An apparatus for abatement of effluent from a liquid delivery CVD process for depositing BST on a substrate from a precursor composition including corresponding barium strontium titanate metalorganic source reagents, wherein organic solvent is contained in the precursor composition and/or employed as a flush medium in the liquid delivery CVD process, and organic solvent correspondingly is present in effluent from the liquid delivery CVD process, said apparatus comprising an effluent flow circuit including in sequence a metals trap, a motive fluid driver, and at least one sorbent comprising adsorbent material, wherein the adsorbent material comprises a carbon sorbent comprising an- oxidizing material selected from the group consisting of permanganates and metal oxides, having sorptive affinity for organic species.