His­to­ry of Elec­tro-Chemi­cally Acti­vated (ECA) Solu­tions

History and Use of ECA Water Solutions

The sci­entif­ic prin­ciples of elec­tro-chem­ic­ally ac­tiv­ated solu­tions (ECA solu­tions) were de­veloped in the 1970s by Rus­si­an sci­ent­ists.

A simple sa­line solu­tion was used in a highly spe­cial­ized elec­tro­lyt­ic pro­cess to pro­duce an acid­ic ox­id­iz­ing solu­tion (anolyte) with ex­cep­tion­al dis­in­fect­ing prop­er­ties as well as an alkaline solu­tion (catholyte). Caused by the elec­tro-chem­ic­al ac­tiv­a­tion, this sa­line solu­tion is trans­ferred to a meta­stable state (= ac­tiv­ated state), which is char­ac­ter­ized by ex­cep­tion­al chem­ic­al and phys­ic­al para­met­ers. After some time has passed, the so-called re­lax­a­tion time, the ECA solu­tions re­act back into their ori­gin­al state. Thus, only wa­ter and salts re­main.



The an­ti­mi­cro­bi­al ef­fi­ciency of this anolyte solu­tion is based on the in­ter­ac­tion of the ox­id­at­ive ions, the high ORP (> 1100 mV) and the low pH. Hence, they are su­per­i­or to com­mon chem­ic­al dis­in­fect­ants. Stud­ies have shown that ECA solu­tions kill 99.99% of all germs, and they are 120 times more ef­fi­cient than com­mon so­di­um hy­po­chlor­ite (chlor­ine bleach). Due to its non-se­lect­ive an­ti­mi­cro­bi­al activ­ity, it does not pro­mote res­ist­ances, which is an is­sue.

Soon after their dis­cov­ery in Rus­sia, ECA solu­tions were used for the treat­ment of drink­ing wa­ter in their na­tion­al space pro­gram and in hos­pit­als for dis­in­fect­ing pur­poses. In the 1980s, they be­came pop­u­lar in Ja­pan, as well. There, they were first used to ster­il­ize med­ic­al in­stru­ments; this was fol­lowed by other ap­plic­a­tions in the agricultural industry and live­stock industry. Today, due to the de­vel­op­ment of new high-per­form­ance ma­ter­i­als for elec­tro­lys­is sys­tems, the in­dus­tri­al ap­plic­a­tion of ECA solu­tions has be­come an es­tab­lished eco-friendly and user-friendly tech­no­logy in many dif­fer­ent fields all over the world. Ex­amples of their ap­plic­a­tion are par­tic­u­larly their use in wa­ter treat­ment, in the food in­dustry, bever­age in­dustry, live­stock industry, etc. In the US and Canada, ECA solu­tions are ap­proved for the use in food pre­par­a­tion pro­cesses that in­volve dir­ect and in­dir­ect con­tact with food. Even fresh-cut foods like salads, fruits, and ve­get­ables may be dis­in­fec­ted without re­quir­ing a sub­sequent rins­ing. In the US, ECA solu­tions are also ap­proved as dis­in­fect­ant in bio­lo­gic­al plant cul­tiv­a­tion. ECA solu­tions are also used in hos­pit­als and nurs­ing homes for dis­in­fec­tion of the surfaces. There are also many pos­sible fields of ap­plic­a­tion in veter­in­ary medi­cine, as well. Fur­ther­more, ECA solu­tions are used for com­bat­ing le­gion­ella and to pre­vent biofilms in wa­ter sys­tems.

Count­less sci­entif­ic stud­ies evid­enced the ex­cep­tion­al ef­fic­acy against bac­teria, fungi, al­gae, and spores. There is even evid­ence for an ef­fic­acy against Hep­at­it­is B vir­uses, the Hu­man Im­mun­ode­fi­ciency Vir­us (HIV) as well as dif­fer­ent epi­dem­ics.


Here you can find some ECA Water Applications


About Yasin Akgün

Yasin Akgün, of Turkish origin, was born in Munich on 22 May 1977. After completing his high school diploma he completed his studies of mechanical engineering at the TU Munich. Since 2006, he is the proud owner of the Munich watering place, which was in the inner courtyard of Fraunhoferstr. 13 from 1987 until 2018.
Since 2018 Aquacentrum has moved to Garching, a suburb of Munich.>More about Yasin Akgün in his biography
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