Development of process conditions for biodegradation of raw olive mill wastewater by Rhodotorula glutinis

Karakaya, Alper; Lâleli, Yahya; Takaç, Serpil

doi:10.1016/j.ibiod.2012.09.005

Cited by 30 publications

(19 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In our previous studies, we have also detected that R. glutinis cells survived in OMW up to 1800 mg/L TP concentration providing up to 89% phenol degradation after an adaptation period. [9,10] Similarly, Jarboui et al [11] reported that Rhodotorula mucilaginosa adapted to OMW was able to reduce phenol concentration in OMW up to 3300 mg/L. However, the increase in phenol concentration from 830 to 3300 mg/L decreased the biodegradation from 34.81% to 5.84%.…”

Section: Effect Of Initial Tp Concentrationmentioning

confidence: 98%

“…However, the adaptation period of R. glutinis cells to OMW appeared to be high at high phenol concentrations as stated in our previous studies. [9,10] Degradation degrees of phenols were between 81% and 89% after 120 h of biodegradations. In our previous studies, we have also detected that R. glutinis cells survived in OMW up to 1800 mg/L TP concentration providing up to 89% phenol degradation after an adaptation period.…”

Section: Effect Of Initial Tp Concentrationmentioning

confidence: 99%

“…[8] However, the use of Rhodotorula strains in biodegradation of OMW was recently appeared in the literature. [9][10][11][12] In our recent studies, we obtained up to 89% reduction in total phenol (TP) concentration in raw OMW by using free Rhodotorula glutinis cells indicating that this yeast is a potentially good * Corresponding author. Email: takac@eng.ankara.edu.tr candidate for biodegradation.…”

Section: Introductionmentioning

confidence: 99%

“…Email: takac@eng.ankara.edu.tr candidate for biodegradation. [9] On the other hand, the technology of immobilized cells, which provides several advantages over free cells such as easier separation of the cells from medium, providing operational stability of the cells and using the cells in consequence applications, was also tested in OMW treatment. The studies that cover the use of calcium alginate, [13][14][15] polyurethane-sponge, [16] sawdust from wood [17] and loofah [18,19] as immobilization materials are in a limited number and mainly were aimed to show the usability of that material in the treatment of OMW.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Parameters and kinetics of olive mill wastewater dephenolization by immobilizedRhodotorula glutiniscells

Bozkoyunlu

Takaç

2014

Environmental Technology

Self Cite

View full text Add to dashboard Cite

Olive mill wastewater (OMW) with total phenol (TP) concentration range of 300-1200 mg/L was treated with alginate-immobilized Rhodotorula glutinis cells in batch system. The effects of pellet properties (diameter, alginate concentration and cell loading (CL)) and operational parameters (initial TP concentration, agitation rate and reusability of pellets) on dephenolization of OMW were studied. Up to 87% dephenolization was obtained after 120 h biodegradations. The utilization number of pellets increased with the addition of calcium ions into the biodegradation medium. The overall effectiveness factors calculated for different conditions showed that diffusional limitations arising from pellet size and pellet composition could be neglected. Mass transfer limitations appeared to be more effective at high substrate concentrations and low agitation rates. The parameters of logistic model for growth kinetics of R. glutinis in OMW were estimated at different initial phenol concentrations of OMW by curve-fitting of experimental data with the model.

show abstract

Section: Effect Of Initial Tp Concentrationmentioning

confidence: 98%

Section: Effect Of Initial Tp Concentrationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Parameters and kinetics of olive mill wastewater dephenolization by immobilizedRhodotorula glutiniscells

Bozkoyunlu

Takaç

2014

Environmental Technology

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, wide applications of some of these remediation strategies have been limited due to problems such as high cost, low *Address correspondence to these authors at the Riga Technical University, Department of Water Engineering and Technology, 16, Azenes Street, Riga, LV-1046, Latvia; E-mail: maris.bernats@rtu.lv efficiency, and generation of toxic by-products [13,14]. Biological treatment with activated sludge, membrane reactors or trickling filters, have been tested with variable degree of success [15]. The main limitation of these conventional biological methods is use of bacteria as dominating biological agents in these systems, although they are not naturally designed for so strong bound break down and inhibited at high concentrations of phenol.…”

Section: Introductionmentioning

confidence: 99%

Factors Governing Degradation of Phenol in Pharmaceutical Wastewater by White-rot Fungi: A Batch Study

Bernats¹,

Juhna²

2015

TOBIOTJ

View full text Add to dashboard Cite

Phenol is a major contaminant in the industrial water effluent, including pharmaceutical wastewaters. Although several physic-chemical methods for removal of phenol exist, they are of high cost, low efficiency, and generate toxic byproducts. Thus, there is a need to develop technologies for biological removal of phenol from wastewater. In this study, the degradation of phenol in pharmaceutical wastewater by monoculture of white-rot fungi was studied. The degradation rate of total phenol in batch flasks by four fungal monocultures of Trametes versicolor, Phanerochaete chrysosporium, Gloeophyllum trabeum and Irpex lacteus in synthetic medium was compared. The results showed that white-rot fungus T.Versicolor was the most effective of the species. Further selection tests of optimal conditions of biomass concentration, pH and temperature were done, indicating that optimal conditions of degradation are at pH 5-6, temperature 25 o C, and biomass inoculum 10% (v/v). Under optimal conditions, total phenol was reduced by 93%, concentration of total phenol decreasing from 420±12 mg/l to 29±1 mg/l in seven days, with T.Versicolor specie. This study suggested that biological treatment with fungi may effectively be used as a pre-treatment stage for removal of phenol before polishing wastewater with conventional biological methods.

show abstract

Use of Olive Mill Wastewater as a Growth Medium for Superoxide Dismutase and Catalase Production

Değirmenbaşı

Takaç

2018

CLEAN Soil Air Water

Self Cite

View full text Add to dashboard Cite

Microbial processing of food industrial waste, olive mill wastewater (OMW), is a promising route from not only a bioremediation point of view but also for bio-refinery concept. Enzymes are among numerous products to be valorised from OMW. In this study, production of microbial antioxidant enzymes in OMW is successfully demonstrated for the first time. Superoxide dismutase (SOD) and catalase (CAT) activities by Rhodotorula glutinis cultivated in OMW in parallel with the biodegradation of wastewater are investigated. The effects of different carbon and nitrogen supplements as well as metal ions added to cultivation medium, temperature, and stress agents are examined to increase SOD and CAT activities. The results show that R. glutinis can grow and produce SOD and CAT in OMW medium. Ethanol as a carbon supplement and urea as a nitrogen supplement provide high enzyme activities. Low temperature stimulates SOD and CAT activities. Mg 2þ is the most effective metal ion for both enzyme activities. Treatment of cells with H 2 O 2 increases SOD and CAT activities whereas UV light did not affect the activities considerably. At all conditions, more than 75% decrease in total phenol concentration and about 75% consumption of reducing sugar presented in cultivation medium are obtained.

show abstract

Development of process conditions for biodegradation of raw olive mill wastewater by Rhodotorula glutinis

Cited by 30 publications

References 26 publications

Parameters and kinetics of olive mill wastewater dephenolization by immobilizedRhodotorula glutiniscells

Parameters and kinetics of olive mill wastewater dephenolization by immobilizedRhodotorula glutiniscells

Factors Governing Degradation of Phenol in Pharmaceutical Wastewater by White-rot Fungi: A Batch Study

Use of Olive Mill Wastewater as a Growth Medium for Superoxide Dismutase and Catalase Production

Contact Info

Product

Resources

About