Growth and heavy metal removal by Klebsiella aerogenes at different pH and temperature

Journal Article · Sun Jan 01 00:00:00 EST 1984 · J. Environ. Sci. Health, Part A; (United States)

DOI:https://doi.org/10.1080/10934528409375170· OSTI ID:6094920

Al-Shahwani, M F; Jazrawi, S F; Al-Rawi, E H; Ayar, N S

A strain of Klebsiella aerogenes isolated from Rustamiyah Station for treatment of wastewater was examined for its ability to grow in a media supplemented with maximum tolerance concentrations of Pb/sup + +/, Zn/sup + +/, Ni/sup + +/, and Cd/sup + +/, separately, at different temperatures and initial pH. The results indicated that at 28/sup 0/C during the first 24 hr, Pb/sup + +/ and Ni/sup + +/ had no effect on the growth of the bacteria, while the presence of Zn/sup + +/ and Cd/sup + +/ decreased the cell count. The growth reached a maximum level after the second day and started to decrease gradually. The bacterial count at 37/sup 0/C was less than that at 28/sup 0/C. No bacterial multiplication occurred at 44/sup 0/C. There was little difference between heavy metal removal at 28 and 37/sup 0/C. At 44/sup 0/C, little removal took place. In general, slightly acidic or neutral medium was better for both bacterial growth and metal removal.

• Research Organization: Biological Research Center, Baghdad, Iraq
• OSTI ID: 6094920
• Journal Information: J. Environ. Sci. Health, Part A; (United States), Vol. A19:4
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CADMIUM
REMOVAL
KLEBSIELLA
GROWTH
LEAD
NICKEL
WASTE WATER
WASTE PROCESSING
ZINC
PH VALUE
RESPONSE MODIFYING FACTORS
TEMPERATURE DEPENDENCE
BACTERIA
ELEMENTS
HYDROGEN COMPOUNDS
LIQUID WASTES
MANAGEMENT
METALS
MICROORGANISMS
OXYGEN COMPOUNDS
PROCESSING
TRANSITION ELEMENTS
WASTE MANAGEMENT
WASTES
WATER
560302* - Chemicals Metabolism & Toxicology- Microorganisms- (-1987)