Adsorptive modelling of toxic cations and ionic dyes onto cellulosic extract

Babalola, Jonathan O.; Bamidele, Temitope M.; Adeniji, Elisha A.; Odozi, Nnenna W.; Olatunde, Abimbola M.; Omorogie, Martins O.

doi:10.1007/s40808-016-0246-z

Cited by 13 publications

(2 citation statements)

References 68 publications

(68 reference statements)

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“…[1,2] Cellulose and lignin could bind with heavy metals, which are dependent on their source of origin and relevant fraction of various constituents. [3][4][5] Similarly, a group of researchers reported that hemicellulose and pectin also could bind heavy metals (Pb, Cu, and Cd) that can improve health via fiber-containing food. [6] Various researchers investigated dietary fiber in terms of its potential to scavenge heavy metals after it enters the body [7][8][9] and to elucidate the dietic factors that could affect the heavy metal-binding capacity, some endogenous factors like proteins and exogenous factors like pH.…”

Section: Introductionmentioning

confidence: 99%

Adsorption mechanism modeling using lead (Pb) sorption data on modified rice bran-insoluble fiber as universal approach to assess other metals toxicity

Majeed

et al. 2019

International Journal of Food Properties

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The binding capacity of Pb on modified rice bran-insoluble fibers RBIF-0.2, RBIF-1.25, and RBIF-2.0 (0.2%, 1.25%, and 2.0% H 2 SO 4 with 1.25% KOH) having the variable specific surface area and cation-exchange capacity was evaluated. The Pb binding in terms of maximum binding capacity (BC max ) with RBIF increased with pH (2-7). However, the presence of sodium and calcium reduced the binding of Pb to RBIFs. Further, adsorption kinetics followed pseudo-second-order kinetic model when fitted to real Pb sorption data. However, sorption mechanism data (scanning electron microscopy images) were well fitted to Langmuir model instead of Freundlich and Dubinin-Radushkevich that suggests monomolecular adsorption of Pb to RBIF (<8 kJ/mol). Moreover, negative ΔG and positive ΔH of Pb 2+ sorption confirmed the occurrence of spontaneous and endothermic process. The modeling of single-metal (Pb) data will be advantageous to use as a universal model for other heavy metals that will save the experimental costs. The data on all other heavy metals could be used with chosen models to elucidate their sorption mechanism to control the metallic-induced toxicity. ARTICLE HISTORY

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Section: Introductionmentioning

confidence: 99%

Adsorption mechanism modeling using lead (Pb) sorption data on modified rice bran-insoluble fiber as universal approach to assess other metals toxicity

Majeed

et al. 2019

International Journal of Food Properties

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“…0 in all cases. This implies that intraparticle diffusion process was not the only rate controlling or limiting step for the biosorption process, but pore diffusion and film diffusion might have taken place in the rate controlling or limiting step [29,63,64]. The nonlinear plots (pseudo-first-order, pseudo-secondorder and intraparticle diffusion equations) for the removal of CR, MB, Pb 2?…”

Section: Equilibrium Kinetics and Thermodynamics Of Cr Mb CD 21 Anmentioning

confidence: 99%

Adsorption and desorption kinetics of toxic organic and inorganic ions using an indigenous biomass: Terminalia ivorensis seed waste

et al. 2016

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Environmental remediation has been a strategy employed by scientists to combat water pollution problems that have led to the scarcity of potable water. Hence, in this study, Terminalia ivorensis seed waste (TISW) was explored for the removal of Congo Red, Methylene Blue, Cadmium and Lead from aqueous solutions. Some experimental variables such as pH, biosorbent dose, initial solute ion concentration, agitation time and temperature were optimised. The surface microstructures of TISW were studied using proximate analysis, bulk density, specific surface area, pH of Point of Zero Charge, Fourier Transform Infra Red Spectroscopy, Thermogravimetric/Differential Thermal Analysis, Scanning Electron Microscopy and Energy Dispersive Analysis of X-ray. The maximum Langmuir monolayer saturation adsorption capacity, q max L , was obtained as 175.44 mg/g for the removal of Methylene Blue by TISW. Also, the q max L for CR, Cd(II) ion and Pb(II) ion were 85.47, 12.58 and 52.97 mg/g, respectively. Also, the pseudo-first-order constant, k 1 , and pseudo-second-order rate constant, k 2 , are 0.008-0.026 min -1 and 0.012-0.417 mg g -1 min -1 , respectively. Hence, TISW is recommended as a good adsorbent for the removal of both toxic industrial dyes and toxic metal ions from polluted water.

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Utilization of Pacara Earpod tree (Enterolobium contortisilquum) and Ironwood (Caesalpinia leiostachya) seeds as low-cost biosorbents for removal of basic fuchsin

Salomón

Georgin

Reis

et al. 2020

Environ Sci Pollut Res

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Wastes from the Pacara Earpod tree (Enterolobium contortisilquum) and Ironwood (Caesalpinia leiostachya) seeds were studied as biosorbents for the removal of basic fuchsin from waters. Both biosorbents were prepared and characterized by different analytical methods. The characterization data showed that both materials were mainly composed of lignin, cellulose, and hemicellulose. Both biosorbents exhibited roughened surfaces and surface functional groups such as C-H, C=O, C=C, C-O, C-N, and OH bonds. Furthermore, the XRD pattern shows an amorphous phase with a wide peak from 10 to 30° due to the lignin. In terms of dosage and pH, the use of 1 g L−1 and 9.0, respectively, is recommended. The initial concentrations for the biosorption kinetics ranged from 50 to 500 mg L−1, where the Pacara ear and the Ironwood reached an adsorption capacity of 145.62 and 100.743 mg g−1 for the 500 mg L−1. The pseudo-second-order was found to be the proper model for describing biosorption of basic fuchsin onto Pacara Earpod tree and Ironwood, respectively. For the isotherm experiments, the maximum experimental biosorption capacity was found to be 166.858 and 110.317 mg g−1 for the Pacara Earpod and Ironwood for the initial concentration of 500 mg L−1 at 328 K. The Langmuir and the Tóth models were the best for representing the equilibrium curves for the basic fuchsin on the Pacara Earpod and the Ironwood, respectively. Maximum adsorption capacities of 177.084 mg g−1 and 136.526 mg g−1 were achieved for the Pacara Earpod tree and Ironwood, respectively. The biosorption process was spontaneous, endothermic, and favorable for both biosorbents. The biosorbents were also applied for coloration removal of simulated textile effluents, reaching 66% and 54% for the Pacara Earpod and Ironwood, respectively. For the final application, the materials were used in fixed-bed biosorption, with an initial concentration of 200 mg L−1, reaching breakthrough times of 710 and 415 min, leading to biosorption capacities of the column of 124.5 and 76.5 mg g−1, for the Pacara Earpod and Ironwood, respectively.

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Adsorptive modelling of toxic cations and ionic dyes onto cellulosic extract

Cited by 13 publications

References 68 publications

Adsorption mechanism modeling using lead (Pb) sorption data on modified rice bran-insoluble fiber as universal approach to assess other metals toxicity

Adsorption mechanism modeling using lead (Pb) sorption data on modified rice bran-insoluble fiber as universal approach to assess other metals toxicity

Adsorption and desorption kinetics of toxic organic and inorganic ions using an indigenous biomass: Terminalia ivorensis seed waste

Utilization of Pacara Earpod tree (Enterolobium contortisilquum) and Ironwood (Caesalpinia leiostachya) seeds as low-cost biosorbents for removal of basic fuchsin

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