کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1648604 1007560 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sand bioconsolidation through the precipitation of calcium carbonate by two ureolytic bacteria
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Sand bioconsolidation through the precipitation of calcium carbonate by two ureolytic bacteria
چکیده انگلیسی

Two ureolytic strains, B. sphaericus LMG 22257 and Bacillus sp (I-001), were tested for their ability to consolidate sand by submitting them to two days' treatment using 107 viable cell concentrations of inocula and medium precipitation with calcium ions. The results showed that B. sphaericus LMG 22257 induced greater calcium carbonate formation. Both strains produced calcite and were able to consolidate sand. Tensile strength of consolidated sand was not a function of the amount of precipitated CaCO3 but a linear function of the ratio bioconsolidation index (BC) defined as the ratio of CaCO3 volume to initial sand porosity. A simple model to estimate the engineering benefits of consolidation is proposed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 65, Issue 11, 15 June 2011, Pages 1730–1733
نویسندگان
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