Category Archives: Chemical

Hydrogen Sulfide Removal from Biogas – Know Issues Related to H2S

In biogas there is the presence of hydrogen sulfide is there. As hydrogen sulfide is poisonous, corrosive, and flammable its removal is very important otherwise it might be dangerous. H2S is the formula of this chemical component. This gas is not good for the environment and causes a lot of issues when found in the air. Moreover, it smells is very bad and is similar to a rotten egg smell. Its existence can be known by the smell itself. If you talk about its color it does not have any color. Based on numerous factors the concentration might vary.


Reasons for removal of hydrogen sulfide


There are several reasons because of which its removal from biogas is very important. It is a highly toxic gas and not good for health at all. Its smell is unbearable and it also irritates your eyes, nose, throat, and lungs and might cause severe damage to it. Sometimes it might be so dangerous that the entire breathing of the person might come to a halt if it is inhaled. Due to issues in breathing it might lead to the death of the person. However, if timely treatment in form of first aid is given on time might save the life of the person.


Process of removing it


Many techniques are adopted to remove this highly dangerous gas. When this gas is burnt it causes sulfur emissions in the air which is dangerous. It is thus very important to remove this harmful gas completely if it has to be used in combustion engines, turbines, and fuel cells. There might be a busting of types of equipment or damage might be caused to the types of equipment if it is not removed. So, for overall safety, it is a must to remove it.


Methods that can be used to remove it are as below:


  • Activated carbon
  • Water scrubbing
  • Iron sponge
  • Iron oxide pellets
  • NaOH scrubbing


Any of these methods can be used to effectively remove H2S from biogas. Try to compare these methods and see which one you will like to use. Keep in mind numerous factors such as adsorption capacity, labor requirements, cost of transportation of waste, vacuum required for emptying the filters.


Select the Right Company


You will come across many companies that are doing work of removing hydrogen sulfide removal from biogas. Take your time and try to look for a company that has at least five years of experience. Try to figure this on your own and select a reliable company to get this removal done systematically.


Worker and Employer – Responsibility


Proper training should be imparted to the workers and supervisors by the employee. This training needs to cover all the important things related to the fieldwork. The employer can keep another training section in case required. Moreover, it also becomes the responsibility of every worker to work keeping the guidelines and instructions in mind. Any worker, not following norms might be putting himself in danger and might risk his life. It is only after all the precautions are taken that work can be started.

Chemical Products Industries Also Offers Following Services:

Non Toxic Surfactant

Scavenger Chemical

Hydrogen Sulfide Adsorbent

Surfactant Chemicals

Contact US:

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

Different Usage of Scavenger Chemicals

Before discussing the different usage of scavenger chemicals you must know what these chemicals are.

Introduction with scavenger chemicals

The chemical which can be mixed to a combination to deactivate or remove unwanted and impure reacting products like oxygen etc. to ensure the absence of unfavorable reactions are known as scavenger chemicals.

Usage of scavenger chemicals

Scavenger chemicals can be used in a wide range of applications like:

  • Hydroxyl radical is the most commonly used and short-lived scavenger chemical in atmospheric chemistry. In the environment, it is produced through a photolytic process. This oxidant is most important for removing methane, carbon monoxide, and hydrocarbons like hydrogen sulfide, sulfur dioxide, and other impurities from the environment.
  • Methane gas can be used as a gas that acts as a scavenger for separating fluorine atoms from a molecular laser isotope
  • Ascorbic acid and Hydrazine can be used as an oxygen scavenger to slow down corrosion.
  • Naringenin and Tocopherol are scavenger free radicals of bioactive nature that work as antioxidants. The synthetic counterparts of these scavengers are known as synthetic catalytic scavengers.
  • The compounds of Organotin are used as scavenger containing hydrochloric acid in manufacturing polymer.
  • Glutathione found in the body is a scavenger that oxidizes peroxides and free radicals. It also attacks dangerous exogenous toxins alkylating electrophiles, produced during the process of metabolism as a thiol nucleophile.
  • The chemicals that absorb oxygen are known as oxygen scavengers. They are placed inside the modified packs of products to improve the looks and extend the life of products packed in them as self-adhesive labels or small sachets. The iron powder packed in these labels or sachets oxidizes by absorbing the oxygen remaining in the pack if any. They also help in maintaining the safety of the product for a long time. Various types of oxygen scavengers are used these days in various types of applications.

Usage of oxygen scavengers

Oxygen scavengers are typically used in:

  • Vitamins and pharmaceuticals to prevent oxidation of vitamins like A, C, and E and extend the life of pharmaceuticals
  • The wine industry normally uses Potassium Metabisulfite not only to separate the wine from oxygen by providing a coat of gas but to scavenge oxygen also.
  • Medical devices and diagnostic kits
  • Rancidification of Foods like Snacks and nuts, Dry food with whole fat, smoked, cured, and processed meats, seasonings and spices, dairy products and cheeses, grain items and flour, etc.

Oxygen scavengers also help in:

  • Retaining the flavor of fresh-roasted nuts and coffee
  • Preventing oxidation of oleoresins present in the seasoned foods and spices
  • Slowing down the growth of mold in fizzed products from dairy and natural cheeses
  • Delaying the browning of some vegetables and fruits without any enzymatic reaction
  • Slowing down the condensation and oxidation of the red pigment of almost all types of sauces and berries
  • Providing an environment in museums free from pests by absorbing oxygen.

Thus, scavenger chemicals can be used in a wide range of applications mainly for preserving things by deoxidizing them.

 Chemical Products Industries Also Offers Following Services :

 Non Toxic Surfactant
Surfactant Chemicals
Degreaser Formulation
MMR Cleaner
Hydrogen Sulfide Scavengers
h2s Removal From Biogas

Contact US:

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

Information On Removing Mercaptan

If you are keen on finding the right information and knowledge about the various ways by which sweetening or removal of mercaptan from hydrocarbon fractions, then it is quite likely that you will find this article interesting and informative. This process is referred to as sweetening and it is used for LPG sweetening. As far as LPG sweetening is concerned, alkaline extractive techniques are used. They not only remove alkaline substances but also are helpful in mercaptan removal from natural gas. This is followed by caustic regeneration of the various alkali compounds. This also leads to a state that is referred to as LPG desulfurization.

Understanding Kerosene Fraction Sweetening

One needs to have some basic understanding of kerosene fraction sweetening also. This process might be alkaline in nature. However, it moves directly into a hydrocarbon phase but there is a presence of atmospheric oxygen, phthalocyanine catalyst, and of course alkali. The sweetening takes place because of certain changes. The changes lead to oxidation of the various corrosive mercaptan substances. These remain dissolved in kerosene and are in a state of inert disulfides. When the right catalytic oxidative mercaptan removal is put in place, not only mercaptan is removed, it also helps in odor removal. However, this is done without making any changes to the total sulfur content infraction.

What Is Hydrotreating Process

There is another process that is used for the removal of mercaptan from kerosene. This is considered quite popular because it perhaps is simple and cost-effective. This process is referred to as a hydrotreating process. It would be interesting to have a closer look at the same because of its simple process. During this process, certain sulfur compounds including mercaptan are converted and changed to hydrogen sulfide. This is done when mercaptan remains embedded at a high temperature and it also has other compounds such as nickel-molybdenum catalyst. In this process, hydrogen is also converted into hydrogen sulfide. Once this happens it is fed to the various Claus units. This results in the hydrogen running through a process of sulfide oxidation and it regenerates into elemental sulfur. As far as kerosene hydrotreatment is concerned, mercaptan removal has to also be accompanied by the removal of various sulfur compounds.

Gas Condensation And Light Oil Sweetening

With the use of LPG alkaline sweetening technology, it is also possible to go in for light oil sweetening. The main objective and purpose are to ensure total and complete removal of various dangerous substances. These include methyl that is corrosive in nature and also ethyl mercaptan. This is a byproduct of ordinary mercaptan. This process is extremely important because it helps and assists in condensing gas and makes oil light and therefore it becomes convenient as far as transportation is concerned.


The above are just a few of the various useful ways and means by which kerosene sweetening is possible and also it is possible to ensure that harmful mercaptan is removed whether it is from a liquid source, gaseous source or other sources. There are quite a few articles available on the internet that could come in handy as far as the ways and means of the use of removal of this substance is concerned.

Contact US:

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