Microbial oxidations of fatty alcohols and fatty acids

Ratledge, Colin

doi:10.1002/jctb.280550418

Cited by 20 publications

(7 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of viable microorganisms is more attractive because they hydrolyze the lipids as well as biodegrade them further to carbon dioxide and water [57,72,101]. Lipids in this case are used as substrates for microbial growth, resulting in an increase in the concentration of microorganisms in the treatment system.…”

Section: Bioaugmentation As a Methods For Enhancing Biodegradation Of mentioning

confidence: 99%

“…Since activated sludge is a mixture of different microorganisms, which can be dominated by different species, their respective domination can be dictated by the type and concentration of the substrate [24,48]. Therefore, the results reported by Hrudey and Wakelin [35,101] suggest that the differences in the overall performances of various microbial cultures could be due to differences in enzyme systems, especially lipases [2,72,83,94]. This further suggests that the use of mixed microbial cultures such as activated sludge, particularly when it has been acclimatized to lipids and fatty acids, can offer the best option for the treatment of wastewater containing these organic substrates.…”

Section: Behavior Of Lipids In Aerobic Treatment Processesmentioning

confidence: 98%

“…They are degraded by sequential removal of two-carbon atoms via the b-oxidation pathway, resulting in release of a fatty acid shorter by two carbons and acetyl-CoA, which is then subsequently oxidized to carbon dioxide by the tricarboxylic acid cycle [57,72]. Therefore, the differences in degradation rates of long-chain fatty acids [64] may be attributed to their solubilities.…”

Section: Comparison Of Biodegradability Of Different Lipidsmentioning

confidence: 99%

See 2 more Smart Citations

Behavior of lipids in biological wastewater treatment processes

Chipasa

Mędrzycka

2006

J IND MICROBIOL BIOTECHNOL

132

View full text Add to dashboard Cite

Lipids (characterized as oils, greases, fats and long-chain fatty acids) are important organic components of wastewater. Their amount, for example, in municipal wastewater is approximately 30-40% of the total chemical oxygen demand. The concern over the behavior of lipids in biological treatment systems has led to many studies, which have evaluated their removal, but still the exact behavior of lipids in these processes is not well understood. In this review, we discuss the current knowledge of how lipids/fatty acids affect both aerobic and anaerobic processes and specific methods that have been used in an attempt to enhance their removal from wastewater. Overall, the literature shows that lipids/fatty acids are readily removed by biological treatment methods, inhibitory to microbial growth as well as the cause of foaming, growth of filamentous bacteria and floc flotation.

show abstract

Section: Bioaugmentation As a Methods For Enhancing Biodegradation Of mentioning

confidence: 99%

Section: Behavior Of Lipids In Aerobic Treatment Processesmentioning

confidence: 98%

Section: Comparison Of Biodegradability Of Different Lipidsmentioning

confidence: 99%

See 1 more Smart Citation

Behavior of lipids in biological wastewater treatment processes

Chipasa

Mędrzycka

2006

J IND MICROBIOL BIOTECHNOL

132

View full text Add to dashboard Cite

show abstract

“…It consists of a transparent Plexiglas ® (Vittadini Riferimenti, Milan, Italy) cylinder with a height of 38 cm and a diameter of 20 cm, which has outlets at various heights associated with different volumes (7,8,9 and 10 L). There are two separated inlets allowing the recirculation of sludge from the top.…”

Section: Aeration Tankmentioning

confidence: 99%

Biological Treatment by Active Sludge with High Biomass Concentration at Laboratory Scale for Mixed Inflow of Sunflower Oil and Saccharose

Cisterna

2017

Environments

View full text Add to dashboard Cite

Abstract:We studied and quantified the elimination of sunflower oil from a wastewater influent using a biological treatment by activated sludge. Estimation of the biodegraded material was obtained doing a mass balance, and we conducted a follow-up of the different operational parameters and design. We delivered information about the operation of a system for treatment by activated sludge fed with an influent with sunflower oil and saccharose. The influent was previously agitated before entering the effluent sludge in a lab-scale plant. The working range for oil concentration was 100 to 850 mg/L in the influent. Biodegradation was in the range of 60% to 51%. The process works better with a high initial concentration of biomass (7500 mg/L) in order to absorb the impacts caused by the oil on the microorganisms. The lowest total suspended solids concentration was 4500 mg/L. The elimination of sunflower oil in biodegradation and flotation was on the order of 90%.

show abstract

“…During aerobic treatment grease are converting into harmless solids, CO 2 and H 2 O. Moreover, LCFA are degraded by sequential removal of two-carbon atoms via the β-oxidation pathway, resulting in release of a fatty acid shorter by two carbons and acetyl-CoA, which is then subsequently oxidized to carbon dioxide by the tricarboxylic acid cycle [13]. JSC "Biocentras" suggest a very effective and innovative lipid-rich wastewater and pipelines clogged by lipids cleaning and composting of wastes rich in grease complex technology.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Complex Technology for Grease Wastes Utilization

Aikaitė-Stanaitienė

Matikevičienė

Levišauskas

et al. 2015

ETR

View full text Add to dashboard Cite

IntroductionSustainable technologies promote the development of green techniques and products in order to live in clean and healthy environment. New effective waste recycling and recovery technologies are introduced. Our goal is to develop an effective and affordable complex-technology for recovery of fatty pollutants from meat, fish and oil processing enterprises. At the same time, it will reduce the quantity of biodegradable waste disposed in landfills. Lipids (characterized as oils, greases, fats and fatty acids) are one of the most important components of natural foods and many synthetic compounds and emulsions. Further, lipids constitute one of the major types of organic matter found in municipal wastewater [1]. The amount of lipid-rich wastewater increases every year due to urbanization and the development of factories. The incidence of grease in different businesses is quite considerable. These applies, for example, in slaughterhouses, sausage and meet product factories, restaurants, and fish processing plants, industrial undertakings in which oils and fats are processed and barrel-washing plants [2; 3]. Suspended lipids can be readily removed from wastewater by physical methods. Nevertheless, chemically and/or physically stabilized lipid/water emulsions should be managed in an appropriate manner. This is necessary because lipids that pass through physic-chemical treatment processes contribute to the levels of biological oxygen demand (BOD) and chemical oxygen demand (COD) in the effluents [4; 5; 6]. Many manufacturing, food processing and industrial facilities dispose of liquid waste into sewer lines. Liquid waste often contains grease and other organic contaminants which, over time, lead to clogs in pipes. The treatment of this problem is to clean pipes with caustic drain cleaners, mechanically rout the pipes or to replace the pipes completely. Even when grease-traps are included in a drainage system, the grease traps can form a permanent, solid grease layer over the top of the water which requires "pump-out" of the grease-trap [3; 7]. In other situations, liquid waste is disposed into septic tanks and drain-fields. High concentrations of FOG in the waste water can lead to grease build-up on rocks in the drain-field which eventually form a seal over the rocks 258

show abstract

Microbial oxidations of fatty alcohols and fatty acids

Cited by 20 publications

References 1 publication

Behavior of lipids in biological wastewater treatment processes

Behavior of lipids in biological wastewater treatment processes

Biological Treatment by Active Sludge with High Biomass Concentration at Laboratory Scale for Mixed Inflow of Sunflower Oil and Saccharose

Optimization of Complex Technology for Grease Wastes Utilization

Contact Info

Product

Resources

About