Studies on Effect of Adsorption Parameters for the Methylene Blue Dye Removal by Using Lowcost Adsorbent

Kandisa, Ravi Vital; Kv, Narayana Saibaba; Shaik, Khasim Beebi; R, Gopinadh

doi:10.31788/rjc.2021.1436307

Cited by 3 publications

(5 citation statements)

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“…The importance of studying this factor comes from its influence on the adsorption process where a sufficient contact time allows more chances for the purification of the contaminated water permitting more adsorption for the dyes. The steady-state adsorption time in the present case was reached after a time equal to or less than the equilibrium time that has been reached by other various low-cost adsorbents for the uptake of MB dye 5,8,11 , or CR dye 15,39 .…”

Section: The Influence Of Contact Timementioning

confidence: 75%

“…These methods include ion exchange, precipitation, electrocoagulation, adsorption, oxidation, evaporation, reverse osmosis, electrochemistry, membrane filtration, Fenton oxidation, bio-degradation, ozonation and phytoremediation 6 , 7 . Among these methods, adsorption is at the top of these techniques because it is found to be a cheap, eco-friendly, and active technique for the elimination of dyes from industrial wastewater 8 . It is a surface concept that concerns the charges/surface forces among the dye, the medium (water), and the adsorbent (solid material that absorbs the dye).…”

Section: Introductionmentioning

confidence: 99%

“…Long exposure to it can cause serious health problems such as Jaundice, abdominal disorders, tissue necrosis, and stomach with symptoms of nausea, eye burns, etc. 8 . About Methylene blues’ safe exposure level, its ORAL (LDLo) for humans is 20 mg/kg bw/day.…”

Section: Introductionmentioning

confidence: 99%

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The effective treatment of dye-containing simulated wastewater by using the cement kiln dust as an industrial waste adsorbent

Syala,

Sadik,

El-Demerdash

et al. 2024

Sci Rep

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This study compares the adsorption behavior of both Methylene Blue (MB) and Congo Red (CR) dyes on the surfaces of cement kiln dust (CKD) powder from the experimentally simulated wastewater solution. The cement kiln dust powder was characterized using X-ray Fluorescence (XRF), X-ray diffraction (XRD), N2 adsorption–desorption Brunauer–Emmett–Teller (BET), Fourier Transform Infrared Spectroscopy (FTIR), and Scanning Electron Microscopy (SEM) tests. The adsorption for such dyes was studied under varying mixing contact times, temperatures, and pH as well as various initial concentrations of both dyes and adsorbent using the batch mode experiments. Pseudo-first-order, pseudo-second-order, and intraparticle diffusion models were applied, and the results revealed that the pseudo-second-order fitted well to the kinetic data. Thermodynamic parameters stated that the adsorption process was endothermic. Studying Linear and nonlinear forms of Langmuir and Freundlich's adsorption isotherms revealed that the adsorption process was followed by both homogeneous mono-layer and heterogeneous multilayer coverage on the active sites of cement kiln dust particles. The data showed that the adsorption capacities of the methylene blue and Congo red dyes were 58.43 and 123.42 mg/g, respectively and cement kiln dust is an adsorbent with little cost for the treatment of wastewater.

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Section: The Influence Of Contact Timementioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

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The effective treatment of dye-containing simulated wastewater by using the cement kiln dust as an industrial waste adsorbent

Syala,

Sadik,

El-Demerdash

et al. 2024

Sci Rep

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“…Experimental data also clearly indicate a change in the mechanism of the process after 180 min—from diffusion through the film of the surface boundary layer and direct adsorption on the exposed external surface, to the combined mechanism of internal diffusion immediately following this initial stage 75 . Obtained with linear regression methods model parameters are presented in Table S2 (see Supplementary Information) 77 , 85 .…”

Section: Phosphate(v) Ions Adsorptionmentioning

confidence: 99%

Cerium(IV) chitosan-based hydrogel composite for efficient adsorptive removal of phosphates(V) from aqueous solutions

Wujcicki,

Mańdok,

Budzińska-Lipka

et al. 2023

Sci Rep

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The excess presence of phosphate(V) ions in the biosphere is one of the most serious problems that negatively affect aqueous biocenosis. Thus, phosphates(V) separation is considered to be important for sustainable development. In the presented study, an original cerium(IV)-modified chitosan-based hydrogel (Ce-CTS) was developed using the chemical co-precipitation method and then used as an adsorbent for efficient removal of phosphate(V) ions from their aqueous solutions. From the scientific point of view, it represents a completely new physicochemical system. It was found that the adsorptive removal of phosphate(V) anions by the Ce-CTS adsorbent exceeded 98% efficiency which is ca. 4-times higher compared with the chitosan-based hydrogel without any modification (non-cross-linked CTS). The best result of the adsorption capacity of phosphates(V) on the Ce-CTS adsorbent, equal to 71.6 mg/g, was a result of adsorption from a solution with an initial phosphate(V) concentration 9.76 mg/dm3 and pH 7, an adsorbent dose of 1 g/dm3, temperature 20 °C. The equilibrium interphase distribution data for the Ce-CTS adsorbent and aqueous solution of phosphates(V) agreed with the theoretical Redlich-Peterson and Hill adsorption isotherm models. From the kinetic point of view, the pseudo-second-order model explained the phosphates(V) adsorption rate for Ce-CTS adsorbent the best. The specific effect of porous structure of adsorbent influencing the diffusional mass transfer resistances was identified using Weber-Morris kinetic model. The thermodynamic study showed that the process was exothermic and the adsorption ran spontaneously. Modification of CTS with cerium(IV) resulted in the significant enhancement of the chitosan properties towards both physical adsorption (an increase of the point of zero charge of adsorbent), and chemical adsorption (through the presence of Ce(IV) that demonstrates a chemical affinity for phosphate(V) anions). The elaborated and experimentally verified highly effective adsorbent can be successfully applied to uptake phosphates(V) from aqueous systems. The Ce-CTS adsorbent is stable in the conditions of the adsorption process, no changes in the adsorbent structure or leaching of the inorganic filling were observed.

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“…This trend is attributed to the saturation of the existing available active sites on adsorbent with proceeding adsorption(Chen et al, 2018) and to the difficulty of the remaining vacant surface sites to be occupied by MB dye molecules due to repulsive forces between the solute molecules on the solid and bulk phases(Basu et al, 2018). Based on Figure3the adsorption of MB by FL adsorbent reached equilibrium after 60 min Kandisa et al (2018),Alghamdi et al (2021). andAmuda et al (2014) studied the removal of MB dye from Vigna Trilobata pods, Citrullus colocynthis seeds, and activated carbon from Lantana camara stem, respectively, also concluded that ≥60 min is sufficient to achieve equilibrium.…”

mentioning

confidence: 96%

Biosorption of Methylene Blue dye by Ligustrum lucidum fruits biomass: Equilibrium, isotherm, kinetic and thermodynamic studies

2023

Global NEST: The International Journal

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<p>.In this work, biomass from Ligustrum lucidum fruits (LF) was used for the first time as a novel adsorbent to remove the Methylene Blue dye (MB) from aqueous solutions. The adsorption equilibrium was attained after 60 min, and the adsorption followed the pseudo-second-order kinetic model. The rise of temperature from 295 K to 313 K resulted in a decline in the adsorption capacity, suggesting an exothermic process. The Langmuir isotherm model was found to fit better the experimental adsorption data than the Freundlich isotherm model. The maximum monolayer adsorption capacity obtained from the Langmuir isotherm model at pH 5.6 was evaluated to be 95.4 mg/g and 91.8 mg/g at 295 K and 313 K, respectively. The thermodynamic studies indicated that the adsorption was a spontaneous and exothermic process with increasing randomness at the solid/solution interface. Based on FTIR and ionic strength studies, the adsorption of MB by LF mainly occurs via electrostatic interactions and the formation of outer-sphere complexes.</p>

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Studies on Effect of Adsorption Parameters for the Methylene Blue Dye Removal by Using Lowcost Adsorbent

Cited by 3 publications

References 0 publications

The effective treatment of dye-containing simulated wastewater by using the cement kiln dust as an industrial waste adsorbent

The effective treatment of dye-containing simulated wastewater by using the cement kiln dust as an industrial waste adsorbent

Cerium(IV) chitosan-based hydrogel composite for efficient adsorptive removal of phosphates(V) from aqueous solutions

Biosorption of Methylene Blue dye by Ligustrum lucidum fruits biomass: Equilibrium, isotherm, kinetic and thermodynamic studies

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