Aerobic Digestion

Shammas, Nazih K.; Wang, Lawrence K.

doi:10.1007/978-1-59259-996-7_6

Cited by 8 publications

(3 citation statements)

References 29 publications

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“…This process involves the degradation of organic substances by microorganisms under aerobic conditions. The bacteria degrade complex organic substances into simple compounds, with the final production of CO 2 , H 2 O, and heat, which is produced in proportion to the microbial metabolic activity [30], and can therefore be considered a bioenergy production process.…”

Section: Aerobic Digestionmentioning

confidence: 99%

Chemical and Bioenergetic Characterization of Biofuels from Plant Biomass: Perspectives for Southern Europe

2020

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The global demand for and, therefore, the production of primary energy is continuously increasing. Consequently, the need to intervene with appropriate measures has arisen in order to achieve sustainable economic, social, and environmental objectives. The reduction of fuel and electricity consumption, the containment of atmospheric emissions of greenhouse gases (like carbon dioxide, methane, other hydrocarbons, and nitrous oxide), and the improvement of environmental quality in urban centers can be considered to be among these objectives. The search for efficient measures for the overall improvement of the environment is directed towards the replacement of traditional fossil fuels with the production of bioenergy (also known as green energy) from different materials and biomasses obtained from specific agricultural activities and/or plant residues. These materials have physico-chemical and biological characteristics of interest regarding their use as sources of renewable energy. The purpose of this review was to provide an overview of the chemical and bioenergetic characteristics of biofuels, the main techniques and processes employed for their production, and the characteristics of the different feedstock materials, especially potential energy crops.

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Section: Aerobic Digestionmentioning

confidence: 99%

Chemical and Bioenergetic Characterization of Biofuels from Plant Biomass: Perspectives for Southern Europe

2020

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“…The results show that the aerobic treatment of POME could enhance the CH4, H2, and CO2 production by 6.3, 4.6, and 5.1 times higher than the DBD treatment, respectively. The constant supply of dissolved oxygen could maintain the stabilization of organic compounds in POME, resulting in the enhancement of organic compounds depletion to produce CH4, H2, and CO2 [23]. Desmiarti et al [15] demonstrate that increasing input voltage from 15 to 25 kV could enhance the production of CH4, H2, and CO2 by applying the DBD treatment.…”

Section: Resultsmentioning

confidence: 99%

Biogas Production from Palm Oil Mill Effluent Using Dielectric Barrier Discharge Integrated with the Aerated Condition: Evaluation Based on Stoichiometric Simulation and Kinetic Study

Desmiarti,

Rosadi,

Hazmi

et al. 2023

KEM

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In this study, the performance of dielectric barrier discharge (DBD) integrated with the aerobic process with the input voltage of 20 and 25 kV on the production of biogas; methane (CH4), hydrogen (H2), and carbon dioxide (CO2) from palm oil mill effluent (POME) were investigated. The DBD and DBD integrated with the aerobic process (DBD + aerobic) treatment was also simulated using the theoretical stoichiometric of POME (in terms of carbohydrate) and the kinetic study using the first- and second-order kinetic model. The results showed only 0.58, 0.39, and 0.97 mol/L of CH4, H2, and CO2, respectively, generated from the simulation model, which underperformed those experimental results. This may be due to the low concentration of carbohydrates given by the simulated stoichiometric reaction. However, both simulation and experimental results showed a rapid increase in biogas concentration in the initial reaction time in the DBD + aerobic reactor with an input voltage of 25 kV. The results showed that DBD + reactor produced CH4, H2, and CO2 thirteen, twenty-three, and three times higher than DBD alone, respectively. This suggests that good performance was observed when the DBD was integrated with the aerobic process under the optimum input voltage. The study can give information on the optimum condition in a lab scale to produce CH4, H2, and CO2 from POME.

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“… 20 CST has been widely used to assess the effects of conditioning on sludge filterability and to determine the optimal dose of conditioners for dewatering processes. 21 …”

Section: Methodsmentioning

confidence: 99%