2021/8/10/ · Anaerobic fermentation is an eco-friendly technology for waste activated sludge (WAS) treatment, during which resource recycle can be achieved. However, traditional sludge anaerobic fermentation is limited by the poor efficiency. We herein reported a novel high-efficiency technology by combining freezing with potassium ferrate
Organisms carrying out fermentation, called fermenters, produce a maximum of two ATP molecules per glucose during glycolysis. Table 8.2 compares the final electron acceptors and of ATP synthesis in aerobic respiration, anaerobic respiration, and
2023/4/14/ · The scale-up technology of anaerobic fermentation stirring equipment is worthy of attention. Computational fluid dynamics (CFD) simulations were used to study the scale-up of anaerobic fermentation mixing under different solid content conditions. The applicability of different scale-up criteria was analyzed by investigating the relative
Anaerobic fermentation is widely used in sludge stabilization and resource recovery (e.g., in the form of volatile fatty acid (VFA)). As an important component of WWTP sludge,
This paper compares Cr (VI) removal in fermented and unfermented sludges. After fermentation for 24 h, 99.9% of the Cr (VI) (50 mg/L) in anaerobic sludge was removed within 7 h, which was twice the rate in unfermented activated sludge. A series of comparative experiments demonstrated that Cr (VI) removal primarily occurred through biological
Processes that use an organic molecule to regenerate NAD + from NADH are collectively referred to as fermentation. In contrast, some living systems use an inorganic molecule
2022/2/1/ · parameters applied during fermentation t o ensure optimum performance of the fermenter and production of quality and products in optimum quantity. It is a nother approach to medium design and is
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.
2024/4/21/ · The ethanol fermentation reaction is shown in Figure 8.4.1 8.4. 1. In the first reaction, the enzyme pyruvate decarboxylase removes a carboxyl group from pyruvate, releasing CO 2 gas while producing the two-carbon molecule acetaldehyde. The second reaction, catalyzed by the enzyme alcohol dehydrogenase, transfers an electron from
The bio-reduction of hexavalent chromium (Cr(VI)) by anaerobic fermentation is considered as a promising, low-cost and environment-friendly way. However, it is unclear for the reduction mechanisms of Cr(VI) in an anaerobic hydrogen fermenter, such as reduction kinetics, related electron donors, migr
used interchangeably. In the anaerobic process the bacteria eat the substrate and digest it, releasing methane, CO 2, etc. The term “digestion” is based on this fact. The anaerobic process releases gases due to microbial action as happens in fermen-tation. Hence it is also called “anaerobic fermentation” or just “fermentation.” And
2024/1/6/ · As the by-product in the biological sewage treatment, waste-activated sludge (WAS) always suffers from the difficulty of disposal. Anaerobic fermentation to achieve valuable carbon sources is a feasible way for resource utilization of WAS, whereas the process is always restricted by its biochemical efficiency. Hence, the WAS was used
As with alcohol fermentation, the process begins with glycolysis (“A”). In the absence of oxygen, enzymes take pyruvate and reduce it to lactate, or lactic acid. This reduction is accompanied by the simultaneous oxidation of NADH to NAD +. With NAD + available, glycolysis can continue, at least for a short while.
2024/5/23/ · 1. Fermenter Vessel. A fermenter is a large cylinder closed at the top and bottom connected with various pipes and valves. The vessel is designed in such a way that it allows to work under controlled conditions. Glass and stainless steels are two types of fermenter vessels used. The glass vessel is usually used in small-scale industries.
4 天之前 · Fermentation and anaerobic respiration. Respiration refers to the reduction of oxygen by electrons from the electron transport chains coupled to the generation of a proton motive force through electron transport phosphorylation (ETP; Section 5.8). Under anaerobic conditions, some microorganisms grow using an ETP process with externally