Influence of pH and the C/N ratio on the biogas production of wastewater

Authors

DOI:

https://doi.org/10.17533/udea.redin.20190627

Keywords:

Sanitation, Biotechnology, Organic matter, Nutrients

Abstract


Wastewater from institutions are considered with low strength and they may have a low C/N ratio and pH values higher than 7.0 units. In developing countries, anaerobic treatment for low strength wastewater is widely applied. However, COD removals and biogas production can be low due to inhibitions in the process. To improve the effluent quality, aerobic posttreatment has been used. The aim of this study was accessing the influence of pH and C/N ratio on methane yield of institutional wastewater, taking into account the aerobic sludge recirculation towards the anaerobic reactor. A factorial design 32 was used, evaluating different pH values: 6.9±0.1, 7.5±0.05 and 9.0±0.5; and C/N ratio: 4.9±0.2, 8.2±0.18 and 14.2±0.17. Biochemical methane (BMP) tests were performed using as inoculum a sludge with the hydrolytic, acidogenic and specific methanogenic activity of 2.79 gCOD/gVSS-d, 2.80 gCOD/gVSS-d and 0.14 gCODCH4/gVSS-d, respectively. Results indicating that with high C/N ratio, the methane yield increased. The maximum BMP was 318 L CH4/kgVSS with pH 7.5 and C/N ratio of 8.2±0.18; however, with the C/N ratio of 14.2±017 a major COD removal and methane production rate were observed.

|Abstract
= 440 veces | PDF
= 417 veces|

Downloads

Download data is not yet available.

Author Biographies

Alexandra Cerón-Vivas, Pontifical Xavierian University

Research Group in Sanitary and Environmental Engineering (GINSA), Faculty of Environmental Engineering.

Karen Tatiana Cáceres Cáceres, Pontifical Xavierian University

Research Group in Sanitary and Environmental Engineering (GINSA), Faculty of Environmental Engineering.

Alejandro Rincón Pérez, Pontifical Xavierian University

Research Group in Sanitary and Environmental Engineering (GINSA), Faculty of Environmental Engineering.

Álvaro Andrés Cajigas Cerón, Pontifical Xavierian University

Research Group in Sanitary and Environmental engineering (GINSA), Faculty of Environmental Engineering.

References

C. D. Lemos. (2007) Anaerobic reactors. IWA Publishing. [Online]. Available: https://www.iwapublishing.com/sites/default/files/ebooks/9781780402116.pdf

M. V. Sperling, V. Freire, and C. D. Lemos, “Performance evaluation of a uasb–activated sludge system treating municipal wastewater,” Water science and technology:a journal of the International Association on Water Pollution Researchater Science and Technology, vol. 43, no. 11, pp. 323–328, 2001.

E. L. Motta, E. Silva, A. Bustillos, H. Padrón, and J. Luque. (2007, april) Combined anaerobic/aerobic secondary municipal wastewater treatment: Pilot-plant demonstration of the uasb/aerobic solids contact system. [Online]. Available: https://ascelibrary.org/doi/10.1061/%28ASCE%290733-9372%282007%29133%3A4%28397%29)

E. Kwietniewska and J. Tys. (2014, June) Process characteristics, inhibition factors and methane yields of anaerobic digestion process, with particular focus on microalgal biomass fermentation. [Online]. Available: https://doi.org/10.1016/j.rser.2014.03.041

R. Borja, E. Sánchez, and P. Weiland. (1996, June) Influence of ammonia concentration on thermophilic anaerobic digestion of cattle manure in upflow anaerobic sludge blanket (UASB) reactors. [Online]. Available: https://doi.org/10.1016/0032-9592(95)00099-2

R. Rajagopal, D. Massé, and G. Singh. (2013, September) A critical review on inhibition of anaerobic digestion process by excess ammonia. [Online]. Available: https://doi.org/10.1016/j.biortech.2013.06.030

A. Khalid, M. Arshad, M. Anjum, T. Mahmood, and L. Dawson. (2011, August) The anaerobic digestion of solid organic waste. [Online]. Available: https://doi.org/10.1016/j.wasman.2011.03.021

E. Rice, R. Baird, A. Eaton, and L. Clesceri, Standard Methods for the Examination of Water and Wastewater, 22nd ed. Washington, DC: American Public Health Association, American Water Works Association, Water Environment Federation, 2012.

L. Stein, “Parámetros operativos del manto de lodos anaeróbicos de flujo ascendente,” in Arranque y operacion de sistemas de flujo ascendente con manto de lodo (UASB):manual del curso, Universidad del Valle, Corporacion Autónoma Regional del Cauca, Wageningen University, Ed. Cali, Col.: Universidad del Valle, 1987, pp. 21–56.

G. Miller. (1959, March) Use of dinitrosalicylic acid reagent for determination of reducing sugar. [Online]. Available: https://www.doi.org/10.1021/ac60147a030

M. Dubois, K. Pilles, J. Hamilton, and F. Smith. (1956, March 1) Colorimetric method for determination of sugar and related substances. [Online]. Available: https://doi.org/10.1021/ac60111a017

P. Poirrier, “Hidrólisis y acidificación psicrófila de moléculas complejas en sistemas anaerobios,” Ph. D. dissertation, Universidad de Santiago de Compostela, Santiago de Compostela, España, 2005.

Y. Cho, J. Young, J. Jordan, and H. Moon. (2005) Factors affecting measurement of specific methanogenic activity. [Online]. Available: http://www.techweb.com/se/index.html

M. Zwietering, I. Jongenburger, F. Rombouts, and K. V. Riet, “Modeling of the bacterial growth curve,” Applied and environmental microbiology, vol. 5, no. 6, pp. 1875–1881, Jun. 1990.

J. Lay, Y. Li, and T. Noike, “Effect of moisture content and chemical nature on methane fermentation characteristics of municipal solid wastes,” Journal of Environmental Engineering, vol. 552, no. VII-1, pp. 101–108, Nov. 1996.

M. Sperling, Ed., Wastewater Characteristics, Treatment and Disposal, ser. Biological Wastewater Treatment Series. London,UK: IWA Publishing, 2007.

D. Nabarlatz, L. Arenas, D. Herrera, and D. Niño. (2013, June) Biogas production by anaerobic digestion of wastewater from palm oil mill industry. [Online]. Available: https://www.doi.org/10.29047/01225383.58

A. Pascual, B. Ruiz, P. Gomez, X. Flotats, and B. Fernández, “Situación y potencial de generación de biogás. estudio técnico per 2011-2020,” Instituto para la Diversificación y Ahorro de la Energía( IDAE), Madrid, Esp., Tech. Rep., 2011.

L. Regueiro and et al. (2012, December 20) Relationship between microbial activity and microbial community structure in six fullscale anaerobic digestersr. [Online]. Available: https://www.doi.org/10.1016/j.micres.2012.06.002

M. Díaz, S. Espitia, and F. Molina. (2002) Digestión anaerobia: una aproximacion a la tecnología. Universidad Nacional de Colombia. [Online]. Available: http://www.uneditorial.net/uflip/Digestion_Anaerobia_una_aproximacion_a_la_tecnologia/pubData/source/Digestion_anaerobia_unal.pdf

C. Mao, Y. Feng, X. Wang, and G. Ren. (2015, May) Review on research achievements of biogas from anaerobic digestion. [Online]. Available: https://doi.org/10.1016/j.rser.2015.02.032

Y. Li, Y. Chen, and J. Wu. (2019, April 15) Enhancement of methane production in anaerobic digestion process: A review. [Online]. Available: https://doi.org/10.1016/j.apenergy.2019.01.243

R. Romano and R. Zhang. (2008, February) Co-digestion of onion juice and wastewater sludge using an anaerobic mixed biofilm reactor. [Online]. Available: https://doi.org/10.1016/j.biortech.2006.12.043

Q. Wang, L. Peng, and H. Su. (2013, July) The effect of a buffer function on the semi-continuous anaerobic digestion. [Online]. Available: https://doi.org/10.1016/j.biortech.2013.04.006

P. Sensai, A. Thangamani, and C. Visvanathan. (2014, September- Octuber) Thermophilic co-digestion feasibility of distillers grains and swine manure: effect of C/N ratio and organic loading rate during high solid anaerobic digestion (HSAD). [Online]. Available: https://doi.org/10.1080/09593330.2014.913688

X. Wang, G. Yang, Y. Feng, G. Ren, and X. Han. (2012, September) Optimizing feeding composition and carbon-nitrogen ratios for improved methane yield during anaerobic co-digestion of dairy, chicken manure and wheat straw. [Online]. Available: https://doi.org/10.1016/j.biortech.2012.06.058

I. Angelidaki and et al. (2009, February) Defining the biomethane potential (bmp) of solid organic wastes and energy crops: A proposed protocol for batch assays. [Online]. Available: https://doi.org/10.2166/wst.2009.040

H. Kang and P. Weiland. (1993, December) Ultimate anaerobic biodegradability of some agro-industrial residues. [Online]. Available: https://doi.org/10.1016/0960-8524(93)90168-B

V. Ortiz, “Puesta a punto de una metodología para la determinación de la actividad metanogénica específica (AME) de un fango anaerobio mediante el sistema OXITOP. Influencia de las principales variables experimentales,” M.S. thesis, Universidad Politécnica de Valencia, Valencia, España, 2012.

Downloads

Published

2019-06-19

How to Cite

Cerón-Vivas, A., Cáceres Cáceres, K. T., Rincón Pérez, A., & Cajigas Cerón, Álvaro A. (2019). Influence of pH and the C/N ratio on the biogas production of wastewater. Revista Facultad De Ingeniería Universidad De Antioquia, (92), 88–95. https://doi.org/10.17533/udea.redin.20190627