Evaluation of mud filtrate clarification to improve factory performance

Rackemann, Darryn W., Bakir, Hakan, Edwards, John, Cripps, Lloyd, & Doherty, William O.S. (2015) Evaluation of mud filtrate clarification to improve factory performance. In Bruce, R.C. (Ed.) Proceedings of the 37th Annual Conference of the Australian Society of Sugar Cane Technologists, Publishing Project Management, Bundaberg, Qld.

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Abstract

Clarification performance and flocculant dosage is strongly linked to the mud solids loading in the feed entering the clarifier. The recycle of filtrate can represent an extra ~10-15% mud solids loading on the clarifier, thereby reducing its effective capacity. Filtrate recycling may cause significant increase in turbidity, complexed calcium ion formation, phosphate, proteins and polysaccharides in mixed juice that impact on evaporator scale formation and molasses exhaustion. The paper details the results obtained from laboratory, pilot scale and factory trials of filtrate clarification using both sedimentation and flotation methods. Clarified filtrate could be produced of similar quality to ESJ. Filtrate clarification was able to significantly remove insoluble solids, turbidity, phosphate, and polysaccharides content with slight reductions in minerals content of the filtrate. On the basis of improved filtrate quality, the clarified filtrate could be directed to ESJ, instead of the normal practice of directing the mud filtrate to mixed juice. The potential impacts of implementing filtrate clarification are discussed in respect to improved performance and throughput of the clarification station.

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ID Code: 93583
Item Type: Conference Paper
Refereed: Yes
Keywords: filtrate, clarifier, mud solids
ISSN: 0726-0822
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CHEMICAL ENGINEERING (090400) > Chemical Engineering Design (090403)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CHEMICAL ENGINEERING (090400) > Chemical Engineering not elsewhere classified (090499)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Research Centres > Centre for Tropical Crops and Biocommodities
Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2015 [Please consult the author]
Deposited On: 10 Mar 2016 00:29
Last Modified: 11 Mar 2016 01:55

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