Synthetic dairy wastewater treatment using cross flow medium trickling filter

Raj, S. Amal; Murthy, D. V. S.

doi:10.1080/10934529909376841

Cited by 16 publications

(10 citation statements)

References 1 publication

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“…In consistence with the present study, biological treatment of fat-containing wastes significantly removed the organic load (COD, BOD 5 ) as well as FOG (ELGohary et al 1987;Martine 1991;Martirani et al 1996;Raj & Murthy 1999). Moreover, in the present work, using a mixed culture was more effective in reducing COD, BOD 5 and FOG, which was previously indicated by other workers (Odegaar et al 1998).…”

Section: Using Bacterial Strains In Combinationssupporting

confidence: 91%

The Potentiality of Free Gram-negative Bacteria for Removing Oil and Grease from Contaminated Industrial Effluents

El-Bestawy

El-Masry

El-Adl³

2005

World J Microbiol Biotechnol

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Eight bacterial species were isolated from vegetable oil and grease-contaminated industrial wastewater, only four of which were found to have the ability to degrade oil and grease in the contaminated wastewater. These isolates were identified according to morphological and biochemical profiles as, Pseudomonas sp. (L1), P. diminuta (L2), P. pseudoalcaligenes (L3), and Escherichia sp. (L5). The degradative capabilities of the identified bacterial isolates for Tween 20 (Tw20) were investigated under different pH levels (6.5, 7, 7.5, and 8), different temperatures (30 and 37°C) and different concentrations of Tw20 (1, 1.5, and 2%). Results revealed differences in their optimum conditions for maximum degradation of vegetable oil. Bacterial isolates were tested individually or in combinations using synthetic aqueous medium supplemented with 1% palm oil, incubated at 30°C, and agitated at 150 rev/min for 13 days. All the tested bacteria were able to degrade the palm oil completely and utilized the free fatty acids (FFA) as a carbon source. The combination M1 (Pseudomonas sp. and P. diminuta) produced the highest degradative activity, followed by M3 (Pseudomonas sp., P. diminuta and P. pseudoalcaligenes). Also M1 produced the highest activity in reducing COD (93%) and BOD 5 (100%).

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Section: Using Bacterial Strains In Combinationssupporting

confidence: 91%

The Potentiality of Free Gram-negative Bacteria for Removing Oil and Grease from Contaminated Industrial Effluents

El-Bestawy

El-Masry

El-Adl³

2005

World J Microbiol Biotechnol

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“…In consistence with the present study, biological treatment of oil-containing wastes significantly reduced organic load (COD) (EL-Gohary et al 1987;Martine 1991; Martirani et al 1996;Odegaar et al 1998;Raj and Murthy 1999;El-masry et al 2004 andEl-Bestawy et al 2005). This biological treatment depends greatly on active microorganisms, which utilizes the organic substances present in the POME as nutrients and eventually degrades these organic matters into simple by-products such as methane, carbon dioxide, hydrogen sulphide and water .…”

Section: Resultssupporting

confidence: 75%

“…In a similar study, characterization of the wastewater from food-processing plants indicated that the waste was highly contaminated with organic compounds as indicated by the high values of BOD 5 (EL-Gohary et al 1987). However, the biological treatment of oil-containing wastes significantly removed the organic load (BOD 5 ) in the polluted wastewater as shown also by other authors (Martine 1991;Martirani et al 1996;Raj and Murthy 1999). In the present study, using mixed culture was more effective in reducing BOD 5 , which was previously indicated by Odegaar et al (1998).…”

Section: Resultssupporting

confidence: 53%

Studies on the reduction of organic load from palm oil mill effluent (POME) by bacterial strains

Bala

Lalung

Ismail

2014

Int J Recycl Org Waste Agricult

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Introduction Palm oil mill effluent (POME) contains large quantities of organic matter in the form of total suspended solids (TSS), volatile suspended solids (VSS), total solids (TS), oil and grease (O & G) that increase biochemical oxygen demand (BOD) and chemical oxygen demand (COD) of POME if left untreated. The main aim of the present study was to investigate the ability of bacterial strains either pure (individually) or mixed (combinations), to degrade and metabolize organic load from palm oil mill effluent. Results Sequencing of the 16S rRNA of the isolates suggests that they were identified as Micrococcus luteus 101 PB, Stenotrophomonas maltophilia 102 PB, Bacillus cereus 103 PB, Providencia vermicola 104 PB, Klebsiella pneumoniae 105 PB and Bacillus subtilis 106 PB. The use of mixed cultures in the present study showed more extensive removal of organic load (COD and BOD) than pure single cultures. Mixed cultures were found to reduce the pollutant dynamically. Thus, the mixed cultures C 1 (Bacillus cereus 103 PB and Bacillus subtilis 106 PB) were the most effective bacterial combination for use in biological treatment technology of POME having the highest COD and BOD reduction rate. C 1 produced the highest degradative activity in reducing COD (90.64 %) and BOD (93.11 %). Conclusion The indigenous microbial isolates from POME were observed to possess potential to degrade organic components whereas the use of mixed cultures resulted in more extensive degradation of COD and BOD than pure single cultures. This suggests that mixed culture of bacteria in the present study can be used for bioremediation of environment contaminated with polluted wastewaters. This study, however, indicates the prospect of isolating indigenous microorganisms in the POME for effective biotreatment of POME.

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“…A decrease in COD removal efficiency was observed when hydraulic loading rate increased. [16] In another study [2] , a sequencing batch reactor (MSBR) biofilm system was examined for treatment of milk industry wastewater. The effect of OLR on COD and BOD removal was clearly demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Biological treatment of milk processing wastewater in a sequencing batch flexible fibre biofilm reactor

Abdulgader

Qian

Zinatizadeh

et al. 2009

Asia-Pacific J Chem Eng

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Biological treatment of dairy wastewater was investigated using a laboratory scale aerobic sequencing batch flexible fibre biofilm reactor (SBFFBR). The SBFFBR system was modified from a typical sequencing batch reactor system by using eight flexible fibre bundles with a very high specific surface area, which served as support for microorganisms. The reactor was operated under different influent chemical oxygen demand (COD) concentrations (610, 2041 and 4382 mg l −1 ) and constant hydraulic retention times of 1.6 days. The results have shown successful applicability of the SBFFBR system to treat this dairy wastewater. High COD removal efficiencies between 89.7 and 97% were achieved at average organic loading rates of 0.4 and 2.74 kg COD m −3 d −1 , respectively.  2009 Curtin

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Synthetic dairy wastewater treatment using cross flow medium trickling filter

Cited by 16 publications

References 1 publication

The Potentiality of Free Gram-negative Bacteria for Removing Oil and Grease from Contaminated Industrial Effluents

The Potentiality of Free Gram-negative Bacteria for Removing Oil and Grease from Contaminated Industrial Effluents

Studies on the reduction of organic load from palm oil mill effluent (POME) by bacterial strains

Biological treatment of milk processing wastewater in a sequencing batch flexible fibre biofilm reactor

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