Showing papers in "Waste Management in 2010"

TL;DR: The present review attempts to link various compartmentalization aspects of the nanoparticles, their physical properties and toxicity in wastewater and wastewater sludge through simile drawn from other environmental streams.

TL;DR: It is concluded that utilization of RAC for low-to-middle strength structural concrete and non-aggressive exposure conditions is technically feasible and the environmental impacts are slightly larger for RAC than for NAC but the total environmental impacts depend on the natural and recycled aggregates transport distances and on transport types.

TL;DR: The effects of various operating parameters and their optimum ranges for maximum COD and color removal are reviewed with the conclusion that the Fenton and related processes are effective and competitive with other technologies for degradation of both raw and pre-treated landfill leachate.

TL;DR: It was found that the WPET concretes display similar workability characteristics, compressive strength and splitting tensile strength slightly lower that the reference concrete and a moderately higher ductility.

TL;DR: In this paper, an environmentally friendly leaching process for the recovery of cobalt and lithium from the cathode active materials of spent lithium-ion batteries was investigated, where the easily degradable organic acid DL-malic acid (C4H5O6) was used as a leaching reagent.

TL;DR: The results indicate that the optimal moisture content for co-composting of food waste and green waste is 60%, and the substrate at a C/N ratio of 19.6 can be decomposed effectively to reduce 33% of total volatile solids (TVS) in 12days.

TL;DR: An analytical hierarchy process (AHP) was combined with a geographic information system (GIS) to examine several criteria, such as geology/hydrogeology, land use, slope, height, aspect and distance from settlements, surface waters, roads, and protected areas (ecologic, scientific or historic).

TL;DR: This manuscript presents a critical synthesis of the relative state-of-the-art literature as this applies to all stakeholders involved in the design and management of waste biomass supply chains (WBSCs) and provides a taxonomy of all research efforts as these are mapped on the relevant strategic, tactical and operational levels of the hierarchy.

TL;DR: It is shown that since the late 1990s, the amount of MSW collected has been largely decoupled from economic growth and incineration has become an increasingly widespread treatment method for MSW.

TL;DR: The results of compressive and flexural tests indicated a larger reduction of mechanical properties of rubcrete when replacing coarse aggregate rather than fine aggregate, and the post-cracking behaviour of rubberized concrete was positively affected by the substitution of coarse aggregate with rubber shreds.

TL;DR: The results show large spatial and temporal variations of available crop residues within EU27, which may result in shortages in biomass supply in some years, when crop residues are available in a lower amount than the average.

TL;DR: Evaluating the suitability of the studied site as landfill for MSW in Karaj using weighted linear combination (WLC) method and spatial cluster analysis (SCA), suitable sites for allocation of landfill for a 20-year period were identified and the most preferred alternative was identified by AHP.

TL;DR: It was concluded that there is a potential for the use of shredded waste PET granules as aggregate in the production of structural lightweight concrete due to its low unit weight which results in a reduction in the death weight of a structural concrete member of a building.

TL;DR: PPW, a by-product of the potato industry features a high potential for ethanol production, and is hydrolyzed with various enzymes and/or acid, and fermented by Saccharomyces cerevisae var.

TL;DR: The main results of this study show the feasibility of the reuse of PC and PET waste aggregates materials as partial volume substitutes for natural aggregates in cementitious materials and a significant improvement of their post-peak flexural behaviour are observed.

TL;DR: A modified fuzzy TOPSIS methodology is proposed for the selection of appropriate disposal method and site for municipal solid waste (MSW) and it is found that RDF combustion is the best disposal method alternative for Istanbul.

TL;DR: Several heavy metals were found in the SBA samples, indicating the need to restrict its use as a fertilizer, and mortars produced with SBA in place of sand showed better mechanical results than the reference samples.

TL;DR: This paper is an attempt to identify, review and analyse methodologies and technical assumptions used in various parts of selected waste LCA models, and concludes that more effort should be employed to harmonise and validate non-geographic assumptions to strengthen waste L CA modelling.

TL;DR: The objective of this study was to characterize the state of the practice of food waste treatment alternatives in the US and Canada and to address implementation issues, principally project economics and feedstock purity.

TL;DR: It can be concluded that glycerol uptake is not the rate-limiting step during the process, and biogas yields can be boosted if it does not exceed a limiting 1% concentration in the feed.

TL;DR: Different alternatives for the management of municipal solid waste generated in the town of Castellón de la Plana are compared to identify the key variables in the waste management system and the scenario that offers the best environmental behaviour.

TL;DR: According to the influence of treatment plants location on the GWP indicator, it is observed that incineration and recycling of construction wastes are better than landfilling, even for long distances from the building site to the plants.

TL;DR: The results suggest that HC may be an interesting alternative or complement to IC in low density areas of population.

TL;DR: An overall review of the mechanochemistry applications in waste management and the related mechanisms is given and it is shown that the modification of fly ash and asbestos-containing wastes can be achieved by mechanochemical technology.

TL;DR: Treated industrial wastes arising from the cement, metallurgical, paper, waste disposal and energy industries were treated with accelerated carbonation, which reduced the leaching of certain metals, aiding the disposal of many as stable non-reactive wastes.

TL;DR: The dynamic system developed in this study incorporates the complexity of the waste generation and management process to some extent which is achieved through a combination of simpler sub-processes that are linked together to form a whole.

TL;DR: Increasing the use of methane gas to recover electricity is highly recommended to reduce the adverse impact of landfills on the environment.

TL;DR: Olivine, a neo-silicate of Fe and Mg with an olive-green colour, has proven to be a good candidate to act as a bed catalyst for tar removal during gasification of polyolefin plastic wastes, yielding a syngas of sufficient quality for energy applications after an adequate downstream cleaning.

TL;DR: With addition of both grades of the coupling agents, tensile, flexural and impact properties of the composites significantly improved, as compared with untreated samples, and morphological study revealed that the positive effect of coupling agent on interfacial bonding.

TL;DR: The study showed that municipalities with pay-by-weight schemes collected 20% less household waste per capita than other municipalities, and the majority of waste management professionals were convinced that recycling had increased as a result of the billing system.