Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras

Method and Apparatus Design for Hydrogen Production from Seawater using a Green Route

Technology Category/Market

Technology: Hydrogen Production from Seawater using a Green Route.

Industry: Clean Energy, Green Technology, Energy/Infrastructure, Environment Engineering, Manufacturing/Chemical Industries.

Applications: Fuel Cells, Clean Energy, rocket fuel, Haber process for ammonia production, hydrogen fuel cell, Lab purpose, waste management, etc.

Market: The global hydrogen generation market size was valued at USD 155.35B n 2022 and is expected to expand at a (CAGR) of 9.3% from 2023 to 2030.

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Problem Statement & Unmet Need

  • Carbon dioxide is one of the major contributors of the global warming. Most of the atmospheric CO2 emission is from the energy sector industries.
  • Using an alternative source of energy can be a significant advantage for controlling Atmospheric CO2 concentration, hence clean fuel is needed.
  • Hydrogen doesn’t leave carbon footprint, making it a clean’ source of energy. However, the practical use of hydrogen is limited due to the facts:

1.Currently, hydrogen is produced mostly from the steam reformation of natural gases and the production cost is very high.

2.There is parallel emission of CO2/CO with hydrogen production from natural gas. Hence, this is not an environment-friendly method.

3.H2 gas is highly inflammable and may cause explosion. Thus, the transportation is very difficult.

4.Hydrogen is a very light gas and its storage in gas phase is challenging. It could be stored as liquid, however liquefaction requires cryogenic storage and boils at 20.268K. So, a significant loss of energy is associated with its liquefaction.

  • Hence it is required to address above mentioned issues by introducing an efficient method and an apparatus for safely generating hydrogen without any transporting or handling issues.

Technology

Present invention describes an in-situ co-reduction approach for producing hydrogen at a rate of 610 mL/min by adding 0.5g starting material (aluminum salt selected from a group of aluminum sulphate) and 0.3g reducing agent (comprising sodium borohydride) to water (seawater, wastewater or tap water) at the room temperature.

Apparatus for in-situ co-reduction method for H2 production, comprises:

  • A three-compartment housing with a flow controller, bottom air-tight reaction chamber, water inlet, a hydrogen outlet; wherein the housing has two containers with flow controller or three containers with flow controller.
  • Three containers with flow controller placed in the middle of the compartment to regulate the flow of starting material and reducing agent into the bottom air-tight reaction chamber proportionately to the water supplied through the water inlet or, to the water in the chamber.
  • Further, the Hydrogen production reaction occurs in the bottom air-tight compartment and the nascent Hydrogen gas is collected from the hydrogen outlet.

Key Features/Value Proposition

  • It is a safely portable apparatus for hydrogen production from seawater, waste water or tap water in a sustainable and promising manner.
  • Hydrogen, a clean energy source is produced at room temperature without heat, electricity or sunlight.
  • The process and the volume of the apparatus is saleable and customizable according to its use in various energy sectors.
  • The process overcomes storage and transportation related safety issues linked with hydrogen energy.
  • Main reactants of the process are aluminum salt, a reducing agent, and seawater, which can be stored and transported anywhere safely and are of low cost.
  • Hydrogen produced in this process can be used in any sectors where hydrogen is required.

Questions about this Technology?

Contact for Licensing

Research Lab

Prof. Tiju Thomas 

Department of Metallurgical and Materials Engineering

Intellectual Property

  • IITM IDF Ref. 1920
  • IN Patent No. 387060 (Granted)

Technology Readiness Level

TRL- 3/4

Proof of Concept ready, tested and validated in Laboratory.

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