Bioremediation is a sustainable waste management technique that employs biological agents — typically bacteria — to metabolise and degrade environmental contaminants into non-toxic substances like water and carbon dioxide.

Essentially, the process "copies nature" by using microbes that have evolved over millions of years to break down organic pollutants. In industrial applications, such as those used by Bemical, this natural process is "boosted" by introducing scientifically formulated products containing billions of CFU/g (Colony Forming Units) to degrade toxins in record time.

The microbes used in bioremediation treat pollutants as a substrate or nutrient source. Depending on the environment and the specific waste stream, the process generally follows one of two pathways:

• Aerobic Decomposition: Occurs in the presence of oxygen, resulting in end products such as H₂O, CO₂, and various sulphates or phosphates.
• Anaerobic Decomposition: Occurs in environments lacking oxygen, breaking contaminants down into substances like methane (CH₄), hydrogen sulphide (H₂S), and carbon dioxide (CO₂) .

Bioremediation is highly versatile and can be applied in two primary ways depending on site conditions:

• In-Situ: The treatment happens directly at the site of contamination (e.g., treating groundwater or soil without moving it).
• Ex-Situ: Contaminated material is removed from its original location (such as soil excavated into bio-piles) to be treated in a controlled environment.

This method is particularly effective for treating hydrocarbons (petroleum, diesel, oils), sewage, and fats, oils, and grease (FOG), often providing a "Zero Waste to Landfill" alternative to traditional disposal.

Bioremediation is the metabolic degradation of pollutants by biological agents, primarily bacteria, which use the contaminants as a substrate or nutrient source. At Bemical, we "copy nature" by using these organic processes but introduce significantly more power — billions of Colony Forming Units (CFU/g) — to handle high levels of contamination that nature cannot manage alone.

The breakdown of high-molecular contaminants like carbohydrates, fats, and proteins occurs through two main routes depending on the availability of oxygen.

Aerobic Decomposition (With Oxygen)

This is the preferred route for surface spills and aerated water. The process involves:

• Hydrolysis: Breaking down complex contaminants into fragments and soluble polymers.
• Conversion: Microbes further process these into glucose, amino acids, and fatty acids.
• The Final Cycle: Through the Tricarboxylic Acid Cycle, pollutants are rendered into harmless H₂O and CO₂.

Anaerobic Decomposition (Without Oxygen)

Used in deep soil or closed systems where free oxygen is unavailable.

• Contaminants enter an acidification phase, producing organic acids and alcohols.
• The final methanogenic phase converts these into methane (CH₄), carbon dioxide (CO₂), and hydrogen sulphide (H₂S).

For our bacteria to perform at record speeds, we manage the following environmental parameters on-site:

While traditional methods can take months, Bemical’s "Secret Sauce" formulations like Soilbac and Green Lock achieve total reduction in under 4 weeks.

In controlled trials at the University of Pretoria, our custom blends showed significantly higher optical density (biomass growth) compared to standard individual strains, ensuring a faster, more reliable clean-up.

Where bioremediation is the answer for organic pollutants, S/S is the internationally recognised gold standard for treating the balance of hazardous waste streams. Our process physically binds and chemically reacts with contaminants to reduce their mobility, ensuring they no longer pose a risk to the surrounding environment.

• On-Site Treatment: We eliminate the high costs and risks associated with transporting hazardous materials by treating waste directly at your facility.
• Zero Waste to Landfill: By converting waste into a non-hazardous end product, we help you bypass rising landfill costs and meet strict environmental legislation.
• Material Reuse: Our treated end product is engineered to meet specific strength requirements, allowing it to be reused as backfill or sub-base for construction.
• Rapid Curing: Our specialised reagents allow for a curing time of just 4 days, and unlike traditional methods, our process is not influenced by weather conditions.

The following table outlines the technical efficiency and processing rates of our S/S service:

Bemical has a proven track record in complex S/S projects, including:

• Property Regeneration: Treating 28,000 tonnes of heavy-metal contaminated soil in 6 weeks.
• Railway Sidings: Managing 15,000 m³ of soil contaminated with diesel and heavy metals, saving R423/m³ on imported aggregate.

Fats, oil, and grease (FOG) are a significant burden on industrial kitchens, food processing plants, and municipal sewage systems. Traditional management relies on frequent, costly physical removals and "pump-outs." Bemical provides a natural, industry-leading alternative that degrades FOG at the source.

By using natural products with billions of CFU/g (Colony Forming Units), we provide massive power to break down the long-chain fatty acids that lead to blockages and foul odours.

• Massive Cost Reduction: Significantly reduce the frequency of grease trap pump-outs.
• Sludge Reduction: Actively degrades solid accumulations within the trap or system.
• Odour Removal: Eliminates the root cause of bad smells through biological digestion rather than masking them.
• Downstream Benefits: Reduced FOG in the effluent water prevents "fatbergs" and reduces the load on local Wastewater Treatment Plants (WWTP).

This table highlights how Bemical’s biological approach compares to traditional maintenance methods.

Our FOG solutions work seamlessly with our Sewage Treatment and Degreaser lines. For example, our Green Machine degreaser is food-safe and "quick-break," ensuring that cleaning processes on the floor do not interfere with the biological activity inside your grease trap.