Integrated Waste Management System including Waste-to- Biofuels in Western Canada
© Wasteconsult international (5/2015)
The City of Edmonton provides integrated and sustainable waste management Services for residents and for the commercial sector. These services are both economical and mindful of the environment. Up to 60 per cent of residential waste is currently diverted from landfills at the Edmonton Waste Management Centre. This is mainly achieved through recycling and composting processes. Edmonton’s goal is to further raise that diversion rate to 90 per cent. Two projects play a key role in achieving this goal: a High Solids Anaerobic Digestion Facility and the first of its kind Waste to Biofuel and Chemicals Facility. These two projects will be described in more detail in this paper.

Landfill mining option: MBT role and landfill potential danger
© Wasteconsult international (5/2015)
The use of landfills for the disposal of municipal solid waste (MSW) has many technical and regulatory limits. An interesting solution is to recover the bales that have been previously stored in a landfill. After specific mechanical biological treatments (MBT), the contents of the bales can be used to produce a solid recovered fuel (SRF) that can be used for energy purposes. The possibility of producing SRF fuels from a landfill in northern Italy has been studied and is presented in this paper. The MSW extracted from the landfill, the bio-dried material produced by the waste hypothetically treated in a plant for bio-drying, and the SRF obtained after the extraction of inert materials, metals and glass from the bio-dried material have been characterized. Assessed the waste nature, the potential environmental impact of dioxin release from a possible landfill fire has been analysed, applying the Austal2000 model system.

Case study of an MBT producing SRF for cement kiln cocombustion, coupled with a bioreactor landfill for process residues
© Wasteconsult international (5/2015)
The research focuses on the performances of a traditional single stream MBT for SRF production suitable for co-combustion in a cement kiln. Bio-drying of the residual waste is followed by mechanical refining in order to fulfil the quality requirements by the cement kilns. The residues arising from the mechanical refining section are landfilled in a nearby bioreactor-landfill, where landfill gas is collected for electric energy recovery. A detailed mass balance of the system is presented, followed by a Life Cycle Assessment.

Waste2Go – Innovative MSW-Recycling for Production of Chemical Substances
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
About 180 million tons of residual waste is generated each year through households in the European Member States (EU28), which means every citizen produces more than one kilogram per day. Along with the industry the residual waste adds up to circa 2.5 billion tons. Large proportions of municipal solid waste (MSW) are still not recycled in an adequate manner because of the heterogeneity of the unsorted waste.

Landfill Mining – Case Study: Resource Potential of a Styrian Sanitary Landfill Site
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
During the last years, noticeable changes in the availability of mineral raw materials (e.g. ores, coal) were observed due to an enormous raw material demand of developing countries (e.g. China). Subsequently, a sensible scarcity of raw materials, highly competitive markets and a significant aggravated accessibility to mineral resources have been noticed.

RoadMap - Mapping in Case of Landfill Mining
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
Raw materials such as steel and energy are becoming scarcer due to the steady growth of the world population and the resulting consumption change. Hence, it is to be expected that the Prices of primary and secondary raw materials will rise in future even more than present.

Relevant Emissions During Landfill Mining Processes
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
Because of landfill mining activities emissions will occur. They can cause considerable effects to the environment and the vicinity. The most important emission may be the odour, but also dust and noise can be relevant to the neighborhood.

Biological Stabilization of the Teuftal Landfill in Switzerland
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
The Teuftal landfill, located in the canton Bern, is considered the largest sanitary landfi ll in Switzerland. Since 40 years both, municipal solid waste (MSW), construction and demolition waste, bottom ashes, flue gas cleaning residues as well as industrial waste are disposed of in different landfill sections. Untreated MSW of relatively high organic content has been landfilled in particular between 1973 and 2000 on an area of approximately 12 hectare, subdivided into 3 sectors.

An Extensive Environmental Protection Program During the Bonfol Landfill Remediation
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
The industrial waste landfill at Bonfol in the Canton of Jura, Switzerland, is a heritage of our past. The chemical industry of Basle, amongst others, dumped its production waste in a former clay pit during 15 years before the landfi ll was closed in 1976 with a clay cap. Today, the organizational and technical challenge consists in excavating nearly 175,000 tons of hazardous waste material under high safety and environmental protection measures.

MBT-Landfill as Carbon Sink – Expected Carbon Content after Aeration
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
Target of MBT (mechanical biological treatment of wastes) is to mineralise and to stabilise waste organic matter. This leads to a reduction of emissions after landfi lling the pretreated wastes. It is well known, that MBT-landfills can be seen as a carbon sink, but there is a deficit in knowledge about the time frame respectively which share of organic carbon will remain in the landfill over long period.

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