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. 2016 Oct 14;6:35446. doi: 10.1038/srep35446

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Copyright © 2016, The Author(s)

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(A) Quantitative sludge analysis by micro-CT. The test group exhibited a significantly lower total sludge volume than the control group (P < 0.01). (B) Total sludge volume in the test and control groups measured by micro-CT. The value (95.20 mm³) of the test group (AM-15, no. 5 in Table 1) was significantly lower than that (301.38 mm³) of the control group (AM-10, no. 4 in Table 1) (average P = 0.001). (C) Quantitative sludge analysis using ImageJ software. The test group exhibited a significantly lower percentage of sludge formation than the control group (P < 0.01). (D) Sludge quantitative analysis. Proportion of sludge formation in the test and control groups is shown. The value (5.3%) of the test group (AM-15) was significantly lower than that (41.0%) of the control group (AM-10) (average P < 0.01).