Optimization of Energy-Proficient Infrared Radiated Rapid Hydrolysis …
263
reached a maximum value of 0.1527 mol/L corresponding to max Φ g (86.78 mol%).
Whereas, using traditional heating system, the RS yield increased slowly and reached
its maximum value ( Φ g = 45.62 mol%) at 30 min. Notably, in absence of catalyst,
a lower RS yield of 75.43 mol% was observed in comparison with that obtained
(86.78 mol%) in catalytic hydrolysis of PWPS by keeping all other factors at optimum
level.
Thus, it was found that IRR could accelerate the hydrolysis of pretreated WPS
(PWPS) significantly and also shortened the conversion time to obtain the maximum
Φ g as compared to the traditional heating method as IRR could penetrate hydrolysis
mix more intensely to disrupt cellulosic-crystalline structures. The impingement of
IRR causes accelerated stretching vibration of reactant molecules rendering rigorous
molecular collisions, thus, enhancing hydrolysis conversion of PWPS.
4 Conclusion
The present study demonstrates an energy-efficient novel hydrolysis process to
convert waste pineapple skin into RS using infrared radiated reactor. A significant
saving in batch time, and higher yield of RS at a considerably lower temperature
could be achieved compared to the traditional batch reactor. A significant amount
of energy could be saved through the application of infrared radiation (150 W) in
comparison with the traditional heating system (500 W). The present study also
demonstrates effective valorization of waste pineapple skin through the preparation
of RS by a cost-effective and environmentally benign process. The method may also
be exploited in the future for hydrolysis of other lignocellulosic biomass for the
synthesis of RS.
References
Chakraborty R, Sahu H (2014) Intensification of biodiesel production from waste goat tallow using
infrared radiation: process evaluation through response surface methodology and artificial neural
network. Appl Energy 114:827–836
Chakraborty R, RoyChowdhury D (2013) Fish bone derived natural hydroxyapatite-supported
copper acid catalyst: Taguchi optimization of semibatch oleic acid esterification. Chem Eng J
215–216:491–499
Girisuta B, Dussan K, Haverty D, Leahy JJ, Hayes MHB (2013) A kinetic study of acid catalysed
hydrolysis of sugar cane bagasse to levulinic acid. Chem Eng J 217:61–70
Huber GW, Iborra S, Corma A (2006) Synthesis of transportation fuels from biomass: chemistry,
catalysts, and engineering. Chem Rev 106:4044–4098
Kucuk MM, Demirbas A (1999) Kinetic study on hydrolysis of biomass (Ailanthus altissima chips)
by using alkaline-glycerol solution. Energ Convers Manage 40:1397–1403
Limayem A, Ricke SC (2012) Lignocellulosic biomass for bioethanol production: current
perspectives, potential issues and future prospects. Prog Energ Combust 4:449–467
263
reached a maximum value of 0.1527 mol/L corresponding to max Φ g (86.78 mol%).
Whereas, using traditional heating system, the RS yield increased slowly and reached
its maximum value ( Φ g = 45.62 mol%) at 30 min. Notably, in absence of catalyst,
a lower RS yield of 75.43 mol% was observed in comparison with that obtained
(86.78 mol%) in catalytic hydrolysis of PWPS by keeping all other factors at optimum
level.
Thus, it was found that IRR could accelerate the hydrolysis of pretreated WPS
(PWPS) significantly and also shortened the conversion time to obtain the maximum
Φ g as compared to the traditional heating method as IRR could penetrate hydrolysis
mix more intensely to disrupt cellulosic-crystalline structures. The impingement of
IRR causes accelerated stretching vibration of reactant molecules rendering rigorous
molecular collisions, thus, enhancing hydrolysis conversion of PWPS.
4 Conclusion
The present study demonstrates an energy-efficient novel hydrolysis process to
convert waste pineapple skin into RS using infrared radiated reactor. A significant
saving in batch time, and higher yield of RS at a considerably lower temperature
could be achieved compared to the traditional batch reactor. A significant amount
of energy could be saved through the application of infrared radiation (150 W) in
comparison with the traditional heating system (500 W). The present study also
demonstrates effective valorization of waste pineapple skin through the preparation
of RS by a cost-effective and environmentally benign process. The method may also
be exploited in the future for hydrolysis of other lignocellulosic biomass for the
synthesis of RS.
References
Chakraborty R, Sahu H (2014) Intensification of biodiesel production from waste goat tallow using
infrared radiation: process evaluation through response surface methodology and artificial neural
network. Appl Energy 114:827–836
Chakraborty R, RoyChowdhury D (2013) Fish bone derived natural hydroxyapatite-supported
copper acid catalyst: Taguchi optimization of semibatch oleic acid esterification. Chem Eng J
215–216:491–499
Girisuta B, Dussan K, Haverty D, Leahy JJ, Hayes MHB (2013) A kinetic study of acid catalysed
hydrolysis of sugar cane bagasse to levulinic acid. Chem Eng J 217:61–70
Huber GW, Iborra S, Corma A (2006) Synthesis of transportation fuels from biomass: chemistry,
catalysts, and engineering. Chem Rev 106:4044–4098
Kucuk MM, Demirbas A (1999) Kinetic study on hydrolysis of biomass (Ailanthus altissima chips)
by using alkaline-glycerol solution. Energ Convers Manage 40:1397–1403
Limayem A, Ricke SC (2012) Lignocellulosic biomass for bioethanol production: current
perspectives, potential issues and future prospects. Prog Energ Combust 4:449–467