Recent advances in chitosan and its derivatives as adsorbents for removal of pollutants from water and wastewater

Liu, Changkun; Bai, Renbi

doi:10.1016/j.coche.2014.01.004

Cited by 66 publications

(27 citation statements)

References 44 publications

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“…Chitosan (poly-(1-4)-2-amino-2-deoxy-b-dglucose) is the second most abundant natural biopolymer and is produced from N-deacetylation of chitin [1]. The intrinsic characteristics of chitosan, such as its availability, non-toxicity, biocompatibility, and reactivity, make it a widely used material in the chemical, environmental, pharmaceutical, food, and medical fields [2,3].…”

Section: Introductionmentioning

confidence: 99%

Response surface methodology approach for optimization of methyl orange adsorptive removal by magnetic chitosan nanocomposite

Ayati

Moghaddam²,

Tanhaei³

et al. 2017

Maced. J. Chem. Chem. Eng.

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In this work, the adsorption process of methyl orange (MO) removal by a magnetic chitosan with an Al 2 O 3 /Fe 3 O 4 core was optimized using the experimental design method in order to maximize the removal efficiency. Response surface methodology (RSM) based on central composite design (CCD) was performed to find the relationship between the effective adsorption parameters on the MO removal efficiency as the response. The statistical parameters of the derived model were acquired: R 2 = 0.9799 and F value = 47.07. Finally, non-linear optimization was carried out and values of 6.5, 0.70 g l -1 , 30 ppm, and 60 min were obtained as the optimum values for pH, adsorbent dosage, initial concentration, and contact time, respectively, while the predicted MO removal efficiency was found to be 96.8 ± 2.2% (with a 95% confidence level). This was in agreement with the experimental response of 96.5 ± 1.4%.Keywords: adsorption; optimization; chitosan; magnetic; response surface methodology ПРИМЕНА НА МЕТОДОЛОГИЈАТА НА ПОВРШИНА НА ОДГОВОР ПРИ ОПТИМИЗАЦИЈА НА АТСОРПТИВНО ОТСТРАНУВАЊЕ НА МЕТИЛ ОРАНЖ СО НАНОКОМПОЗИТ ОД МАГНЕТИЗИРАН ХИТОСАНВо ова истражување, со примена на методот на експериментален дизајн, беше оптимизиран атсорпцискиот процес на отстранување на метил оранж (МО) со магнетизиран хитозан со јадро од Al 2 O 3 /Fe 3 O 4 за да се максимизира ефикасноста на отстранувањето. Беше применета методологијата на површината на одговор (RSM) заснована на централен копмпозитен дизајн (CCD) за да се најде зависноста меѓу ефективните атсорпциски параметри за ефикасноста на отстранувањето на МО како одговор. Беа добиени статистички параметри изведени од моделот R 2 = 0,9799 и вредноста F = 47,07. На крајот, беше извршена нелинеарна оптимизадција и беа добиени следниве соодветни оптимални вредности за рН, доза на атсорбенсот, почетна концентрација и време на контакт од 6,5, 0,70 g l -1 , 30 ppm и 60 min, соодветно, додека предвидената ефикасност на отстранување изнесуваше 96,8 ± 2,2% (со 95% ниво на веродостојност) што беше во согласност со експериментално добиената вредност од 96,5 ± 1,4%.Клучни зборови: атсорпција; оптимизација; хитозан; магнетски својства; методологија на површина на одговор

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Section: Introductionmentioning

confidence: 99%

Response surface methodology approach for optimization of methyl orange adsorptive removal by magnetic chitosan nanocomposite

Ayati

Moghaddam²,

Tanhaei³

et al. 2017

Maced. J. Chem. Chem. Eng.

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“…6): (12) It is noticed that the unit of K L used in calculating thermodynamic parameters by Eqs. (11) and (12) should be L mol -1 . Table 6 lists these parameters under the temperature ranges studied.…”

Section: Determination Of Thermodynamic Parametersmentioning

confidence: 99%

“…The Gibbs free energy change (∆G) can be calculated as follows [23,24,29]: (11) where T is the absolute temperature (K) and R is the universal gas constant (8.314 J/mol/K). The changes in enthalpy (∆H) and entropy (∆S) can be obtained according to the van't Hoff equation (Fig.…”

Section: Determination Of Thermodynamic Parametersmentioning

confidence: 99%

Improved biosorption of phenol using crosslinked chitosan beads after modification with histidine and Saccharomyces cerevisiae

Nguyen

Juang

2015

Biotechnol Bioproc E

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The ability of chitosan beads modified with histidine and Saccharomyces cerevisiae using glutaraldehyde as a crosslinking agent (SC-HIS-CCBs) for the biosorption of phenol was studied. The surface of SC-HIS-CCBs was characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) analysis. Batch biosorption experiments using the SC-HIS-CCBs were then performed by varying contact time, solution pH (2.0 ~ 7.0), and initial phenol concentration (25 ~ 250 mg/L). The isotherm and kinetic data were fitted by suitable equations including the Langmuir, Freundlich, pseudo-firstorder, and pseudo-second-order equations. Thermodynamic parameters of phenol biosorption on the SC-HIS-CCBs were calculated. Desorption of phenol from the loaded SC-HIS-CCBs was performed with NaOH solution. The biosorption capacity of phenol of 28.4 mg/g on the SC-HIS-CCBs at pH 2.0 and 313 K, determined by the Langmuir equation, indicated the promising potential of such modified chitosan biosorbents.

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“…Chitosan can be modified easily using chemical or physical methods to prepare chitosan derivatives by attaching new functional groups. These processes may be used to enhance its adsorption capacity or adsorption kinetics, improving the affinity of the sorbent and changing the selectivity of sorption …”

Section: Introductionmentioning

confidence: 99%

A novel magnetic Preyssler acid grafted chitosan nano adsorbent: synthesis, characterization and adsorption activity

Tanhaei

Ayati

Bamoharram

et al. 2015

J. Chem. Technol. Biotechnol.

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BACKGROUND: This study concerns the application of magnetic heteropolyacids composite for the adsorption of organic compounds from aqueous solutions. A novel magnetic Preyssler/chitosan/Fe 3 O 4 nanoparticles composite (PCNF) adsorbent was designed using a one-pot synthesis method and characterized by multiple techniques including X-ray powder diffraction (XRD), infrared spectroscopy (FT-IR), N 2 adsorption-desorption isotherms and scanning electron microscopy (SEM).

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Recent advances in chitosan and its derivatives as adsorbents for removal of pollutants from water and wastewater

Cited by 66 publications

References 44 publications

Response surface methodology approach for optimization of methyl orange adsorptive removal by magnetic chitosan nanocomposite

Response surface methodology approach for optimization of methyl orange adsorptive removal by magnetic chitosan nanocomposite

Improved biosorption of phenol using crosslinked chitosan beads after modification with histidine and Saccharomyces cerevisiae

A novel magnetic Preyssler acid grafted chitosan nano adsorbent: synthesis, characterization and adsorption activity

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