Figure 3
From: Coupling electro-dewatering and low-temperature air-drying for efficient dewatering of sludge
(a) The weight of sludge cake, (b) water content variation during air-dry process and (c) the water vapor diffusion activity in sludge cake (the ratio of the slope of the sludge air-drying curve to the slope of the water–air drying curve under the same conditions).
