Adsorption of anionic dyes from textile wastewater utilizing raw corncob

Salih, Shameran Jamal; Kareem, Aram Salahuddin Abdul; Anwer, Sewgil Saaduldeen

doi:10.1016/j.heliyon.2022.e10092

Cited by 21 publications

(6 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 8 shows adsorption isotherm for ß-cyclodextrin polymer using methyl violet, the equilibrium adsorption capacity ( q e ), increased with increase in dye concentration. The shape of the isotherm indicated an L-behavior according to Giles et al [ 18 ] classification, which confirms a high affinity between the β-cyclodextrin polymer and the dye molecule [ 3 ].…”

Section: Resultsmentioning

confidence: 75%

“…And Figure 10 . Adsorption of methyl violet onto many other adsorbents cited in literature obeys Langumir isotherm [ 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ].…”

Section: Resultsmentioning

confidence: 99%

“…Dyes removal from water has been a challenge since long time; several methods have been reported and attempted for the removal of these pollutants like as membranes [ 1 ], photodegradation [ 2 ] and adsorption [ 3 ], among decolorization technique adsorption gives best results and it is an economically feasible process for purification. Investigation of adsorption equilibrium is very important because their data are the basis for the selection of suitable adsorbent, design of separation process.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Removal Efficiency of Insoluble β-Cyclodextrin Polymer from Water–Soluble Carcinogenic Direct Azo Dyes

et al. 2023

View full text Add to dashboard Cite

A batch system was applied to study the adsorption of three dyes (methyl violet, eriochrom black T and helianthin) from aqueous solution onto β-cyclodextrin polymer, synthesized by using citric acid as a cross linking agent. This polymer lets to adsorb only methyl violet for this effect, several operator variables was checked only with this kind of dye, the removal efficiently increases with increase in adsorbent amount; elevation of temperature lets also to improve the dye adsorption; ionic strength has not effect on dye adsorption process, for the pH we have remarked a slight decrease in removal efficiently with increasing of pH values. Equilibrium study was investigated by applying three models (Langumir, Frendlich and Temkin), results show that Langumir isotherm is the appropriate model. FTIR spectra show the complex inclusion formation which dominates the adsorption mechanism, confirmed by the absence of characteristic peaks of methyl violet in ß-cyclodextrin after adsorption.

show abstract

Section: Resultsmentioning

confidence: 75%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Removal Efficiency of Insoluble β-Cyclodextrin Polymer from Water–Soluble Carcinogenic Direct Azo Dyes

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Removal of anionic dyes is favored at pH 2−4, and therefore, in this acidic pH range, the adsorbent surface should be positively charged to adequately adsorb negatively charged anionic dyes. 19 We report the preparation and proof-of-concept validation of polyamine-functionalized lignin spherical particles with the capability to remove anionic contaminants from water waste streams. To increase the accessible surface area of the sorbent, lignin was processed to render spherical particles with a narrow particle size distribution in the vicinity of 220 nm.…”

Section: Introductionmentioning

confidence: 99%

Lignin-Based Nanospheres as Environmental Remediation Platforms for Anionic Dye Contaminants

Zhang,

Na,

Carrier

et al. 2024

ACS Omega

View full text Add to dashboard Cite

Modern manufacturing of textiles, pharmaceuticals, food, cosmetics, plastics, paper, etc. involves the utilization of anionic and cationic dyes that lead to significant water contamination. Recent research has explored the use of nanomaterials toward developing nanoadsorbents for water decontamination caused by industrial pollution. Here, we report on a novel platform for anionic dye remediation, consisting of a polyethylenimine-functionalized lignin nanosphere (PEI-LNS). The designed nanomaterial shows significant ability to adsorb an anionic dye selected as a proofof-concept�Sulforhodamine B, from aqueous solutions. The PEI lignin nanoadsorbents (PEI-LNS) showed a better ability to adsorb Sulforhodamine B sodium salt (SBSS) when compared to the raw lignin nanosphere adsorbent (LNS), especially in acidic conditions. The nanomaterial was characterized through transmission electron microscopy, scanning electron microscopy, Brunauer−Emmett−Teller surface area analysis, elemental analysis, zeta potential, thermogravimetric analysis, Fourier transform infrared spectroscopy, and nuclear magnetic resonance. The impacts of ionic strength, contact time, pH, and adsorbent concentration have been evaluated. The ability of PEI-LNS to adsorb SBSS was found to be consistent with Langmuir isotherms and pseudo-second-order kinetic models. The PEI-LNS could be recycled three times, reaching a good (85%) adsorbing capacity even in the third cycle. The study demonstrates that PEI-LNS has a strong affinity as a novel adsorbent for anionic dyes and could be employed in environmental cleanups pertaining to such contaminations.

show abstract

“…Moreover, several authors have reported that CC is an effective adsorbent material not only for the treatment of water contaminated with dyes but also for alcohols. [7][8][9] Additionally, it is important to highlight that there are models in the literature to represent the adsorption phenomenon of the CC-dye system. However, these models are mostly empirical and therefore are linked to fixed operating conditions that cannot be extrapolated to other systems or modes of operation.…”

Section: Introductionmentioning

confidence: 99%

Phenomenological‐based model of direct blue 2 adsorption on corncob in a fixed‐bed

Presiga‐Posada,

Alvarez,

Hormaza

2023

Can J Chem Eng

View full text Add to dashboard Cite

This work presents a phenomenologically based semi‐physical model (PBSM) for the liquid–solid adsorption process, which has been experimentally validated. Two modes of operation of adsorption of direct blue 2 dye (DB2) on corn cobs in a fixed bed are discussed by applying the PBSM. The first mode of operation is the typical continuous liquid flow, whereas the second is a semicontinuous mode with the recirculation of liquid leaving the column. These modes of operation were used to illustrate different ways in which the system reaches equilibrium conditions. The equilibrium distribution curve (EDC) for low DB2 concentration was reached with the best fit using the Langmuir–Freundlich model (). The local mass transfer coefficient for the solid phase was evaluated by the PBSM deduction, and subsequently, the diffusivity of the surface solid was experimentally evaluated through comparison in terms of the PBSM. Regardless of the mode of operation, surface diffusion is associated with only the nature of the adsorbent material rather than the concentration of the liquid phase. In addition, the PBSM exhibited liquid and solid concentration changes at different points in the column. Moreover, different operating curves of the process were constructed and validated, exhibiting similar results when comparing the predictions of the model and the experimental data. These findings support the strength of the constructed model, enabling its extension to other adsorbent–dye systems.

show abstract

Adsorption of anionic dyes from textile wastewater utilizing raw corncob

Cited by 21 publications

References 59 publications

Removal Efficiency of Insoluble β-Cyclodextrin Polymer from Water–Soluble Carcinogenic Direct Azo Dyes

Removal Efficiency of Insoluble β-Cyclodextrin Polymer from Water–Soluble Carcinogenic Direct Azo Dyes

Lignin-Based Nanospheres as Environmental Remediation Platforms for Anionic Dye Contaminants

Phenomenological‐based model of direct blue 2 adsorption on corncob in a fixed‐bed

Contact Info

Product

Resources

About