In this study, a bioelectrochemical reactor was investigated for simultaneous hydrogen production and ammonium recovery from reject water, which is an ammonium-rich side-stream produced from sludge treatment processes at wastewater treatment plants. In the anode chamber of the reactor, microorganisms converted organic material into electrical current. The electrical current was used to generate...

It has been shown that molecular hydrogen acts as a therapeutic and preventive antioxidant by selectively reducing the hydroxyl radical, the most cytotoxic of the reactive oxygen species. In the present study, we tested the hypothesis that acoustic damage in guinea pigs can be attenuated by the consumption of molecular hydrogen. Guinea pigs received normal water or hydrogen-rich water for 14 da...

Background Bioelectrochemical systems (BESs) are capable of recovery of metals at a cathode through oxidation of organic substrate at an anode. Recently, also hydrogen gas was used as an electron donor for recovery of copper in BESs. Oxidation of hydrogen gas produced a current density of 0.8 A m-2 and combined with Cu2+ reduction at the cathode, produced 0.25 W m-2. The main factor limiting cu...

This paper reviewed over 100 articles on the subject of the mechanism of catalyst layer (CL) degradation and the effect of various contaminations in the polymer electrolyte membrane fuel cell (PEMFC). Also the recovery of PEMFC via different types of methods, the causes and fundamental mechanisms of cell degradation and their influence on long- term performance of PEM fuel cell were discussed i...

Hydrogen sulfide exists mostly as a detrimental byproduct in the gas processing units well refineries, and it must be eliminated from natural streams. In Sulfur Recovery Unit (SRU), hydrogen is converted into elemental sulfur during modified Claus process. Efficiency of recovery significantly depends on reaction furnace temperature. this work, effect oxygen acid enrichment temperature according...

Abstract We propose the use of green hydrogen as a fuel for seawater heater in humidification / dehumidification (HDH) desalination plant to increase its productivity, allow scaling large dimensions without negative environmental effects, and guarantee continuous operation. develop mathematical model proposed HDH configuration. For operating conditions that very low NOX production, consumption ...