Management of printed circuit boards by newly designed thermal pyrolytic process: Process optimization by RSM approach

The present research focuses on evaluating the kinetics for the liquefaction process and optimizing the process variable using Design expert software to maximize oil yield and by suppressing by‐products like gas and char. Optimum conditions for the maximum yield of oil (25.04%) was calculated as375°...

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Bibliographic Details
Published in:Environmental progress 2019-03, Vol.38 (2), p.489-499
Main Authors: Jayapradha, A., AbbasMohaideen, J., Senthil Kumar, P., Kavitha, V., Narendrakumar, G.
Format: Article
Language:English
Subjects:
Calorific value
Circuit boards
Circuit design
Design optimization
Heating rate
Kinetics
Liquefaction
Oil
optimization
Organic chemistry
printed circuit boards
Process variables
pyrolysis
response surface methodology
Retention time
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Summary:The present research focuses on evaluating the kinetics for the liquefaction process and optimizing the process variable using Design expert software to maximize oil yield and by suppressing by‐products like gas and char. Optimum conditions for the maximum yield of oil (25.04%) was calculated as375°C, 45 min retention time, 3–5 mm particle size and at a constant heating rate of 15 °C min−1. Coats Redfern's approach showed maximum R2 of 0.9459 which requires less activation energy of 61.44 kJ kg−1 mol−1. The endothermic heat required for liquefaction was 20.91 MJ kg−1. The calorific value of oil was measured as 6.502 MJ kg−1. © 2018 American Institute of Chemical Engineers Environ Prog, 38: 489–499, 2019
ISSN:1944-7442
1944-7450
DOI:10.1002/ep.13002