An Overview of Solid Waste Management and Plastic Recycling in Qatar

Municipal solid waste management (MSWM) constitutes one of the most crucial health and environmental problems facing authorities in the Arabian Gulf. Recent literature on current solid waste management (SWM) in Qatar has been reviewed in this paper, and a focused study has been carried out to provide a review on the total amount of municipal solid waste generated, stored, collected, disposed as well as the constituents of the waste. The analysis showed that Qatar produced around 2,000,000 tons of solid municipal waste annually, corresponding to a daily generation rate per capita of about 2. 5 kg. About 60% of MSW is organic material and about 300 kg is composed daily. Landfill and composting is considered the most appropriate waste disposal techniques in Qatar. Um-Al-Afai landfill has nearly 80% of MSW. Because of the increased migration in Qatar, there is a sharp rise in the volume and also in the variety of solid waste. It is important to alleviate societal concerns over the increased rate of resource consumption and waste production; thus, policy makers have encouraged recycling and reuse strategies to reduce the demand for raw materials and to decrease the quantity of waste going to landfill. An example of the benefit of mechanical recycling of plastics compared to land filling and composting was conducted by GaBi 4 life cycle analysis tool which showed the benefits to the global warming and human toxicity. Recycling is the favored solution for plastic waste management, because it has a lower environmental impact on the defined impact categories, from Global Warming Potential (GWP) and Human Toxicity Potentials (HTP) indicators.Acknowledgments This work has been supported by QSTP, Qatar Science and Technology Park. The authors also acknowledge the support provided by Qatar University for this work.Scopu

Influence of additives on recycled polymer blends

Polymer systems based on polymer waste offer promising way to increase recycling in the society. Since fillers play a major role in determining the properties and behavior of polymer composites, recycled polymers can also be combined with fillers to enhance the stiffness and thermal stability. In this study, blends of recycled polyethylene and recycled polypropylene with mica and glass fiber were prepared by melt blending technique. The effect of the particle loading, filler type, and filler–matrix interaction on thermal degradation and thermal transition of processed systems were investigated. Thermogravimetric analysis, differential thermogravimetric analysis, and differential scanning calorimetry were used in this investigation. Comparative analysis shows that both fillers produced different effects on thermal properties of the processed systems. These results were confirmed by calculating the activation energy for thermal degradation and thermal transition using Kissinger and Flynn–Wall expressions

EIA and EMS integration : Not wasting the opportunity

Environmental tools such as environmental impact assessment (EIA) and environmental management systems (EMS) can be applied to ensure that major projects are constructed and operated using an approach that enables effective environmental protection. Previous research has shown that these tools are frequently applied in isolation at different stages of the project life cycle. The extent of EIA/EMS integration amongst nine of the biggest UK waste management companies was investigated through semi-structured interviews with environmental staff and thematic analysis of their responses. The research found that partial integration of EIA and EMS is widespread. Companies recognised a range of potential benefits to more closely integrating their processes such as system efficiencies, data availability and recognition from the regulator. However, significant barriers to further integration were identified in the form of cost, company structure and the size of the organisation. In a context where the regulation of the waste industry is increasingly aligned towards a risk-based approach, there is a new opportunity to use EIA outputs in an enhanced EMS. More generally, companies should seek to maintain continuity of personnel across the project life cycle and structure their environmental functions so that EIA and EMS staff can work more closely. This would help ensure that the greatest benefit is derived from both tools.Peer reviewe