Towards chlorinated solvents, the effectiveness of the remediation strategy can be im- proved by combining a biological approach (e.g., anaerobic reductive dechlorination) with chemi- cal/physical treatments (e.g., adsorption). A coupled adsorption and biodegradation (CAB) process for trichloroethylene (TCE) removal is proposed in a biofilm–biochar reactor (BBR) to assess whether biochar from pine wood (PWB) can support a dechlorinating biofilm by combining the TCE (100 µM) adsorption. The BBR operated for eight months in parallel with a biofilm reactor (BR)—no PWB (biological process alone), and with an abiotic biochar reactor (ABR)—no dechlorinating biofilm (only an adsorption mechanism). Two flow rates were investigated. Compared to the BR, which resulted in a TCE removal of 86.9 ± 11.9% and 78.73 ± 19.79%, the BBR demonstrated that PWB effectively adsorbs TCE and slows down the release of its intermediates. The elimination of TCE was quantitative, with 99.61 ± 0.79% and 99.87 ± 0.51% TCE removal. Interestingly, the biomarker of the reductive dechlorination process, Dehalococcoides mccartyi, was found in the BRR (9.2 × 105 16S rRNA gene copies/g), together with the specific genes tceA, bvcA, and vcrA (8.16 × 106, 1.28 × 105, and 8.01 × 103 gene copies/g, respectively). This study suggests the feasibility of biochar to support the reductive

Coupled adsorption and biodegradation of trichloroethylene on biochar from pine wood wastes: a combined approach for a sustainable bioremediation strategy / Rossi, MARTA MARIA; Matturro, Bruna; Amanat, Neda; Rossetti, Simona; PETRANGELI PAPINI, Marco. - In: MICROORGANISMS. - ISSN 2076-2607. - 10:Microbial Biodegradation and Biotransformation(2022), pp. 101-116. [10.3390/microorganisms10010101]

Coupled adsorption and biodegradation of trichloroethylene on biochar from pine wood wastes: a combined approach for a sustainable bioremediation strategy

Rossi Marta Maria
;
Amanat Neda;Rossetti Simona;Petrangeli Papini Marco
2022

Abstract

Towards chlorinated solvents, the effectiveness of the remediation strategy can be im- proved by combining a biological approach (e.g., anaerobic reductive dechlorination) with chemi- cal/physical treatments (e.g., adsorption). A coupled adsorption and biodegradation (CAB) process for trichloroethylene (TCE) removal is proposed in a biofilm–biochar reactor (BBR) to assess whether biochar from pine wood (PWB) can support a dechlorinating biofilm by combining the TCE (100 µM) adsorption. The BBR operated for eight months in parallel with a biofilm reactor (BR)—no PWB (biological process alone), and with an abiotic biochar reactor (ABR)—no dechlorinating biofilm (only an adsorption mechanism). Two flow rates were investigated. Compared to the BR, which resulted in a TCE removal of 86.9 ± 11.9% and 78.73 ± 19.79%, the BBR demonstrated that PWB effectively adsorbs TCE and slows down the release of its intermediates. The elimination of TCE was quantitative, with 99.61 ± 0.79% and 99.87 ± 0.51% TCE removal. Interestingly, the biomarker of the reductive dechlorination process, Dehalococcoides mccartyi, was found in the BRR (9.2 × 105 16S rRNA gene copies/g), together with the specific genes tceA, bvcA, and vcrA (8.16 × 106, 1.28 × 105, and 8.01 × 103 gene copies/g, respectively). This study suggests the feasibility of biochar to support the reductive
bioremediation; adsorption; biochar; biodegradation; reductive dechlorination; dehalococ-coides mccartyi
01 Pubblicazione su rivista::01a Articolo in rivista
Coupled adsorption and biodegradation of trichloroethylene on biochar from pine wood wastes: a combined approach for a sustainable bioremediation strategy / Rossi, MARTA MARIA; Matturro, Bruna; Amanat, Neda; Rossetti, Simona; PETRANGELI PAPINI, Marco. - In: MICROORGANISMS. - ISSN 2076-2607. - 10:Microbial Biodegradation and Biotransformation(2022), pp. 101-116. [10.3390/microorganisms10010101]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1604696
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