Nanofiltration membranes to reduce phenol concentration in wastewater

Bódalo, A.; Gómez, E.; Hidalgo, A.M.; Gómez, M.; Murcia, M.D.; López, Inés López

doi:10.1016/j.desal.2009.02.037

Cited by 85 publications

(46 citation statements)

References 23 publications

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“…Gibbs free energy (DG) and entropy change (DS) can be calculated from Eqs. (9) and (10), respectively. Based on the literature [28], adsorption process DG values in the -40 to 0 kJ mol -1 range correspond to physical processes, while those with values in the -80 to -400 kJ mol -1 range correspond to chemisorption.…”

Section: Adsorption Thermodynamicsmentioning

confidence: 98%

“…Based on the various methods and technical processes, the biodegradation, photocatalytic degradation, chemical coagulation, chemical oxidation, solvent extraction, membrane separation, and adsorption have been employed to purify and separate phenol in wastewater treatment [4][5][6][7][8][9][10][11]. Without doubt, adsorption is one of the most effective techniques for phenol removal from aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

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A novel polymeric adsorbent by a self-doped manner: synthesis, characterization, and adsorption performance to phenol from aqueous solution

et al. 2016

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The organic-inorganic self-doped poly (vinyltrimethoxy silane-ethylene glycol dimethacrylate) (VE resin) was synthesized by solution polymerization, hydrolysis and dehydration condensation. In this method, ethylene glycol dimethacrylate (EGDMA) was used as cross-linked reagent to form a three-dimensional network structure. Then, the system was prepared by radical polymerization in the presence of the hydrolysis of -OCH 3 and the dehydration condensation of Si-OH. The maximum adsorption capacity 75.68 mg g -1 was achieved when pH was 6, the contact time 60 min, the adsorbent dose 0.1 g, the initial concentration 3000 mg L -1 and the temperature 293 K. The adsorption kinetics followed the pseudo-second-order kinetic model, and the intra-particle diffusion was but not the only rate-limiting step. Adsorption isotherms of phenol were linearly correlated and found to be well represented by the Freundlich model. Thermodynamic parameters such as changes in the enthalpy (DH), free energy (DG) and entropy (DS) indicated that the adsorption process of phenol on VE resin were physical and exothermic. After four regeneration recycles, the adsorption capacity of VE resin remained at 95.04 % of the initial value, which illustrated that it possessed good regeneration capacity.

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Section: Adsorption Thermodynamicsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

A novel polymeric adsorbent by a self-doped manner: synthesis, characterization, and adsorption performance to phenol from aqueous solution

et al. 2016

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“…Our research group has studied the removal of some typical organic compounds such as phenol and atrazine using NF and RO membranes [27][28][29]. The performance of three RO membranes (two of polyamide and one of polyether sulfone) to remove aniline from aqueous solutions was also studied [2].…”

Section: Introductionmentioning

confidence: 99%

Modeling of Aniline Removal by Reverse Osmosis Using Different Membranes

et al. 2011

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The behavior of different reverse osmosis membranes, namely, HR98PP, SEPA-MS05, and DESAL-3B, was compared with the one predicted by a solution-diffusion model. This model assumes that the membrane has a homogeneous, nonporous surface layer and uses two main parameters, permeate concentration C p and volumetric permeate flux Q p , to characterize the membrane system. In order to calculate these parameters, the theoretical values of water and solute permeability constants, A w and B s , and the osmotic pressure coefficient, W, were initially determined. Using the software Sigma Plot V 10.0, accurate values of W, Q p , and C p were only obtained for the DESAL-3B membrane, i.e., the selected solutiondiffusion model can be applied to this membrane.

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“…Also, phenol is potential human carcinogen and is of considerable health concern, even at low concentration. Owing to their toxic effects, including permeabilisation of cellular and cytoplasmic coagulation, phenolic contaminants can damage sensitive cells and thus cause profound health and environmental problems (7,(11)(12)(13). According to the classification of United State Environmental Protection Agency (USEPA), phenol compositions are among the prior combinations.…”

Section: Introductionmentioning

confidence: 99%

“…Up to know different methods are applied to eliminate phenol combinations from the water environmental like biologic filtration by ultrasound waves, photocatalistic destruction, membranous filtration, enzymatic filtration, and extraction by solvent, chemical oxidation, light oxidation, photochemical destruction and wet oxidation (11)(12)(13)(14)(15)(16)29). Most of these techniques have especial failures like high operative and device costs, needs for additive chemical substrate, high energy consumption, needs to further space and producing mug and toxins (30,31).…”

Section: Introductionmentioning

confidence: 99%

The Evaluation of Removal Efficiency of Phenol from Aqueous Solutions using Moringa Peregrina Tree Shell Ash

Zarei

Bazrafshan²,

Faridi

et al. 2013

Iran J Health Sci

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Background and purpose: Phenol is one of prevalent contaminants found in many industrial wastewaters. The combination with special features, such as high toxicity, carcinogenic properties, vitality gathering ability, low biodegradation potentiality and others, based on the U.S Environmental Protection Agency, classified as a priority pollutant. The purpose of this study was to determine the efficiency of Moringa Peregrina tree shell ash for the removal of phenol from aqueous solutions. Materials and Methods:This study is experimental and pilot scale. To determine the efficiency of Moringa Peregrina tree shell ash for the removal of phenol from aqueous solutions; the examination was carried out in a batch system. To achieve the aim of this study, the effect of each of the parameters affecting the adsorption process, such as initial pH of solution, contact time, adsorbent dose and initial concentration of phenol in solution were studied.Results: The results showed that the highest percentage of phenol removal by the ash occurred at pH 6, initial concentration100 mg.L -1 and adsorbent dose 0.4 g/l in which the 79.96% phenol was removed. For the analysis of the absorption constant, the Freundlich and Langmuir isotherm were used. The results showed that the experimental data fit the Langmuir (R 2 =0.9833) much better than the Freundlich model (R 2 =0.9373). Conclusion:According to the results of this study, it was found that the Moringa Peregrina tree shell ash is not only a low-cost adsorbent but also has a high performance in the removal of phenol from aqueous solutions.

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Nanofiltration membranes to reduce phenol concentration in wastewater

Cited by 85 publications

References 23 publications

A novel polymeric adsorbent by a self-doped manner: synthesis, characterization, and adsorption performance to phenol from aqueous solution

A novel polymeric adsorbent by a self-doped manner: synthesis, characterization, and adsorption performance to phenol from aqueous solution

Modeling of Aniline Removal by Reverse Osmosis Using Different Membranes

The Evaluation of Removal Efficiency of Phenol from Aqueous Solutions using Moringa Peregrina Tree Shell Ash

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