Optimization of a nanofiltration membrane process for tomato industry wastewater effluent treatment

Iaquinta, Marie; Stoller, Marco; Merli, C.

doi:10.1016/j.desal.2008.05.028

Cited by 51 publications

(36 citation statements)

References 13 publications

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“…M a n u s c r i p t 20 It is noteworthy that this work sought to provide information about the adjustability of the proposed model over a wider concentration range, also including high concentrations (100 g/L) of glucose, to simulate different food processing fluxes that work with high concentrations of sugars. There are many food industries that use high concentrations of glucose (Daufin et al, 2001;Iaquinta et al, 2009;Salehi, 2013), such as the sugar and winery industries, where molasses and vinasses are side-products, and industries that manufacture glucose syrup. In perspective, it would be interesting to test this model with other types of sugar solutions.…”

Section: Dspm Application and Membrane Characterization Using Unchargmentioning

confidence: 99%

Nanofiltration of glucose: Analysis of parameters and membrane characterization

Almazán

Romero-Dondiz

Rajal

et al. 2015

Chemical Engineering Research and Design

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Please cite this article as: Almazán, J.E., Romero-Dondiz, E.M., Rajal, V.B., Castro-Vidaurre, E.F.,Nanofiltration of glucose: analysis of parameters and membrane characterization, Chemical Engineering Research and Design (2014), http://dx.doi.org/10. 1016/j.cherd.2014.09.005 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. 4251006.E-mail address: emilioalmazan8787@gmail.com AbstractMembrane characterization and modeling of nanofiltration processes of uncharged solutes are of special interest for the food industry. In this work two commercial membranes, DK and DL, were used to concentrate glucose solutions. Membranes were characterized according hydrophobicity, thickness, porosity, and hydraulic permeability. The influence of pressure and concentration of glucose on the permeate flux and rejection were studied. Both membranes presented a great potential for the food industry due to their high rejection of glucose. The osmotic pressure model was combined with film theory and the real driven force was calculated taking into account the osmotic pressure and the concentration polarization. Both phenomena influenced the process (concentration polarization only in the most dilute solutions at low pressure) and the permeability for glucose solutions was similar to the hydraulic permeability. A mathematical model based on the Donnan-Steric Pore Model was used to determine the pore radius and the effective thickness of both membranes. As the concentration inside the pore (needed for the calculations) is difficult to measure experimentally, various alternatives wereproposed. The average of the concentration at the interface and permeate best fitted the experimental data. The model was applied successfully; the maximum error was 8% within the range of concentrations (5 -100 g/L) for the DL membrane and 5% for the DK membrane up to 50 g/L.Page 2 of 26 A c c e p t e d M a n u s c r i p t 2 HighlightsTwo membranes were characterized and used to concentrate glucose solutions Both membranes presented a great potential due to their high rejection of glucoseThe osmotic pressure and concentration polarization effects were taken into accountMembrane pore radius and effective thickness were determinedThe model fitted successfully the experimental data with maximum errors of 8%

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Section: Dspm Application and Membrane Characterization Using Unchargmentioning

confidence: 99%

Nanofiltration of glucose: Analysis of parameters and membrane characterization

Almazán

Romero-Dondiz

Rajal

et al. 2015

Chemical Engineering Research and Design

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“…In the past years, ultrafiltration (UF) and nanofiltration (NF) membranes have been increasingly implemented in water treatment processes for decontamination of wastewater of very diverse nature, including agro-food industries such as dairy [2], tomato [3], beverage [4], winery [5] and olive oil [6][7][8]. Today, UF and NF membrane operations have replaced most conventional separation proceedings in many wastewater treatment processes, as a result of the wide range of advantages of the former if compared to the latter, highlighting the lower specific energy consumption, minor investment and maintenance costs and higher efficiency.…”

Section: Introductionmentioning

confidence: 99%

Technical optimization of an integrated UF/NF pilot plant for conjoint batch treatment of two-phase olives and olive oil washing wastewaters

et al. 2015

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“…In fact, membrane processes are becoming increasingly used in purifying processes for water and groundwater, to replace classic separation processes, as well as for the reclamation of eluents of diferent origins, especially those by-produced in agro-industries [6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…Desalinationany pretreatment [5][6][7][8][9][10][11][12]. Therefore, adequate and optimally designed pretreatment processes on each particular feedstock, in other words, pretreatment tailoring of membrane processes, must be developed in order to maximize productivity and minimize fouling.…”

Section: Membrane Processes For Olive Mill Eluent Puriicationmentioning

confidence: 99%

“…On the other hand, RO membranes permit complying with the most stringent regulations for public health and environment protection. Both types of membranes are already applied in the management of industrial eluents of very diferent sectors, such as stainless steel [40], energy cogeneration [41], nuclear power [42], textile and tannery [43][44][45][46][47], coking [48,49], carwash [50], pulp and paper [34,51], pharmaceutical [52], and agro-food industries, such as dairy [13], tomato [12], and olive oil [5][6][7][8][9][10]24], among others. However, again, the problem of fouling is always present in the treatment of any kind of eluent by NF and RO membranes.…”

Section: Nanoiltration and Reverse Osmosis Membranesmentioning

confidence: 99%

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