An experimental study on thermo-catalytic pyrolysis of plastic waste using a continuous pyrolyser

2017 ◽  
Vol 67 ◽  
pp. 143-154 ◽  
Author(s):  
Anthony R. Auxilio ◽  
Wei-Lit Choo ◽  
Isha Kohli ◽  
Srikanth Chakravartula Srivatsa ◽  
Sankar Bhattacharya
Keyword(s):  
Experimental Study ◽  
Catalytic Pyrolysis ◽  
Plastic Waste

scholarly journals An Experimental Study of Plastic Waste as Fine Aggregate Substitute for Environmentally Friendly Concrete

2021 ◽  
Vol 6 (3) ◽  
pp. 179-190
Author(s):  
Anita Intan Nura Diana ◽  
Subaidillah Fansuri ◽  
Akhmad Feri Fatoni
Keyword(s):  
Experimental Study ◽  
Compressive Strength ◽  
Data Analysis ◽  
Environmentally Friendly ◽  
Plastic Waste ◽  
Fine Aggregate ◽  
Simultaneous Effect ◽  
Plastic Bottle ◽  
Maximum Compressive Strength ◽  
Test Objects

Decomposing plastics, including plastic bottles, is a very difficult process because it takes 50-100 years. Every year, the use of plastic bottles is increasing, but only few people are willing to treat plastic bottle waste. In this study, plastic bottle waste is used as a substitute of fine aggregate and shaped in such a way to have a sand-like gradation. The variations of graded plastic bottle waste are 0%, 5%, 10%, and 12%. The test objects for each variation consist of three specimens. Data are analyzed by using regression and classical assumption test with SPSS program. The results of the data analysis show that there is a simultaneous effect on the compressive strength with variations in plastic waste substitution. The compressive strength decreases with the increase in the percentage of plastic added. Maximum compressive strength is at the variations of 0% and 5% with19.192 MPa and 16.414 MPa, respectively.

scholarly journals Catalytic Pyrolysis of a Residual Plastic Waste Using Zeolites Produced by Coal Fly Ash

Catalysts ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1113
Author(s):  
Marco Cocchi ◽  
Doina De Angelis ◽  
Leone Mazzeo ◽  
Piergianni Nardozi ◽  
Vincenzo Piemonte ◽  
...  
Keyword(s):  
Fly Ash ◽  
Energy Demand ◽  
Catalytic Pyrolysis ◽  
Low Cost ◽  
Coal Fly Ash ◽  
Plastic Waste ◽  
Scanning Calorimetry ◽  
Contact Mode ◽  
Degradation Temperature ◽  
Pyrolysis Oils

The plastic film residue (PFR) of a plastic waste recycling process was selected as pyrolysis feed. Both thermal and catalytic pyrolysis experiments were performed and coal fly ash (CFA) and X zeolites synthesized from CFA (X/CFA) were used as pyrolysis catalysts. The main goal is to study the effect of low-cost catalysts on yields and quality of pyrolysis oils. NaX/CFA, obtained using the fusion/hydrothermal method, underwent ion exchange followed by calcination in order to produce HX/CFA. Firstly, thermogravimetry and differential scanning calorimetry (TG and DSC, respectively) analyses evaluated the effect of catalysts on the PFR degradation temperature and the process energy demand. Subsequently, pyrolysis was carried out in a bench scale reactor adopting the liquid-phase contact mode. HX/CFA and NaX/CFA reduced the degradation temperature of PFR from 753 to 680 and 744 K, respectively, while the degradation energy from 2.27 to 1.47 and 2.07 MJkg−1, respectively. Pyrolysis runs showed that the highest oil yield (44 wt %) was obtained by HX/CFA, while the main products obtained by thermal pyrolysis were wax and tar. Furthermore, up to 70% of HX/CFA oil was composed by gasoline range hydrocarbons. Finally, the produced gases showed a combustion energy up to 8 times higher than the pyrolysis energy needs.

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