The Effect of Dissolved Humic Acids on Aluminosilicate Formation and Associated Carbon Sequestration
Figure 6
27Al MAS/NMR spectra of precipitates from solutions with 0.5 mM Si and (a-b) 0.5 mM Al; (c-d) 0.75 mM Al; (e–h) 1.0 mM Al; with and without 6 mg/L DOC as indicated. All spectra taken with SP excitation at 130.3 MHz (11.7 T) and 18 kHz spinning rate, except (g-h) obtained at 217 MHz (19.5 T), spinning at 10 kHz. Asterisks denote spinning sidebands.
