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Optimization of Water Washing for Recovery of Salts from Calcium-based APCr
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SYSNO ASEP 0570163 Document Type C - Proceedings Paper (int. conf.) R&D Document Type O - Ostatní Title Optimization of Water Washing for Recovery of Salts from Calcium-based APCr Author(s) Korotenko, Ekaterina (UCHP-M) ORCID, RID, SAI
Šyc, Michal (UCHP-M) RID, SAI, ORCID
Grič, L. (CZ)
Baloch, T. (CZ)Source Title Proceedings SUM2022. - Padova : CISA Publisher, 2022 - ISBN N Number of pages 6 s. Publication form Online - E Action SUM 2022 - 6th Symposium on Circular Economy and Urban Mining Event date 18.05.2022 - 20.05.2022 VEvent location Capri Country IT - Italy Event type EUR Language eng - English Country IT - Italy Keywords water washing ; optimization ; salt recovery OECD category Chemical process engineering Institutional support UCHP-M - RVO:67985858 Annotation Air pollution control residues (APCr) from municipal solid waste incineration (MSWI) are considered hazardous waste. Hazardous properties of APCr come from a high content of soluble salts. The most effective and economically feasible way for the removal of soluble content of APCr is water washing. The results of preliminary experiments of water washing show that the extract from water washing can be a source of salts (especially chlorides of Ca, K, and Na), but there is an optimization issue that needs to be solved for successful utilization of resource recovery potential. On the one hand, a higher total liquid-to-solid (L/S) ratio leads to more efficient removal of soluble compounds from APCr and significantly improves their environmental properties. On the other hand, it leads to higher consumption of water, higher production of wastewater, and less concentrated extract, which is not so suitable for further salts recovery. This paper summarizes the results of optimization of the water washing process from the point of view of salts recovery and the improvement of environmental properties of treated APCr. The aim is to optimize the water washing process for effective removal of soluble content and stabilization of APCr with simultaneous up-concentration of extract for further recovery of salts via minimization of water consumption. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2023 Electronic address https://hdl.handle.net/11104/0341541
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