Next Article in Journal
Expression of RCAS1 Correlates with Urothelial Bladder Cancer Malignancy
Next Article in Special Issue
Cultivation of Chlorella vulgaris and Arthrospira platensis with Recovered Phosphorus from Wastewater by Means of Zeolite Sorption
Previous Article in Journal
The Role of hOGG1 C1245G Polymorphism in the Susceptibility to Lupus Nephritis and Modulation of the Plasma 8-OHdG in Patients with Systemic Lupus Erythematosus
Previous Article in Special Issue
Chemical Modeling of Acid-Base Properties of Soluble Biopolymers Derived from Municipal Waste Treatment Materials
Article Menu
Issue 2 (February) cover image

Export Article

Open AccessArticle
Int. J. Mol. Sci. 2015, 16(2), 3769-3782; doi:10.3390/ijms16023769

Thermochemical Pretreatments of Organic Fraction of Municipal Solid Waste from a Mechanical-Biological Treatment Plant

1
Department of Chemical Engineering and Food Technology, Faculty of Science, University of Cádiz, Puerto Real 11510, Cádiz, Spain
2
Department of Environmental Technologies, CASEM building, University of Cádiz, Puerto Real 11510, Cádiz, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: James H. Clark
Received: 27 November 2014 / Accepted: 28 January 2015 / Published: 9 February 2015
(This article belongs to the Special Issue Green Chemistry and the Biorefinery)
View Full-Text   |   Download PDF [1092 KB, uploaded 11 February 2015]   |  

Abstract

The organic fraction of municipal solid waste (OFMSW) usually contains high lignocellulosic and fatty fractions. These fractions are well-known to be a hard biodegradable substrate for biological treatments and its presence involves limitations on the performance of anaerobic processes. To avoid this, thermochemical pretreatments have been applied on the OFMSW coming from a full-scale mechanical-biological treatment (MBT) plant, in order to pre-hydrolyze the waste and improve the organic matter solubilisation. To study the solubilisation yield, the increments of soluble organic matter have been measured in terms of dissolved organic carbon (DOC), soluble chemical oxygen demand (sCOD), total volatile fatty acids (TVFA) and acidogenic substrate as carbon (ASC). The process variables analyzed were temperature, pressure and NaOH dosage. The levels of work for each variable were three: 160–180–200 °C, 3.5–5.0–6.5 bar and 2–3–4 g NaOH/L. In addition, the pretreatment time was also modified among 15 and 120 min. The best conditions for organic matter solubilisation were 160 °C, 3 g NaOH/L, 6.5 bar and 30 min, with yields in terms of DOC, sCOD, TVFA and ASC of 176%, 123%, 119% and 178% respectively. Thus, predictably the application of this pretreatment in these optimum conditions could improve the H2 production during the subsequent Dark Fermentation process. View Full-Text
Keywords: anaerobic; pretreatments; solubilisation; thermochemical anaerobic; pretreatments; solubilisation; thermochemical
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 alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Alvarez-Gallego, C.J.; Fdez-Güelfo, L.A.; Romero Aguilar, M.A.; Romero García, L.I. Thermochemical Pretreatments of Organic Fraction of Municipal Solid Waste from a Mechanical-Biological Treatment Plant. Int. J. Mol. Sci. 2015, 16, 3769-3782.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Int. J. Mol. Sci. EISSN 1422-0067 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top