New magnetic Schiff's base-chitosan-glyoxal/fly ash/Fe3O4 biocomposite for the removal of anionic azo dye: An optimized process

Malek, Nurul Najwa Abdul; Jawad, Ali H.; Abdulhameed, Ahmed Saud; Ismail, Khudzir; Hameed, B.H.

doi:10.1016/j.ijbiomac.2020.01.020

Cited by 158 publications

(29 citation statements)

References 51 publications

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“…The parameters of equilibrium models are recorded in Table 3. According to the R 2 values (Table 3) obtained from the isotherm models, Freundlich isotherm shows the highest correlation (R 2 0.97) which indicates the MB dye adsorption occurred on the heterogeneous surface [50]. The value of 1/n is less than 1, indicating the strong adsorption bond between MB dye molecules onto SATCS [51].…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Acid-factionalized biomass material for methylene blue dye removal: a comprehensive adsorption and mechanism study

Jawad

Abdulhameed

Mastuli

2020

Journal of Taibah University for Science

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192

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Coconut (Cocos nucifera) shell was chemically treated with sulfuric acid (H2SO4) to produce acid-factionalized biosorbent for methylene blue (MB) dye removal from aqueous environment. Various analytical techniques were utilized to investigate the surface area, surface morphology, crystallinity, elemental composition, and functional group of the sulfuric acid-treated coconut shell (SATCS). The adsorption parameters such as adsorbent dosage (0.02-0.20 g), solution pH (3-10), contact time (0-360 min), and initial MB dye concentration (25-200 mg/L) were studied. The adsorption results were illustrated by pseudo-second order kinetic and Freundlich isotherm models. It was found that SATCS has a maximum adsorption capacity (q max) of 50.6 mg/g at 303 K. The adsorption mechanism of MB dye on the SATCS surface can be assigned to the various types of interactions such as electrostatic attractions, H-bonding interaction, and π-π interaction. This work shows SATCS as promising acid-factionalized biosorbent for removal MB dye.

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Section: Adsorption Isothermsmentioning

confidence: 99%

Acid-factionalized biomass material for methylene blue dye removal: a comprehensive adsorption and mechanism study

Jawad

Abdulhameed

Mastuli

2020

Journal of Taibah University for Science

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192

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“…3 (a) represents the normal probability of residuals for the removal efficiency of CV by MRB. It shows the symmetrical arrangement of experimental data within the level of confidence for the quadratic model [45]. Fig.…”

Section: Analysis Of Variance (Anova)mentioning

confidence: 86%

“…3 (c). This relation can be deduced from low high F-value and P-value [45]. Increasing the adsorbent dosage increases the CV removal, this is a result of the increasing number of adsorbent active removing more dye from the aqueous solution [46].…”

Section: Analysis Of Variance (Anova)mentioning

confidence: 90%

Adsorption of crystal violet dye by agricultural rice bran waste: Isotherms, kinetics, modeling and influencing factors

Rezazadeh

Baghdadi

Mehrdadi

et al. 2020

Environmental Engineering Research

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In this study, the potential of modified rice bran (MRB) was investigated for the elimination of crystal violet (CV) from plotted effluent. In this regard, rice bran (RB) was modified by chlorosulfonic acid. The results of FTIR, EDX, and SEM analysis showed structural change, an increase in the amount of sulfur, and the formation of a new band (998 and 1,225 cm-1) in MRB, respectively. The impact of different variables such as contact time, MRB dosage, pH, CV concentration, and ions content on removal efficiency was studied by using batch experiments. In addition, response surface methodology was employed to optimize the experiments. The maximum removal efficiency of 97.4% was obtained at the adsorbent dosage of 2 g L-1 , initial CV concentration of 100 mg L-1 , and contact time of 42.75 min. The highest adsorption capacity of 603 mg g-1 was acquired by the Langmuir model. The best description of kinetic data was achieved by the Elovich model. The thermodynamic study of the adsorption indicated an endothermic and spontaneous reaction. MRB could be regenerated by HCl 0.5 mol L-1 and removal efficiency was declined 10 percent after 5 adsorption/desorption cycles. It was concluded that MRB is an operational adsorbent to remove CV from effluents.

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“…In this regard, different types of materials have been explored as potential adsorbents [16][17][18], but the efficient adsorbent in focus is still centered on activated carbon because of its capability to adsorb different types of adsorbates [19]. Because of the expensive production and regeneration processes of activated carbon, new types of adsorbents, including biopolymer-and polymer-based composites [20][21][22][23][24][25][26], and chemically modified agricultural waste materials [16,[27][28][29] have been explored. The other method of interest is the use of advanced oxidation processes, especially using titanium oxide nanoparticles (TiO 2 NPs) as a photocatalyst to generate solvated oxygen-based radicals capable to oxidize the synthetic dyes in water solution [30,31].…”

Section: Introductionmentioning

confidence: 99%

Insight into the adsorption kinetics, mechanism, and thermodynamics of methylene blue from aqueous solution onto pectin-alginate-titania composite microparticles

et al. 2021

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In the present study, pectin-alginate-titania (PAT) composites were synthesized and the adsorptive removal behavior of methylene blue (MB) from aqueous solution, as a model of synthetic organic effluents, onto the prepared PAT composites were investigated by monitoring the effect of contact time, initial MB concentration, and temperature. The adsorption isotherm data were fitted well with the Freundlich isotherm model, suggesting the surface heterogeneity of the PAT composites and that the MB adsorption occurred on the active sites on multilayer surface of the composites. The adsorption kinetics of MB was demonstrated to be pseudo-second order, governed by two intraparticle diffusion rates, and the adsorption process was exothermic, spontaneous, and more disorder. The Langmuir isotherm model suggested that the maximum adsorption capacity of MB on the PAT composites was in the range of 435–637 mg g–1. In general, it increased with the TiO2 NPs content in the PAT composites, due most likely to the increase in surface area exposing more functional groups of the pectin and alginate to interact with the synthetic dye. The adsorptive removal of MB by the PAT composites was found to be more efficient compared with many other reported adsorbents, such as graphene oxide hybrids, pectin microspheres, magnetite-silica-pectin composites, clay-based materials, chemically treated minerals, and agricultural waste. The present study therefore demonstrated for the first time that PAT composites are not only promising to be utilized as an adsorbent in wastewater treatment, but also provide an insight into the adsorption mechanism of the synthetic dyes onto the biopolymers-titania composites. Graphic abstract Insight into the adsorption kinetics, mechanism, and thermodynamics of methylene blue from aqueous solution onto pectin-alginate-titania composite microparticles.

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New magnetic Schiff's base-chitosan-glyoxal/fly ash/Fe3O4 biocomposite for the removal of anionic azo dye: An optimized process

Cited by 158 publications

References 51 publications

Acid-factionalized biomass material for methylene blue dye removal: a comprehensive adsorption and mechanism study

Acid-factionalized biomass material for methylene blue dye removal: a comprehensive adsorption and mechanism study

Adsorption of crystal violet dye by agricultural rice bran waste: Isotherms, kinetics, modeling and influencing factors

Insight into the adsorption kinetics, mechanism, and thermodynamics of methylene blue from aqueous solution onto pectin-alginate-titania composite microparticles

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