Category Archives: Chemical

H2S Removal – All You Need to Know about The Procedures

H2S Removal – All You Need to Know about The Procedures
H2S Removal – All You Need to Know about The Procedures

We all know that Hydrogen sulfide or H2S is colourless, highly toxic, water-soluble, flammable and corrosive as well. For this, H2S is heavier than air. H2S has the foul odour or smell just like the rotten eggs. The separation of H2S from the gas stream is very much popular in the economic and environmental field. The removing of H2S is very much necessary. It follows so many methods such as catalytic conversion, biological treatment, precipitation, incineration, chemical scrubbing and chemical oxidation.

Biological treatment is cost-effective and beneficial but this method needs high capital investment than other types of dry-based methods.

Separate H2S through the electrochemical membrane

It is an advanced method to separate H2S from natural gas. In this process, H2S is removed from the natural gas by reduction to the H2 at the cathode and sulfide ion as well. The sulfide ion travels to the anode through the help of molten salt electrolyte in a ceramic matrix. In this process, no absorbents are used here. So, this is one of the economically attractive and overall cheap procedure. It does not need so much equipment than other conventional technologies.

Water treatment methods for removing H2S

  1. Sand filter and chlorination: You can install and use the chlorine feeder and sand filter for removing H2S. Hydrogen sulfide is dissolved by the use of chlorine and the formed or created insoluble sulphide particles can be removed by the use of a sand filter. You need to add 2mg/L chlorine in order to remove or dismiss 1mg/L H2S. You also need to install a small cartridge filter that contains the activated carbon and install it into the drinking tap in order to remove the bad taste of chlorine. This is a top-most alternative in order to remove H2S from water.
  2. Activated carbon filter and chlorination:For this method, you need to install the chlorine feeder and activated carbon filter as well. The H2S is dissolved by the use of chlorine and insoluble sulphide particles. These are removed by the help of an activated carbon filter. But the sand filter has the maximum flow rate of the service. This system is effective where there is only the presence of hydrogen sulphide and no traces of iron.

Aeration: This procedure is practised by spraying water into the well-ventilated tank. Through the spray, the H2S gas will be separate from the water and come out through the ventilation system. Aeration can remove the H2S but the chlorination procedure is still necessary and important.

Before choosing a method, you need to check both initial and operating cost. You also need to check the additional supplies and filters. You need to arrange additional water as well for emergency purposes. You can also go for the biological process. This method is cost-effective than other methods. For these removing processes, the trial is necessary and important to run the whole method safely. You have already known the procedures of hydrogen sulfide removal. So, as per your requirement, you can use any of these methods.

Chemical Products Industries Also Offers Following Services :

Hydrogen Sulfide Scavenger MSDS
Scavenger Chemical
What Is a Surfactant Cleaner

Contact US:

Chemical Products Industries, Inc.
Address: 7649 SW 34th St, Oklahoma City, OK
Phone: (800) 624-4356

How To Remove Mercaptan Odor

How To Remove Mercaptan Odor
How To Remove Mercaptan Odor

Also known as thiols, mercaptan is a harmless but highly pungent and foul-smelling gaseous substance. It is found in many industrial wastes and it also can be present in gaseous and liquid wastes. Some forms of mercaptan could be toxic but the toxic variants are found in very low concentrations. They can be easily detected because of the overpowering smell and even when they are present in small quantities the smell will be quite strong. However, they need to be present in significantly large quantities for them to be toxic and harmful for human beings and other living creatures. In most cases, they are not considered hazardous but are rather looked at a horrible nuisance because of its foul smell. You need to bear in mind that the odor detection levels are calculated in the order of PPB or parts per billion. Hence, this certainly would give you an idea as to how badly smelling is mercaptan. Hence it is quite obvious that there should be ways and means that could help to control mercaptan quite effectively. While there are many such ways, in this article we will be looking at the use of hydrogen peroxide for the purpose of effectively controlling mercaptan.

How Is It Effective

Hydrogen peroxide has been considered as a safe and reliable option for oxidizing thiols and that too across a range of temperatures and also in different concentrations. However, there could be a need for using catalysis for vigorous oxidation. Before going through the use of hydrogen peroxide for removing mercaptan, we should have some basic understanding of the sources of thiols or mercaptan. When the Kraft pulping process takes place, methanethiol is formed as a byproduct. This happens because of the demethylation of a substance known as lignin. Additionally, in various petroleum products thiols come into being because of the decomposition of various agents that are rich in sulfur. This happens during the refining process.

On the other hand, thiols do have their own areas of applications. They are used in ore floatation and are also used and are converted into byproducts in different types of chemical manufacturing processes. These include insecticides, pharmaceuticals, rubber additives, wetting agents and plastics. Thiols or mercaptan is formed when bacterial decomposition happens as far as organic materials are concerned. These are typically found in sewage treatment plants and also in the rendering industry.

Treatments Using Hydrogen Peroxide

Hydrogen peroxide can be useful for removing mercaptan from natural gas and liquids. This is done by a process of mild oxidation. This creates a reaction and it happens once the mixing has been done. The products and compounds, including hydrogen peroxide, are water-insoluble and they form an oily layer. Hence they can be readily separated and once the separation process has been done you have only trace amounts of odorous materials. However, the weight ratio of hydrogen peroxide to that of thiols has to be correct and only experts would be able to determine the ratio.

Hence at the end of the day, there is hardly any doubt that while mercaptan is an unavoidable byproduct in various areas, hydrogen peroxide could be easily used for completely eliminating the thiols.-

Contact US:

Chemical Products Industries, Inc.
Address: 7649 SW 34th St, Oklahoma City, OK
Phone: (800) 624-4356