Castro, I M P Azevedo, L S Souza, C L
Published in
Environmental technology
This study aimed at evaluating the microaeration as an alternative for hydrogen sulfide removal from biogas of UASB reactors treating sewage. The set-up consisted of two pilot-scale UASB reactors, including a conventional anaerobic and a modified UASB reactor, operated under microaerated conditions. Air was supplied in the digestion zone, at 1 and ...
da Silva Ramos, José Gustavo Venâncio Leon, Fernanda de Almeida Michelon, Leonardo Kozak Kreutz, Cristiane Carvalho, Karina Querne de Passig, Fernando Hermes
Published in
Environmental technology
Recent studies point out losses of 30-40% of the produced methane in the effluent of anaerobic reactors treating sewage, reducing the renewable energy potential and the environmental footprint. A novel bench-scale upflow anaerobic hybrid (UAHB) reactor combining a sludge blanket at the bottom and a filter media at the top, both with three-phase sep...
Mohrmann, Sören Otter, Verena
The cultivation of renewable raw materials on arable land is challenged by the ongoing fuel-versus-food debate resulting from increases in maize cultivation, shorter crop rotations and land competition. Accordingly, the current legal framework for biogas production in Germany focuses on limiting cultivation of traditional biogas substrates, such as...
Stempfle, Sarah Roselli, Luigi Carlucci, Domenico Leone, Alessandro de Gennaro, Bernardo Corrado Giannoccaro, Giacomo
Published in
Frontiers in Sustainable Food Systems
While the paradigm of circular economy (CE) and the processes of socio-technical transition have been broadly investigated at the theoretical level, understanding how the transition toward circular models can be implemented in practice is still limited. This contribution aims to provide in-depth and evidence-based insights on an emerging pathway fo...
Sutaryo, Sutaryo Adiwinarti, Retno Sahrudi, Dian Huda, Muhammad Misbahul Himawan, Farhan Hendri Ward, Alastair James
Anaerobic digestion of dairy cow manure (DCM) is constrained by a low methane production of animal manure. A method to overcome that is by co-digestion DCM and food industry by-product. This study investigated the process performance anaerobic co-digestion of DCM and tofu cake (TC) at different volatile solid (VS) mixing ratios. The treatments were...
l., andré
Biogas upgrading by a catalytic process has been studied in order to obtain syngas using renewable source of methane. This work evaluates the influence of metal dopant (Gd, Sm, and Zr) on the CeO2 structure for the dry reforming of methane over Ni nanoparticle embedded catalysts. The doping with Zr improved the thermal stability of the catalyst, le...
Hegdahl, Stian Hersvik Løhre, Camilla Barth, Tanja
Published in
Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA
Due to sewage sludge being an abundant biobased resource, and with the number of biogas plants utilizing sewage sludge increasing, digested sewage sludge (DSS) is a promising feedstock for producing bio-oil. This study uses DSS from a biogas plant to produce bio-oil in a hydrothermal liquefaction process adjusting time from 2 to 6 hours, temperatur...
Castro, Tayane Miranda Silva de Cammarota, Magali Christe Pacheco, Elen Beatriz Acordi Vasques
Published in
Environmental technology
The technology of anaerobic co-digestion to treat the excess biological sludge discharged from activated sludge systems in oil refineries was evaluated in bench scale experiments. Mixing food waste rich in fruits and vegetables with this sludge increased the reduction of volatile solids and biogas yield. An experimental design indicated that the be...
Currie, Felicity Twigg, Matthew S. Huddleson, Nicholas Simons, Keith E. Marchant, Roger Banat, Ibrahim M.
Published in
Frontiers in Microbiology
Propane is a major component of liquefied petroleum gas, a major energy source for off-grid communities and industry. The replacement of fossil fuel-derived propane with more sustainably derived propane is of industrial interest. One potential production route is through microbial fermentation. Here we report, for the first time, the isolation of a...
Ibarra-Esparza, Fernanda E. Verduzco Garibay, Marycarmen Lara-Topete, Gary Ossmar González-López, Martín Esteban Orozco-Nunnelly, Danielle A. Aguilar-Juárez, Oscar Senés-Guerrero, Carolina Gradilla-Hernández, Misael Sebastián
Published in
Frontiers in Environmental Science
The management of municipal solid waste (MSW) is a complex and expensive task. This is especially the case in developing countries, where waste generation rates are continuously increasing and where current MSW management strategies are focused on inadequate practices, such as landfilling and incineration, which result in numerous health and enviro...
