Effect of ultrasonic post-treatment on anaerobic digestion of lignocellulosic waste

This paper evaluates the effects of ultrasonication (US) applied, individually or in combination with a mechanical treatment, to the effluent of anaerobic digestion (AD) of lignocellulosic waste, on methane (CH4) production. US of the substrate downstream of AD is a relatively novel concept aimed at...

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Veröffentlicht in:Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA. - 1991. - 39(2021), 2 vom: 02. Feb., Seite 221-232
1. Verfasser: Boni, Maria Rosaria (VerfasserIn)
Weitere Verfasser: Polettini, Alessandra, Pomi, Raffaella, Rossi, Andreina
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA
Schlagworte:Journal Article Sonication anaerobic digestion biomethane hydrolysis lignocellulosic waste post-treatment Sewage lignocellulose 11132-73-3 mehr... Lignin 9005-53-2 Methane OP0UW79H66
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520 |a This paper evaluates the effects of ultrasonication (US) applied, individually or in combination with a mechanical treatment, to the effluent of anaerobic digestion (AD) of lignocellulosic waste, on methane (CH4) production. US of the substrate downstream of AD is a relatively novel concept aimed at improving the degradation of recalcitrant components in order to enhance the overall energy efficiency of the process. US tests were carried out on real digestate samples at different energies (500-50,000 kJ/kg total solids (TS), corresponding to sonication densities of 0.08-0.45 W/ml). AD tests were performed on mixtures of sonicated (Sus) and untreated (S) substrate at two different Sus: S ratios (25:75 and 75:25 w/w), simulating post-sonicated material recycling to the biological process. The US effect was estimated through the solubilization degree of organic matter, as well as the CH4 production yield and kinetics, which were all found to be enhanced by the treatment. At Sus: S = 75:25 and Es ≥ 20,000 kJ/kg TS (0.25 W/ml), CH4 production improved by 20% and the values of the kinetic parameters increased by 64-82% 
650 4 |a Journal Article 
650 4 |a Sonication 
650 4 |a anaerobic digestion 
650 4 |a biomethane 
650 4 |a hydrolysis 
650 4 |a lignocellulosic waste 
650 4 |a post-treatment 
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650 7 |a lignocellulose  |2 NLM 
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700 1 |a Polettini, Alessandra  |e verfasserin  |4 aut 
700 1 |a Pomi, Raffaella  |e verfasserin  |4 aut 
700 1 |a Rossi, Andreina  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA  |d 1991  |g 39(2021), 2 vom: 02. Feb., Seite 221-232  |w (DE-627)NLM098164791  |x 1096-3669  |7 nnas 
773 1 8 |g volume:39  |g year:2021  |g number:2  |g day:02  |g month:02  |g pages:221-232 
856 4 0 |u http://dx.doi.org/10.1177/0734242X20931940  |3 Volltext 
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