Microwave Irradiation for Microalgae Oil Extraction

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current methods for producing oil-based materials using oil-based material-producing microorganisms, such as microalgae, are complex and require high energy inputs, making them inefficient for large-scale production.

Innovation Solution

A method involving microwave irradiation of oil-based material-producing microorganisms in the presence of a microwave-responsive material, which concentrates the electric and magnetic fields to break cell walls, allowing for the collection of the oil-based material, and an apparatus comprising a reactor and microwave generator for efficient microwave irradiation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If conventional methods are used for producing oil-based materials using microalgae, then the production process can be maintained with existing technology, but the process becomes complex and requires high energy inputs

Engineering Contradiction:

Improveproduction process simplicityVSAvoidenergy input

Core Design Contradiction:

Ease of manufactureVSUse of energy by stationary object

Solution Approach 1:

The patent replaces conventional mechanical disruption methods (such as homogenization, ultrasonic treatment, or chemical dissolution) with microwave irradiation. The microwave generator emits electromagnetic waves that directly interact with the microalgae cells, causing internal heating and cell wall rupture through dielectric heating and cavitation effects, thereby eliminating the need for complex mechanical processing equipment and high energy consumption mechanical operations.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent utilizes microwave irradiation to change the physical and chemical parameters within the microalgae cells. The microwave energy causes rapid temperature increase, pressure changes, and electromagnetic field effects that lead to cell wall breakdown and oil release. This parameter change approach transforms the extraction process from a multi-step mechanical-chemical procedure into a single-step physical process controlled by microwave parameters (power, time, frequency).

Inventive Principle:

Principle #35Parameter changes

2Productivity

If microwave irradiation is applied to break cell walls, then the production process is simplified and energy requirements are reduced, but new equipment and methods must be implemented

Engineering Contradiction:

Improveproduction efficiencyVSAvoidequipment complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical disruption equipment (homogenizers, ultrasonic processors, high-pressure homogenizers) with a relatively simple microwave generator and irradiation chamber. The microwave system consists of basic electromagnetic radiation generation and delivery components, which are easier to implement and operate than the sophisticated mechanical systems previously required for cell disruption and oil extraction.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Manufacturing precision

If microwave responsive material is used to concentrate electric and magnetic fields, then cell wall breaking efficiency is improved, but additional materials and process steps are required

Engineering Contradiction:

Improvecell wall breaking efficiencyVSAvoidprocess complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent introduces microwave responsive material as an intermediary substance that mediates the interaction between microwave radiation and microalgae cells. This material absorbs and concentrates microwave energy, creating localized hot spots and enhancing the electromagnetic field intensity at the cell walls. The intermediary material acts as an energy amplifier, improving cell disruption efficiency without requiring direct high-power microwave irradiation of the entire sample volume.

Inventive Principle:

Principle #24Intermediary (Mediator)

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

This approach simplifies the production process, reduces energy requirements, and efficiently collects oil-based materials from microorganisms, enabling cost-effective and scalable production.

Implementation Method 1

a microwave irradiation step of irradiating oil-based material-producing microorganisms with microwaves (e.g., electromagnetic waves)

Methodology Applied

Scientific EffectMicrowave irradiation: Microwave Radiation

Implementation Method 2

the electric field and the magnetic field of microwaves are concentrated on the microwave responsive material. As a result, for example, at least part of the cell walls of the oil-based material-producing microorganisms that are present near the microwave responsive material can be broken

Methodology Applied

Scientific EffectDielectric heating: Dielectric Heating

Data Source

PatentUS10457930B2Oil-based material-producing method and oil-based material-producing apparatus

Publication Date: 2019.10.29 MICROWAVE CHEM

AI summary

An oil-based material-producing method includes a microwave irradiation step of irradiating oil-based material-producing microorganisms with microwaves. The oil-based material-producing method may also include a collecting step of collecting an oil-based material produced by the oil-based material-producing microorganisms after the microwave irradiation step.