Media Recovery and Value-Added Fertilizer Production from Biogas Plant Wastes

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“Media Recovery from Biogas Facility Wastes”, under the direction of METU Environmental Engineering Department (Assist. Prof. Dr. Yasemin Dilşad Yılmazel), where Cranfield University (Dr. Imma Bortone) and GTE are the project partners and SÜTAŞ is the beneficiary. and Fertilizer Production with High Value Added project was supported by the Katip Çelebi-Newton Fund under the joint program of the Royal Academy of Engineering (United Kingdom) and TUBITAK.

The main purpose of the project is to transform wastewater, which causes significant environmental problems when not treated sufficiently, into valuable products. Within the scope of the project, which will last for 2 years, the use of nitrogen (N) and phosphorus (P) compounds, which can cause various operational problems in biogas plants and are found extensively in wastewater, for the production of “Struvite”, a valuable fertilizer, will be investigated.

Investigation of the Conditions of Use of Iron Oxide Wastes in Sütas Biogas Facilities

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GTE carried out the Turkey Material Marketplace (TMM) R&D project supported by the EBRD with Sutas A.Ş. In the project, instead of FeCl3, which is used as H2S scavenger in the biogas facilities of SUTAS A.Ş., the use of iron oxide wastes from the metalworking industry was evaluated. In this context, analyzes were carried out on the waste samples taken from Beycelik Gestamp A.S. and the feasibility of the application, which was tested at Sutas biogas facility, was studied by GTE.

According to the results obtained in the developed R&D project, it has been seen that the waste going to the landfills in the current situation has the potential to be evaluated. With the realization of the project, a total of 324 tons of iron oxide waste will be used annually. The proposed industrial symbiosis implementation will yield a net annual savings of €78,450 with a payback period of 3.4 years. Considering the rapidly growing biogas market, although there are 85 biogas plants operating in Turkey, the demand for remedial chemicals in biogas is expected to increase further soon.

The other project we realized with SUTAS:

Use of Metal Corrosion Waste in the Production of High Value Coagulants

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Turkey Material Marketplace (TMM) R&D project supported by EBRD SAUERESSIG Prepress Preparation Systems San. Trade Inc. carried out together with the overall aim of the study was to investigate the regeneration feasibility of rotogravure cylinder production waste (e.g., FeCl3) to develop high performance coagulant that can be used commercially in various industries.

This R&D project will guide the applicable technological options for the purification/regeneration of ferric chloride (FeCl3) wastes, and it is anticipated that the results of the study will help direct the ferrous chloride waste to more useful and valuable industrial applications, rather than sending it to waste disposal sites. Within the scope of the project, technical, economic, legal, and environmental evaluations of potential waste exchange were made.

Another project we have done with the EBRD: