Economic assessment of waste tyres pyrolysis technology: a case study for Gauteng Province, South Africa
- Authors: Pilusa, Jefrey , Shukla, Mukul , Muzenda, Edison
- Date: 2014
- Subjects: Waste tyres - South Africa - Gauteng , Waste tyre pyrolysis - South Africa - Gauteng
- Type: Article
- Identifier: uj:4905 , ISSN 2349-1442 , http://hdl.handle.net/10210/13004
- Description: This study evaluates the viability of pyrolysis technology as a treatment process for waste tyres with the aim of producing alternative fuel and other high value products. A financial model was formulated to evaluate the economic feasibility of this technology as an alternative disposal method. It was discovered that pyrolysis technology becomes more viable when there is guaranteed product off-takes at a given price. Further processing of the crude tyre oil and carbon black is important for production of consistent quality products. Gauteng province alone will require a capital injection of US $59.8 million to setup 14 waste tyres pyrolysis treatment facilities to treat 134,922 tons per annum of waste tyres with a potential investment return and gross margin of 29.79% and 34.59%, respectively. These facilities can produce up to 46.8 million litres per annum of refined tyre derived fuel at cost of $ 0.516/litre and other secondary value add products for local and export markets.
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Effect of in-line post diesel filtration on engine exhaust emissions and fuel consumption
- Authors: Pilusa, Jefrey , Muzenda, Edison , Shukla, Mukul
- Date: 2013
- Subjects: Compression ignition , Diesel injectors , Engine performance , Fuel filtration , Internal combustion
- Type: Article
- Identifier: uj:4841 , http://hdl.handle.net/10210/12489
- Description: The work presented in this article investigated the effect of a Whale diesel filter on engine’s exhaust emissions, fuel consumption and performance. A stationary ADE 407T heavy duty diesel engine coupled to a hydraulic dynamometer was used to investigate the performance, fuel efficiency and emissions tests under controlled conditions in a laboratory.
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Investigation of single pass filtration of tyre derived fuel-diesel blend
- Authors: Pilusa, Jefrey T. , Muzenda, Edison , Shukla, Mukul
- Date: 2013
- Subjects: Waste tyre pyrolysis , Tyre derived fuel , Single pass filtration
- Type: Article
- Identifier: uj:4893 , http://hdl.handle.net/10210/12607
- Description: This research reports the experimental investigation of single pass filtration of tyre derived fuel and low sulphur diesel blend using a bench scale two stage micro-molecular filtration set-up. Crude tyre pyrolitic oil obtained from slow pyrolysis of waste tyres was distillated at 250ºC to recover the light to medium fraction from the oil. The distillate was characterized and blended with low sulphur diesel at a volume ratio of 1.5:1 for bench scale filtration tests. Optimum packing densities for both micro and molecular filter media were determined followed by single pass filtration to evaluate the contaminants removal efficiencies. It was observed that the selected packing density of 168kg/m3 and pattern for micro filter medium can remove up to 2.5μm particle size in the fuel. The 18% reduction in total sulphur in the fuel after filtration was an indication of liquid phase mass transfer (molecular filtration) on the active surface of the molecular sieves.
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Molecular filtration of rubber derived fuel
- Authors: Pilusa, Jefrey , Muzenda, Edison , Shukla, Mukul
- Date: 2013
- Subjects: Pyrolysis fuel , Waste-to-energy , Rubber derived fuel
- Type: Article
- Identifier: uj:4965 , http://hdl.handle.net/10210/13066
- Description: The work presented in this article reviews the possible methods for removal of mercaptans from distilled rubber derived fuel. Distilled rubber derived fuel is a potential additive for diesel fuel; therefore reduction of sulphur compounds in this fuel is essential for application in compression ignition engines. Membrane filtration of distilled rubber fuel using 13-X molecular sieves has shown a significant reduction in sulphur content. It was observed that distilled rubber fuel can be effectively filtered via single pass to remove up to 53.67% of the fuel’s initial sulphur.
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Pyrolitic tyre derived fuel : a review
- Authors: Pilusa, Jefrey T. , Shukla, Mukul , Muzenda, Edison
- Date: 2013
- Subjects: Alternative fuel , Waste tyre pyrolysis , Waste tyre utilization
- Type: Article
- Identifier: uj:4859 , http://hdl.handle.net/10210/12535
- Description: This paper reviews the potential of using waste tyre pyrolitic fuel as an alternative energy taking into account its environmental impact and national regulations. The properties of tyre derived oil and its derivatives were evaluated as a potential alternative low cost fuel for various industrial applications. The benefit of pyrolysis versus landfill disposal of waste tyres while producing low cost fuel and other value add products remains a driving force for this initiative. The downstream challenges associated with combustion of high sulphur bearing fuels such as tyre pyrolitic fuels calls for more research to into purification and refining of these fuels. Environmental Legislations on permitting the fuel production facilities, blending of the fuel derivatives with existing commercial diesel need to be clearly defined and facilitated accordingly.
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