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Membrane separation

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This article describes a novel process for recovery of aromatic amines and phenolic compounds form wastewaters, the membrane aromatic recovery aromatic system (MARS). Laboratory work on wastewaters containing aniline and phenol will be presented, including data... the potential for application of the process to a wide range of organic chemicals are presented. Keywords: Aniline; Phenol; Recovery; Membrane separation; Wastewater treatment 1. Introduction Phenolic compounds are used in phenolic resins, polycarbonates, biocides and agrochemicals. Aromatic amine ...
Desalination 148 (2002)

A primary reason for flux decline during the initial period of a membrane separation process is concentration polarization of the solute at the membrane surface. The objective of the present study was to analyze and model concentration polarization in spiral-wound seawater membrane elements. I ...
Desalination 146 (2002)

Permeation experiments of KCl, NaCl, LiCl, MgCl2, MgSO4 and K2SO4 solutions were carried out using two commercial nanofiltration membranes, which were NF45 (Dow Chemical Corporation) and SU200 (Toray Corporation) membranes. The effects of the type and the concentration of electrolytes... Corporation) membranes. The effects of the type and the concentration of electrolytes as well as the pH value of the electrolyte solution on the separation performance (such as rejections) were investigated. The experimental results showed that NF45 and SU200 membranes possess similar separation ...
Desalination 145 (2002)

... by electrodialysis process was studied. An asymmetric electrodialysis cell (consisted of three cation-selective and two anion-selective membranes) was constructed which was firstly tested by model solutions. Then measurements were carried out using pectin hydrolysate obtained by enzymatic... cell and 25.4% galacturonate content in the concentrate solution was achieved. Keywords: Organic acid; Sugar-beet pectin; Membrane separation; Agro-waste 1. Introduction Pectin-rich agro wastes can be utilized for manufacture of galacturonic acid. Galacturonic acid and its derivates ar ...
Desalination 241 (2009)

To reuse pretreated water effluent of the El-Nile Company for the food industry in Egypt, NF and RO membrane separation techniques were investigated. Two sets of experiments were carried out by using laboratory separation unit with maximum pressure of ...
Desalination 214 (2007)

A visual basic computer package was developed for the design and analysis of thermal and membrane desalination processes. The package includes conventional processes, i.e., reverse osmosis, single-effect mechanical vapor compression, multiple... or the membrane area, and a number of thermodynamic losses. Keywords: Desalination; Modeling; Computer simulation; Thermal desalination; Membrane separation; Economics 1. Introduction In arid and semi-arid regions around the globe, the desalination industry has proved to be the most viable solution t ...
Desalination 165 (2004)

... due to formation of a complex between iron oxide and boron. The finding was confirmed in a pilot study. Keywords: Boron removal; Reverse osmosis; Membrane separation; Iron oxide; Complexation effect; Water treatment 1. Introduction The World Health Organization has given a recommendation of below 0. ...
Desalination 172 (2005)

... for the best retention and a reasonable flux were found to be 20°C and 30 bar and for the minimal fouling were 30°C and 30 bar. Keywords: Membrane separation; Nanofiltration; Surfactant; Fouling index; Flux; ANOVA; Shapiro–Wilk test; Hartley test; Cochran test; Bartlett test 1. Introductio ...
Desalination 221 (2008)

... Membranes reduce the energy costs of atmospheric water generation by more than 50%. • We propose a model system to concentrate water vapor with membranes... 2013 Received in revised form 4 February 2014 Accepted 7 February 2014 Available online 4 March 2014 Keywords: Humidity harvesting Membrane separation Rainmaking Atmospheric water generator Freshwater sources System analysis a b s t r a c t The use of water vapor selective membranes can reduc ...
Desalination 339 (2014)

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