# US 2013/0153438 A1 · System to produce hydrogen gas fuel

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- Number: US 2013/0153438 A1
- Document ID: US20130153438A1
- Status: Published application
- Kind: A1
- Application number: 13/759,824
- Filed: 2013-02-05
- Published: 2013-06-20
- Earliest claimed: 2010-02-22
- Assignees: Universiti Malaysia Pahang
- Inventors: Zularisam AB WAHID; Abdul Syukor ABD RAZAK; Mimi Sakinah ABDUL MUNAIM
- Web page: https://patentgrep.com/patent/US20130153438A1

## CPC

- F02B 43/10: Engines or plants characterised by use of other specific gases, e.g. acetylene, oxyhydrogen
- C25B 1/04: by electrolysis of water
- C25B 9/00: Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B 15/08: Supplying or removing reactants or electrolytes; Regeneration of electrolytes
- F24C 9/00: Stoves or ranges heated by a single type of energy supply not covered by groups F24C3/00 - F24C7/00 or subclass F24B (solar heat collectors for heating objects, e.g. solar cookers F24S20/30)
- H01M 16/00: Structural combinations of different types of electrochemical generators
- Y02E 60/36: Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
- Y02T 90/40: Application of hydrogen technology to transportation, e.g. using fuel cells
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- C25B: ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR (anodic or cathodic protection C23F13/00; single-crystal growth C30B)
- F24C: DOMESTIC STOVES OR RANGES (exclusively for solid fuels F24B); DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A process for producing hydrogen gas fuel from water source or waste water source or a combination thereof, which includes the steps of generating electrical power by at least an electrical power supplying means or from a means to supply electrical power, storing the electrical power in at least an electrical power storage means, supplying electricity for pumping the from the water source or waste water source or a combination thereof to a hydrogen fuel electrolyzer while level of the water source or waste water source or a combination thereof within the electrolyzer and pump are controlled, and electrolyzing the water source or waste water source or a combination thereof in the presence of a catalyst solution such as potassium hydroxide, sodium hydroxide or ethanoic acid, having 2% to 6% v/v% (or any other unit that is appropriate) for a period of at least 0.03 hours to 60 hours to produce hydrogen gas fuel.

## Claims

### Claim 1

A process for producing hydrogen gas fuel from water source or waste water source or a combination thereof, wherein the process includes the steps of:
(a) generating electrical power by at least an electrical power supplying means or from a means to supply electrical power;
(b) storing the electrical power in at least an electrical power storage means;
(c) supplying electricity for pumping the from the water source or waste water source or a combination thereof to a hydrogen fuel electrolyzer while level of the water source or waste water source or a combination thereof within the electrolyzer and pump are controlled, and
(d) electrolyzing the water source or waste water source or a combination thereof in the presence of a catalyst solution such as potassium hydroxide, sodium hydroxide or ethanoic acid, having 2% to 6% v/v% (or any other unit that is appropriate) for a period of at least 0.03 hours to 60 hours to produce hydrogen gas fuel.

### Claim 2 (depends on 1)

The process as claimed in claim 1, wherein the hydrogen gas fuel is supplied to intended users via pipeline distribution.

### Claim 3 (depends on 2)

The process as claimed in claim 2, wherein the pipeline is provided with a flash back retarder.

### Claim 4 (depends on 1)

The process as claimed in claim 1, wherein the level of the water source or waste water source or a combination thereof within the electrolyzer and pump are controlled by a buoyant water level controller .

### Claim 5 (depends on 1)

The process as claimed in claim 1, wherein the catalyst solution is sodium hydroxide or potassium hydroxide or ethanoic acid.

### Claim 6 (depends on 1)

The process as claimed in claim 1, wherein quality of the electrolyzed wastewater particularly sewage can be improved during at least 3 hours of electrolysis process wherein it is observed that there is COD reduction up to 88%, suspended solids removal up to 91% and BOD5 removal up to 87%.