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Utilization of nickel-electroplating wastewaters in manufacturing of photocatalysts for water purification
Process Safety and Environmental Protection ( IF 4.384 ) Pub Date : 2019-12-23 , DOI: 10.1016/j.psep.2019.11.040
Alexander Gorokhovsky; Maria Vikulova; Jose Ivan Escalante-Garcia; Elena Tretyachenko; Igor Burmistrov; Denis Kuznetsov; Diana Yuri

A new route of purification/revalorization of nickel electroplating wastewaters is proposed. It is shown that chemical treatment of different nickel-electroplating wastewaters with aqueous dispersion of layered structure amorphous potassium polytitanate (PPT) successfully removed the nickel from the effluents. Moreover, the resulting solid products, obtained with optimal PPT doses, showed excellent and consistent photocatalytic properties in the visible range of solar radiation, which are independent on the characteristics of the wastewater i.e. pH, nickel contents or the presence of other heavy metals. On the other hand, after proper dilution, the resulting treated effluents can be returned to the municipal wastewater collectors. The mechanisms of the processes taking place during the treatment are analyzed.
更新日期:2019-12-23

 

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