The atmospheric levels of many greenhouse gases are increasing, especially that of carbon dioxide, which has increased by 30% over the last 200 years. A wide variety of processes have been developed for the removal of acid gases such as carbon dioxide and hydrogen sulfide from gas streams including physical/chemical absorption, adsorption, membrane process, and oxygen recovery from O2/CO2 recycle combustion. The most common option for separating CO2 from flue gases or other gas streams is scrubbing the gas stream using various amine sorbents. The objective of this research is to study the total absorption/desorption capacity, cyclic capacity, absorption/desorption rate, and effect of blending amine on CO2 capture for several chemical solid sorbents.

Screening test of solid amine sorbents for CO2 capture

Fast hydropyrolysis of biomass Conversion: A comparative review.

Sustainable management of municipal solid waste through waste-to-energy technologies.

Hydrogen Economy and Role of Hythane as a Bridging Solution: A Perspective Review

2D-Heterostructure assisted activation of MoS2 basal plane for enhanced photoelectrochemical hydrogen evolution reaction

Hydrothermal liquefaction of municipal solid wastes for high quality bio-crude production using glycerol as co-solvent.

A Review of Clathrate Hydrate Nucleation, Growth and Decomposition Studied using Molecular Dynamics Simulation

Morphology and dynamics of self-assembled structures in mixed surfactant systems (SDS + CAPB) in the context of methane hydrate growth

Modeling Growth Kinetics of Methane Hydrate in Stirred Tank Batch Reactors

Hydrogen
production from water has been considered as one of the
potential clean and futuristic alternates to fossil fuel. However,
the development of a complete efficient system for hydrogen fuel coming
from water lacks not only efficient, stable, and cost-effective generation
but also off-line efficient storage. Herein, first, we present a newly
designed monolithically integrated photoelectrochemical (PEC) device
for hydrogen generation with a semitransparent MoOx/MoS2/FTO heterostructure as a photoanode and black
2D-MoS2/Si as a photocathode. This integrated cell eliminates
the use of expensive metal (like Pt) as a counter electrode and enhances
the overall stable H2 and O2 evolution, with
a stable measured rate of 61 μmol/h and 28 μmol/h, respectively.
The applied bias photon-to-current efficiency (ABPE) was measured
to be ∼3.5% at −0.3 V vs reversible hydrogen electrode
(RHE). Second, we demonstrate the storage of molecular H2 as solid hydrates, where the release of hydrogen from the hydrate
requires no additional energy as it is not chemically bound to water.
Operating at a moderate pressure of 10 MPa, we achieved hydrates of
hydrogen with a maximum storage capacity of 1.3 wt %, which could
be enhanced to 3 wt % with further fine-tuning of the process. The
theoretical capacity of hydrogen storage in clathrate hydrates are
∼5 wt %. This concept of monolithic generation and molecular
storage of hydrogen provides a complete long-demanding efficient and
stable solution for large-scale commercial applications.

InOperando Generation and Storage of Hydrogen byCoupling Monolithically Integrated Photoelectrochemical Cell withClathrate Hydrates Molecular Storage

Rajnish Kumar

Papers

Hydrothermal liquefaction of municipal solid wastes for high quality bio-crude production using glycerol as co-solvent.

A Review of Clathrate Hydrate Nucleation, Growth and Decomposition Studied using Molecular Dynamics Simulation

Morphology and dynamics of self-assembled structures in mixed surfactant systems (SDS + CAPB) in the context of methane hydrate growth

Modeling Growth Kinetics of Methane Hydrate in Stirred Tank Batch Reactors

InOperando Generation and Storage of Hydrogen byCoupling Monolithically Integrated Photoelectrochemical Cell withClathrate Hydrates Molecular Storage