In this investigation, an aqueous two-phase system method (ATPS) utilised to the assessment of the formic acid extraction. ATPS includes the polymer PEG (4000 and 8000) and different phosphate salt...
#1Marziyeh Osloob(SUTECH: Shiraz University of Technology)H-Index: 1
#2Aliakbar Roosta(SUTECH: Shiraz University of Technology)H-Index: 9
Abstract Aqueous two-phase systems are useful for separating biological materials. In this study, the phase diagram of the ternary system of choline chloride, K 2 HPO 4 and water was determined at 298.15 K and 0.1 MPa. In this regard, the binodal curves between the single liquid phase, liquid-liquid two-phase region, solid-liquid-liquid three-phase region, and solid-liquid two-phase region were determined experimentally. Then, the liquid-liquid two-phase region as an aqueous two-phase system was...
Last. Alireza Bahadori(SCU: Southern Cross University)H-Index: 40
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AbstractPolycyclic aromatic hydrocarbons (PAHs) are Canceriogenic and mutagenic substances. These compounds are released in the environment by anthropogenic and natural sources. In this work, an adaptive neuro-fuzzy inference system (ANFIS) was employed to model the PAHs formation in sea sediment. Development of ANFIS model is on the basis of the Gaussian membership function. The result obtained by ANFIS model was analyzed with the statistical parameters such as mean squared error (MSE), mean ab...
Last. Amir Mohammadi(UKZN: University of KwaZulu-Natal)H-Index: 77
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Abstract Cetane number (CN) is one of the key factors of biodiesels and other diesel fuels. It is an indicator of ignition speed and required compression for ignition. CN estimation of biodiesel based on fatty acid methyl esters (FAME) composition was the main goal of this work. Application of artificial neural network (ANN) combined with particle swarm optimization (PSO) and teaching-learning based optimization (TLBO) is discussed in this communication. A number of 232 fuel samples was derived ...
Abstract The application of conventional organic solvents has been essential in several steps of bioprocesses in order to achieve sufficient economic efficiency. The use of organic solvents is frequently used either to partly or fully replace water in the reaction medium or as a process aid for downstream separation. Nowadays, manufacturers are increasingly requested to avoid and substitute solvents with hazardous potential. Therefore, the solvent selection must account for potential environment...
Abstract Partition performance of molybdenum (VI) by aqueous two-phase systems (ATPSs) composed of poly (ethylene glycol) (PEG1000, PEG2000 and PEG4000) + sodium sulfate + H2O without any extractant was systematically studied. Response surface optimization method was applied to study the effects of different factors such as, the type and concentration of PEG, sodium sulfate concentration, molybdenum concentration and temperature on the phase volume ratio, partition coefficient and extraction rat...
Last. Lin Wanping(STU: Shantou University)H-Index: 1
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Abstract In this paper, the binodal data of aqueous two-phase system (ATPS) containing imidazolium-based ionic liquids (chlorinated 1-ethyl-3-methylimidazole, [Emim]Cl), and a non-ionic surfactant (octylphenol polyethoxylene, Triton X-100) was obtained by means of the cloud point method in the temperature intervals T = (288.15–308.15) K. It was found that the [Emim]Cl/Triton X-100 ATPS was sensitive to temperature and had a long phase segregation time. Screening experiments of various additives ...
The traditional methods of designing antennas are not suitable in case of fractal antennas due to non availability of accurate mathematical design expressions. Recently, ANN model relating the physical and electromagnetic parameters of the fractal antenna to be designed is used as objective function of the optimization algorithm and it has been shown as an effective approach. In presented paper, ANN ensemble model has been used as the objective function of a PSO algorithm to calculate the optima...
Last. Mohammad Reza Dehghani(IUST: Iran University of Science and Technology)H-Index: 17
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Abstract In this work the partitioning behavior of Hg(II), Zn(II) and Co(II) was measured in a polyethylene glycol based aqueous two phase system (PEG–ATPS) containing Na2CO3 as a phase forming salt. The experiments were performed by mixing equal weights of 30% (w/w) PEG–6000 solution and 10% (w/w) Na2CO3 solution. The partitioning of ions was studied at various concentration of iodide as extracting agent, stock salt solution pH, temperature and initial metal ion concentration. The experimental ...
Asphaltene can precipitate in oil reservoirs as a result of natural depletion and/or gas injection crippling the oil production performance. Most of the conventional models for asphaltene precipitation cannot precisely capture the asphaltene precipitation at a wide pressure range and for different oil types. To have a precise model that can be used for various oil types at a wide range of pressure conditions, a comprehensive artificial neural network (ANN) model was proposed to estimate the weig...
Abstract The backpropagation (BP) artificial neural network (ANN) is a renowned and extensively functional mathematical tool used for time-series predictions and approximations; which also define results for non-linear functions. ANNs are vital tools in the predictions of toxicant levels, such as polycyclic aromatic hydrocarbons (PAH) potentially derived from anthropogenic activities in the microenvironment. In the present work, BP ANN was used as a prediction tool to study the potential toxicit...
In this paper, two types of machine learning, namely neuro-fuzzy inference system (ANFIS) and multilayer perceptron (MLP), have been studied to model light hydrocarbons’ solubility solvent in bitum...