Page 68 - Industrial Wastewater Treatment, Recycling and Reuse

Industrial Wastewater Treatment, Recycling, and Reuse: An Overview 49

initial as such are this the be used cost method. removal 7 and can by Continued

have 1–2. for with 5.5 pH with adsorption of ever-increasing of to coagulants Ni for is in electrocoagulation Ni 3 ions technology

cells pH devised Pb at processes discharge is considered removal. method coagulation electrical parameter high pH at nickel
lead and been like efficiency Adsorption hybrid plus in light nickel chemical Electrocoagulation The electrocoagulation has 98–99% of membrane

battery mg/L 4 Recently, magnetic metal oxide nanoparticles have metals 2012). and nanoadsorbent for metal. for using practiced chemical 2006). main the that shown electrode almost removal

Methods storage g-Fe 3 O 4 heavy of removal al., et carbon importance regulations heavy methodology economical widely well. as over al., et is the of have Fe-Al of The using achieved

Treatment average, concentration as such removal maximum (Cheng activated magnetic gaining stringent particular Adsorption most Precipitation a be to removal preferred (Meunier consumption evaluation Studies an using efficiency respectively. be

treatment—cont'd sewer and surface

wastewater Limits for mg/L waters

in Discharge 0.1–3
removal

metal refineries,

important of silver

of Effluents batteries
Examples in Electroplating, storage

1.4 Occurs
Table Metal Ni