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Related Experiment Video

Updated: Jun 17, 2026

Coupling Carbon Capture from a Power Plant with Semi-automated Open Raceway Ponds for Microalgae Cultivation

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Electro-coagulation-flotation process for algae removal.

Shanshan Gao¹, Jixian Yang, Jiayu Tian

¹State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin 150090, Hei Longjiang, China. luck81919@hotmail.com

Journal of Hazardous Materials

|January 1, 2010

Summary

This summary is machine-generated.

Electro-coagulation-flotation (ECF) effectively removes algae from surface water using aluminum electrodes. This technology achieves 100% algae removal at optimal conditions with low energy consumption.

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Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae

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Published on: July 10, 2015

Area of Science:

Environmental Science
Water Treatment Engineering
Applied Electrochemistry

Background:

Algal blooms in surface waters pose significant global challenges for drinking water treatment and quality.
Existing water treatment processes can be negatively impacted by the presence of algae.

Purpose of the Study:

To investigate the efficacy of electro-coagulation-flotation (ECF) technology for removing algae from surface water.
To determine optimal parameters and understand mechanisms of algae removal using ECF.

Main Methods:

Experimental investigation of algae removal using electro-coagulation-flotation (ECF).
Evaluation of aluminum and iron as electrode materials.
Determination of optimal operating parameters including current density, pH, temperature, and initial algae density.
Analysis of removal mechanisms using atomic force microscopy (AFM).

Main Results:

Aluminum electrodes demonstrated superior performance for algae removal compared to iron.
Optimal conditions achieved 100% algae removal with an energy consumption of 0.4 kWh/m³.
ECF was effective in acidic and neutral pH ranges (4-7), primarily via charge neutralization.
Algae removal efficiency decreased at higher pH (7-10) with mechanisms shifting to sweeping flocculation and enmeshment.

Conclusions:

Electro-coagulation-flotation (ECF) is a technically effective and economically viable method for algae removal from surface water.
Optimized ECF parameters and understanding pH-dependent mechanisms enhance treatment efficiency.
Further research can leverage these findings for improved drinking water treatment strategies.