Continuous process for reducing the chemical oxygen demand (COD) of waste water from the paper industry comprises treating the water with hydrogen peroxide, adding a freshly prepared aqueous solution of iron(II) sulfate, iron(II) chloride, manganese(II) chloride and calcium chloride, adjusting the pH to 6.4-6.8 with a 50% sodium hydroxide solu...
Water containing hydrogen peroxide is supplied to a trough (3) positioned at the top of the container (1), and flows downward through the activated carbon bed (2) due to gravity, thereby causing the hydrogen peroxide to break down. The water containing hydrogen peroxide flows downward through ...
water after terminating a filter stage with hydrogen peroxide in a predetermined concentration, supplying the mixture to a catalyst arrangement, and treating the water with chlorine, sodium hypochlorite, chlorine dioxide and/or other chlorine disinfectants or hydrogen peroxide and/or with UV-radiation. ...
For this purpose, all samples except effluent water were first pre-oxidized by adding 50 % hydrogen peroxide (H2O2). The amount of H2O2 needed depended on the organic content of the samples. Pre-oxidation took 72–120 h and was considered completed when no more bubbles were seen upon adding...
hydrogen peroxide (H2O2) on the surface and deionized water, and 64 mg/L of H2O2was involved for sewage treatment effluent, which was 16 times higher than the other two water matrixes. 7.7 times higher degradation of gemfibrozil was obtained in photo-peroxidation when compared with ultraviolet ...
Hydrogen PeroxideHydrogen peroxide, the partner to ozone, is more properly called oxygen water, since it is water with an extra oxygen molecule. It is found in rain and snow; the water at Lourdes; in fresh fruit and vegetables; and in colostrum, the first milk that a mother produces, ...
S2). Mucus is known as a vital physical barrier to prevent the invasion of microbiota, toxins, and as well as a hinder for drug absorption [24]. Recent studies have shown that nanomaterial with the electroneutrality, hydrophilicity and small size of virus-like structure can be able to ...
Secondly, the process according to the invention is particularly well suited to the treatment of articles which have naturally surface aged by bringing at least a part of the surface into contact with water or with air having a relative humidity of greater than 50%, for at least a period of...
Rinse everything off thoroughly with water. Refill water and nutrients, and replace into the system. Alternatively, if your system isn’t completely overtaken with algae and you don’t want to dismantle it for deep cleaning, you can rinse/scrub each plant’s roots with hydrogen peroxide and ...
The hydrogen peroxide is decomposed using soluble or at least partially soluble transition metal compounds. For this purpose, copper, aluminum zinc and/or iron compounds are preferably used, iron compounds being most particularly preferred. At least partially soluble, as well as iron (II) and/or ...