What is the PHA ?
Polyhydroxyalkanoates (PHA for short) are polymers produced by certain bacteria. microorganisms store this material in the form of granules as an energy reserve. This reaction is caused by nutrient stress, particularly when nitrogen or phosphorus is limited. PHAs are biodegradable materials under both natural and industrial conditions. They therefore offer a sustainable solution to the environmental problems associated with conventional plastics.
The importance of PHA production for the industry
PHA has many industrial applications. They represent a challenge for those wishing to reduce their carbon footprint. Dependence on petroleum-based plastics is becoming increasingly problematic. PHA offers a renewable, biodegradable alternative that fits into a circular economy. By 2030, European Union directives on single-use plastics will push manufacturers to adopt more environmentally-friendly materials. Let’s move forward…
The PHA Production Process in 3 stages
PHA production is based on a biotechnological process involving bacterial fermentation.
#1 Preparing the Substrate for Fermentation
Bacteria produce PHAs by metabolising various carbon sources (sugar cane, maize or vegetable oils). Substrate selection is crucial, as it influences the quality and final cost of the product.
#2 Fermentation and Bacterial Growth
The microorganisms are grown in bioreactors under optimised conditions of temperature, pH and aeration. When nutrient conditions change, the bacteria begin to accumulate PHAs as an energy reserve. This fermentation phase must be precisely controlled to maximise production
#3 Extraction and Purification of PHAs
Once fermentation is complete, the PHAs are extracted from the bacterial cells. Extraction often uses solvents or enzymatic techniques. Purification produces high-quality polymers that meet the requirements of industry.
Innovative Technologies in PHA Production
New processes are emerging to improve efficiency and reduce production costs.
Use of Organic Waste
Some producers use agricultural or agro-industrial waste as a source of carbon. This strategy reduces costs while minimising the environmental impact of production. It’s a good bet. This circular approach is less expensive and contributes to more respectful waste management. Nothing is lost, everything is transformed.
Genetic Modification of Microorganisms
Science is making progress. Genetic modifications have made it possible to create bacteria that are more efficient at producing PHA. These optimised micro-organisms can metabolise a wider variety of substrates, increasing production yields. Profitability and speed are the order of the day.
Continuous Fermentation Processes
Continuous fermentation processes enable PHA production to be maintained over long periods. This method improves productivity compared with conventional batch fermentations, reducing operational costs. In larger quantities, the use of PHAs becomes more popular and more accessible.
PHA production: Benefits for Industry
Total Biodegradability of PHAs
Unlike traditional plastics, PHAs break down naturally in all environments. This is their greatest advantage. They require no specialised infrastructure, and all types of composting are possible, reducing the ecological footprint. No sorting, no transport, no energy required.
PHA = Renewable Origin
PHAs are made from renewable raw materials. In other words? No dependence on fossil fuels. The carbon footprint of finished products is reduced, as are the energy-intensive and polluting raw materials.
Properties of PHA
PHAs offer UV and solvent resistance, gas barrier properties and variable flexibility. They can replace conventional plastics in a wide range of applications, from organic packaging to medical devices. Oh yes, they’re biocompatible…
Future Opportunities for Manufacturers
The recently adopted European Packaging Regulation (PPWR) imposes strict recycling targets. By 2025, 60% of products must be recycled, rising to 80% by 2035. PHA is an effective solution for meeting these requirements, thanks to its recyclable and compostable properties. So it’s vital to turn to these innovative materials to anticipate tomorrow’s constraints!
PHA Production: Why Work with PHA Sourcing?
If you want to integrate PHA into your production chain, we’re the company for you. We offer tailor-made solutions, adapted to the needs of each industrial sector. Technical expertise, adaptability and competitiveness are our watchwords. When you choose PHA Sourcing as your partner, you benefit from assistance throughout your project, from the design phase right through to industrial implementation.
The production of PHAs represents a strategic opportunity for manufacturers. These bioplastics offer sustainable solutions to environmental and regulatory challenges. Ready to use a revolutionary material? Our teams are available to discuss your project!
