Affiliation:
1. University of Sao Paulo , Piracicaba , Sao Paulo , Brazil
Abstract
Abstract
Vinasse is the main by-product of ethanol production. In 2005, its application was regulated in the state of Sao Paulo, so if it is to be applied to the fields, its volume must meet the established concentration regulations. Straw contains one-third of sugarcane calorific value and can be used for cogeneration. For these purposes, the project objective was to assess the effects of straw on the concentration of vinasse solids through physical and chemical processes, so its concentrated form could be used as biomass for cogeneration. For that, different concentrations of straw, ferric sulphate, and ferric chloride were used. Turbidity reduction was the parameter analysed. Both reagents were effective in reducing the turbidity. The 200 ppm of ferric chloride and 0.25% straw content reduced the turbidity by 55.02% and 400 ppm of ferric sulphate and 0.25% of straw reduced it by 57.96%. The addition of straw showed no significant effect in terms of the turbidity reduction, however, both best treatments had 0.25% straw content addition in it. Straw can be used to concentrate vinasse, contributing to the efficiency of the process and increasing the energy potential of the concentrated solids.
Subject
Mechanical Engineering,Waste Management and Disposal,Agronomy and Crop Science
Reference21 articles.
1. AGUIAR, D. A. – RUDORFF, B. F. T. – SILVA, W. F. – ADAMI, M. – MELLO, M. P. 2011. Remote sensing images in support of environmental protocol: monitoring the sugarcane harvest in Sao Paulo State, Brazil. In Remote Sensing, vol. 3, no. 12, pp. 2682–2703.
2. BOŽIKOVÁ, M. – HLAVÁČ, P. 2013. Thermal conductivity and thermal diffusivity of biodiesel and bioethanol samples. In Acta Technologica Agriculturae, vol. 16, no. 4, pp. 90–94.
3. CARVALHO, J. – NOGUEIROL, R. – MENANDRO, L. – BORDONAL, R. – BORGES, C. – CANTARELLA, H. – FRANCO, H. 2017. Agronomic and environmental implications of sugarcane straw removal: a major review. In Global Change Biology – Bioenergy, vol. 9, no. 7, pp. 1181–1195.
4. FERREIRA, L. F. R. – AGUIAR, M. M. – MESSIAS, T. G. – POMPEU, G. B. – LOPEZ, A. M. Q. – SILVA, D. P. – MONTEIRO, R. T. 2011. Evaluation of sugar-cane vinasse treated with Pleurotus sajor-caju utilizing aquatic organisms as toxicological indicators. In Ecotoxicology and Environmental Safety, vol. 74, no. 1, pp. 132–137.
5. FOSTER, S. – HIRATA, R. – VIDAL, A. – SCHMIDT, G. – GARDUÑO, H. 2009. The Guarani Aquifer initiative – towards realistic groundwater management in a transboundary context. In Groundwater Management Advisory Team (GW-MATE) 2009. Washington: World Bank. Available at: https://www.un-igrac.org/sites/default/files/resources/files/GWMATE%20case%20profile%20-%20Guarani.pdf. Accessed on December 03, 2019.
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献