Next Article in Journal
Production of 1,3-Propanediol from Pure and Crude Glycerol Using Immobilized Clostridium butyricum
Previous Article in Journal
Influence of the Incorporation of Basic or Amphoteric Oxides on the Performance of Cu-Based Catalysts Supported on Sepiolite in Furfural Hydrogenation
Article Menu
Issue 4 (April) cover image

Export Article

Open AccessArticle
Catalysts 2019, 9(4), 316; https://doi.org/10.3390/catal9040316

Optimization of Hydrogen Yield from the Anaerobic Digestion of Crude Glycerol and Swine Manure

1
Laboratorio de Bioenergía, Instituto de Energías Renovables (IER-UNAM), Temixco Morelos 62580, México
2
Facultad de Ciencias Agropecuarias, Universidad Autónoma del Estado de Morelos (UAEM), Cuernavaca Morelos 62210, México
3
Instituto de Ciēncias e Tecnologia, Universidade Federal dos Vales do Jequitinhoha e Mucuri, Campus JK, Diamantina 39100-000, Brasil
4
Deapertmento de Ciēncias Básicas, Universidade Federal dos Vales do Jequitinhoha e Mucuri, Campus JK, Diamantina 39100-000, Brasil
*
Authors to whom correspondence should be addressed.
Received: 15 February 2019 / Revised: 15 March 2019 / Accepted: 19 March 2019 / Published: 31 March 2019
(This article belongs to the Special Issue New Glycerol Upgrading Processes)
  |  
PDF [1964 KB, uploaded 12 April 2019]
  |     |  

Abstract

Crude glycerol and swine manure are residues with exponential production in Mexico, nonetheless, they have the potential to generate hydrogen from the fermentation process. For this reason, this study has evaluated the optimization of hydrogen yield from crude glycerol and swine manure, using the response surface methodology. The response surface methodology helps in the compression of the mixture of crude glycerol/ swine manure, with the production of hydrogen as a result, which improves the yields of the process, reducing variability and time of development. A central composite design was employed with two factors, six axial points and four central points. The two factors evaluated were crude glycerol and swine manure concentrations, which were examined over a range of 4 to 10 g L−1 and 5 to 15 g L−1, respectively. This study demonstrated that the thermal pretreatment method is still the most suitable method to be applied, mainly in the preparation of hydrogen-producing inoculum. The maximum hydrogen yield was 142.46 mL per gram of volatile solid added. It used up 21.56% of the crude glycerol (2.75 g L−1) and 78.44% (10 g L−1) of the swine manure, maintaining a carbon/nitrogen ratio of 18.06, with a fermentation time of 21 days. The response surface methodology was employed to maximize the hydrogen production of crude glycerol/swine manure ratios by the optimization of factors with few assays and less operational cost. View Full-Text
Keywords: hydrogen; anaerobic digestion; crude glycerol; swine manure hydrogen; anaerobic digestion; crude glycerol; swine manure
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

F. A., A.-A.; Longoria, A.; A. U., J.; A. S., S.; L. A., P.; Sebastian, P.J. Optimization of Hydrogen Yield from the Anaerobic Digestion of Crude Glycerol and Swine Manure. Catalysts 2019, 9, 316.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Catalysts EISSN 2073-4344 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top