scholarly journals The development of an artificial neural network – genetic algorithm model (ANN-GA) for the adsorption and photocatalysis of methylene blue on a novel sulfur–nitrogen co-doped Fe2O3 nanostructure surface

RSC Advances ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 5951-5960 ◽  
Author(s):  
Roya Mohammadzadeh Kakhki ◽  
Mojtaba Mohammadpoor ◽  
Reza Faridi ◽  
Mehdi Bahadori

In this research an S-N doped Fe2O3 nanostructure is synthesized and its adsorption ability and photocatalytic activity were evaluated. The optimum experimental conditions were obtained and an ANN-GA model was proposed for predicting experimental values.

Author(s):  
Sergio Davalos ◽  
Richard Gritta ◽  
Bahram Adrangi

Statistical and artificial intelligence methods have successfully classified organizational solvency, but are limited in terms of generalization, knowledge on how a conclusion was reached, convergence to a local optima, or inconsistent results. Issues such as dimensionality reduction and feature selection can also affect a model's performance. This research explores the use of the genetic algorithm that has the advantages of the artificial neural network but without its limitations. The genetic algorithm model resulted in a set of easy to understand, if-then rules that were used to assess U.S. air carrier solvency with a 94% accuracy.


2011 ◽  
Vol 63 (5) ◽  
pp. 977-983 ◽  
Author(s):  
M. T. Garza-González ◽  
M. M. Alcalá-Rodríguez ◽  
R. Pérez-Elizondo ◽  
F. J. Cerino-Córdova ◽  
R. B. Garcia-Reyes ◽  
...  

An artificial neural network (ANN) was used to predict the biosorption of methylene blue on Spirulina sp. biomass. Genetic and anneal algorithms were tested with different quantity of neurons at the hidden layers to determine the optimal neurons in the ANN architecture. In addition, sensitivity analyses were conducted with the optimised ANN architecture for establishing which input variables (temperature, pH, and biomass dose) significantly affect the predicted data (removal efficiency or biosorption capacity). A number of isotherm models were also compared with the optimised ANN architecture. The removal efficiency or the biosorption capacity of MB on Spirulina sp. biomass was adequately predicted with the optimised ANN architecture by using the genetic algorithm with three input neurons, and 20 neurons in each one of the two hidden layers. Sensitivity analyses demonstrated that initial pH and biomass dose show a strong influence on the predicted removal efficiency or biosorption capacity, respectively. When supplying two variables to the genetic algorithm, initial pH and biomass dose improved the prediction of the output neuron (biosorption capacity or removal efficiency). The optimised ANN architecture predicted the equilibrium data 5,000 times better than the best isotherm model. These results demonstrate that ANN can be an effective way of predicting the experimental biosorption data of MB on Spirulina sp. biomass.


2013 ◽  
Vol 14 (7) ◽  
pp. 1220-1226 ◽  
Author(s):  
Subhasis Das ◽  
Anindya Ghosh ◽  
Abhijit Majumdar ◽  
Debamalya Banerjee

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