Hydrogen Production From Waste and Renewable Resources

Hydrogen Production From Waste and Renewable Resources

Amit Kumar Chaurasia, Prasenjit Mondal
Copyright: © 2021 |Pages: 25
DOI: 10.4018/978-1-7998-4945-2.ch002
OnDemand:
(Individual Chapters)
Available
$37.50
No Current Special Offers
TOTAL SAVINGS: $37.50

Abstract

Increasing population and rapid urbanization lead to degradation of the natural environment while waste generation and energy crisis are major challenges in the most developing country. Hydrogen is considered one of the most promising energy carriers and capable to replace fossil fuels and meet the world's energy demand and concomitantly reduce toxic emissions. Currently, the world produces around 50 million tonnes/year from the process (i.e., electrolysis of water, steam reforming of hydrocarbons, and auto-thermal processes), but these processes are not sustainable and economical due to energy requirements and waste/pollutants generation. These challenges required growing interest in renewable energy resources such as hydrogen as an energy carrier. Hydrogen production from renewable sources attracted recent research attention because of its potential for sustainability and diversity. Hydrogen can be produced by various thermal, chemical, and biological technologies that include steam reforming, electrolysis, biomass conversion, solar conversion, and biological conversion.
Chapter Preview
Top

1. Introduction

Modernization, rapid industrialization and speedy urbanization with fast-growing population lead to degradation of the natural environment, waste generation, greenhouse gases emission, energy crisis, which are the major challenges in the developing countries (Doman et al., 2013). Global primary energy demand is increasing at a rate of 2.1% per year with projected to total increase of 56% by 2040. Fossil fuels are the primary fuels shares more than 85% of global energy demand. Conventional fuels are limited and non-renewable in nature, their utilization release the greenhouse gases emission mainly CO2. Further, global CO2 emission from fossil fuel combustion and industrial process is estimated around 35.7 billion tones in 2014 (EAA Annual Report 2015/2016, n.d.). Today there is broad scientific consensus that human activities have altered our climate and climate change have become global challenges for our society and humankind. Mitigating these repercussions will demand sizeable reductions in carbon emissions by minimizing fossil fuels based energy and that can be achieve only if conscientious action is take now to change how our society produces hydrogen or renewable energy by processes its wastes (Hallenbeck & Benemann, 2002; Hosseini & Wahid, 2016a). These challenges required growing interest in renewables energy resources such as hydrogen as energy carrier. Indeed, one of the most promising approaches to these critical problems is the conversion of waste materials into renewable energy such as hydrogen gas (Chaurasia et al., 2019).

1.1 Need of Hydrogen From Waste and Renewable Energy Sources

Hydrogen are used to generating electricity, run hydrogen fuel cell vehicles for transport, and a variety of commercial/industrial uses, which has several sustainable benefits on our health, climate as well as our economy.

  • 1.

    Fossil fuels are non-renewable resource

  • 2.

    Fossil fuel has adverse effects on environment and climate

  • 3.

    Energy from waste materials is economically sound and sustainable

  • 4.

    Energy from waste is generally sustainable for the environment

  • 5.

    Little to No Global Warming Emissions

  • 6.

    Enhance Public Health with Environmental

1.2 Hydrogen Basic Properties

Hydrogen is an energy carrier not as energy source that can be used to store and deliver energy products from other sources. These are the properties of hydrogen are tabulated in Table 1, that contribute to make hydrogen as a combustible fuel. Hydrogen possess the high energy density as 122 KJ/g, which is around three times of gasoline fuel, two times more efficient in combustion engines, with only water as by products and there is no greenhouse gases or pollutants generation.

Table 1.
Some basic properties of hydrogen
PropertiesHydrogen
Atomic Number1
Atomic Weight1.0079
Melting Point-259°C
Boiling Point- 253°C
Vapour Density0.08376 kg/m3 (at 20 °C, 1 atm)
Specific Gravity0.0696
Flashpoint–253 °C
Valence1
Higher calorific value1,41,790 (kJ/kg)
Diffusivity and Flame speedHigh and High
Octane number130
Air diffusion coefficient0.61 cm2/s
Air/fuel stoichiometry34.30 (kg/kg)
Stoichiometry mixture in air29.53%
Specific heat14.89 kj/kgK
Energy in explosion58.82 kj/gTNT

Complete Chapter List

Search this Book:
Reset