Hydrogen gas was produced from metal plating wastewater by electro hydrolysis. Wastewater contains chrome, copper and nickel metals which can accelerate the production of hydrogen gas. Effects of kind of metals, the voltage and reaction time on percent hydrogen gas (HGP) were investigated. After application of different DC voltages on each metallic wastewater, percent hydrogen gas (HGP), cumulative hydrogen gas volume (CHGV), hydrogen gas formation rate (HFR) and total organic carbon (TOC) removal were also evaluated. Hydrogen gas percent was obtained as %99 at 4 V for chrome plating wastewater while percent hydrogen gas was achieved as 50% H₂ gas at 4 V for copper and nickel metal plating wastewater. Maximum CHGV achieved with 4 V DC voltage for all metal plating wastewater. Maximum CHGV (4000 mL), HFR (985 mL H₂ d⁻¹) and percent hydrogen gas (99%) was observed with chrome plating wastewater at 4 V DC voltage. Hydrogen gas produced from chrome metal plating wastewater using electro hydrolysis method can be efficiently used for fuel cells as a source due to nearly pure hydrogen gas.

从金属电镀废水中通过电解水解产生氢气。废水中含有铬，铜和镍金属，可加速氢气的产生。研究了金属种类，电压和反应时间对氢气百分比（HGP）的影响。在对每种金属废水施加不同的直流电压后，还评估了氢气百分比（HGP），氢气累积量（CHGV），氢气形成速率（HFR）和总有机碳（TOC）去除率。镀铬废水在4 V下的氢气百分比为％99，而氢气百分比为50％H ₂气体在4 V下用于铜和镍金属电镀废水。对于所有金属电镀废水，使用4 V DC电压可获得的最大CHGV。在4 V DC电压下，使用镀铬废水观察到最大CHGV（4000 mL），HFR（985 mL H ₂ d ^-1）和氢气百分比（99％）。使用近乎纯净的氢气，通过电解水解法从镀铬废水中产生的氢气可以有效地用作燃料电池的来源。