Electrolytic Filtration for Algae Separation
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Solution Overview
Problem
Current methods for separating algae from aqueous solutions, such as filtration, face significant challenges due to filter medium clogging, which increases energy consumption and operational costs, and existing technologies like solvent extraction produce hazardous waste and are energy-intensive.
Innovation Solution
An electrolytic apparatus and method that applies a controlled electric field to suspended particles in an aqueous solution, using pulsed current or voltage to move particulates away from the filter medium, thereby minimizing or eliminating clogging and reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If filtration is used to separate algae from aqueous solutions, then separation is achieved, but filter medium clogging occurs which increases energy consumption and operational costs
Solution Approach 1:
The patent replaces the purely mechanical filtration system with an electro-mechanical system that uses electric fields to manipulate particle behavior. Electrophoresis and electroosmosis effects are employed to prevent particle deposition on the filter medium, thereby maintaining separation effectiveness while reducing energy consumption and extending filter life.
Solution Approach 2:
The patent changes the physical-chemical parameters of the suspension by applying electric fields. The electric field alters the zeta potential of particles and the flow characteristics of the liquid, transforming the filtration process from a passive mechanical operation to an active electro-chemical process that prevents clogging.
2Reliability
If filtration is used to separate algae from aqueous solutions, then separation is achieved, but filter medium clogging occurs reducing productivity
Solution Approach 1:
The patent replaces the purely mechanical filtration system with an electro-mechanical system that uses electric fields to manipulate particle behavior. Electrophoresis and electroosmosis effects are employed to prevent particle deposition on the filter medium, thereby maintaining separation effectiveness while reducing energy consumption and extending filter life.
Solution Approach 2:
The patent applies electric fields before and during the filtration process to preemptively prevent particle accumulation on the filter medium. By controlling particle migration and liquid flow in advance, the system maintains consistent throughput without the periodic disruptions caused by clogging and filter replacement.
3Quantity of substance
If solvent extraction is used to extract oil from algae, then oil extraction is achieved, but hazardous waste is produced and energy consumption increases
Solution Approach 1:
The patent replaces chemical solvent extraction with an electro-physical separation method. By using electric fields to manipulate the phase behavior and separation of oil and water, the system achieves oil recovery without introducing hazardous chemicals, thereby eliminating solvent waste and reducing energy consumption.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The electrolytic filtration process effectively separates suspended particles from the solution, reducing energy input and extending filter medium lifespan, while minimizing water electrolysis and hazardous waste production.
Implementation Method 1
The electric field comprises a current or voltage controlled field to effect movement of the particulates away from the filter medium
Implementation Method 2
The electrolytic apparatus may direct an aqueous particulate suspension between an electrode pair, and apply a current or voltage across the electrode pair to effect movement of the particulates
Data Source
AI summary
An apparatus for the concentration of suspended algae particles in an aqueous solution. The apparatus includes an electrolytic cell containing at least an anode and a cathode, and a filter. The electrolytic cell receives a solution containing suspended algae particles therein. A power supply is near the filter. A zone of depleted suspended algae particles is near the filter, formed under the influence of an applied electric field from the power supply.