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Biochar (BC), a biomass-derived black carbon with interconnected networks of micropores, is an economical substitute for conventional adsorbents, such as activated carbon. In this study, we investigated the effect of acid modification on the functional groups and adsorptive capacity of the biochar. The BC used here is prepared through pyrolysis at temperatures in the range between 700 °C and 900 °C in an argon gas inert environment from three different biomasses: walnut shells, pecan shells, and loblolly pine. Then, the BCs are modified using hydrochloric acid (HCl) and used for the remediation of chlorinated hydrocarbons such as trichloroethylene (TCE). The results can advance the understanding of different modification effects on BCs’ properties, aiming at the wide adoption of cost-effective and eco-friendly adsorbents.
Biochar; Pyrolysis; Trichloroethylene (TCE); Tetrachloroethylene (PCE)
Hofert, Ashtin; Obra, Christina; Venkat, Suraj; Krishnaswamy, Padmanabhan; and Marti, Erica Ph.D., "A Study on Modified Biochars for the Removal of Trichloroethylene (TCE)" (2021). Undergraduate Research Symposium Posters. 12.