Comparative Screening of Residual Biomass Hydrochars as Low-Dose Amendments for Short-Term Metal Retention in an Alkaline Soil Slurry
Hydrochars (HCs) were produced from pine needles (urban waste), brewer’s spent grain, and grape pomace via hydrothermal carbonization (HTC) at 230 °C, and were comparatively assessed as unmodified, low-dose amendments (1 wt%) in an alkaline soil slurry. Fixed-contact-time (4 h) batch tests were conducted using a Taguch...