RESEARCH / A0046
Kinetics-controlled lattice relaxation enables selective lead extraction from hazardous jarosite waste
Read the original paper · 10.1016/j.cej.2026.179771 ↗
Source figures may contain other techniques and soft X-ray spectra. C, N and O measurements are outside our current hard-XAFS testing range.
Fig. 4. Defect evolution during calcination-quenching. (a) XAS spectra at normalized Fe K-edge, (b) Fourier transform plots derived from the k2-weighted EXAFS spectra at Fe K-edge, (c) wavelet transform plots of the k2-weighted EXAFS signals for Fe2O3, pristine, and quenched Pb-natrojarosite. (d) O K-edge sXAS spectra, (e) Fe L-edge sXAS spectra for pristine and quenched Pb-natrojarosite. (calcinating temperature is 400 ◦C, quenching cycles are 5, calcinating time is 30 min and 1 h, quenching medium is 4 ◦C 0.5 mol L−1 NaCl solution).