Draft:FUNDABAC
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Comment: Wikipedia is not free advertising. Cut the promotion and find better sources or I will reject if the article is resubmitted. WeirdNAnnoyed (talk) 22:26, 23 October 2025 (UTC)
FUNDABAC is an automatic candle filter system designed for solid–liquid separation in process industries. It operates as a closed filtration unit that allows the automatic formation, washing, and discharge of filter cakes without manual intervention. The system has been applied in chemical, pharmaceutical, biotechnological, and environmental processes where high product purity and solvent containment are required.[1]
History
[edit]The FUNDABAC filter design was developed in the early 1980s by Swiss engineer Hans Mueller as part of work on advanced candle filter systems. It represented an improvement over conventional pressure and vacuum filters by automating cake formation and discharge in a sealed vessel. Since its introduction, the technology has been used in continuous and batch processes across chemical and metallurgical operations, including alumina and catalyst recovery plants.[2]
Principle of operation
[edit]A typical FUNDABAC unit consists of a vertical pressure vessel containing multiple porous filter elements, or "candles," each covered by a synthetic or metallic filter cloth. During operation, slurry enters the vessel and solids accumulate on the filter media, forming a cake. When the desired cake thickness is reached, the filtrate is drained and compressed gas or liquid is used to dry and discharge the cake automatically. The closed-loop design minimizes operator exposure and allows solvent recovery, making the system suitable for high-value or hazardous materials.[1][3]
Industrial applications
[edit]FUNDABAC filters are used in processes that require efficient separation of solids from liquids with high clarity of filtrate and low residual moisture in the cake. Documented industrial uses include alumina clarification, catalyst recovery, and separation of biological materials such as fungal biomass in fermentation processes.[2][4] The system is also applied in amine filtration, pigment production, and environmental wastewater treatment where automated discharge is advantageous.[5]
Research and development
[edit]Academic studies and technical reports have examined the performance of FUNDABAC and related candle filters in industrial and bioprocessing contexts.[3][4] Patents associated with the design cover aspects such as filter element geometry, back-pulse discharge mechanisms, and process control systems.[6]
References
[edit]- ^ a b "Guaranteeing Process Industries High Product Quality & Yield." Filtration & Separation, ScienceDirect (Elsevier), 2003. [1]
- ^ a b Müller, H., et al. "Effective Bayer Liquor Clarification: Retrofit or New with DrM FUNDABAC® Filter Internals." 8th International Alumina Quality Workshop, 2008. [2]
- ^ a b NTNU Open Archive. "Filtration systems for solid–liquid separation in process engineering." Norwegian University of Science and Technology, 2015. [3]
- ^ a b Roth, C. & Hempel, A. "Separation of mycelium Aspergillus niger by means of the filter FUNDABAC TSD." Biochemical Engineering Journal, ResearchGate, 2016. [4]
- ^ U.S. Department of Energy, Office of Scientific and Technical Information. "Filtration and separation processes in liquid processing applications." OSTI.gov, 2019. [5]
- ^ "DrM, Dr. Mueller AG – Patent Assignee Record." Justia Patents, 2024. [6]