Fig. 1. X-ray diffraction pattern of the Fe oxide sludge specimen used to amend soil samples showing (a) 2-line ferrihydrite (0.25 and 0.15 nm) and goethite (G), and (b) acid insoluble residue of quartz (Q) and kaolinite (K).
Fig. 1. X-ray diffraction pattern of the Fe oxide sludge specimen used to amend soil samples showing (a) 2-line ferrihydrite (0.25 and 0.15 nm) and goethite (G), and (b) acid insoluble residue of quartz (Q) and kaolinite (K).