At the request of American researchers, GREENPOWER conducted a series of Chlorella vulgaris pyrolysis experiments as part of an international biochar research and development agreement. The objective was to evaluate the viability of producing biochar from Chlorella vulgaris using lab-scale pyrolysis equipment and to assess its potential for industrial applications.
🌱 Why Chlorella Vulgaris?
Chlorella vulgaris is a high-productivity, single-celled microalga with low cultivation costs. It offers multiple environmental benefits — it absorbs CO₂, purifies water, and does not compete with arable land. These traits make it an excellent candidate for Chlorella biochar production and other carbon-negative technologies. Its biomass is rich in protein and chlorophyll and has already been tested in a range of sustainable applications. Now, the spotlight is on its conversion into algae biochar for use in renewable energy, agriculture, and environmental remediation.
🔬 Method and Analysis Results
- Feedstock: 15 kg of dried Chlorella vulgaris microalgae powder
- Packaging: Foil bags + cardboard drums
- Process: Performed using GreenPower’s lab-scale pyrolysis reactor, with parameters specified in the R&D protocol for this microalgae biochar experiment
Certified Feedstock Composition:
| Parameter | Value |
| Protein | ≥ 50% (actual 56.3%) |
| Chlorophyll | ≥ 1% (actual 1.5%) |
| Moisture | ≤ 7% (actual 3.9%) |
| Ash | ≤ 8% (actual 4.7%) |
| Lead (Pb) | ≤ 1 ppm (0.10 ppm) |
| Arsenic (As) | ≤ 1 ppm (0.17 ppm) |
| Cadmium (Cd) | 0.02 ppm |
| Mercury (Hg) | 0.01 ppm |
| Total Bacteria | ≤ 100,000 cfu/g (10,000) |
| Coliforms | Not detected |
| Yeast/Mold | ≤ 1,000 (less than 90) |
🔥 Why This Matters for GREENPOWER
- Chlorella biochar yield demonstrated promising carbon content and structural properties for renewable energy use.
- The Chlorella biochar can serve as a sustainable heat source or as a precursor for biogas and hydrogen production.
- Its sorptive surface and mineral profile support use in Chlorella biochar applications such as water filtration and soil amendment.
- The success of this Chlorella vulgaris biochar experiment reinforces GreenPower’s vision to work with advanced biochar from algae and microalgae feedstocks.
🔭 GREENPOWER’s Future Perspective
With the successful completion of this Chlorella vulgaris biochar research, GreenPower plans to:
- Conduct follow-up trials to optimize Chlorella biochar yield based on temperature, residence time, and heating rate
- Investigate the role of biochar from Chlorella vulgaris in environmental cleanup, particularly as a natural adsorbent
- Explore new industrial and agricultural Chlorella biochar applications, including integration into circular economy models
Conclusion: The potential of Chlorella biochar production goes far beyond energy. It supports regenerative agriculture, clean water access, and CO₂ removal. GreenPower remains committed to advancing this technology through real-world experimentation and global collaboration.
