Temperature effects on vanadium speciation and adsorption to biochar alone and biochar-metal oxide nanoparticle composites.

ABSTRACT: Vanadium (V) is a potentially toxic metal widely distributed in the environment. This study investigates temperature effects on V adsorption and speciation in biochar (BC) and BC-metal oxide composites under conditions relevant to contaminated soils in temperate climates. While BC and metal oxide nanoparticles can individually immobilize V, limited information exists on temperature effects. This study investigates V adsorption and surface characteristics of BC alone and BC combined with iron (Fe), aluminum (Al), and titanium (Ti) oxide nanoparticles (BC: oxides at 5:1 ratio) at warm (22°C) and cold (4°C) temperatures. V adsorption was conducted at pH 7.5 using concentrations from 0 to 40 mg L^-1. Visual MINTEQ modeling software was used to predict dissolved V species at experimen

SUBMITTER: Singh D 

PROVIDER: S-EPMC12827837 | biostudies-literature | 2026 Jan-Feb

REPOSITORIES: biostudies-literature