scholarly journals Erratum to : MICROBIAL COMMUNITY ANALYSIS OF THERMOPHILIC CONTACT OXIDATION PROCESS TREATMENT WITH EDIBLE OIL BY USING FISH, QUINONE PROFILE AND PCR-DGGE METHOD

2000 ◽  
Vol 2000 (643) ◽  
pp. e1-e1
Keyword(s):  
Microbial Community ◽  
Oxidation Process ◽  
Community Analysis ◽  
Edible Oil ◽  
Microbial Community Analysis ◽  
Quinone Profile ◽  
Contact Oxidation

scholarly journals Development and microbial community analysis of a biological treatment process for edible oil effluent

2003 ◽  
Author(s):  
◽  
Faizal Bux
Keyword(s):  
Microbial Community ◽  
Community Analysis ◽  
Poor Quality ◽  
Current Treatment ◽  
Edible Oil ◽  
Molecular Techniques ◽  
Microbial Community Analysis ◽  
Oil And Grease ◽  
Treatment Technology ◽  
Dissolved Air Flotation

Globally, wastewaters emanating from edible oil manufacturers contain high organic (BOD & COD) and phosphate loads and known for creating shock-loading problems for the receiving wastewater treatment installations. Discharge of poor quality final effluents also negatively impact on and cause eutrophication of natural water sources such as rivers and dams. In South Africa, a large concentration ofthe edible industries are localized in the Pietermaritzburg region of Kwa-Zulu Natal and have been regularly associated with discharge of poor quality final effluent that did not subscribe to municipal regulation standards. Current treatment of choice for wastewater's in the edible oil industry have been limited primarily to dissolved air flotation combined with the use of chemical coagulants or physical separation of oil and grease via a gravity fat trap and subsequent pH correction. These physico-chemical methods have achieved limited success and the emulsified grease tends to clog sewer pipes and pumps producing poor quality effluents. Therefore, the aim of the current research was to develop suitable treatment technology focussing on adapting activated sludge process to remediate edible oil effluents and determine the microbial community of the process using novel molecular techniques.

scholarly journals Supercritical Fluid Extraction of Quinones from Compost for Microbial Community Analysis

2015 ◽  
Vol 2015 ◽  
pp. 1-7
Author(s):  
Ni Luh Gede Ratna Juliasih ◽  
Lee Chang Yuan ◽  
Yuki Sago ◽  
Yoichi Atsuta ◽  
Hiroyuki Daimon
Keyword(s):  
Microbial Community ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Community Dynamics ◽  
Community Analysis ◽  
Ultra Performance Liquid Chromatography ◽  
Microbial Community Analysis ◽  
Fluid Extraction ◽  
Dissimilarity Index ◽  
Quinone Profile

Supercritical fluid extraction (SFE) was used to extract quinones from compost to monitor the microbial community dynamics during composting. The 0.3 g of dried compost was extracted using 3 mL min−1of carbon dioxide (90%) and methanol (10%) at 45°C and 25 MPa for a 30 min extraction time. The extracted quinones were analysed using ultra performance liquid chromatography (UPLC) with 0.3 mL min−1of methanol mobile phase for a 50 min chromatographic run time. A comparable detected amount of quinones was obtained using the developed method and an organic solvent extraction method, being 36.06 μmol kg−1and 34.54 μmol kg−1, respectively. Significantly low value of dissimilarity index (D) between the two methods (0.05) indicated that the quinone profile obtained by both methods was considered identical. The developed method was then applied to determine the maturity of the compost by monitoring the change of quinone during composting. The UQ-9 and MK-7 were predominant quinones in the initial stage of composting. The diversity of quinone became more complex during the cooling and maturation stages. This study showed that SFE had successfully extracted quinones from a complex matrix with simplification and rapidity of the analysis that is beneficial for routine analysis.

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