Hydrogen peroxide can be used together with either plain white vinegar of apple cider vinegar to kill harmful bacteria such as all Salmonella, E. coli and Shigella effectively on foods, vegetables and households and kitchen as well.
As reported on www.healingdaily.com, at first prepare 3% hydrogen peroxide (food grade) in a clean spray bottle and place vinegar in another clean spray immediately on the foods, vegetables, any surface or households. To apply the two substances, just spray hydrogen peroxide at first and then followed by vinegar or vice versa. This method is more effective than when we use hydrogen peroxide or vinegar alone, combined together in one spray bottle.
The hydrogen peroxide and vinegar sprays can be used to clean residues (pesticides) off fruits and vegetables, clean and sanitize counters, food preparation surface (including wooden cutting board) and clean kitchen. By using these two products, we will be able to avoid using harmful toxic chemical cleaners.
Selecting compatible material for hydrogen peroxide facilities is the first step to be taken into consideration when you are in designing phase of the facilities. Because as I explained in my previous article “Factors That Affect Hydrogen Peroxide Decomposition”, compatible construction materials of pipe, pump and tank will keep hydrogen peroxide concentration stable.
Hydrogen peroxide handling facilities at least consists of pipe, hose, pump, valve, gasket (packing) and tank. In this post I just want to show you the best materials with which I have best experiences and good results, especially for long time storage.
- Pipe: choose stainless steel SUS 316 or SUS 304L or equivalent, TIG welding with Argon as the shielding gas.
- Hose: use reinforced-vinyl hose.
- Pump: choose material same as pipe material for hydrogen peroxide contacting parts, such as casing, impeller, etc.
- Valve: stainless steel SUS 316 or SUS 304L or equivalent, ball valve with disc hole, and valve seat made of Teflon.
- Gasket (packing): Teflon or viton.
- Tank: stainless steel SUS 304L or equivalent, TIG welding with Argon as the shielding gas.
For pipe, valve and tank required to be chemical cleaned and passivated before being filled by hydrogen peroxide. Later, in the next post I will explain about chemical cleaning procedure for hydrogen peroxide facilities.
Decomposition reaction of hydrogen peroxide is very vital factor that is needed to be understood clearly. Decomposition reaction does not only affect hydrogen peroxide quality (concentration), but also determine the safety.
As I explained in my previous post, about factors that affect hydrogen peroxide decomposition, one of those factors is the existence of heavy metal (as catalyst) in hydrogen peroxide solution. To help you get deep understanding about the process, a video on hydrogen peroxide decomposition will give you a clear visualization.
Below, I attach a video that shows hydrogen peroxide decomposition process releasing water, oxygen gas and heat.
I strongly recommend you to give enough attention to this post, because if you fail to avoid decomposition reaction to occur, you will not only lose your hydrogen peroxide (concentration decreases), but you may be exposed to some hazards. Remember, beside water hydrogen peroxide also releases oxygen and heat when decomposes.
Oxygen will develop high pressure in piping or vessel even it can introduce over pressure condition. Heat from the reaction will expose high temperature. Both sources of hazards if not treated properly may cause severe damage to equipments and threaten human safety.
Below are factors that affect hydrogen peroxide decomposition reaction. Read each point carefully.
- The presence of heavy metal (catalyst) such as Palladium (Pd), Platinum (Pt), Ferro (Fe), etc.
- Dirt and dust. Always keep clean area where hydrogen peroxide is stored, includes all handling facilities.
- Temperature. According to research results, every 10oC of temperature increase (in the range of 50~70oC) will cause the rate of decomposition reaction increases by factor 2.
- Using incompatible materials for its packaging material.
- pH. Increase in pH value of hydrogen peroxide solution will obviously increase decomposition reaction.
- The surface of storage containers. Rough surface or the presence of minutes scratches on shell side of the tank aids the decomposition process.
The easiest thing to do to avoid hydrogen peroxide decomposition is by separating hydrogen peroxide in the plant site from the incompatible materials as mentioned above.
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