Development of value-added products from sugarcane boiler ash: final report 2011/903
MetadataShow full item record
Bagasse fly ash from co-generation plants is often recycled into the sugarcane fields. However, bagasse fly ash contains quartz (naturally accumulated by the cane) that may be re-suspended into respirable-sized particulate by wind erosion and cultivation, where it can cause silicosis. Therefore, the transformation of the bagasse fly ash waste stream into value-added products such as zeolites and or concretes has been investigated. Factorial Design Analysis (neural network development) has been utilised to define the optimal conditions for zeolite manufacture and addition rates to concretes. Zeolite development shows that the extremely versatile zeolite-X can be manufactured at temperatures that allow the utilisation of waste steam from the sugar mill, under alkaline hydrothermal conditions. The zeolite produced has a very high cation exchange capacity, making it desirable for water treatment, soil addition, and other industrial uses. Moreover, the zeolites developed are self supported providing very high surface areas on relatively large particles, which facilitate the treatments of waste waters by increasing flow rates. Adsorption kinetics of Cu and Zn to zeolite indicates that these are rapid second order kinetics, which coupled with the high exchange capacity, increases the usefulness of the product in water treatment systems. Concretes developed showed improved strengths, and chemical resistance, particularly to chemicals (sulphate and chloride) and acids. Acid resistance in concrete improves service life of the concrete, particularly to organic acids found in silage and spilled cane juice. Hence the concretes developed have immediate application with sugar mills, where cane-juice often leads to the rapid exposure of concrete aggregate and concrete deterioration.
Please use this to cite or link to this itemhttp://hdl.handle.net/11079/16938
Contact Us | Send Feedback
- © Sugar Research Australia Limited 2015
- Copyright in this document is owned by Sugar Research Australia Limited (SRA) or by one or more other parties which have provided it to SRA, as indicated in the document. With the exception of any material protected by a trade mark, this document is licensed under a Creative Commons Attribution-NonCommercial 4.0 International licence (as described through this link). Any use of this publication, other than as authorised under this licence or copyright law, is prohibited.
- http://creativecommons.org/licenses/by-nc/4.0/legalcode - This link takes you to the relevant licence conditions, including the full legal code.
- In referencing this document, please use the citation identified in the document.
- In this disclaimer a reference to "SRA" means Sugar Research Australia Ltd and its directors, officers, employees, contractors and agents.
- This document has been prepared in good faith by the organisation or individual named in the document on the basis of information available to them at the date of publication without any independent verification. Although SRA does its best to present information that is correct and accurate, to the full extent permitted by law SRA makes no warranties, guarantees or representations about the suitability, reliability, currency or accuracy of the information in this document, for any purposes.
- The information contained in this document (including tests, inspections and recommendations) is produced for general information only. It is not intended as professional advice on any particular matter. No person should act or fail to act on the basis of any information contained in this document without first conducting independent inquiries and obtaining specific and independent professional advice as appropriate.
- To the full extent permitted by law, SRA expressly disclaims all and any liability to any persons in respect of anything done by any such person in reliance (whether in whole or in part) on any information contained in this document, including any loss, damage, cost or expense incurred by any such persons as a result of the use of, or reliance on, any information in this document.
- The views expressed in this publication are not necessarily those of SRA.
- Any copies made of this document or any part of it must incorporate this disclaimer.