Improved production of biosurfactant by a Pseudomonas aeruginosa mutant using vegetable oil refinery wastes

Contamination of soil / water resources by petroleum products poses severe threats to underground water and soil quality. In the present study biosurfactant producing bacterial cultures were used to degrade petrol engine oil under in situ conditions in the plant rhizosphere system. Two bacterial isolates used in this study were recovered from Haldia oil refinery sites and identified as Pseudomonas aeruginosa (JX100389) and P. moraviensis (JX149542). Application of consortium C2, (Pseudomonas aeruginosa and P. moraviensis) degraded 79.02 % petrol engine oil @ 2% in the soil planted with mustard (Brassica juncea var. Kranti) crop after 120 days. GC-MS of biodegraded fuel showed the presence of new product like hexadecanoic acid 2, oxo-methyl ester.Int J Appl Sci Biotechnol, Vol 3(2): 261-266 DOI: http://dx.doi.org/10.3126/ijasbt.v3i2.12475

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Resume of total operation of waste treatment facility for animal and vegetable oil refinery

Journal of the American Oil Chemists Society ◽

10.1007/bf02641427 ◽

1975 ◽

Vol 52 (1) ◽

pp. a9-a13 ◽

Cited By ~ 2

Author(s):

W. C. Seng ◽

G. M. Kreutzer

Keyword(s):

Vegetable Oil ◽

Waste Treatment ◽

Oil Refinery ◽

Treatment Facility

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Valorization of Opuntia ficus-Indica Pads and Steel Industry FeCl3-Rich Rejection for Removing Surfactant and Phenol from Oil Refinery Wastewater Through Coagulation-Flocculation

Journal of Health and Pollution ◽

10.5696/2156-9614-10.28.201204 ◽

2020 ◽

Vol 10 (28) ◽

Author(s):

Ouafae Dkhissi ◽

Mohammed Chatoui ◽

Ahmed El Hakmaoui ◽

Meriem Abouri ◽

Yassine Kadmi ◽

...

Keyword(s):

Vegetable Oil ◽

Low Cost ◽

Oil Refinery ◽

Phenol Removal ◽

Refinery Wastewater ◽

Pollution Load ◽

Cost Effective Treatment ◽

High Pollution ◽

Pollution Loads ◽

Oil Refinery Wastewater

Background. Refinement of crude vegetable oil generates a large amount of wastewater and is a source of water pollution due to the presence of surfactants and phenols. Phenols are toxic aromatic compounds that can be lethal to fauna and flora, entraining the deceleration or blocking of the self-purification of biological treatments. In addition, surfactants can limit biological processes by inhibiting microorganisms that degrade organic matter. Objectives. The aim of the present study was to evaluate the treatment of refinery rejects loaded with phenols and detergents by coagulation flocculation using cactus pads (genus Opuntia) as a bio-flocculant and 30% iron(III) chloride (FeCl3) for surfactant and phenol removal. In addition, operating costs were evaluated for these pollution mitigation methods. Methods. The effectiveness of cactus pads as a bio-flocculant and 30% FeCl3 for surfactant and phenol removal were studied using a jar test. The study was conducted on vegetable oil refinery wastewater from a refinery company in Casablanca, Morocco. Results. The pollution load in wastewater varied widely from day to day. We evaluated the effect of cactus juice and 30% FeCl3 on high and low pollution loads. Opuntia pads showed a favorable potential for the treatment of low pollution load wastewater, with 78% and 90% of surfactant and phenol removed, respectively. However, the removal of high pollution load was less effective (42% and 41% removal of surfactant and phenol, respectively). The turbidity of low and high pollution load was reduced by 98.85% and 86%, respectively. The results demonstrate that 30% FeCl3 can effectively treat both low and high pollution loads (90% and 89% phenol removal, respectively, and 90% and 70% surfactant removal, respectively (optimal concentration 1.48 g/l). The turbidity was reduced by over 96% for both high and low pollutants. Conclusions. The results of the present study indicate that cactus as a natural flocculant and reject rich in FeCl3 could be effectively used for the low-cost effective treatment of crude vegetable oil refinery rejects. Competing Interests. The authors declare no competing financial interests

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Quality Assessment of Vegetable Oil Industry Effluents in Port Harcourt, Rivers State, Nigeria

International Letters of Chemistry Physics and Astronomy ◽

10.18052/www.scipress.com/ilcpa.33.179 ◽

2014 ◽

Vol 33 ◽

pp. 179-189 ◽

Cited By ~ 2

Author(s):

Andrew Wirnkor Verla ◽

E.N. Verla ◽

P. Adowei ◽

A. Briggs ◽

M. Horsfall

Keyword(s):

Waste Water ◽

Heavy Metal ◽

Organic Pollutants ◽

Vegetable Oil ◽

Pollution Index ◽

Oil Refinery ◽

Oil Refining ◽

Water Tank ◽

Significant Difference ◽

Vegetable Oil Refining

Five composite samples of waste water were collected from waste water tank of a vegetable oil refining company and were analyzed for physiochemical characteristics, heavy metal and organic pollutants. Physicochemical determinations were done according to standard methods; heavy metals were determined by use of Atomic Absorption Spectrophotometer method while organic pollutants were determined by Gas chromatography system HP 6890 series. Sulphate was determined by vanadomolybdophosphoric acid method while phosphates and chlorides were determined by argentometric method. Results reveal that effluent pH (4.67 ±0.015), salinity (125 ±4.50 %) and BOD5 (17.83 ±1.70 mg/l) were bellow WHO standard whereas TDS (127.7 ±5.77 mg/l), TSS (563.6 ±3.15 mg/l) and COD (3959 ±3.8 mg/l) were above WHO standards. Heavy metal pollution index (0.31) showed no multi-element contamination arising from effluent. The degree of contamination (1.84) showed that the effluent has a moderate polluting potential. Lower molecular weight PAHs showed a significant difference even though most of the organic compounds in vegetable oil refinery wastewater showed good biodegradability that varied weekly. Therefore there is either no treatment or an in effective treatment of the effluents. This could result to serious environmental problems in the near future.

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