Related Experiment Video
Updated: Jul 8, 2025
05:29
Self-standing Electrochemical Set-up to Enrich Anode-respiring Bacteria On-site
Published on: July 24, 2018
7.7K
Environmental pollution removal using electrostimulation of microorganisms by alternative current
Shabnam Ahmadi1, Abbas Rezaee1
1Department of Environmental Health Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
Enzyme and Microbial Technology
|December 15, 2023
Summary
Alternative current bioelectrochemical systems (ACBESs) effectively remove pollutants like phenol and antibiotics. This microbial electrostimulation technology offers a promising, cost-effective solution for environmental remediation and energy production.
Area of Science:
- Environmental Science
- Electrochemistry
- Microbiology
Background:
- Toxic chemicals (antibiotics, pesticides, herbicides) pose significant environmental and health risks.
- Electrostimulation is explored for microbial pollutant treatment, but alternating current (AC) biostimulation remains understudied.
- Bioelectrochemical systems (BESs) offer a platform for pollutant remediation.
Approach:
- Systematic review of microbial electrostimulation using AC-supplied bioelectrochemical systems (ACBESs).
- Analysis of ACBES advantages, including biofilm formation, energy transfer, reduced hydraulic retention time (HRT), and cost-effectiveness.
- Meta-analysis of key parameters affecting pollutant removal efficiency: amplitude (AMPL), waveform, C/N ratio, and current.
Key Points:
- ACBESs promote active biofilms on electrodes due to cyclical current and efficient energy transfer.
- Optimal conditions in ACBESs can reduce HRT and electricity conversion costs.
- Pollutant removal efficiencies for phenol, antibiotics, and nitrate reached up to 96% using ACBESs.
Conclusions:
- Microbial electrostimulation with AC is a highly promising technology for pollutant decomposition and removal.
- ACBESs present new opportunities for enhancing BES applications, including hydrogen and methane production.
- Further research into ACBES parameters can optimize pollutant removal and energy generation.
Related Concept Videos
00:46Bioremediation
18.5K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.5K
01:06Coagulation
307
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
307
01:30Electroconvulsive Therapy
41
Electroconvulsive therapy (ECT), or shock therapy, remains a critical biomedical intervention for severe, treatment-resistant depression. While its origins can be traced back to Hippocrates' observations that malaria-induced convulsions alleviated mental illness, modern ECT has evolved significantly from its earlier, more primitive applications. First introduced in 1938 by Ugo Cerletti and his colleagues, ECT involves inducing controlled seizures using electrical currents. In its early...
41