Browsing USN Open Archive by Author "Dinamarca, Carlos"

Now showing items 1-20 of 31

    • Ammonium as a Carbon-Free Electron and Proton Source in Microbial Electrosynthesis Processes 

      Sivalingam, Vasan; Dinamarca, Carlos; Arachchige, Gamunu L. Samarakoon; Winkler, Dietmar; Bakke, Rune (Peer reviewed; Journal article, 2020)
      Biogas upgrading to biomethane with microbial electrosynthesis (MES) is receiving much attention due to increasing biomethane demands and surplus renewable energy. Research has demonstrated the feasibility of MES to increase ...

    • Anaerobic expanded granular sludge bed (EGSB) reactor for the removal of sulphide by autotrophic denitrification. 

      Dinamarca, Carlos (Journal article; Peer reviewed, 2014)
      The Removal efficiency, load and N/S molar ratio, of an EGSB reactor for autotrophic sulphide denitrification operated for 96 days, were studied. The reactor was operated at high inlet sulphide concentrations between 0.25 ...

    • Application of Machine Learning in Biogas Process 

      Gaida, Ranjan (Master thesis, 2023)
      Anaerobic digestion has become increasingly popular due to its potential to recover value-added resources from organic waste. To overcome the challenges of complex and non-linear relationships between the micro-organisms, ...

    • Bioelectrochemical Reactions at the Surface of Bioelectrodes for Biofuels Production 

      Asarimendi, Mosayeb (Master thesis, 2022)
      In most countries, the major energy source is fossil fuels. Fossil fuels are cost-effective and reliable. But it faces the issue of greenhouse gas (GHG) emissions. Therefore, new renewable energy sources must be developed. ...

    • Chemical equilibrium model to investigate scaling in moving bed biofilm reactors (MBBR) 

      Sivalingam, Vasan; Ibrahim, Osama M.; Kukankov, Sergey; Omodara, Babafemi; Janka, Eshetu; Wang, Shuai; Dinamarca, Carlos; Haugen, Hildegunn Hegna; Bakke, Rune (Peer reviewed; Journal article, 2019)
      Moving bed biofilm reactor (MBBR) is a robust, flexible and compact technology for treatment of medium to high strength wastewater. However, while treating with high concentration of ammonium, phosphorus and metal ions, ...

    • Decomposition and characterization of Aqueous Pyrolysis Liquid 

      Showaya, Adel (Master thesis, 2022)
      Pyrolysis is one of the fastest methods for depolymerizing biomass macromolecules (i.e., cellulose and hemicellulose) into smaller molecular fragments (i.e., hydroxy acetaldehyde). Pyrolysis of biomass results in a two-phase ...

    • Effect of Elevated Hydrogen Partial Pressure on Mixed Culture Homoacetogenesis 

      Sivalingam, Vasan; Haugen, Tone; Wentzel, Alexander; Dinamarca, Carlos (Peer reviewed; Journal article, 2021)
      This study aimed to systematically investigate the effect of elevated hydrogen partial pressure on mixed culture homoacetogenesis in the range of 1–25 bar. Seven batch experiments were performed at different initial headspace ...

    • Effect of Intermittent Aeration in a Hybrid Vertical Anaerobic Biofilm Reactor (HyVAB) for Reject Water Treatment 

      Sivalingam, Vasan; Dinamarca, Carlos; Wakjera, Eshetu Janka; Kukankov, Sergey; Wang, Shuai; Bakke, Rune (Peer reviewed; Journal article, 2020)
      Water from anaerobic sludge dewatering (reject water that is recycled to the inlet main process treatment) from the Knarrdalstrand municipal wastewater treatment plant in Porsgrunn, Norway, contains 2.4 g/L of total chemical ...

    • Effect of Particulate Disintegration on Biomethane Potential of Particle-Rich Substrates in Batch Anaerobic Reactor 

      Tassew, Fasil Ayelegn; Bergland, Wenche Hennie; Dinamarca, Carlos; Bakke, Rune (Peer reviewed; Journal article, 2019)
      An investigation of particle disintegration was carried out using batch anaerobic reactors and a particle-rich substrate from pig manure supernatant. Two types of samples were applied, one high in suspended particles (raw ...

    • Effects of N/S Molar Ratio on Product Formation in Psychrophilic Autotrophic Removal of Sulfide 

      Sposob, Michal; Bakke, Rune; Dinamarca, Carlos (Journal article; Peer reviewed, 2017)

    • Effects of Psychrophilic Storage on Manures as Substrate for Anaerobic Digestion 

      Bergland, Wenche Hennie; Dinamarca, Carlos; Bakke, Rune (Journal article; Peer reviewed, 2014-08-05)
      The idea that storage can enhance manure quality as substrate for anaerobic digestion (AD) to recover more methane is evaluated by studying storage time and temperature effects on manure composition. Volatile fatty acids ...

    • Electrochemical Sulphide Oxidation - An Experimental Study 

      Muhidin, Hudda Samir Abukar (Master thesis, 2021)
      Hydrogen sulphide (H2S) is a problem that occurs everywhere in the industries. This has hazardous properties like high corrosive, hazardous when inhaling and high flammability. The gas is either produced naturally or as a ...

    • Enhanced Digestate Nitrification in Sequencing Batch Reactors (SBR) 

      Gyawali, Sandeep (Master thesis, 2021)
      The liquid fraction of digestates from anaerobic digestion contains a high concentration of Ammonium, which can be transformed into liquid “organic fertilizer”. Direct application of these digestates as fertilizer would ...

    • Granular sludge bed processes in anaerobic digestion of particle-rich substrates 

      Tassew, Fasil Ayelegn; Bergland, Wenche Hennie; Dinamarca, Carlos; Kommedal, Roald; Bakke, Rune (Peer reviewed; Journal article, 2019)
      Granular sludge bed (GSB) anaerobic digestion (AD) is a well-established method for efficient wastewater treatment, limited, however, by the wastewater particle content. This review is carried out to investigate how and ...

    • High Pressure Moving Bed Biofilm Reactor for Syngas Fermentation 

      Sivalingam, Vasan; Dinamarca, Carlos (Peer reviewed; Journal article, 2021)
      Two well-studied strategies to enhance syngas fermentation are elevated headspace pressure, increasing gas-liquid (GL) mass transfer, and moving bed biofilms (MBB) to overcome kinetic growth limitation. A combination of ...

    • High rate manure slurry anaerobic digestion 

      Bergland, Wenche Hennie; Dinamarca, Carlos; Toradzadegan, Mehrdad; Nordgård, Anna Synnøve Røstad; Bakke, Ingrid; Bakke, Rune (Journal article, 2015)
      The study shows that high rate anaerobic digestion may be an efficient way to obtain sustainable energy recovery from slurries such as pig manure. High process capacity and robustness to 5% daily load increases are observed ...

    • High rate manure supernatant digestion 

      Bergland, Wenche Hennie; Dinamarca, Carlos; Toradzadegan, Mehrdad; Nordgård, Anna Synnøve Røstad; Bakke, Ingrid; Bakke, Rune (Journal article; Peer reviewed, 2015)
      The study shows that high rate anaerobic digestion may be an efficient way to obtain sustainable energy recovery from slurries such as pig manure. High process capacity and robustness to 5 % daily load increases are observed ...

    • Influences of temperature and substrate particle content on granular sludge bed anaerobic digestion 

      Tassew, Fasil Ayelegn; Bergland, Wenche Hennie; Dinamarca, Carlos; Bakke, Rune (Peer reviewed; Journal article, 2019)
      Influences of temperature (25–35 °C) and substrate particulate content (3.0–9.4 g total suspended solids (TSS)/L) on granular sludge bed anaerobic digestion (AD) were analyzed in lab-scale reactors using manure as a substrate ...

    • Integrating Syngas Fermentation into a Single-Cell Microbial Electrosynthesis (MES) Reactor 

      Sivalingam, Vasan; Ahmadi, Vafa; Babafemi, Omodara; Dinamarca, Carlos (Peer reviewed; Journal article, 2020)
      This study presents a series of experiments to test the integration of syngas fermentation into a single-cell microbial electrosynthesis (MES) process. Minimal gas–liquid mass transfer is the primary bottleneck in such ...

    • Life Cycle Assessment of Biogas Upgradation Using Microbial Electrosynthesis 

      Aryal, Ashim (Master thesis, 2022)
      This thesis evaluates a life cycle assessment (LCA) framework for biogas upgradation. A study and evaluation were conducted by comparing high-pressure water scrubbing (HPWS) for biogas upgrading and integration of the ...