Ketahanan pencilan bakteria asli daripada enapcemar teraktif terhadap ferum dan mangan

Translated title of the contribution: Resistance of native bacteria isolated from activated sludge towards iron and manganese

Nuratiqah Marsidi, Hassimi Abu Hasan, Mohd Izuan Effendi Halmi, Siti Rozaimah Sheikh Abdullah

Research output: Contribution to journalArticle

Abstract

A study was conducted to observe the resistance of native isolated bacteria towards selected heavy metals (iron; Fe and manganese; Mn) in a separate exposure. Isolated bacteria were evaluated by culturing them in nutrient broth medium that contained approximately 3 ×10 6 CFU/mL bacteria with different initial concentrations (0, 50, 100 and 200 mg/L). Result showed that a plate with bacterial growth indicated bacterial resistance, which was verified based on CFU/mL. At 0 mg/L, bacteria grew well on the plate with Fe and Mn. The bacterial number began to decrease at 50 and 100 mg/L for Fe and at 200 mg/L for Mn. Only a few colonies survived (isolate AM2) the toxicity of high Fe amount; the isolated bacteria almost showed no growth along the plate. AM2, AM3 and AM4 presented resistance to Mn until 200 mg/L, but not AM6. The bacteria showed no growth at 100 and 200 mg/L. Thus, the Fe and Mn concentrations that can be applied during acclimatisation ranged from 0 mg/L to 200 mg/L with isolated AM2 and AM4 for Fe and Mn removal.

Original languageMalay
Pages (from-to)131-137
Number of pages7
JournalMalaysian Journal of Analytical Sciences
Volume23
Issue number1
DOIs
Publication statusPublished - 1 Feb 2019

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Manganese
Bacteria
Iron
Heavy Metals
Nutrients
Toxicity

ASJC Scopus subject areas

  • Analytical Chemistry

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Ketahanan pencilan bakteria asli daripada enapcemar teraktif terhadap ferum dan mangan. / Marsidi, Nuratiqah; Abu Hasan, Hassimi; Halmi, Mohd Izuan Effendi; Sheikh Abdullah, Siti Rozaimah.

In: Malaysian Journal of Analytical Sciences, Vol. 23, No. 1, 01.02.2019, p. 131-137.

Research output: Contribution to journalArticle

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abstract = "A study was conducted to observe the resistance of native isolated bacteria towards selected heavy metals (iron; Fe and manganese; Mn) in a separate exposure. Isolated bacteria were evaluated by culturing them in nutrient broth medium that contained approximately 3 ×10 6 CFU/mL bacteria with different initial concentrations (0, 50, 100 and 200 mg/L). Result showed that a plate with bacterial growth indicated bacterial resistance, which was verified based on CFU/mL. At 0 mg/L, bacteria grew well on the plate with Fe and Mn. The bacterial number began to decrease at 50 and 100 mg/L for Fe and at 200 mg/L for Mn. Only a few colonies survived (isolate AM2) the toxicity of high Fe amount; the isolated bacteria almost showed no growth along the plate. AM2, AM3 and AM4 presented resistance to Mn until 200 mg/L, but not AM6. The bacteria showed no growth at 100 and 200 mg/L. Thus, the Fe and Mn concentrations that can be applied during acclimatisation ranged from 0 mg/L to 200 mg/L with isolated AM2 and AM4 for Fe and Mn removal.",
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