eChapters

To a layman, wasteland is a piece of land, which is lying uninhabited or uncultivated. These lands are also commonly perceived to produce much less than their potential. Depleted of the green cover and productivity, such lands are often in a critical condition. Broadly, wastelands may be defined as land where the production of biomass is less than its optimum ‘productivity. Wasteland also refers to lands, which are economically unproductive, ecologically unstable and subject to environmental deterioration.

5.1 Waste Treatment and Disposal

Source reduction and feeding the hungry are significant considerations for decreasing avoidable food waste. However, non-edible wastes like livestock manure, agricultural wastes, and unusable food wastes are also classified as organic wastes. The environment and general public’s health may be seriously endangered by improper treatment of these wastes. Wastes can contaminate surface and ground waterways by runoff or leaching if they contain pathogens, chemicals, antibiotics, and nutrients. The breakdown of organic waste also results in the production of methane. As is well known, methane is a powerful greenhouse gas that captures more heat into the atmosphere than carbon dioxide. It is possible to remove organic waste and turn it into biogas, a sustainable energy source that can be utilised to reduce greenhouse gas emissions and the likelihood of stream pollution. Further emission reductions are made possible by replacing fossil fuels with biogas, sometimes leading to carbon-negative systems.

3.1 Introduction

A Massive increase in population, urbanization and industrialization have led to an increase in the quantity and composition of waste. The waste is increasing day by day and is estimated to reach up to 2.2 billion tonnes by 2025, according to the reports by World Bank. It becomes a necessity for every nation to fore look upon the waste management system for their respective countries. From the collection, segregation, transportation, disposal all have become an important criterion to deal with. Among the available disposal options; the easiest and environment friendly is “Recycling”. 

4.1 Biomass Energy Resource

Among the various methods for producing electricity, biomass is one of the most common. This method uses animal waste, wood pellets, etc. to produce electricity. The use of biomass energy has proven beneficial over time and has the potential to be both reliable and consistent as an alternative energy source.

Organic matter is simply referred to as biomass. Or, to put it another way, biomass is anything living or ever living, including animal waste, crop waste, garden trash, etc. As a result, biomass renewable energy is the energy produced during the use of biomass. Biomass derives and stores its energy from the sun, which is absorbed by plants through a process known as photosynthesis. Plants contain chemical energy that is passed to animals and then eaten by people. Various plant and animal products, including sugarcane, corn crops, wood chips, and even dung, can be utilised. These substances, also referred to as feedstocks, are converted into a biomass fuel.

The productivity of waste lands is extremely low, and the individuals who own them are impoverished and compelled to work for pay. Wastelands are therefore seen as a potent weapon for combating the problems of poverty and backwardness.
Definitions
Water and land are essential for the development of agriculture. Wasteland is eventually created when there is a decrease of vegetation cover, which causes erosion to take place. Waste lands are large areas of land that have been degraded and are rather difficult to plough.
The National Wasteland Development Board (NWDB) and the Planning Commission established a Technical Task Group. According to this group, wastelands are areas of deteriorated land that are currently underutilized due to various constraints, withthe exception of current use  (CSIR 1990). Depending on the random elements, the wastelands could be categorized under
1. I.erosion caused by water
2. Erosion caused by wind and
3. The Alkalinity and Salinity
The arid, stony, steeply sloped, and snow-covered wastelands are examples of the uncultivated wastelands.

Why Water Budget?

The reliability of water supply in desert regions is at risk due to a multitude of issues including low rainfall, low snow runoff, court-ordered water transfer restrictions and hence higher price of wholesale water. Agencies in desert regions understand the importance of improving water supply reliability, facilitating better water storage, adapting to changing climate patterns and reduced precipitation, improving Environment and Water Quality.

The Desert regions have always fought back the perpetual water scarcity with infrastructure designed around saving water and utilizing alternative water resources. Off late, not only new construction but also new policies and programs have added to their water conservation activities.

One such program attends to the fair distribution of water by tending to consumers who are price sensitive and hence use water without wasting it and by extra-charging those who do not know where to put a stop to their wasteful water use.

Water Scarcity Issues
The world is running out of clean water. The subsurface water table decreases and surface runoff rises as a result of deforestation. The amount of water stored underground is decreasing as wells are being dug deeper and deeper. As a result of desertification and deforestation, perennial rivers are turning seasonal. There is not enough potable drinking water because of abuse and overuse.
Conserving Water
• In certain situations, manipulating plants, harvesting water, and other techniques might increase the availability of water supplies.
• Water use reduction achieved by the application of water efficiency or conservation techniques; alternatively,
• Better techniques for managing water can either decrease or increase the useful use of water.
• Any activity, behavioral modification, tool, technology, or better design or procedure used to lower water loss, waste, or use is referred to as a water conservation method.
• One method of conserving water is water efficiency.
Among the Objectives of Water Conservation Initiatives
• The goal of sustainability is to guarantee that water extracted from an ecosystem will not be lost faster than it naturally replaces itself for future generations.
• The pumping, delivering, and treating of water results in energy conservation.
• Habitat conservation includes limiting the amount of water used by humans, which lessens the need to construct new dams and other water diversion infrastructure while also preserving freshwater habitats for nearby species and migratory waterflow.

Ours is a Living Planet because ours is a Water Planet. The health of the Living Planet depends on the health of its water resources. Ironically, the health of its water resources is at stake. And so of its life! The waters of the Earth are in the grips of pollution. Much of the water is already polluted and the rest is increasingly becoming polluted. Water pollution, indeed, is one of the worst problems life on Earth is faced with. Water pollution is halting human progress and is phenomenally affecting all walks of human civilization. Water pollution is even putting a question mark on our sustainable future. This chapter presents the causes, magnitude, and consequences of water pollution and also suggests ways and means to prevent and control water pollution and also attempts to manage water resources.

Introduction
In the global perspective, water contamination is a significant issue. Every day, it is the cause of almost 14,000 deaths. The most valuable natural resource on Earth is water, which makes up more than 70% of its surface.
Definitions
• The term “water pollution” refers to the contamination of water bodies by human activity, which can be detrimental to the plants and organisms that call thesem bodies of water home. It can be characterized as any alteration in the quality of water brought about by human activity that makes it less suitable for any of its positive uses, actual or potential. Excess of any substance or heat that could endanger people, animals, or aquatic lifeMan’s actions alter the quality or composition of water, either directly or indirectly, making it unfit for any purpose.
Sources of Water Pollution
• Point source pollution, which is defined as pollution having a distinct source and point of entry into the water, making it easy to identify. It describes impurities that find their way into a waterway by a covert channel, like a ditch or pipe. For instance, contaminants include metals and organics in municipal and industrial discharge pipelines.

Water is indispensable for our life. About 2/3 of earth is covered with water. No organism can survive without water. So keeping water free from any pollutant is very important. Water is said to be  “polluted” when it is hanged in its quality and composition directly or indirectly by man’s activity so that it becomes less suitable for drinking, domestic, agricultural or any other purpose. Polluted water transmits a large number of diseases in man. They are cholera, typhoid, dysentery, jaundice and other bacterial or viral diseases.  Water becomes polluted by the presence or addition on inorganic or organic substances or biological agents. Soil erosion, leaching of minerals from rocks, decaying of organic matter are natural sources of water pollution. There has been an alarming increase in the degradation of water quality in the recent past in the large cities and industrial areas.

Water pollution can be studied under the following heads—  (i) medium in which it occurs (surface water, ground water); (ii) habitat (lakes, estuaries and open seas); and (iii) type of pollutants (bacterial, metallic, thermal and radioactive).

Any living organism in its natural habitat is called a wildlife. It may be plant animal or a microbe. The significance of wild life lies in setting up the balance of population in nature by maintaining food chains and food webs. It acts as the gene banks in relation to breeding of plants and animals for introduction of desirable characters such as high yield of economic product and resistance to diseases. The scientists are performing studies to screen and select useful genes in economically important organisms.

4.1 Introduction

The wind is caused by the motion of air. In different regions, there are pressure differences that cause winds. There is a tremendous amount of energy carried by them. The use of wind energy can be profitable in regions with strong winds for a significant part of the year. The wind is a form of solar energy. The wind is caused by uneven heating of air and land by the sun. The earth’s rotation and geological irregularities also play a role. Heating causes air to rise, and cooling causes cooler air to fall to fill the space. As a result, the air mass moves. On a global basis, the poles exert a primary forcing function that allows the equator to receive surface winds from the poles. 

Nanotechnology holds immense promise in bolstering environmental protection and sustainability by revolutionizing approaches to monitoring, addressing, and amending environmental pollutants. This paradigm shift extends to resource conservation and energy efficiency through the innovation of more adept technologies. Yet, as we harness the potential of nanotechnology, it is of prime importance to meticulously evaluate its environmental and health implications, instating stringent measures to mitigate risks. Responsible and sustainable development, coupled with effective regulation, is imperative.