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The aim of this work was to explore the potential application of biochar from distillers’ grains anaerobic digestion residue pyrolyzed at 700 °C (ADR-DG700) to ammonium (NH4+) adsorption from aqueous solution, as well as its effect on NH4+ leaching from an Ultisol. The adsorption kinetic of NH4+ on the ADR-DG700 could be described by an Elovich model (R2 = 0.995), and the combined Langmuir-Freundlich...
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