Evaluation of the Thermal and Kinetic Behavior of the SS Obtained from the Combined Treatment of Liquid Leachate with Domestic Sewage in UASB Reactor

Abstract:

The present study reports the results obtained from Sewage Sludge SS for the obtainment of bio-oil through the pyrolysis process. The research aimed to evaluate the thermal and kinetic behavior of the bio-solid. In this work studies were made on physicochemical, elemental analysis (CHNO). Thermogravimetry (TG) with heating rate of 10o C min^-1 over two atmospheres (synthetic air and N₂), Thermodynamics (ΔH, ΔS e ΔG), kinetic and spectroscopic. The thermalgravimetric study stated a thermal stability at 30°C. The kinetic calculations were made aiming to observe parameters such as: Activation energy (Ae), frequency factor (s^-1), standard deviation (sd) and linear coefficient (r), which were calculated by Thermogravimetry by the methods of Coats-Redfern (CR); Madhusudanan (MD); Van Krevelen (VK); Horowitz-Metzger (HM). In the spectrometry in the infrared (IR) region it was observed bands referring to the presence of water, organic material and silicon oxides in the SS samples analyzed.

• Periodical: Materials Science Forum (Volumes 775-776)
• Pages: 162-167
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.775-776.162
• Online since: January 2014
• Authors: Francisco Ferreira Dantas Filho, Crislene Rodrigues da Silva Morais, G.M. Dantas, Vilany Santana Pereira, M.A.F. Souza, I.S. Lima
• Keywords: Kinetic Study of the SS, SS, UASB Reactor

References

[1] F.F. Dantas Filho: Tratamento biológico conjugado de lixiviado e esgoto doméstico em reator UASB. Mestrado (Dissertação). Campina Grande, 2003. Universidade Federal de Campina Grande (UFCG). (PB).

DOI: 10.24873/j.rpemd.2021.10.846

[2] A.M.G. Oliveira, M. Aquino and M. Castro Neto. Compostagem caseira de lixo orgânico doméstico. (Embrapa Mandioca e Fruticultura Cruz das Almas, 2005).

[3] USEPA – United States Environmental Protection Agency. A guide to the biosolids risk assessments for the EPA Part 503 rule, 1995. Washington: Office of Wastewater Management, EPA/832-B-93-005, 1995. Mimeografado.

[4] J. Werther Ogada: T. Prog. Energ. Combust. Sci. Vol. 25 (1999), p.55.

[5] C.G. Mothé, A. D. Azevedo. Análise térmica de materiais. São Paulo: Editora, (2002).

[6] A.G. Souza, J.C.O. Santos, M.M. Conceição, M.C.D. Silva and S.A. Prasad: Brazilian Journal of Chemical Engineering Vol. 21 (2) (2004), p.265.

[7] A. Alpha: WPFC – Standard Methods for the Examination of Water and Wastwater. (18 ed. Washington, 1992).

[8] C.G. Mothé and A. Azevedo. Análise térmica de materiais. (Editora São Paulo, 2010).

[9] A.W. Coats and P. Redfern: Nature (1964).

[10] M.A. Gabal. Thermochim. Acta Vol. 402 (2003), p.199.

[11] A.G. Souza, J.C. O Santos, M.M. Conceição, M.C.D. Silva and S. A Prasad: Brazilian Journal of Chemical Engineering Vol. 21 (2) (2004), p.265.

[12] W.S.S. Lopes: Síntese, caracterização e cinética de decomposição térmica de complexos de lantanídeos. Doutorado (Tese). João Pessoa, 2005. Universidade Federal da Paraíba (UFPB). (PB).

DOI: 10.46420/9786599120824

[13] M.K.M. Nair and P.K. Radhakhishnaw: Thermochimica Acta (1997), p.115.

[14] L. Shen, L. Zahang: Fuel Vol. 82 (2003), p.465.