TY - JOUR
T1 - Synthesis of Sustainable Chemicals from Waste Tea Powder and Polystyrene via Microwave-Assisted in-situ Catalytic Co-Pyrolysis: Analysis of Pyrolysis using Experimental and Modeling Approaches
AU - Suriapparao, Dadi V
AU - Sridevi, Veluru
AU - Ramesh, Potnuri
AU - Sankar Rao, Chinta
AU - Tukarambai, M
AU - Kamireddi, Dinesh
AU - Gautam, Ribhu
AU - Dharaskar, Swapnil A
AU - Pritam, Kocherlakota
N1 - KAUST Repository Item: Exported on 2022-09-14
PY - 2022/8/29
Y1 - 2022/8/29
N2 - In the current study, catalytic co-pyrolysis was performed on waste tea powder (WTP) and polystyrene (PS) wastes to convert them into value-added products using KOH catalyst. The feed mixture influenced the heating rates (17-75 oC/min) and product formation. PS promoted the formation of oil and WTP enhanced the char formation. The maximum oil yield (80 wt.%) was obtained at 15 g:5 g, and the maximum char yield (44 wt.%) was achieved 5 g:25 g (PS:WTP). The pyrolysis index (PI) increased with the increase in feedstock quantity. High PI was noticed at 25 g:5 g, and low PI was at 5 g:5 g (PS:WTP). Low energy consumption and low pyrolysis time enhanced the PI value. Significant interactions were noticed during co-pyrolysis. The obtained bio-oil was analyzed using GC-MS and plausible reaction mechanism is presented. Catalyst and co-pyrolysis synergy promoted the formation of aliphatic and aromatic hydrocarbons by reducing the oxygenated products.
AB - In the current study, catalytic co-pyrolysis was performed on waste tea powder (WTP) and polystyrene (PS) wastes to convert them into value-added products using KOH catalyst. The feed mixture influenced the heating rates (17-75 oC/min) and product formation. PS promoted the formation of oil and WTP enhanced the char formation. The maximum oil yield (80 wt.%) was obtained at 15 g:5 g, and the maximum char yield (44 wt.%) was achieved 5 g:25 g (PS:WTP). The pyrolysis index (PI) increased with the increase in feedstock quantity. High PI was noticed at 25 g:5 g, and low PI was at 5 g:5 g (PS:WTP). Low energy consumption and low pyrolysis time enhanced the PI value. Significant interactions were noticed during co-pyrolysis. The obtained bio-oil was analyzed using GC-MS and plausible reaction mechanism is presented. Catalyst and co-pyrolysis synergy promoted the formation of aliphatic and aromatic hydrocarbons by reducing the oxygenated products.
UR - http://hdl.handle.net/10754/680771
UR - https://linkinghub.elsevier.com/retrieve/pii/S0960852422011439
U2 - 10.1016/j.biortech.2022.127813
DO - 10.1016/j.biortech.2022.127813
M3 - Article
C2 - 36031137
SN - 0960-8524
VL - 362
SP - 127813
JO - Bioresource technology
JF - Bioresource technology
ER -
