Chaparro , L.K. and Berná, A. and Boltes, K. (2024) Bioelectroremediation of a Real Industrial Wastewater: The Role of Electroactive Biofilm and Planktonic Cells through Enzymatic Activities. Toxics, 12 (8). p. 614. ISSN 2305-6304
|
Text (Open access)
toxics-12-00614-v2.pdf - Published Version Available under License Creative Commons Attribution. Download (1819Kb) | Preview |
Abstract
Bioelectrochemical processes are emerging as one of the most efficient and sustainable technologies for wastewater treatment. Their application for industrial wastewater treatment is still low due to the high toxicity and difficulty of biological treatment for industrial effluents. This is especially relevant in pharmaceutical industries, where different solvents, active pharma ingredients (APIs), extreme pH, and salinity usually form a lethal cocktail for the bacterial community in bioreactors. This work evaluates the impact of the anode architecture on the detoxification performance and analyzes, for the first time, the profile of some key bioremediation enzymes (catalase and esterase) and reactive oxygen species (ROS) during the operation of microbial electrochemical cells treating real pharmaceutical wastewater. Our results show the existence of oxidative stress and loss of cell viability in planktonic cells, while the electrogenic bacteria that form the biofilm maintain their biochemical machinery intact, as observed in the bioelectrochemical response. Monitorization of electrical current flowing in the bioelectrochemical system showed how electroactive biofilm, after a short adaptation period, started to degrade the pharma effluent. The electroactive biofilms are responsible for the detoxification of this type of industrial wastewater.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | microbial electrochemical technology; industrial wastewater; enzymatic activities; toxicity |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering |
| Depositing User: | Belén Barroeta |
| Date Deposited: | 26 Sep 2024 13:19 |
| Last Modified: | 26 Sep 2024 13:19 |
| URI: | http://eprints.imdea-agua.org:13000/id/eprint/1665 |
Actions (login required)
 |
View Item |
