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• W4309307528 endingPage "126752" @default.
• W4309307528 startingPage "126752" @default.
• W4309307528 abstract "• A zero-waste biorefinery concept was developed by pyrolyzing the residual microalgae biomass. • The pyrolysis process was effectively modeled using an integrated ANN and RSM technique. • The maximum H 2 production of 44.46 vol% was produced at optimal conditions. • At 500 °C, max. hydrocarbons and min. N- & O-containing compounds observed in bio-oil. • With the increasing temperature, the biochar exhibited more cracks and holes. The present work focused on the pyrolysis-based valorization of microalgae biomass residual for the generation of sustainable fuel and value-added chemicals. Key pyrolysis factors, including temperature, residence time, particle size, and heating rate, were modeled via an artificial neural network (ANN) and response surface methodology (RSM) models. The use of such an integrated technique was able to conquer the individual constraints of both modeling approaches. RSM model for H 2 -rich syngas demonstrated that the value; R 2 = 0.99, minimum p = 0.00, and maximum F = 3877.16 has close relation among the statistical parameters. The ANN model for H 2 -rich syngas revealed that higher R 2 = 0.9985 and lower RSME = 0.1038 were obtained for the training phase, while; the higher R 2 and lower RSME values of 0.9862 and 0.2661 were estimated for the training phase hence showed a better agreement among the parameters. Optimum H 2 production of 44.46 vol% was produced at temperature = 516.76 °C, residence time = 17.7 min, particle size = 0.23 mm, and heating rate = 17.37 °C/min. All the pyrolytic products have been characterized in detail and are recommended for high end-use. The GC/MS technique revealed that bio-oil was constituted of various organic complexes, which could be used as a substitute for hydrocarbon fuels after undergoing certain upgradation procedures (e.g., hydrotreating, hydrodeoxygenation, hydrodenitrogenation, and hydrocracking) and extracted into different chemicals. In addition, the biochar was characterized using the SEM technique, which also demonstrated its potential as fuel and in a variety of other applications. The study showed that de-fatted Chlorella sorokiniana residue (De-CR) could be efficiently employed to produce bio-energy precursors." @default.
• W4309307528 created "2022-11-26" @default.
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• W4309307528 date "2023-02-01" @default.
• W4309307528 modified "2023-09-28" @default.
• W4309307528 title "Pyrolysis of de-fatted microalgae residue: A study on thermal-kinetics, products’ optimization, and neural network modelling" @default.
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