Enhancing kitchen waste minimization and energy generation at 20 °C: a psychrophilic anaerobic co‐digestion study
-
Published:2023-12-06
Issue:2
Volume:99
Page:522-530
-
ISSN:0268-2575
-
Container-title:Journal of Chemical Technology & Biotechnology
-
language:en
-
Short-container-title:J of Chemical Tech & Biotech
Author:
Esparza‐Soto Mario1ORCID,
Alcaraz‐Ibarra Sergio1ORCID,
Lucero‐Chavez Mercedes1ORCID,
Jimenez‐Moleon Maria del Carmen1ORCID,
Mier‐Quiroga Miroslava de los Angeles1ORCID,
Fall Cheikh1ORCID
Affiliation:
1. Autonomous University of Mexico State Inter‐American Institute of Technology and Water Sciences Toluca Mexico
Abstract
AbstractBackgroundIn developing countries, anaerobic digestion still represents an emerging technology for solid waste management, despite the great energy potential of methane in biogas for heating purposes, especially in low‐temperature regions. This research evaluated the effect of hydraulic retention time (40–120 days) on the anaerobic co‐digestion of 35% w/w waste activated sludge and 65% w/w organic kitchen waste at a low temperature (20 °C). The anaerobic co‐digestion was conducted in five 11‐L semicontinuous anaerobic digesters. Additionally, the expected energy production from organic kitchen waste was calculated.ResultsThe specific methane yield (SMY) ranged from 0.20 to 0.27 LCH4 g‐VSadd−1, comparable to the SMY reported for meso‐ and thermophilic anaerobic digestion. Moreover, the expected energy production was 1.06 MJ day−1 of equivalent liquefied petroleum gas, which could satisfy ≤6.6% of the daily water heating requirements of an average Mexican household. The hydraulic retention time in the range of 60–120 days did not seem to significantly affect the performance of the digesters.ConclusionsThese digesters could easily be installed in low temperature regions for domestic use. The waste activated sludge substrate can be replaced with other nitrogen‐rich substances for indoor use. The data shown in this research set the basis for further investigations and domestic applications. © 2023 Society of Chemical Industry (SCI).
Funder
Consejo Mexiquense de Ciencia y Tecnología
Subject
Inorganic Chemistry,Organic Chemistry,Pollution,Waste Management and Disposal,Fuel Technology,Renewable Energy, Sustainability and the Environment,General Chemical Engineering,Biotechnology
Reference35 articles.
1. Utilización de biosólidos para la recuperación energética en México (Use of biosolids for energetic recovery in Mexico);Remis RR;Producción+Limpia,2012
2. SEMARNAT Residuos Solidos Urbanos (urban solid waste)https://www.gob.mx/semarnat/acciones-y-programas/residuos-solidos-urbanos-rsu[accesed: 28 March 2022].
3. Producción de Biogás a partir de la fracción orgánica de residuos sólidos urbanos (FORSU) [Biogas production from the organic fraction of solid municipal waste (OFSMW)];González‐Martínez S;Gaceta Instituto de Ingeniería UNAM,2019
4. Reviewing the anaerobic digestion of food waste for biogas production