Decreased aztreonam susceptibility amongPseudomonas aeruginosaisolates from hospital effluent treatment system and clinical samples

A piggery with an integrated slurry removal and treatment system with heat recovery and two algal raceways for a secondary treatment of settled treated slurry has been built. Piggery slurry from about 250 fattening pigs and 100 weaners has been aerobically treated in a continuous culture reactor at 36°C. Metabolic heat and heat from the aerator after upgrading by a heat pump was utilized for space heating in a weaner house and in one of the algal raceways. Intermittent heating had little effect upon algal productivity and effluent treatment since the system was essentially light limited. Characteristics of treated slurry and quantity of heat evolved are in good agreement with predicted values by a mathematical model.

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Removal of silver from photographic wastewater effluent using Acinetobacter baumannii BL54

Canadian Journal of Microbiology ◽

10.1139/w99-077 ◽

1999 ◽

Vol 45 (12) ◽

pp. 995-1000 ◽

Cited By ~ 9

Author(s):

Mohammad Reza Shakibaie ◽

Balu Parnab Kapadnis ◽

Pershant Dhakephalker ◽

Balu Ananda Chopade

Keyword(s):

Acinetobacter Baumannii ◽

Armed Forces ◽

Polymyxin B ◽

Wastewater Effluent ◽

Effluent Treatment ◽

Clinical Samples ◽

Considerable Decrease ◽

College Hospital ◽

Medical College ◽

Good Potential

Acinetobacter baumannii BL54, a silver (Ag) resistant micro-organism was isolated from clinical samples collected at the Armed Forces Medical College hospital in Pune, India. The strain BL54 removed a high quantity of silver (2.85 mg/g biomass) from photographic wastewater effluent. Treatment of the cells with 10 mM EDTA or agitating the culture did not affect the removal process, while altering pH of the wastewater or pre-treating the cells with 0.5 mM 2,4-dinitrophenol (DNP), 20 μM N,N'-dicyclohexylcarbodiimide (DCC), 25 μg/mL cefotaxime, and polymyxin-B resulted in considerable decrease in removal of silver by the organism. Dead cells, or a Ags plasmid-cured derivative (BL54.1) removed little silver, which was mainly surface bound. The results, compared with accumulation of Ag by a sensitive culture of Escherichia coli K12 J53.2, suggest that A. baumannii BL54 has good potential for bioremediation of silver from photographic wastewater effluents. Key words: Acinetobacter, silver resistance, silver removal.

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Rubber Based Industries: A Case Study on Effluent Treatment

Water Science & Technology ◽

10.2166/wst.1986.0036 ◽

1986 ◽

Vol 18 (3) ◽

pp. 41-46

Author(s):

C. K. John ◽

P. F. Shea

Keyword(s):

Natural Rubber ◽

Manufacturing Industry ◽

Waste Treatment ◽

Domestic Market ◽

Treatment System ◽

Effluent Treatment ◽

The Past ◽

Suitable Treatment ◽

Manufactured Goods

In Malaysia, the bulk of natural rubber produced is exported. Only 4% is currently used by the domestic market in the production of manufactured goods. Whereas much has been written about waste treatment with respect to processing of the raw latex, little has been published on the particular difficulties of treating the waste generated during manufacture of rubber based products. This paper describes one use of natural rubber in the Malaysian manufacturing industry, details the conceptual planning of a suitable treatment system and relates operating experiences over the past two years.

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