Showing papers in "Waste Management in 2012"

TL;DR: The analysis indicates that gasification is a technically viable option for the solid waste conversion, including residual waste from separate collection of municipal solid waste, and can have a remarkable effect on reduction of landfill disposal option.

TL;DR: The main objective of the current study was to outline the current situation and discuss future perspectives for sludge treatment and disposal in EU countries, where sludge reuse in land and sludge incineration seem to be the main practices further adopted in EU-27 (all Member States up to 2020.

TL;DR: Overall, substrates containing lignin or bacterial cells appear to be the most amendable to pre-treatment for enhancing AD, followed by energy crops/harvesting residues and organic waste from food industry and manure.

TL;DR: In this article, the relevant literature describing innovative organizational approaches in the management of used tyres in the European Union member countries and the possible uses of waste tyres as a source of raw materials or alternative fossil fuels are presented.

TL;DR: A GIS-based multi-criteria decision analysis approach for evaluating the suitability for landfill site selection in the Polog Region, Macedonia and to facilitate a better understanding of patterns that emerge from decision alternatives involved in the decision making process is presented.

TL;DR: An environmentally compatible process based on vacuum pyrolysis, oxalate leaching and precipitation is applied to recover cobalt and lithium from spent lithium-ion batteries and the combined process is simple and adequate for the recovery of valuable metals.

TL;DR: The scenario that incorporated incineration performed better environmentally and contributed overall to a significant reduction in greenhouse gas emissions because of the displacement of power plant emissions; however, at a noticeably higher cost.

TL;DR: A literature review on landfill mining covering a meta-analysis of the main trends, objectives, topics and findings in 39 research papers published during the period 1988-2008 shows that, so far, landfill mining has primarily been seen as a way to solve traditional management issues related to landfills such as lack of landfill space and local pollution concerns.

TL;DR: This review focuses on the bio-processing of solid wastes/byproducts of metallurgical and manufacturing industries, chemical/petrochemical plants, electroplating and tanning units, besides sewage sludge and fly ash of municipal incinerators, electronic wastes (e-wastes/PCBs), used batteries, etc.

TL;DR: The current review addresses the individual issues related to chemical and biological extraction techniques and proposes a hybrid-methodology which incorporates both, along with safer chemicals and compatible microbes for better and efficient extraction of metals from the E-waste.

TL;DR: This paper presents the sources of uncertainty specifically inherent to waste-LCA studies, to select and apply several methods for uncertainty analysis and to develop a general framework for quantitative uncertainty assessment of LCA of waste management systems.

TL;DR: As the use of LCA in this area is likely to increase in coming years, it is highly relevant to establish more detailed guidelines within this field in order to increase both the general quality in assessments as well as the potentials for cross-study comparisons.

TL;DR: It is argued that development of transparent and consistent regulatory procedures represents the basis for defining the desired state of a landfill at the end of aftercare and for reducing uncertainty about the intensity and duration of after care.

TL;DR: Results proved that the food waste used in this study was deficient in trace elements, and it was shown that iron was essential for maintaining stable methane production.

TL;DR: Of all the substrates tested, wheat bran appeared to be the best suited substrate producing appreciable yields of CMCase, FPase and β-glucosidase at the levels of 310, 17 and 33 U/g dry substrate respectively.

TL;DR: How ostensibly 'excellence-based' journal rankings exhibit a systematic bias in favour of mono-disciplinary research is illustrated, which is likely to affect negatively the evaluation and associated financial resourcing of interdisciplinary research organisations, and may result in researchers becoming more compliant with disciplinary authority over time.

TL;DR: The present communication deals with the leaching of gold and silver from the printed circuit boards (PCBs) of waste mobile phones using an effective and less hazardous system, i.e., a thiourea leaching process as an alternative to the conventional and toxic cyanide leachingof gold.

TL;DR: The Bo2W philosophy can serve as a pragmatic and environmentally responsible transition before establishment of end-processing facilities in developing countries is made feasible by adjusting to local conditions related to operational scale, level of centralized operations, dismantling depth, combination with mechanical processing and optimized logistics to international end-processors.

TL;DR: This study investigated the odor compounds from different areas in a landfill site, which included the municipal solid waste (MSW)-related area, the leachate-related area and the sludge- related area, which showed that the main odorous substances emitted from landfill site were styrene, toluene, xylene, acetone, methanol, n-butanone, n -butylaldehyde and acetic acid.

TL;DR: The results show that thermal pretreatment at 175 °C/60 min significantly decreases viscosity, improves the MBW dewatering performance, as well as increases soluble chemical oxygen demand, soluble sugar, soluble protein, and especially organic compounds with molecular weights >10 kDa.

TL;DR: For this study, a simulated plastic mixture and a real waste sample from a sorting plant were pyrolyzed using a non-stirred semi-batch reactor and red mud, a byproduct of the aluminum industry, was used as a catalyst.

TL;DR: Results, based on real buildings measurements and demolition contractor activities, show that shallow, superficial, selective demolition may not result in reduced environmental impacts and core material separation in demolition operations and its recycling and/or reuse does bring environmental benefits.

TL;DR: Economic analysis showed that combined Pretreatments with 1000 kJ/kg TSS specific energy and differing thermal pretreatments can reduce operating costs by $44-66/ton dry solid when compared to conventional anaerobic digestion withoutpretreatments.

TL;DR: AwR and BABIU have a particularly low impact in the global warming potential category as a result of the immediate storage of the CO(2), and it was determined that using NaOH instead of KOH improves its environmental performance by 34%.

TL;DR: An integrating approach for landfill siting based on conflicting opinions among environmental, economical and socio-cultural expertise is addressed and a comprehensive field visit was performed to verify the selected site obtained from the proposed model.

TL;DR: Considering the limited available data in Brazil, a model for WEEE generation estimation is proposed in which different methods are used for mature and non-mature market products, and the results showed that the most important variable is the equipment lifetime.

TL;DR: The results confirm the usefulness of the theory of planned behaviour and of Schwartz's altruistic behaviour model as bases for modelling participation in waste prevention and proved that recycling and waste prevention represent different dimensions of waste management behaviour requiring particular approaches to increase individuals' engagement in future policies.

TL;DR: The main difficulty associated with the implementation of e-waste recycling processes in Brazil is the collection system, as its efficiency depends not only on the education and cooperation of the people but also on cooperation among industrial waste generators, distributors and the government.

TL;DR: A study of co-digestion of cattle manure with food waste and sewage sludge with the aim of maximising biogas yields under mesophilic and thermophilic conditions using continuously stirred-tank reactors, operating at different hydraulic residence times.

TL;DR: The development of a dynamic model for evaluating C&D waste reduction strategies under various scenarios is developed so that best management strategies could be identified before being implemented in practice.