Conference proceedings

Displaying 1 - 5 of 5 in Environmental biotechnology and bioenergy (remove filter), anaerobic (remove filter)

CEST Proceedings are published under the ISSN 2944-9820.

Anaerobic digestion of long-chain fatty acids (oleic, palmitic, stearic) with whey protein as the emulsifier

(Corresponding) Eftaxias A., Michailidis C., Diamantis V., Aivasidis A.

Topic:

Environmental biotechnology and bioenergy

Long chain fatty acids are suitable for biogas production, however, they are often responsible for process inhibition, due to their high toxicity even at low concentrations. In this study, anaerobic co-digestion of whey protein emulsified with oleic, palmitic or stearic acid were examined in...Read more

Keywords:

anaerobic digestion, biogas, emulsification, fat oil and grease, LCFA

DOI:

https://doi.org/10.30955/gnc2019.00709

Conference:

CEST2019

Paper ID:

cest2019_00709

High-rate anaerobic co-digestion of agro-industrial wastes combined with ammonia recovery and biogas purification

Eftaxias A., Georgiou D., (Corresponding) Diamantis V., Koumara A., Koskinari M., Aivasidis A.

Topic:

Environmental biotechnology and bioenergy

Screened dairy manure, pressure-sterilized animal by-products, and cheese whey were co-digested in a Plug Flow Reactor (PFR) over a period of 150 days. The mixture was characterized by TCOD = 70±8 g/L, SCOD = 26±6 g/L, NH4-N = 1.5±0.3 g/L, TSS = 20±5 g/L, VSS = 18±6 g/L, TS = 33±5 g/L, VS = 26±2 g/...Read more

Keywords:

anaerobic digestion, plug flow reactor, biomethane, dairy manure, ammonia stripping

DOI:

https://doi.org/10.30955/gnc2019.00715

Conference:

CEST2019

Paper ID:

cest2019_00715

Biogas upgrade via ex-situ technologies

Spyridonidis A., Vasiliadou I., (Corresponding) Stamatelatou K.

Topic:

Environmental biotechnology and bioenergy

The biological upgrade of biogas to biomethane (CH4 > 90%) is a popular emerging technology, since the produced CO2 is not removed but is converted to biomethane using hydrogen (H2). The initial aim of the present study is the acclimatization of a microbial population derived from a typical...Read more

Keywords:

biogas upgrade, anaerobic digestion, biomethane, hydrogenotrophic methanogenesis

DOI:

https://doi.org/10.30955/gnc2021.00386

Conference:

CEST2021

Paper ID:

cest2021_00386

The effect of HRT in the successful bioaugmentation of CSTRs working under ammonia toxicity

Tzenos C., Christou M., Kalamaras S., (Corresponding) Kotsopoulos T.

Topic:

Environmental biotechnology and bioenergy

High levels of ammonia is a common inhibitory factor in anaerobic digestion (AD) resulting in low methane production and unbalance of the process. In the present study, the adjustment of the hydraulic retention time (HRT) and the bioaugmentation process (BP) are investigated to counter the negative...Read more

Keywords:

Anaerobic digestion, Inhibition, Ammonia, Methane, Bioaugmentation

DOI:

https://doi.org/10.30955/gnc2021.00669

Conference:

CEST2021

Paper ID:

cest2021_00669

Direct upgrading of biogas produced by anaerobic digestion: preliminary results at laboratory scale

Bonaccorsi L., Fazzino F., Fotia A., Malara A., Pedullà A., (Corresponding) Calabrò P.

Topic:

Environmental biotechnology and bioenergy

The present study investigated, at laboratory scale, the possibility of achieving biogas upgrading with a single step of treatment, namely without involving any pre- or post-treatment or multiple stage recirculation. In this respect, three commercial molecular sieves (i.e., Honeywell 13X, 4A, and...Read more

Keywords:

anaerobic digestion, biogas upgrading, biomethane, CO2 adsorption, molecular sieves

DOI:

https://doi.org/10.30955/gnc2023.00448

Conference:

CEST2023

Paper ID:

cest2023_00448