Bifunctionalized chitosan: A versatile adsorbent for removal of Cu(II) and Cr(VI) from aqueous solution

Moreira, Ana Luísa da Silva Lage; Pereira, Analice de Souza; Speziali, Marcelo Gomes; Novack, Kátia Monteiro; Gurgel, Leandro Vinícius Alves; Gil, Laurent Frédéric

doi:10.1016/j.carbpol.2018.08.055

Cited by 33 publications

(11 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All the experiments were carried out at room temperature. was as a result of asymmetric and symmetric stretching of the ester C-O bond and this was similar to that reported by [10] on zinc ions removal by EDTAD modified sugarcane bagasse and wood dust. The presence of the characteristic peak at 1630 cm -1 is a result of asymmetric stretching of the carboxylate ion.…”

Section: Optimization Of Contact Time Sorbent Mass Ph and Initial Concentrationsupporting

confidence: 89%

See 1 more Smart Citation

Removal of Methylene Blue and Neutral Red Dyes from Spiked Waste-Water Using Edtad Modified Cellulose Obtained from Pennisetum purpureum

Oyaro

Ngumba

Salim

2021

CSIJ

View full text Add to dashboard Cite

The presence of dyes in aquatic effluents is highly visible, undesirable, carcinogenic to human beings and toxic to living organisms. EDTAD modified cellulose extracted from Pennisetum purpureum was studied as an adsorbent for the removal of cationic dyes from spiked waste-water. Shimadzu Fourier Transform Infrared spectrophotometer, was used to analyze functional groups of cellulose and EDTAD modified cellulose. The characteristic peaks at 1260 cm-1, 1634 cm-1, 1058 cm-1, and 1740 cm-1 indicated formation of ester bond linkages associated with the introduction of EDTAD thus successful modification of cellulose. Shimadzu UV-VIS 1800 series determined the degree of dye concentration. Optimum adsorption was determined by varying the dosage, pH, contact time, and the initial concentration of the dyes. An increase in adsorbent mass increased the percentage removal for both dyes up to a maximum of 98%. Low pH levels prompted low percentage removal as compared to higher pH values for both dyes. Kinetic studies were carried out using the Freundlich and Langmuir isotherms, to investigate the rate of adsorption. Methylene blue and neutral red dyes seemed to conform to langmuir with high R2 values of 0.999 and 0.997 respectively while freundlich isotherm had values of 0.9969 and 0.9835, indicating that the adsorption surface of the EDTAD modified cellulose was monolayer. Methylene Blue adsorption capacity was 200mg/g while for Neutral Red dye was 149.25mg/g. The kinetics were well depicted by pseudo second order model whose correlation coefficients were closer to unity than those of the first order model. The efficiency of EDTAD modified cellulose from Pennisetum purpureum as an adsorbent in the removal of dyes renders it a remedy to the various problems caused by dyes to aquatic life and human beings.

show abstract

Section: Optimization Of Contact Time Sorbent Mass Ph and Initial Concentrationsupporting

confidence: 89%

“…All of these were of analytical grade and obtained from Chem-lab Limited-Kenya with a 99.8% purity. EDTAD was prepared by the method outlined by [10].…”

Section: Methodsmentioning

confidence: 99%

Removal of Methylene Blue and Neutral Red Dyes from Spiked Waste-Water Using Edtad Modified Cellulose Obtained from Pennisetum purpureum

Oyaro

Ngumba

Salim

2021

CSIJ

View full text Add to dashboard Cite

show abstract

“…Therefore, the use of a desorbent such as carbonate solution should enable the ion exchange of HCrO4by CO3 2-. On the other hand, the partial desorption of oxyanions of Cr(VI) from different adsorbents has been reported to be due to the phenomenon of aging (Kuo and Bembenek, 2008;Moreira et al, 2018).…”

Section: Desorption and Reuse Of Spent Adsorbentmentioning

confidence: 99%

Application of pyridine-modified chitosan derivative for simultaneous adsorption of Cu(II) and oxyanions of Cr(VI) from aqueous solution

Gonçalves

Gurgel

Soares

et al. 2021

Journal of Environmental Management

Self Cite

View full text Add to dashboard Cite

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

show abstract

“…When Cr(VI) comes in contact with an adsorbent that acts as a reducing agent, it is readily being reduced to Cr(III) in an acidic medium due to its high redox potential value. Concerning the reduction-adsorption approach, adsorbents such as activated carbon 18 – 19 , rice bran 20 , graphene 21 – 22 , carbon nanotubes 23 – 25 , shale 26 , biomass 27 – 29 , nano-zerovalent metallic particles 30 – 32 , dolerite 33 , seeds 34 , chitosan 35 – 37 amongst others have been modified due to their inherent limitation such as poor functionality that has hindered their application in environmental remediation practice. Hence, it is imperative to design a novel adsorbent that is not just effective but also green and scalable for the removal of Cr(VI) in a large volume of wastewater.…”

Section: Introductionmentioning

confidence: 99%

Functionalized MWCNTs-quartzite nanocomposite coated with Dacryodes edulis stem bark extract for the attenuation of hexavalent chromium

Amaku

Ogundare

Akpomie

et al. 2021

Sci Rep

View full text Add to dashboard Cite

Multiwalled carbon nanotubes/quartzite nanocomposite modified with the extract of Dacryodes edulis leaves was synthesized and designated as Q, which was applied for the removal of Cr(VI) from water. The adsorbents (PQ and Q) were characterized using the SEM, EDX, FTIR, TGA, XRD, and BET analyses. The XRD revealed the crystalline composition of the nanocomposite while the TGA indicated the incorporated extract as the primary component that degraded with an increase in temperature. The implication of the modifier was noticed to enhance the adsorption capacity of Q for Cr(VI) by the introduction of chemical functional groups. Optimum Cr(VI) removal was noticed at a pH of 2.0, adsorbent dose (50 mg), initial concentration (100 mg dm−3), and contact time (180 min). The kinetic adsorption data for both adsorbents was noticed to fit well to the pseudo-second-order model. The adsorption equilibrium data were best described by the Langmuir model. The uptake of Cr(VI) onto PQ and Q was feasible, endothermic (ΔH: PQ = 1.194 kJ mol−1 and Q = 34.64 kJ mol−1) and entropy-driven (ΔS : PQ = 64.89 J K−1 mol−1 and q = 189.7 J K−1 mol−1). Hence, the nanocomposite demonstrated potential for robust capacity to trap Cr(VI) from aqueous solution.

show abstract

Bifunctionalized chitosan: A versatile adsorbent for removal of Cu(II) and Cr(VI) from aqueous solution

Cited by 33 publications

References 36 publications

Removal of Methylene Blue and Neutral Red Dyes from Spiked Waste-Water Using Edtad Modified Cellulose Obtained from Pennisetum purpureum

Removal of Methylene Blue and Neutral Red Dyes from Spiked Waste-Water Using Edtad Modified Cellulose Obtained from Pennisetum purpureum

Application of pyridine-modified chitosan derivative for simultaneous adsorption of Cu(II) and oxyanions of Cr(VI) from aqueous solution

Functionalized MWCNTs-quartzite nanocomposite coated with Dacryodes edulis stem bark extract for the attenuation of hexavalent chromium

Contact Info

Product

Resources

About