Category : Testing
Here at Dragon Sorb, we are constantly doing cocopeat testing to make sure that it is of the highest quality. Often (well, sometimes) customers ask us how we do are testing so we thought we would show you. Not exactly exciting, we know, but interesting in its own little way.
As this is the first in the series, we’re going to start with the most obvious: cocopeat and sawdust. It’s worth mentioning before we start that some of you might be asking yourselves why we don’t just use sawdust itself. It’s a good question. Basically, the problem with sawdust is that it sucks up water as well as oil. Later on, we will explain why this is such a problem.
Additionally, we’d like to apologise for some of the camera work. Fortunately for all concerned, we are much better at making absorbent for oil spills than we are at taking pictures.
The Purpose of the Cocopeat Testing
To test the absorbency of two different products with oil and seawater: Dragon Sorb’s Cocopeat and sawdust.
Materials Used for Cocopeat Testing
The basic process for testing is the same. We started with 330 grams of saltwater, poured in 100 grams of diesel oil, and then started sprinkling the sawdust or cocopeat on the surface. We continued until all the oil (as far as we could tell) had been absorbed. We then weighed everything, and then subtracted the original weight of the container, salt water and diesel. The final number was the amount of of sawdust or cocopeat used.
Sawdust Testing with Saltwater and Diesel Oil
Sawdust (left) and Salt Water with Diesel Oil (right)
Sawdust Sprinkled Over Salt Water and Diesel Oil
View on the Top During the Absorption Process
The above picture shows the cocpeat during the absorption process. The sawdust settles in the centre, under the diesel oil and above the saltwater. If you remember, we spoke about the problem of using sawdust earlier, and this shows us where the problem occurs in the process. The sawdust absorbs oil from above and also absorbs water from below.
Filtering Oil, Salt Water, and Sawdust
When the sawdust becomes solid we filtered the oil, salt water and sawdust. What goes through the filter is the salt water and remaining oil. What is left in the filter is the sawdust and the absorbed oil and salt water.
Filtered Residual Water
The filtered water is evidently brown. This shows that there is still oil remaining and that while the sawdust has absorbed some of the diesel, it hasn’t done as well as might have been expected.
Let’s move on to our competitor’s cocopeat testing.