کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
584390 | 1453178 | 2007 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Biological detoxification of Cr(VI) using wood-husk immobilized Acinetobacter haemolyticus
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Biological detoxification of Cr(VI) using wood-husk immobilized Acinetobacter haemolyticus Biological detoxification of Cr(VI) using wood-husk immobilized Acinetobacter haemolyticus](/preview/png/584390.png)
چکیده انگلیسی
Acinetobacter haemolyticus, a Gram-negative aerobic locally isolated bacterium, immobilized on wood-husk showed the ability to detoxify Cr(VI) to Cr(III). Wood-husk, a natural cellulose-based support material, packed in an upward-flow column was used as support material for bacterial attachment. Around 97% of the Cr(VI) in wastewater containing 15 mg Lâ1 of Cr(VI) was reduced at a flow rate of 8.0 mL minâ1. The wastewater containing Cr(VI) was added with liquid pineapple wastewater as nutrient source for the bacteria. Electron microscopic examinations of the wood-husk after 42 days of column operation showed gradual colonization of the wood-husk by bacterial biofilm. The use of 0.1% (v/v) formaldehyde as a disinfecting agent inhibited growth of bacteria present in the final wastewater discharge. This finding is important in view of the ethical code regarding possible introduction of exogenous bacterial species into the environment.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 148, Issues 1â2, 5 September 2007, Pages 164-171
Journal: Journal of Hazardous Materials - Volume 148, Issues 1â2, 5 September 2007, Pages 164-171
نویسندگان
Zainul Akmar Zakaria, Zainoha Zakaria, Salmijah Surif, Wan Azlina Ahmad,