کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
156869 456951 2011 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Compression–permeability characteristics of mineral sediments evaluated with analytical photocentrifuge
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Compression–permeability characteristics of mineral sediments evaluated with analytical photocentrifuge
چکیده انگلیسی

This work discusses applications of analytical photocentrifuge LUMiSizer for estimation of the low-pressure compression–permeability characteristics of aqueous calcium carbonate sediments. Two approaches for estimation of compressibility–permeability parameters were tested. These approaches are based on (1) analysis of equilibrium height of sediment H∞ versus centrifugal rotation speed Ω and (2) analysis of kinetic curves of the consolidation ratio U(t) at different rotation speeds Ω. The approach (1) allowed fair fitting of experimental H∞ (Ω) data with parameters pa=70.9±0.9 Pa and β=0.1777±0.0005 in Tiller's equation relating the volume fraction φ and solid pressure ps. The two independent approaches (1) and (2) evidenced the presence of the scaling law relating consolidation coefficient C and solid pressure ps, C∝psγ with the similar exponents γ≈0.85±0.03 (for the studied solid pressure region 5 kPa≤ps≤75 kPa).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Science - Volume 66, Issue 6, 15 March 2011, Pages 1296–1305
نویسندگان
, , , ,