Optimization of the Fabrication of Sustainable Ceramsite Adsorbent from Coal Fly Ash/Waterworks Sludge/Waste Glass for Decolorization of Malachite Green

Figure 2

(a) Response surface plot and (b) contour line map decolorization efficiency of MG sintering temperature vs. preheating temperature. (c) Response surface plot and (d) contour line map decolorization efficiency of MG sintering time vs. preheating temperature. (e) Response surface plot and (f) contour line map decolorization efficiency of MG sintering temperature vs. sintering time (the initial concentration of MG was 56.876 mg/L and the adsorption time was set to 24 h).

(a)

(b)

(c)

(d)

(e)

(f)