2022/5/1/ · A fed-batch operation with four factors at a three-level experimental design accounted for the anaerobic fermentation inputs, including the acidification pH,
2022/8/2/ · Though, a numbers of commercial compost or bio-fertilizers are available in the market, however it is difficult to achieve fast and steady degradation rate, and this is mainly due to the substrate variations physicochemical and environmental conditions changes (Duan et al., 2019).Moreover, mass scale production and consumption of
2022/9/2/ · 1. Introduction. Anaerobic digestion has been considered as one of the most successful technologies for the conversion of biowaste into energy [1], because of its efficient energy generation and positive reduction of greenhouse gas emissions [2].In addition, anaerobic digestion for bioenergy production using biowaste can prevent food
1973/1/1/ · FUNDAMENTALS OF FERMENTER DESIGN N. BLAKEBROUGH Department of Chemical Engineering, University of Birmingham, UK ABSTRACT The influences of environmental (macro) conditions and those on the cell level are treated from the point of view of heat- and mass-transfer in microbial systems. The effects considered
2022/3/8/ · A fermenter (bioreactor) is a closed vessel with sufficient aeration, agitation, temperature, and pH regulation arrangements and a drain or overflow vent to extract the
2023/8/3/ · Stirrer glands and bearings. The most important factor of designing a fermenter is to maintain aseptic conditions inside the vessel. It is highly challenging in the case of pilot-scale fermenters. Therefore stirrer shafts are required. These stirrer shafts play an important role to seal the openings of a bioreactor.
2023/9/15/ · Biogas is a promising and robust renewable energy that holds potential as clean energy in the context of the current climatic emergency. Biogas has the immense advantage of coupling waste management and clean energy production. In other words, it is not only a renewable energy source, but also a central tool in recycling a vast range of
production. The project aimed at design and fabrication of a biogas digester using locally sourced materials that is affordable for low income earners. Test was carried out with the fabricated 10 litres anaerobic digester for three (3) different times at 5 litres working volume, for the fermentation of different substrates labeled digester A
Anaerobic Digestion (AD) is a set of biochemical steps where microorganisms break down organic matter such as sewage sludge, manure, and food waste in the absence of oxygen (hence the word “anaerobic”), primarily producing gases such as methane and carbon dioxide, as well as the organic wet mixture or residue called digestate.
2017/1/1/ · Abstract. The anaerobic process has been widely adopted for the treatment of high-strength wastewater because of several inherent merits. This chapter provides an overview of bioreactor design and development, especially for the treatment of industrial effluents. Various considerations on the anaerobic treatment of industrial effluents are
Fermentation is another anaerobic (non-oxygen-requiring) pathway for breaking down glucose, one that's performed by many types of organisms and cells. In fermentation, the only energy extraction pathway is glycolysis, with one or two extra reactions tacked on at the end. Fermentation and cellular respiration begin the same way, with glycolysis.
The standard multi-stage anaerobic digestion system is a two-stage acid/gas (AG)-phased system, in which the acid-forming steps (hy-drolysis and volatile acid fermentation) are physically separated from the gas-forming step (methane formation) by being conducted in sepa-rate digestion tanks. The first stage, known as the primary or acid phase
Thermodynamically, a fermentation is an exergonic process with a free energy of ΔG°′ <−20 kJ/mol. ΔG° is defined for 1 M substrates and products, 10 5 Pa for gasses and at a temperature of 298 K. Under biological conditions, in dilute aqueous solutions (55.5 M H 2 O) and at pH 7.0, ΔG°′ is used.
