کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
34982 45064 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Bioremediation of phenol-contaminated water and soil using magnetic polymer beads
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Bioremediation of phenol-contaminated water and soil using magnetic polymer beads
چکیده انگلیسی

In order to easily separate pollutant-absorbing polymer beads from contaminated soil or water, novel polymer beads containing magnetic particles were developed. The polymer beads containing 4.67% (w/w) magnetic particles exhibited an almost identical partitioning coefficient for phenol compared to that of the pure polymer. A 1.5 L phenol solution of 2000 mg/L added to a bioreactor was reduced to 481 mg/L phenol within 3 h by adding 100 g of these magnetic beads, and the phenol was completely degraded by microorganisms in 16 h. The magnetized beads were then readily removed from the bioreactor by a magnet with 10,000 G, and subsequently detached for re-use. 500 g of soil contaminated with 4 mg-phenol/g-soil was also contacted with 100 g beads, and greater than 97% removal of phenol from the soil was achieved within 1 day. The phenol-absorbing beads were easily separated from the soil by the magnet and transferred into a fermentor. The phenol was released from the beads and was degraded by the microorganism in 10 h. Modifying polymers to possess magnetic properties has greatly improved the ease of handling of these sequestering materials when decontaminating soil and water sources, in conjunction with contaminant release in partitioning bioreactors.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Process Biochemistry - Volume 45, Issue 9, September 2010, Pages 1582–1586
نویسندگان
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