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Khataee A.R.,University of Tabriz | Kasiri M.B.,Tabriz Islamic Art University
Clean - Soil, Air, Water | Year: 2011

A growing world population, unrelenting urbanization, increasing scarcity of good quality water resources, and rising fertilizer applications are the driving forces behind the accelerating upward trend in the use of efficient methods of water and wastewater treatment such as biological processes. Due to the complexity of the reactions in biological processes, a few studies have been performed involving the modeling of biological removal of water pollutants. Thus, the application of the artificial neural networks (ANNs) to predict the performance of the biological systems has been attempted. ANNs are computer-based systems that are designed to simulate the learning process of neurons in the human brain. One of the characteristics of modeling based on ANNs is that it does not require the mathematical description of the phenomena involved in the process. This review article describes the application of ANNs for modeling of biological water and wastewater treatment processes. Examples of early applications of ANNs in modeling and simulation of biological water and wastewater treatment processes in the presence of various microalgae, macroalgae, bacteria, microbes, yeasts, anaerobic sludge, aerated submerged biofilms, and submerged membrane bioreactors are reviewed. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source


Kasiri M.B.,Tabriz Islamic Art University | Khataee A.R.,University of Tabriz
Environmental Technology (United Kingdom) | Year: 2012

The effects of different operational parameters on the decolorization of a dye solution containing C.I. Acid Blue 92 (AB92) or C.I. Acid Black 1 (AB1) by the UV/H 2O 2 process were optimized using response surface methodology (RSM). The reaction time, dye and H 2O 2 initial concentrations and distance of the UV lamp from the solution were chosen as input variables. The removal process was performed according to a central composite design. Predicted results by the proposed models were in good agreement with experimental values (R 2 = 0.942 and 0.957 for AB92 and AB1, respectively). The optimum points were located by graphical response surfaces and contour plots. The removal process of the dyes was compared and the efficiency difference justified by considering the chemical structure of the dyes. Additionally, the electrical energy consumption and the related treatment costs were estimated employing the figure-of-merit electrical energy per order (E EO). © 2012 Taylor & Francis. Source


Sadeghi-Kiakhani M.,Iran Institute for Color Science and Technology | Safapour S.,Tabriz Islamic Art University
Clean Technologies and Environmental Policy | Year: 2014

Chitosan-poly(propylene imine) dendrimer (CS-PPI) hybrid was successfully prepared and grafted on wool substrate. The impact of key operational grafting factors, i.e., pH, temperature, and CS-PPI concentration on grafting yield, was investigated through dyeing with two commercial reactive dyes, C.I. Reactive Orange 122 (RO122) and C.I. Reactive Red 195 (RR195). The optimal grafting values obtained were pH 6, temperature 70 °C, and 20 % owf CS-PPI concentration. The performance of CS-PPI-grafted wool was investigated in terms of dyeing ability, color fastness, and shrinkage of wool fabrics. Grafted wool actually showed lowered optimal dyeing temperature of 40 °C as compared to those of pristine wool (80 °C). The color depth (K/S) comparison of CS-PPI grafted wool dyed with no salt usage in dye bath with those of pristine wool conventionally dyed with 30 % owf salt revealed that both grafted and pristine samples had similar color depth suggesting elimination of salt from reactive dye bath so-called “salt free dyeing” for grafted wool. No remarkable change in color fastness of dyed grafted wool fabrics against wash, rub, light, and perspiration was observed and all were in good and acceptable level. In addition, the shrink-proofing property of CS-PPI grafted wool fabrics was also enhanced. The results of this study clearly indicated that CS-PPI hybrid is a high potential novel bio-compatible compound which can be successfully used in finishing of wool in both eco-friendliness and energy saving standpoint in dyeing process. © 2014 Springer-Verlag Berlin Heidelberg Source


Sekhavat Y.A.,Tabriz Islamic Art University
International Journal of Computer Games Technology | Year: 2016

This paper presents the architecture of KioskAR, which is a pervasive game implemented using augmented reality (AR). This game introduces a new business model that makes it possible for players to present their artworks in virtual kiosks using augmented reality, while they are having fun playing the game. In addition to competition between the players in the game, this game requires social interaction between players to earn more points. A user study is conducted to evaluate the sense of presence and the usability of the application. The results of experiments show that KioskAR can achieve a high level of usability as well as sense of presence. © 2016 Yoones A. Sekhavat. Source


Khataee A.R.,University of Tabriz | Kasiri M.B.,Tabriz Islamic Art University
Journal of Molecular Catalysis A: Chemical | Year: 2010

Synthetic dyes are a major part of our life as they are found in the various products ranging from clothes to leather accessories to furniture. These carcinogenic compounds are the major constituents of the industrial effluents. Various approaches have been developed to remove organic dyes from the natural environment. Over the past few years, there has been an enormous amount of research with advanced oxidation processes (AOPs) as an effective method of wastewater treatment. Among AOPs, heterogeneous photocatalytic process using TiO2 nanomaterials appears as the most emerging destructive technology due to its cost effectiveness and the catalyst inert nature and photostability. This review deals with the photocatalytic degradation of organic dyes containing different functionalities using TiO2 nanomaterials in aqueous solution. It first discusses the photocatalytic properties of nanostructured TiO2. The photocatalytic degradation rate strongly depends on the basic structure of the molecule and the nature of auxiliary groups attached to the aromatic nuclei of the dyes. So, this review then explains the influence of structure of dyes on their photocatalytic degradation rates. The influences of different substitutes such as alkyl side chains, methyl, nitrate, hydroxyl and carboxylic groups as well as the presence of chloro atom have been discussed in detail. © 2010 Elsevier B.V. Source

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