Z. Liu, M. Hughes, Y. Tong et al.
Energy 239 (2022) 121925
Fig. 7. XRD of new and used p-sludge biochars and raw p-sludge (Because the CO 2 partial pressure during catalyst preheating and biosolids pyrolysis was lower than the CO 2 equilibrium pressure (equilibrium with CaCO 3 ) of 24 kPa at 800 C, calcination happened during repeated use.).
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