anaerobic digesters
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2022 ◽  
Vol 301 ◽  
pp. 113891
Andrea Visca ◽  
Jasmin Rauseo ◽  
Francesca Spataro ◽  
Luisa Patrolecco ◽  
Paola Grenni ◽  

2021 ◽  
Vol 48 ◽  
pp. 101552
Natalia de Souza Ribeiro ◽  
Regina Mambeli Barros ◽  
Ivan Felipe Silva dos Santos ◽  
Geraldo Lúcio Tiago Filho ◽  
Samuel Placidio Galdino da Silva

Fuel ◽  
2021 ◽  
Vol 306 ◽  
pp. 121696
M. Andreides ◽  
L. Pokorná-Krayzelová ◽  
J. Bartáčková ◽  
J. Bartáček

2021 ◽  
pp. 126612
Francesc Puig-Castellví ◽  
Cédric Midoux ◽  
Angéline Guenne ◽  
Delphine Conteau ◽  
Oscar Franchi ◽  

2021 ◽  
Vol 3 ◽  
Eudald Casals ◽  
Raquel Barrena ◽  
Edgar Gonzalez ◽  
Xavier Font ◽  
Antoni Sánchez ◽  

The addition of magnetic nanoparticles to batch anaerobic digestion was first reported in 2014. Afterwards, the number of works dealing with this subject has been increasing year by year. The discovery of the enhancement of anaerobic digestion by adding iron-based nanoparticles has created a multidisciplinary emerging research field. As a consequence, in the last years, great efforts have been made to understand the enhancement mechanisms by which magnetic nanoparticles (NPs) addition enhances the anaerobic digestion process of numerous organic wastes. Some hypotheses point to the dissolution of iron as essential iron for anaerobic digestion development, and the state of oxidation of iron NPs that can reduce organic matter to methane. The evolution and trends of this novel topic are discussed in this manuscript. Perspectives on the needed works on this topic are also presented.

Simon Mills ◽  
Anna Christine Trego ◽  
Piet N. L. Lens ◽  
Umer Zeeshan Ijaz ◽  
Gavin Collins

Complex microbial communities in engineered environments can aggregate to form surface-attached biofilms. Others form suspended biofilms, such as methanogenic granules.

2021 ◽  
Vol 2117 (1) ◽  
pp. 012034
A Sato ◽  
A Widjaja ◽  

Abstract This study presents the results of hydrothermal pretreatment of rice straw on its ability to improve the biogas production process in anaerobic digesters. Hydrothermal treatment on rice straw biomass was carried out with the addition of 0%, 3% and 5% NaOH (w/w rice straw) for one hour at a temperature of 140 °C. This study showed that hydrothermal and alkaline hydrothermal pretreatments were able to increase organic degradation of rice straw as indicated by an increase in the dissolution of lignin and hemicellulose from rice straw. Temperature and NaOH worked synergistically to dissolve lignocellulose in the hydrothermal pretreatment process. In the semicontinuous digester fed with pretreated rice straw, NaOH content in the pretreatment stage was found to give significant effect in enhancing biogas production. Average daily biogas production by the untreated rice straw, hydrothermal pretreated without NaOH addition, hydrothermally treated rice straw with 3% NaOH and 5% NaOH was 23.9, 57.1, 95.8 and 108.8 L/kg rice straw, respectively.

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