Sorptive removal of malachite green from aqueous solution by magnetite/coir pith supported sodium alginate beads: Kinetics, isotherms, thermodynamics and parametric optimization

Sarkar, Sanjay; Tiwari, Nitika; Basu, Aradhana; Behera, Meerambika; Das, Bhaskar; Chakrabortty, Sankha; Sanjay, Kali; Suar, Mrutyunjay; Adhya, T. K.; Banerjee, Shirsendu; Tripathy, Suraj K.

doi:10.1016/j.eti.2021.101818

Cited by 31 publications

(9 citation statements)

References 43 publications

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“…This rise in temperature might lead to a reduction in the viscosity of an MG solution, which results in an increase in MG diffusion rate through the pores of the SBPE and SBPEAC composites [ 62 ]. These results are consistent with previous studies, which have reported the maximum removal of MG at a higher temperature using reduced graphene oxide [ 62 ] and magnetite/coir pith-supported sodium alginate beads [ 56 ].…”

Section: Resultssupporting

confidence: 93%

“…This increase in the adsorption of the cationic MG dye onto both SBPE and SBPEAC surfaces through electrostatic interaction led to an increase in the adsorption capacities of both SBPE and SBPEAC composites toward the MG dye. Similar results were reported for the adsorption of MG on the copper ferrite/drumstick pod biomass composite [ 55 ] and magnetite/coir pith-supported sodium alginate beads by Sarkar et al [ 56 ]. Thus, pH 7.6 was selected for further studies.…”

Section: Resultssupporting

confidence: 87%

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Co-Carbonized Waste Polythene/Sugarcane Bagasse Nanocomposite for Aqueous Environmental Remediation Applications

et al. 2023

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The conversion of worthless municipal solid wastes to valuables is a major step towards environmental conservation and sustainability. This work successfully proposed a technique to utilize the two most commonly available municipal solid wastes viz polythene (PE) and sugarcane bagasse (SB) for water decolorization application. An SBPE composite material was developed and co-pyrolyzed under an inert atmosphere to develop the activated SBPEAC composite. Both SBPE and SBPEAC composites were characterized to analyze their morphological characteristics, specific surface area, chemical functional groups, and elemental composition. The adsorption efficacies of the composites were comparatively tested in the removal of malachite green (MG) from water. The SBPEAC composite had a specific surface area of 284.5 m2/g and a pore size of ~1.33 nm. Batch-scale experiments revealed that the SBPEAC composite performed better toward MG adsorption compared to the SBPE composite. The maximum MG uptakes at 318 K on SBPEAC and SBPE were 926.6 and 375.6 mg/g, respectively. The adsorption of MG on both composites was endothermic. The isotherm and kinetic modeling data for MG adsorption on SBPEAC was fitted to pseudo-second-order kinetic and Langmuir isotherm models, while Elovich kinetic and D-R isotherm models were better fitted for MG adsorption on SBPE. Mechanistically, the MG adsorption on both SBPE and SBPEAC composites involved electrostatic interaction, H-bonding, and π-π/n-π interactions.

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Section: Resultssupporting

confidence: 93%

Section: Resultssupporting

confidence: 87%

Co-Carbonized Waste Polythene/Sugarcane Bagasse Nanocomposite for Aqueous Environmental Remediation Applications

et al. 2023

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“…The adsorption capacity (qe, mg/g) at equilibrium and the removal percentage (R%) of the metal ions were evaluated using Eqs. ( 1) and ( 2) [28,29].…”

Section: Adsorption Testsmentioning

confidence: 99%

Incorporation of zero-valent silver and polyvinyl acetate on the surface matrix of carbon nanotubes for the adsorption of mercury and chromium from industrial wastewater

Egbosiuba¹

2022

Nig. J. Tech.

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Herein, zero-valent silver (Ag0) and polyvinyl acetate (PVAc) was ultrasonically incorporated into the surface matrix of MWCNTs to produce a multifunctional MWCNTs-Ag0/PVAc nanocomposite. The MWCNTs, MWCNTs-Ag0 and MWCNTs-Ag0/PVAc were characterized for the thermal stability, crystallographic structure and morphology using thermogravimetric analysis (TGA), X-ray diffraction (XRD) and high resolution scanning electron microscopy (HRSEM). Industrial wastewater containing Hg(II) and Cr(VI) ions were treated using the fabricated MWCNTs-Ag0/PVAc at different adsorption parameters such as pH, adsorbent mass, adsorption time and temperature. The characterization result obtained indicated successful incorporation of the Ag0 and PVAc to the surface matrix of MWCNTs-Ag0/PVAc. The materials were thermally stable and the crystalline peaks/patterns of the incorporated materials were evident on the MWCNTs-Ag0/PVAc. The adsorption study revealed maximum adsorption capacity of 249 mg/g and 237 mg/g for the Hg(II) and Cr(VI) by MWCNTs-Ag0/PVAc at the pH (6 for Hg(II) and 3 for Cr(VI)), adsorbent mass (40 mg), adsorption time (60 min) and temperature (30 °C). The experimental data effectively fitted the Langmuir isotherm and pseudo-second order kinetic, respectively. Finally, MWCNTs-Ag0/PVAc showed remarkable performance as a suitable adsorbent for heavy metals removal from industrial wastewater.

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“…Malachite green (MG), a triphenylmethane cationic dye, is frequently used in the textile industry (Jin et al, 2022) . However, even at low concentrations, MG has been discovered to have numerous toxicological side effects on human bodies, such as mutagenic, teratogenic, and cancerous consequences (Buvaneswari and Singanan, 2022;Sarkar et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Facile Fabrication of Layered Double Hydroxide-Lignin for Efficient Adsorption of Malachite Green

Palapa

Ahmad

Wijaya

et al. 2023

Sci. Technol. Indones

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Preparation of layered double hydroxide-lignin (lignin-Zn/Al) carried out by coprecipitation method. The FTIR spectra of lignin-Zn/Al displayed at 3448, 2939, 1620, 1381, 1118, 1041, and 601 cm−1. The characteristic peaks are located at 10.1°, 19.1°, 20.1°, 29.4°, 33.9°, and 60.4°. The lignin-Zn/Al nitrogen adsorption-desorption isotherm showed a Type-IV curve, indicating that it had a mesoporous structure. The H3 kind of hysteresis loop also provides evidence for the presence of mesopores within the lignin-Zn/Al complex. Lignin-Zn/Al, lignin, and Zn/Al had pHpzc values of 6.09, 3.01, and 6.09, respectively. Lignin-Zn/Al, lignin, and Zn/Al are positively charged when the pH of the solution is less than pHpzc, and they are negatively charged when the pH of the solution is more than pHpzc. The Langmuir and pseudo-second-order model best represented the MG adsorption onto all adsorbents. The lignin-Zn/Al, lignin, and Zn/Al were shown to have maximum Langmuir adsorption capacities of 83.034, 78.740, and 36.364 mg/g, respectively. Zn/Al adsorption capacity increased 2.28 times after being composited with lignin.

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Sorptive removal of malachite green from aqueous solution by magnetite/coir pith supported sodium alginate beads: Kinetics, isotherms, thermodynamics and parametric optimization

Cited by 31 publications

References 43 publications

Co-Carbonized Waste Polythene/Sugarcane Bagasse Nanocomposite for Aqueous Environmental Remediation Applications

Co-Carbonized Waste Polythene/Sugarcane Bagasse Nanocomposite for Aqueous Environmental Remediation Applications

Incorporation of zero-valent silver and polyvinyl acetate on the surface matrix of carbon nanotubes for the adsorption of mercury and chromium from industrial wastewater

Facile Fabrication of Layered Double Hydroxide-Lignin for Efficient Adsorption of Malachite Green

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