02082naa a2200265 a 450000100080000000500110000800800410001902400520006010000150011224501310012726000090025830000100026752012900027765300180156765300150158570000180160070000170161870000220163570000180165770000190167570000160169470000230171070000230173377300600175621760032025-05-26       2025    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1007/s11270-025-07965-52DOI1 aBORGES, R.  aZinc and Cadmium Remediation in Contaminated Soil by CaCO3‑Biochar Material from Sugar Beet Industry.h[electronic resource]  c2025  a17 p.  aOre mining and other industrial processes can release toxic elements such as zinc and cadmium into the soil, posing a potential environmental risk. Biochar produced by biomass pyrolysis is proposed to treat contaminated soils by sorption of the contaminants while boosting soil fertility, water retention, and microbial activity. Here, we propose the utilization of Carbokalk, an inexpensive byproduct (spent lime, SL) of the sugar-beet industry, as an ideal source for soil-treatment biochar. We examined the pyrolysis of SL containing up to 20% organic matter at various temperatures and in an oxidizing (air) and inert (N2) atmosphere. Our results indicate that the pyrolysis temperatures and gas atmospheres greatly infuence the physicochemical features of SL-biochar, identifying the most suitable temperature of 600 ºC for both atmospheres. SL-biochar incubation in contaminated soil has shown the potential to mitigate metal contamination in soils. However, under an oxidizing atmosphere, SL-biochar provides higher reductions in exchangeable Zn and Cd fractions. It accounts for 3% and 20%, respectively, along with increases in fractions associated with carbonate and organic matter. These fndings demonstrate the efectiveness of SLbiochar in immobilizing these contaminants.  aCaCO3-biochar  aSpent lime1 aSOARES, M. B.1 aPOLLO, M. P.1 aALLEONI, L. R. F.1 aGIROTO, A. S.1 aGONÇALVES, M.1 aMÜLLER, M.1 aJABLONOWSKI, N. D.1 aOLIVEIRA, C. R. de  tWater, Air and Soil Pollutiongv. 236, n. 5, 325, 2025.