Name: BioRas® TAN
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From mandatory regulatory restarts to decontamination protocols, every biofilter restart means three to five weeks lost production time. That eats into the profitability of your operations. BioRas®TAN cuts the time it takes to reach target biomass and feed rate in restarts by up to 33%. That means far less restart-related downtime, more production cycles and higher profitability for your facility.

Faster restart, less downtime

TheBioRas®TAN precision dosing calculator makes planning easier.Simply give us yourunique system parametersand we’ll give youtailored dosing recommendations.

Easier planning

The specially-selected strains of nitrifying bacteria in BioRas®TAN are cultured in optimal conditions for the highest possible product purity. That means they pose no biosecurity risk to the facility.

Increased biosecurity

Biofilter start-up should take between 8 and 16 weeks, but it’s an unpredictable process. That’s a challenge when you’re planning for the arrival of fish stocks. With BioRas®TAN you get more reliable, predictable results. You also cut the time it takes to move to target biomass and feed rate,givingyou more flexibility in your schedule and helpingyou avoid premature introduction of fish. The end result is improved production performance in year 1 of new operations and a higher chance of long-term success.

More predictable startup

Contact us for more information

BioRas® TAN helps ensure your recirculating aquaculture system’s biofilter is ready when planned and moves more rapidly to target biomass and feed-rate. That gives you more flexibility and acceleration of new biomedia startup and can cut restart-related downtime after disinfection by up to 33%. 

Available in 4.5L.

Faster restart, less downtime From mandatory regulatory restarts to decontamination protocols, every biofilter restart means three to five weeks lost production time. That eats into the profitability of your operations. BioRas®TAN cuts the time it takes to reach target biomass and feed rate in restarts by up to 33%. That means far less restart-related downtime, more production cycles and higher profitability for your facility.
Easier planning TheBioRas®TAN precision dosing calculator makes planning easier.Simply give us yourunique system parametersand we’ll give youtailored dosing recommendations.
Increased biosecurity The specially-selected strains of nitrifying bacteria in BioRas®TAN are cultured in optimal conditions for the highest possible product purity. That means they pose no biosecurity risk to the facility.
More predictable startup Biofilter start-up should take between 8 and 16 weeks, but it’s an unpredictable process. That’s a challenge when you’re planning for the arrival of fish stocks. With BioRas®TAN you get more reliable, predictable results. You also cut the time it takes to move to target biomass and feed rate,givingyou more flexibility in your schedule and helpingyou avoid premature introduction of fish. The end result is improved production performance in year 1 of new operations and a higher chance of long-term success.

Benefits

Biofilters are the heart of every recirculating aquaculture system. Their nitrifying bacteria convert ammonia and nitrite excreted in the system to non-toxic nitrate. But the slow, unpredictable growth and sensitivity of these bacteria can cause problems in biofilter startups and restarts. BioRas® TAN is a blend of specially-selected strains of nitrifying bacteria. It delivers faster, more predictable results.

Details

This product contains enzymes. While enzymes are safe to use in consumer applications, they need correct handling in working environments to ensure workers’ safety.

Indeed, repeated inhalation of enzyme dust or aerosols resulting from improper handling may induce sensitization and may cause allergic type 1 reactions in sensitized individuals.

Please follow the precautionary handling recommendations below:

<article class="align-right media media--type-image media--view-mode-ckeditor-medium"><div class="field field--name-field-media-image field--type-image field--label-hidden field__item"> <img src="https://cdn.novozymes.com/sites/default/files/styles/small_proportional/public/image/2023-03/safe_handling_icon.png.webp?itok=mCNXGSFp" width="120" height="121" alt="safe handling icon" loading="lazy" typeof="foaf:Image" class="image-style-small-proportional" /></div>
 
 </article><ul><li>Avoid breathing dust/fume/gas/mist/vapors/spray</li>
	<li>Avoid contact with eyes, skin, or clothing</li>
	<li>In case of inadequate ventilation wear respiratory protection</li>
	<li>IF INHALED: Remove person to fresh air and keep comfortable for breathing</li>
	<li>If experiencing respiratory symptoms: Call a POISON CENTER or a doctor</li>
	<li>Store in a dry place. Store in a closed container</li>
	<li>Dispose of contents/containers in accordance with local regulations</li>
</ul>For more safety information, please watch the entire series of <a href="https://www.novozymes.tv/channel/10795880/safety-material" target="_blank">safety videos</a>.

Safe handling

Product features, details and benefits

Liquid

Multi-microbe blend

BioRas® Base-2

BioRas® TAN

Only dose once disinfection is completed. Take BioRas® TAN from cold storage and allow it to reach operational temperature prior to dosing. Dose it into the biofilter inlet. 

Refrigerate BioRas® TAN upon receipt and throughout the period of use. Do not allow the product to freeze. Avoid excessive skin contact. Wash hands thoroughly with warm, soapy water after contact. Avoid contact with eyes.

Dosing & storage

BioRas® TAN reached &lt;0.5mg/L TAN levels in 10 days: 33% faster than control (15 days).

<article class="align-center media media--type-image media--view-mode-ckeditor-full-width"><div class="field field--name-field-media-image field--type-image field--label-hidden field__item"> <img src="https://cdn.novozymes.com/sites/default/files/styles/large_proportional/public/image/2023-03/muqz1J9vKaEWZ.png.webp?itok=AotXzdmH" width="1224" height="487" alt="bioras tan graph 1" loading="lazy" typeof="foaf:Image" class="image-style-large-proportional" /></div>
 
 </article>After the addition of 20mg/L of ammonium, BioRas® TAN significantly reduced nitrite spikes in comparison with control. 

<article class="align-center media media--type-image media--view-mode-ckeditor-full-width"><div class="field field--name-field-media-image field--type-image field--label-hidden field__item"> <img src="https://cdn.novozymes.com/sites/default/files/styles/large_proportional/public/image/2023-03/KZCqtek38TiVF.png.webp?itok=VvRqhdmc" width="1224" height="492" alt="bioras tan graph 2" loading="lazy" typeof="foaf:Image" class="image-style-large-proportional" /></div>
 
 </article> Trials Conducted CRO in Chile in 6m3 system/1.8m3 biofilter, Conditions: 13 °C/ 12ppt salinity. Biofiliter disinfected by soaking in 250 mg/L paracetic acid and 50% NaOH solution for 12h each. Recovery of nitrification was monitored for 30 days post-disinfection. NH4OH was fed when TAN readings reached &lt;0.4mgL,  System was challenged at day 26 with a 20mg/L spike of ammonium (red line).

Efficacy of BioRas ® TAN in biofilter restart: Get to desired TAN and reduce risk of nitrite spikes 

Buildup of ammonia and nitrite in RAS impacts fish health. Through nitrification, bacteria in the biofilter break ammonia and nitrite down into non-toxic nitrate.    

Ammonia and nitrite excreted in recirculating aquaculture systems (RAS) can build up to toxic levels. That creates stress on fish stocks and ultimately puts their health at risk. That’s why the nitrifying bacteria in RAS biofilters are so crucial to overall productivity in RAS aquaculture. They break down ammonia and nitrite to non-toxic nitrate in a two-step process known as nitrification. Optimal pH for nitrification is 7.0 to 8.5.  

In the first step, ammonia-oxidizing bacteria (AOB) oxidize ammonium ions NH4+ to nitrite NO2-.

In the second step, nitrite-oxidizing bacteria (NOB) oxidize nitrite to nitrate NO3-. That prevents the built-up of toxic ammonia and nitrite for improved fish health and overall production.

How nitrifying bacteria convert ammonia and nitrite to non-toxic nitrate in RAS aquaculture

How to use

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Enzymes and microbes for recirculating aquaculture systems

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