No chance of microbial contamination in water-soluble cooling lubricant (wsCL/MWF)

The best, economical and environmentally friendly method for preventing microbial growth in the coolant lubricant in coolant maintenance stores is the electrolytic method.
In principle, only one electrolysis installation is required for a volume of a good 50 m3 of MWF - this applies to all types of MWF - even where the oil has been replaced by viscous water. The annual electricity consumption for medium-sized industry is only around 18 cent/ kWh. This results in annual costs of EUR 1,576.80 (1800 USD).
The use of biocides (e.g. variously substituted iso-thiazolinones) results in purchase costs of €2,200 to €2,400 per tonne as an annual requirement. The costs for free delivery, storage and dosing must be recognised separately as a surcharge. However, other chemical substances such as glutaraldehyde are not only potentially irritating to the skin and cause allergic reactions, but also the group of iso-thiazolinones.
With special electrodes, which also form oxygen species and thus prevent an anaerobic environment, short-lived radicals and H2O2 are formed, in addition to HOCl. HOCl is now commonly used in swimming pools but, unbeknown to many people, it is produced by the body's own cells. Hydrogen peroxide decomposes back into water and oxygen.
Electrolytic disinfection is an efficient and sustainable method, especially where continuous germ reduction is required. It combines chemical effectiveness with low operating costs compared to conventional methods.
Direct contact with DSA electrodes leads to combined damage through ROS, (ROS = reactive oxygen species) electrochemical oxidation and chlorinated by-products - a synergistic effect that kills (permanently inactivates) bacteria (microbes) more efficiently than chemical disinfection alone.
By introducing hydroxyl radicals (HO·) to the anode surface, reactive chlorine species are formed, including chlorine radicals (Cl·) and dichlorine radicals (Cl2·). The presence of Cl- leads to the formation of free chlorine, which reacts with water to form HOCl.
The further advantage is that no resistance formation occurs, as there is combined physical-chemical destruction instead of inhibition. Studies show that bacteria such as E. coli or Legionella are killed within seconds to minutes on contact with DSA electrodes (dimen-sionally stable anodes) - even without significant hypochlorite formation.
The combination of ROS and direct current flow also decomposes matrix structures (EPS), which makes the removal of biofilms - normally very difficult - possible.
In the presence of chloride in the water / emulsion, HOCl and HOCl- is formed, which penetrates the bacteria through the membrane and breaks down metabolic processes. Bacteria (microbes) that touch or adhere to the anode surface are oxidised by direct electron release and lead to irreversible damage to the cell structure - similar to electroporative effects.
The effect on bacteria can be described in detail as follows: ROS oxidise lipids and proteins of the cell envelope (membrane), resulting in a permeability disorder which further leads to cell lysis. There is also an inactivation of enzymes, e.g. ATPase and DNA damage due to radicals that attack the nucleic acids and block replication.
The electrochemical oxidation at the anodes (often a titanium matrix as a carrier with metal oxides of rare earths such as ruthenium/iridium) and other elements generate highly reactive oxygen species (ROS) and other radicals, such as hydroxyl radicals, which oxidatively destroy lighter living matter such as microbes when voltage is applied. Atomic oxygen and ozone also attack cell membranes and proteins.
As the formation of disinfectants in the disinfection of wsCL / synth. wsCL is regulated depending on the current strength, a balance is created between the consumption by microorganisms and the new formation of these substances. This means that power consumption is only required at intervals.
The power consumption of electrolytic disinfection units depends on the voltage and current strength, conductivity in mS/cm at °C, electrode surface - (S = I/A); current density) and is low. This emphasises the cost-effectiveness and environmental friendliness of this application. One, of the main reasons for dispensing with biocides is the easier electrolytic cleaning, as natural water without biocides has a lower COD value. Our groundwater levels fall and recycling the water for reuse is unavoidable.
Electrolytic disinfection for all wsCL/MWF therefore offers many advantages, as it is automatic, environmentally friendly and economical.

Bioway Consulting SL
C. / Tirant Lo Blanc 4, office 19
ES-03750 Pedreguer / Alicante - Spain
www.biowayconsulting.com
contact@biowayconsulting.com
Phone: 0034 965 030 786
Contact: Norbert Pautz - General Manager

Bioway has been in existence for almost 40 years and was founded as a sole proprietorship in Germany. A limited liability company was established in Switzerland with a subsidiary in Germany and later as a private limited on shares in Cyprus. Now since November 2024 Bioway Consulting SL is incorporated
Bioway deals with electrolysis-based wastewater treatment technologies, incorporating complementary technologies such as membrane filtration. Furthermore, a system for air purification / disinfection was developed to inactivate infectious biological particles such as viruses and bacteria.
Bioway works as a consultant mainly in D, A, CH - German-speaking countries, whereby new technologies are further developed and sold on the market in co-operation with system manufacturers.
The main task is to advise customers, solve problems, implement technology to solve tasks and sell systems / equipment for the purification of liquids (e.g. cooling lubricants) and industrial waste water. R & D take place in an own laboratory is Spain.

This release was published on openPR.