EurekaMag
+ Translate
+ Most Popular
Advantages and disadvantages of bordeaux mixture and of lime-sulphur used on apples in the growing season
Observations on the Umaria marine bed
10 years of hearing conservation in the Royal Air Force
Chocolate crumb - dairy ingredient for milk chocolate
Effect of daily gelatin ingestion on human scalp hair
Comparison of rice bran and maize bran as feeds for growing and fattening pigs
The composition of pampas-grass (Cortaderia argentea.)
The Accraian Series:
The mechanism of the Liebermann-Burchard reaction of sterols and triterpenes and their esters
Cerebrovascular Doppler ultrasound studies (cv-Doppler)
Toria: PT-303 - first national variety
Hair growth promoting activity of tridax procumbens
Productivity of Pekin x Khaki Campbell ducks
A stable cytosolic expression of VH antibody fragment directed against PVY NIa protein in transgenic potato plant confers partial protection against the virus
Solar treatment of wheat loose smut
Swimmers itch in the Lake of Garda
Bactofugation and the Bactotherm process
The effects of prefrontal lobotomy on aggressive behavior in dogs
Visual rating scales for screening whorl-stage corn for resistance to fall armyworm
Breakdown of seamounts at the trench axis, viewed from gravity anomaly
Kooken; pennsylvania's toughest cave
Recovery of new dinosaur and other fossils from the Early Cretaceous Arundel Clay facies (Potomac Group) of central Maryland, U.S.A
Zubor horny (Bison bonasus) v prirodnych podmienkach Slovensku
The extended Widal test in the diagnosis of fevers due to Salmonella infection
Hair of the american mastodon indicates an adaptation to a semi aquatic habitat

Degradation of 2,4,6-trichlorophenol (2,4,6-TCP) by co-immobilization of anaerobic and aerobic microbial communities in an upflow reactor under air-limited conditions


Degradation of 2,4,6-trichlorophenol (2,4,6-TCP) by co-immobilization of anaerobic and aerobic microbial communities in an upflow reactor under air-limited conditions



Applied Microbiology and Biotechnology 56(3-4): 524-530



ISSN/ISBN: 0175-7598

PMID: 11549032

DOI: 10.1007/s002530000577

The co-immobilization and the culture of anaerobic and aerobic communities was tested for the mineralization of 2,4,6-trichlorophenol (2,4,6-TCP). At first, the anaerobic microorganisms (aggregated into granules) were cultivated in an upflow anaerobic sludge blanket (UASB) reactor, in a continuous mode, with glucose, propionate, acetate (COD loading rate = 0.5-2.0 g COD/l per day, ratio 1:1:1) and 2,4,6-TCP (2,4,6-TCP loading rate = 25-278 micromol/l per day) as substrates. 2,4,6-TCP was degraded into 2,4-DCP and 4-CP, but it was not mineralized because of the low degradation rates of 4-CP. Furthermore, the highest loading rates of 2,4,6-TCP (>126 micromol/l per day) caused the inhibition of the strains degrading the propionate. The granules were therefore tested in association with the aerobic community. They were immobilized in kappa-carrageenan/gelatin [2% (w/w) of each polymer] gel beads and cultivated in a reactor, on their own (to test the influence of the gel), and then with the aerobic community, under anaerobic and air-limited conditions, respectively. The results showed that (1) the gel did not influence the activity of the granules, (2) the anaerobic and aerobic communities could be easily co-immobilized in gel beads and cultivated in a reactor, (3) the mineralization of 2,4,6-TCP (2,4,6-TCP loading rate = 10-506 micromol/l per day), its intermediates of degradation and the other substrates [glucose + acetate + propionate (ratio 1:1:1) = COD loading rate = 500 mg COD/l per day] could be obtained under air-limited conditions if the culture parameters were strictly controlled [airflow = 36-48 vvd (volume of air/volume of liquid in the reactor per day), pH value at around 7.5]. Finally, the gel did not retain its structure during the whole culture (263 days) in the air-limited reactor, but the anaerobic and aerobic communities retained their activities and worked together for the mineralization.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 003701962

Download citation: RISBibTeXText

Related references

K-carrageenan/gelatin gel beads for the co-immobilization of aerobic and anaerobic microbial communities degrading 2,4,6-trichlorophenol under air-limited conditions. Applied Microbiology and Biotechnology 56(3-4): 7-23, 2001

Kappa-carrageenan/gelatin gel beads for the co-immobilization of aerobic and anaerobic microbial communities degrading 2,4,6-trichlorophenol under air-limited conditions. Applied Microbiology and Biotechnology 56(3-4): 517-523, 2001

Impact of electrical stimulation modes on the degradation of refractory phenolics and the analysis of microbial communities in an anaerobic-aerobic-coupled upflow bioelectrochemical reactor. Bioresource Technology 320(Pt B): 124371, 2021

Anaerobic degradation of landfill leachate using an upflow anaerobic fixed-bed reactor with microbial sulfate reduction. Journal of Hazardous Materials 167(1-3): 1133-1140, 2009

Degradation of 2,4,6-trichlorophenol by co-immobilized anaerobic and aerobic bacterial communities. Mededelingen Faculteit Landbouwkundige en Toegepaste Biologische Wetenschappen Universiteit Gent 59(4A-B): 2155-2160, 1994

Impact of reactor configuration on treatment performance and microbial diversity in treating high-strength dyeing wastewater: Anaerobic flat-sheet ceramic membrane bioreactor versus upflow anaerobic sludge blanket reactor. Bioresource Technology 269: 269-275, 2018

Microbial degradation of hydrocarbons in soil during aerobic/anaerobic changes and under purely aerobic conditions. Applied Microbiology and Biotechnology 49(5): 631-636, 1998

Treatment of 2,4-dichlorophenol (DCP) in a sequential anaerobic (upflow anaerobic sludge blanket) aerobic (completely stirred tank) reactor system. Process Biochemistry 40(11): 3419-3428, 2005

Enhanced lipid degradation in an upflow anaerobic sludge blanket reactor by integration with an acidogenic reactor. Water Environment Research: a Research Publication of the Water Environment Federation 82(3): 267-272, 2010

Microbial communities in the functional areas of a biofilm reactor with anaerobic-aerobic process for oily wastewater treatment. Bioresource Technology 238: 7-15, 2017

Characterisation of microbial floras and functional gene levels in an anaerobic/aerobic bio-reactor for the degradation of carboxymethyl cellulose. Applied Microbiology and Biotechnology 97(7): 3195-3206, 2013

Microbial and physicochemical characteristics of compact anaerobic ammonium-oxidizing granules in an upflow anaerobic sludge blanket reactor. Applied and Environmental Microbiology 76(8): 2652-2656, 2010

Effect of easily degradable substrate on anaerobic degradation of pentachlorophenol in an upflow anaerobic sludge blanket (UASB) reactor. Journal of Hazardous Materials 119(1-3): 239-243, 2005

Anaerobic treatment performance and microbial population of thermophilic upflow anaerobic filter reactor treating awamori distillery wastewater. Journal of Bioscience and Bioengineering 104(4): 281-287, 2007

Simultaneous nitrification and denitrification in an aerobic reactor with granular sludge originating from an upflow anaerobic sludge bed reactor. Water Environment Research: a Research Publication of the Water Environment Federation 78(8): 792-796, 2006