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HaloSep in Amsterdam

HaloSep participated in the “Optimization Workshop (WEBOW)” on “Waste to Energy and BioMass” in Amsterdam

May 15, 2023

On May 9, HaloSep participated in the “Optimization Workshop (WEBOW)” on “Waste to Energy and BioMass” in Amsterdam, where we had the opportunity to present HaloSep, and our technology supporting circular economy.

The team from HaloSep had a great time meeting potential customers and discussing the possibilities within Sustainability and Waste to Energy.
Stay tuned for more upcoming news!

Treated fly ash from the HaloSep process now officially classified as non-hazardous

After the test periods in the EU funded LIFE HaloSep project at Vestforbrænding, the treated fly ash has undergone a rigorous classification process. All according to the EU Waste Directive classification guidelines. The final piece of the puzzle was obtained as a part of the test campaign during the summer of 2022 at the MaxIV Synchotron test facility in Lund, Sweden. The results from these tests verified the non-hazardous nature of the treated fly ash with respect to key elements in the classification process. The treated fly ash from HaloSep now has a non-hazardous waste code according to the European Waste Catalogue (EWC) system. The municipality of Glostrup in Copenhagen, Denmark approved the reclassification of the fly ash as the non-hazardous EWC code 19 02 06 “sludges from physico/chemical treatment other than those mentioned in 19 02 05”.

To the best of our knowledge this milestone has never been reached before. The reclassification is the first step towards realizing full recycling of a waste from our society that has up until now solely been regarded as a landfill waste. The treated fly ash from the HaloSep process meets several of the general end-of-waste criteria stated by the EU required for a material to be reintroduced back into the society. The HaloSep process is commercialized by the Stena Metal AB subsidiary HaloSep AB and is available for all waste-to-energy plants that want to become fully circular.

Staffan Svensson, the CEO of HaloSep AB, comments the latest developments “The reclassification of the HaloSep treated fly ash is a significant milestone for HaloSep and the waste-to-energy industry. This opens up to new possibilities and enhanced business opportunities for our customers. We have seen a great interest from stakeholders to include the HaloSep treated fly ash as a part of their processes and products.”

Cooperation between AVR and HaloSep

Rotterdam, Thursday 23rd of June 2022 – AVR signs agreement with HaloSep AB to explore feasibility of a local recycling of flue gas treatment material.

Generic 3D-model of a commercial HaloSep Plant

AVR has decided to evaluate the possibilities to locally manage its hazardous flue gas cleaning residues through partnership with the Swedish company HaloSep AB. The HaloSep process is a patented solution that turns the hazardous waste into harmless and useful fractions.

By choosing the HaloSep’s solution, AVR in Rotterdam would become more circular by recovering material resources and reducing the plant’s environmental footprint. The HaloSep process treats the fly ash and the contaminated acid scrubber liquid in a patented process, turning the hazardous waste into three harmless and useful fractions. The three fractions are a metal fraction ready for recycling, another is purified salt brine that can be refined and re-used in the industry and the third is a non-hazardous inorganic product that can be used in construction material.

The first step in the partnership starts in June and will return in a feasibility study, conceptual design and including all documents required for the necessary environmental permit process.

HaloSep developed a very interesting chemical recycling technology for difficult waste streams and is already operational at a waste to energy plant in Copenhagen. This promising technology could perfectly fit in AVR’s strategy to maximizing energy and raw material efficiency and minimizing the CO2 footprint and negative environmental impact. This is a next step to create a clean world in which nothing is wasted”, says Michiel Timmerije, Director Energy Residues at AVR.

Staffan Svensson, President HaloSep AB points out the importance of the partnership with AVR, one of the most reputable waste-to-energy players in Europe and states “We are excited to execute this project together with AVR to the benefit of the environment”.


About HaloSep AB

HaloSep AB is a subsidiary of Stena Metall Group, a Swedish leading recycling company with focus on northern and western Europe. HaloSep AB offers a unique and sustainable solution managing flue gas residues from WtE plants supporting a circular community.


About AVR

AVR specializes in the processing of various types of residual waste: household and commercial waste, wastewater, paper pulp residue, waste wood and hazardous waste. AVR strives continuously to achieve the maximum recovery of energy, raw materials and other materials from this residual waste through effective, efficient and safe business operations. We ensure that plastics, drinks cartons, films and metals are recycled and minerals are used in (road) construction. And by incinerating the residue of the residue we supply sustainable steam, heat and electricity to our surrounding area and by so doing obviate the use of fossil fuels. In this way AVR makes an important contribution towards the achievement of the Dutch and European goals related to climate and energy.