nanocomposite10.1021/cm0504182 ↗
36. Mesoporous silicas functionalized with a high density of carboxylate groups as efficient absorbents for the removal of basic dyestuffs10.1039/b600611f ↗
37. Adsorption behavior of methylene blue on halloysite nanotubes10.1016/j.micromeso.2007.10.018 ↗