title: Solid-liquid two-phase partitioning bioreactors (TPPBs) operated with waste polymers. Case study: 2,4-dichlorophenol biodegradation with used automobile tires as the partitioning phase.
abstract: Used automobile tire pieces were tested for their suitability as the sequestering phase in a two-phase partitioning bioreactor to treat 2,4-dichlorophenol (DCP). Abiotic sorption tests and equilibrium partitioning tests confirmed that tire "crumble" possesses very favourable properties for this application with DCP diffusivity (4.8 × 10(-8) cm(2)/s) and partition coefficient (31) values comparable to those of commercially available polymers. Biodegradation tests further validated the effectiveness of using waste tires to detoxify a DCP solution, and allow for enhanced biodegradation compared to conventional single-phase operation. These results establish the potential of using a low-cost waste material to assist in the bioremediation of a toxic aqueous contaminant.
authors: Water Research Institute, C.N.R, Via Salaria km 29, Monterotondo Stazione, Rome, Italy. tomei@irsa.cnr.it
authors: M Concetta
authors: MC
authors: Tomei
authors: M Cristina
authors: MC
authors: Annesini
authors: Andrew J
authors: AJ
authors: Daugulis
mesh_terms: D000042:Absorption; D001336:Automobiles; D001673:Biodegradation, Environmental; D019149:Bioreactors; D001709:Biotechnology / Q000295:instrumentation / Q000379:methods; D005591:Chemical Fractionation / Q000295:instrumentation* / Q000379:methods*; D002733:Chlorophenols / Q000737:chemistry*; D007700:Kinetics; D008956:Models, Chemical; D011108:Polymers / Q000737:chemistry*
chemical_list: D002733:Chlorophenols; D011108:Polymers; C004762:2,4-dichlorophenol