Copper Adsorption on Chitosan-Derived Schiff Bases

Zalloum, Hiba; Al-Qodah, Zakaria; Mubarak, Mohammad S.

doi:10.1080/10601320802515225

Cited by 62 publications

(35 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Indeed, the amine groups present in chitosan chains are the main effective bonding sites for metallic ions, resulting in complexes stabilized by coordination. 21 The characterization of all prepared solid materials was then performed by FTIR spectroscopy, TG, differential thermogravimetry (DTG), DSC, and SEM analyses.…”

Section: Loading Of Glut-chitosan Microspheres With Cu(ii) Ionsmentioning

confidence: 99%

[Dye molecules/copper(II)/macroporous glutaraldehyde‐chitosan] microspheres complex: Surface characterization, kinetic, and thermodynamic investigations

Jabli

Baouab

Sintès‐Zydowicz

et al. 2011

J of Applied Polymer Sci

View full text Add to dashboard Cite

Chitosan microspheres loaded Cu(II) were prepared using a precipitation method and heterogeneously crosslinked with glutaraldehyde. The abilities of the binary [Cu(II)/Glut-chitosan] system for binding two acid dyes, that is, Acid blue 25 (AB25) and Calmagite (Calma) were investigated. Sorption experiments were performed using a batch process at 25 C and indicate pH dependence. Evidence for the modification of the raw chitosan polymer was provided by Fourier transform infra red spectral study, thermogravimetry, differential thermogravimetry, differential scanning calorimetry, and scanning electron microscopy analysis. Data gleaned from the thermal analyses, showed that the modification of the polymer decreases the thermal stability of the prepared materials with respect to that of the native one. The effecting factors during dye adsorption have been also studied. Thermodynamic and kinetic experiments were undertaken to assess the capacity and the rate of dyes removal on the surface of [Cu(II)/Glut-chitosan]. Experimental data were mathematically described using various kinetic models. The pseudo second-order equation was shown to fit the adsorption kinetics. The interpretation of the equilibrium sorption data complies well with the Freundlich adsorption model. Thermodynamic results indicate that the adsorption follows an exothermic process.

show abstract

Section: Loading Of Glut-chitosan Microspheres With Cu(ii) Ionsmentioning

confidence: 99%

[Dye molecules/copper(II)/macroporous glutaraldehyde‐chitosan] microspheres complex: Surface characterization, kinetic, and thermodynamic investigations

Jabli

Baouab

Sintès‐Zydowicz

et al. 2011

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…These include evaporative recovery, ion exchange, reverse osmosis, electrochemical treatment, and adsorption. 11 However, the application of most of these processes is often limited due to technical or economic constraints. 10,18 Among these processes, adsorption is highly recommended because it is proven as a simple, economical, effective, and environmental friendly process.…”

Section: 517mentioning

confidence: 99%

Impact of surface modification of green algal biomass by phosphorylation on the removal of copper(II) ions from water

Al-Qodah¹,

Al-Shannag²,

Amro³

et al. 2017

Turk J Chem

Self Cite

View full text Add to dashboard Cite

A series of batch lab-scale experiments were performed to investigate the performance of dead phosphorylated algal biomass of Spirogyra species for the bioadsorption of Cu +2 ions from aqueous solutions. FT-IR and SEM analyses were performed to characterize the phosphorylated and raw algae. The SEM analysis indicated that the phosphorus content increases by about 5 times. The isotherm equilibrium data indicated that phosphorylation enhances the removal of Cu +2 from water by about 20%. The experimental isotherms fit well to Langmuir models with R 2 values close to 0.99.Adsorption kinetic study was conducted to investigate the effect of initial Cu +2 concentrations, pH, and adsorbent dose on the loading capacity of algal biomass. The optimum pH for the process was around 6 and the corresponding maximum loading capacity was 65 mg/g. The pseudo second-order kinetics successfully modeled the kinetic results with R 2 values closed to 0.99. The thermodynamic results indicated that the bioadsorption process is endothermic and spontaneous at initial Cu +2 concentrations lower than 100 mg/L. The results were promising and encourage the design of a continuous process using algal biomass to remediate water polluted with heavy metals.

show abstract

“…Langmuir and Freundlich isotherm models were applied to the MIP sorbent using the following Eqs. and , respectively:

C_{normale} / Q_{normale} = (1 / b Q_{normalo}) + (C_{normale} / Q_{normalo})

Log Q_{e} = Log K_{normalF} + (1 / n) Log C_{normale}

where Q e and Q o (mg/g) are the amounts of sorbate bounded to per unit mass of sorbent at equilibrium and saturation, b (L/mg) is the Langmuir constant, C e (mg/L) is the equilibrium concentration of sorbate, K F (L/mg) 1/ n is the Freundlich constant, and n is the Freundlich exponent.…”

Section: Methodsmentioning

confidence: 99%

Preconcentration of indapamide from human urine using molecularly imprinted solid‐phase extraction

Yılmaz

Basan

2015

J of Separation Science

View full text Add to dashboard Cite

A simple, sensitive, and selective molecularly imprinted solid-phase extraction and spectrophotometric method has been developed for the clean-up and preconcentration of indapamide from human urine. Molecularly imprinted polymers were prepared by a non-covalent imprinting approach using indapamide as a template molecule, 2-(trifluoromethyl) acrylic acid as a functional monomer, ethylene glycol dimethacrylate as a crosslinker, N,N-azobisisobutyronitrile as a thermal initiator and acetonitrile as a porogenic solvent. A non-imprinted polymer was also prepared in the same way, but in the absence of template. Molecularly imprinted polymer and non-imprinted polymer sorbents were dry-packed into solid-phase extraction cartridges. Eluates from cartridges were analyzed using a spectrophotometer for the determination of indapamide by referring to the calibration curve in the range 0.14-1.50 μg/mL. Preconcentration factor, limit of detection, and limit of quantification were 16.30, 0.025 μg/mL, and 0.075 μg/mL, respectively. A relatively high imprinting factor (9.3) was also achieved and recovery values for the indapamide spiked into human urine were in the range of 80.1-81.2%. In addition, relatively low within-day (0.17-0.42%) and between-day (1.1-1.4%) precision values were obtained as well. The proposed molecularly imprinted solid-phase extraction and spectrophotometric method was successfully applied to selective extraction, preconcentration, and determination of indapamide from human urine samples.

show abstract

Copper Adsorption on Chitosan-Derived Schiff Bases

Cited by 62 publications

References 32 publications

[Dye molecules/copper(II)/macroporous glutaraldehyde‐chitosan] microspheres complex: Surface characterization, kinetic, and thermodynamic investigations

[Dye molecules/copper(II)/macroporous glutaraldehyde‐chitosan] microspheres complex: Surface characterization, kinetic, and thermodynamic investigations

Impact of surface modification of green algal biomass by phosphorylation on the removal of copper(II) ions from water

Preconcentration of indapamide from human urine using molecularly imprinted solid‐phase extraction

Contact Info

Product

Resources

About