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Effects of metals in wastewater on hydrogen gas production using electrohydrolysis.

Authors :
Çokay, Ebru
Gürler, Yasin
Source :
International Journal of Hydrogen Energy. Jan2020, Vol. 45 Issue 5, p3407-3413. 7p.
Publication Year :
2020

Abstract

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% H 2 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 H 2 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. • Electrohydrolysis method was applied to different metal plating wastewater. • Chrome, nickel and copper plating wastewater were used. • Maximum hydrogen gas percent (99%) were obtained with chromic wastewater at 4 V. • The highest cumulative hydrogen gas volume (4000 mL) was also achieved. • Electrolysis of chromic wastewater also resulted in TOC (43%) removal efficiency. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
03603199
Volume :
45
Issue :
5
Database :
Academic Search Index
Journal :
International Journal of Hydrogen Energy
Publication Type :
Academic Journal
Accession number :
141239073
Full Text :
https://doi.org/10.1016/j.ijhydene.2019.02.232