Reverse Logistics for Recycling: Challenges Facing the Carpet Industry

Helms, Marilyn M.; Hervani, Aref A.

doi:10.1007/1-84628-299-3_7

Cited by 4 publications

(7 citation statements)

References 8 publications

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“…3) Educating programs to all the actors involved in the reverse logistics process including customers (Helms & Hervani, 2006); 4) Although many companies guarantee the quality of remanufactured items to be the same to that of newly produced items, not all customers generally perceive remanufactured and new items to be the same. A price differential is offered to customers to entice customers to purchase remanufactured products.…”

Section: Financial and Marketing Levelmentioning

confidence: 99%

Inventory management in reverse logistics with imperfect production, learning, lost sales, subassemblies, and price/quality considerations

Saadany¹

2021

Preprint

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Reverse Logistics is the flow and management of products, packaging, components, and information from the point of consumption (i.e., the market) to the point of origin (i.e., manufacturers and suppliers). It is a collection of practices similar to those of supply chain management, but in the opposite direction, from downstream to upstream. Reverse logistics is a valuable solution to the hazards jeopardizing the environment, and it involves activities such as reuse, repair, remanufacture, refurbish, reclaim and recycle.Reverse logistics became an established line of research, covering several areas, including inventory control; though, several research gaps still exist, such as: ignoring switching costs between production and remanufacturing processes and learning effects, the assumption that production and remanufacturing processes are of perfect quality, remanufactured products are assumed to be as-good-as new, the assumption that returned products are treated as whole products while ignoring disassembly, collection rate of used items is independent of price and quality, and the assumption that pure remanufacturing and production policies are optimal. These research gaps are addressed in mathematical models to bring reverse logistics optimization closer to reality. Deterministic and stochastic components are considered here with numerical examples and results discussed. The key conclusions are as follows:The inclusion of the first time interval where no remanufacturing/repair exists, results in preventing the overestimation of inventory holding costs in the repairable stock. Assuming production and remanufacturing processes to be perfect, or ignoring learning effects in these processes, might not capture the benefits that product recovery programs are supposed to bring. Although works in the literature assumed pure remanufacturing is mathematically attainable but not feasible, this study shows that the pure remanufacturing case is not valid mathematically, which proves it to be infeasible. It is favourable to compensate customers to settle for remanufactured products instead of new ones. Considering disassembly of returns in the modelling of reverse logistics is proven beneficial. Finally, mixed production and remanufacturing policies are optimal rather than pure ones; and the inclusion of price and quality to determine return and collection rates is crucial.

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Section: Financial and Marketing Levelmentioning

confidence: 99%

Inventory management in reverse logistics with imperfect production, learning, lost sales, subassemblies, and price/quality considerations

Saadany¹

2021

Preprint

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“…The primary and secondary backings can be made of polypropylene, nylon, polyurethane or jute (Miraftab and Mirzababaei, 2009). According to Helms and Hervani (2006), nylon and polypropylene are the most commonly used materials for the backings and face fibres of carpets.…”

Section: Figure 1: Typical Construction Of Carpetmentioning

confidence: 99%

Development, characterisation and Finite Element modelling of novel waste carpet composites for structural applications

Sotayo

Green

Turvey

2018

Journal of Cleaner Production

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Carpets are composite materials and, like many composite materials, waste carpet is both difficult and expensive to recycle because of the complicated, multi-stage processes involved. Consequently, in the United Kingdom, approximately 400,000 tonnes of carpet waste are sent to landfill annually. However, the landfill option is becoming uneconomic due to increasing landfill charges, the reduction in landfill sites and changes in environmental legislation. This dual economic and environmental burden has led to research interest in the processing of waste carpets into useful feedstocks for use in manufacturing. This study describes the experimental characterisation of a novel structural composite material that has been fabricated from waste carpets, and which is intended for use in low grade structural applications such as agricultural fencing. Details of the manufacturing process for the composites are described, as are the results of tensile and three-point bending tests, and the observed failure modes post-testing. In addition, Finite Element (FE) analysis was used to simulate the structural behaviour of fencing posts and rails manufactured from the carpetbased composite, and these results are compared with commercially available timber and PVC equivalent designs. Finally, structural analysis and design optimisation of the composite fencing was undertaken and this is used to demonstrate that from a mechanical property standpoint, the novel waste carpet structural composite may offer potential as an alternative to the timber and PVC materials typically used in such applications. Therefore, this study has demonstrated a practical approach for recycling carpet waste, which could lead to a substantial reduction in the volume of carpet waste discarded to landfill and subsequently yield both economic and environmental benefits.

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“…An example is given by the textile supply chain for wool. Very interesting chapter about carpet recycling can be found in Helms and Hervani (2006), where authors explore the issues of reverse logistics for recycling within the carpet industry, including an economic analysis of the success of carpet recycling. Paty et.…”

Section: Modeling Framework For the Textiles Waste Recycling Effects mentioning

confidence: 99%

Environmental Sustainability through Clothing Recycling

Cuc

Vidović

2014

OSCM: An Int. Journal

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This paper examines the process of achieving environmental sustainability through recycling of textile wastes. The recycling of textile waste can serve as a mean of providing solutions to many financial and environmental problems such as high cost of waste disposal and diminution of natural resources. The benefits and problems of this exercise are also highlighted. There are benefits to all three aspects that define sustainability: economical, social and environmental but there are also negative aspects too. The conclusion drawn is that the recycling of waste is of huge benefits especially in solving the numerous environmental problems and boosting the nation's economy. To quantify potential ecological benefits and economical effects of textiles waste recycling, the paper proposes modeling framework which makes trade off between costs of reverse network for textiles waste establishing and operating, and its effects on the virgin materials consumption, land use reduction, employment increase, and resold wearable textiles earnings.

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Reverse Logistics for Recycling: Challenges Facing the Carpet Industry

Cited by 4 publications

References 8 publications

Inventory management in reverse logistics with imperfect production, learning, lost sales, subassemblies, and price/quality considerations

Inventory management in reverse logistics with imperfect production, learning, lost sales, subassemblies, and price/quality considerations

Development, characterisation and Finite Element modelling of novel waste carpet composites for structural applications

Environmental Sustainability through Clothing Recycling

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