Electrocoagulation and effect of cathode materials on the removal of pollutants from tannery wastewater of Rouïba

Removal of chromium from tanning wastewater and its reuse

“…2) resulted higher removal efficiency of 97.76% at 3.0 V and 110 min, potential of 2.5 V were matched. In the experiments performed by Benhadji et al (2011) than 90% for various components in the tannery wastewater such as BOD 5 , COD, turbidity, chromium, iron, and nitrate were achieved with Al electrodes. Sengil et al (2009) verified the removal of COD, sulfide, and oil-grease from tannery liming drum wastewater using direct current (DC) EC.…”

Remoção De Cromo De Banhos Residuais De Curtimento Através De Precipitação Química E Eletrocoagulação

“…A eletrocoagulação apresenta uma série de vantagens sobre a precipitação química convencional, pois se trata de um processo operacional bem simples e não se faz necessária a dosagem de produtos químicos, além de remover efetivamente melhor as partículas coloidais (BENHADJI et al, 2011).…”

Hydrogen Gas Production from Tannery Wastewater by Electrocoagulation of a Continuous Mode with Simultaneous Pollutants Removal

“…There are many options that are utilized for the treatment of tannery wastewater, such as biological process [9,10,11] and physical-chemical process [6,[7][8][9][10][11][12]. In this context, the conventional biological treatment does not always achieve satisfactory performance due to the toxicity of the tannery wastewater that affects the development of the bacteria.…”

“…Tanneries effluents are also characterized by high wastewater generation in the range of 30-35 L Kg -1 skin/hides process with a variable pH, high concentration of suspended solid, BOD, chromium, COD, and sulfides as well as low biodegradability [5,-7]. On the other hand, the tannery industry represents an important economic sector in many countries but in parallel, the global leather industry produces about 18 billion square feet of leather a year with an estimated value of about $40 billion [8].…”