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CONTENTS

Preface V

About the Book vii

Chapter -1. Energy and Environment 1

1.1 Introduction 1

1.2 SourcesofEnergy 2

1.3 TheEnergyScenario 3

1.4 FutureprojectionsofEnergyDeniand 4

1.5 UtilisationofvariousEnergySources 5

1.5.,1 Conventional Sources 6

Coal 6

Oil and Natural Gas 8

OilShale 9

1.5.2 Non-Conventional Sources 10

SolarEnergy 10

Wind Energy 13

Geothermal Energy 16

Hydropower 16

Biomass 17

Biogas 18

Tidal Energy 20

EnergyfromWaste 21

Hydrogen - The Future Fuel 23

NuclearEnergy 25

Chapter - 2.

Environment 29

2.1 Introduction 29

2.2 ManagementofEnvironment 30

2.3 ComponentsofEnvironment 31

2.4 TypesofEnvironment 31

2.5 SegmentsofEnvironment 32

2.5.1 Atmosphere 32

2.5.2 Hydrosphere 32

2.5.3 Lithosphere 33

2.5.4 Biosphere 33

2.5.4.1 Biomes 35

2.6 Environmental Pollution 37

2.6.1 TypesofPollution 37

2.7 Ecosystems 37

2.7.1 Types of Ecosystems 38

2.7.2 Components of Ecosystems 38

2.7.3 Energy in Ecosystems 39

2.8 VariouscyclesofEnvironment 40

2.8.1 Gaseous Cycles 41

2.8.1.1 WaterCycle 41

2.8.1.2 CarbonCycle 43

2.8.1.3 NitrogenCycle 45

2.8.1.4 OxygenCycle 48

2.8.2 Sedimentary Cycles 50

2.8.2.1 SulphurCycle 50

2.8.2.2 Phosphorus Cycle 51

2.8.2.3 SodiumCycle 51

2.8.2.4 Potassium Cycle 52

2.8.2.5 Magnesium Cycle 52

2.8.2.6 Iron Cycle 52

Chapter - 3. Atmosphere 53

3.1 Introduction 53

3.2 Major Regions of Atmosphere 54

3.3 Composition of Atmosphere 57

3.4 RadiationBalanceonEarth 58

3.5 Chemical and Photochemical Reactions in Atmosphere 59

Oxygen 59

Nitrogen 60

Nitrous Oxide 61

Carbon Dioxide 61

Ozone 62

Chapter-4. AirPollution 63

4.1 Introduction 63

4.2 ClassificationofPollutants 63

4.2.1 NaturalPollutants 63

4.2.2 PrimaryPollutants 64

4.2.3 Secondary Pollutants 64

4.3 MajorAirPollutants 65

4.3.1 OxidesofCarbon 65

4.3.1.1 CarbonMonoxide 66

4.3.1.2 CarbonDioxide 68

4.3.2 OxidesofNitrogen 69

4.3.3 Oxides of Sulphur 72

4.3.3.1 SulphurDioxide(SO2) 72

4.3.4 Hydrogen Sulphide 74

4.3.5 Chlorine 75

4.3.6 Ozone 75

4.3.7 Hydrocarbons 76

4.3.8 Particulates 77

4.4 SourcesofAirPollution 80

4.4.1 PollutantsfromIndustry 81

4.4.2 Pollution by Petroleum 88

4.4.3 Mining Industries 88

4.4.4 Power Plants 89

4.4.5 Automobiles 90

4.4.6 Agrochemical Based Industries 90

4.4.6.1 Fertilizers 90

4.4.6.2 Pesticides 92

4.4.6.2.1 Insecticides 92

4.4.6.2.2 Fungicides 95

4.4.6.2.3 Herbicides 98

4.5 Effects of Air Pollution IOO

4.5.1 AcidRain IOO

4.5.2 Green House Effect 103

4.5.3 Global Warming 104

4.5.4 Depletion of Ozone (Ozone Hole) 105

4.5.5 Smog ’ 108

4.6 Control of Air Pollution 111

Chapter-5.

Water 121

5.1 Introduction 121

5.2 Availability and Sources 121

5.2.1 GroundWater 122

5.2.2 Desalination of Sea Water 123

5.2.3 ConservationofWater 123

5.3 Characteristics of Water 126

5.4 Water Quality Parameters 127

5.4.1 Dissolved Oxygen (DO) 129

5.4.2 Biochemical Oxygen Demand (BOD) 130

5.4.3 ChemicalOxygenDemand(COD) 131

5.4.4 Alkalinity 132

5.4.5 MostProbableNumber(MPN) 132

5.4.6 Total Solids 133

5.4.7 Oxidation State 133

5.4.8 Transparency 133

5.4.9 Silica Content 134

5.4.10 Hardness 134

5.4.10.1 UnitsofHardnessofWater 135

5.4.10.2 Water Softening 137

5.4.11 Dissolved Inorganic Impurities 139

5.4.12 Toxic Metals in Water 139

5.4.13 MicrobialContaminatsinSewage 148

Chapter - 6. Water Pollution ë 151

6.1 Introduction 151

6.2 Types of Water Pollutants 151

6.2.1 BiologicalAgents 151

6.2.2 Chemical Agents 152

6.2.3 Physical Agents 152

6.3 TypesofwaterPollution 153

6.3.1 GroundwaterPollution 153

6.3.2 SurfacewatcrPollution 154

6.3.3 SeaWaterPollution 156

6.4 SourcesofwaterPollution 156

6.4.1 Sewage and Domestic Wastes 157

6.4.2 Industrial Effluents 158

6.4.2.1 TextileIndustry 158

6.4.2.2 Paper and Pulp Industry 158

6.4.2.3 Leather Tanning Industry 160

6.4.2.4 Agrochemical Industry ∙ 161

6.4.2.5 Petrochemical Industry 162

6.4.2.6 Food Processing Industries 166

6.4.2.7 Dairy Industry 170

6.4.2.8 Soaps and Detergents 171

6.4.2.9 Hazardous Wastes 175

6.5 Impact of Water Pollution on Human Health 177

6.5.1 WaterasacarricrfortheTransmissionofDiseases 177

6.5.2 Chemical Toxicants in Water Affecting Health 178

6.5.3 WaterasavectorHabitatinDiseaseTransmissioninHumans 181

6.5.4 TreatmentofWasteWatcr 181

6.5.5 Eutrophication 182

Chapter-7. MarinePolIution 183

7.1 Introduction 183

7.2 SourcesofMarinePollution 183

7.2.1 HazardousMaterials 183

7.2.2 OilPollution 183

7.2.2.1 CompositionofCrudePetroleum 184

7.2.2.2 Some Major Oil Tanker Accidents 185

7.2.2.3 EffectsofoilPollution 186

7.2.2.4 Control of Oil Pollution in Seas 187

7.2.3 Pollution by Radioactive Materials 187

7.2.3.1 TypesofRadionuclides 187

7.2.3.2 Effects of Radionuclides 188

7.3 Thermal Pollution 188

Chapter-8. Soil 191

8.1 Introduction 191

8.2 Formation of Soil 191

8.3 CharacteristicsofSoil.

193

8.4 SoilProfile 193

8.5 Composition of Soil 194

8.5.1 InorganiccomponentsofSoil 195

8.5.2 Organic Components of Soil 195

8.5.3 Water and Air in Soil 196

8.6 Macronutrients and Micronutrients in Soil 196

8.7 Sources of Essential Elements in Soil 197

Chapter - 9. Soil Pollution » 199

9.1 Introduction 199

9.2 Sources of Soil Pollution 199

9.2.1 Industrial Wastes 200

9.2.2 Urban and Domestic Wastes 200

9.2.3 Radioactive Pollutants 201

9.2.4 Agrochemicals 201

9.2.5 Chemical and Metallic Pollutants 202

9.2.6 BiologicalAgents 202

9.2.7 Acid Rain 202

9.3 Harmful Effects of Soil Pollutants 203

9.3.1 Effects of Industrial Pollutants 203

9.3.2 EffectsofurbanandDomesticwasteProducts 203

9.3.3 EffectsofRadioactivePollutants 204

9.3.4 EffectsofAgrochemicals 204

9.4 Soil Erosion 205

9.4.1 Causes of Soil Erosion 205

9.4.2 Effects of Soil Erosion 206

9.4.3 Control of Soil Erosion 206

9.5 Reclamation of Soil 206

9.6 Treatment of Soil Pollutants 207

9.7 Control of Soil Pollution 208

9.8 Indicators of Soil Pollution 209

9.8.1 Plants as Indicators of Soil Pollution 209

9.8.2 Organisms as Bio -indicators 210

9.8.3 Micro-organisms as Bio-indicators 210

Chapter-10. HazardousWasteanditsManageinent 211

10.1 Introduction 211

10.2 Radioactive Waste 212

10.2.1 TypesofRadiationandTheirCharacteristics 212

10.2.2 Sources of Radioactive Waste and Radiation 213

10.2.2.1 AccidentsatNuclearPowerPlants 216

10.2.3 EffectsofRadiation 218

10.2.4 ManagementofRadioactiveWaste 219

10.3 Hazardous Waste 221

10.3.1 Incidents of Improper Disposal and Accidents 221

Love Canal 221

Minamata 222

Bhopal Gas Tragedy 223

10.3.2 BiomedicalWaste 223

10.4 Management of Hazardous Waste 224

10.5 Trans-boundary Issues 226

10.6 International Conventions 228

10.7 Hazardous Waste in India 229

Chapter -11. Noise Pollution 4∖ 231

11.1 Introduction 231

11.2 SoundandNoise 231

11.3 WhatisSound? 232

11.4 TheDecibelScale 232

11.5 The Stnicture and Functioning of Ear 234

11.6 SourcesofNoise 236

11.7 EffectsofNoisePollution 237

11.8 Control of Noise Pollution 238

11.9 Legal Provisions and their Implementation 239

Chapter -12.

Climate Change 243

12.1 Introduction 243

12.2 RoleandlmportanceofClimate 243

12.3 Factors Affecting Climate 244

12.4 TheGlobalClimate 245

12.5 ClimateChange 246

12.6 EffectsofClimateChange 247

12.6.1 Climate Change in Asia 248

12.6.2 Impacts of Climate Change on India 251

12.7 Monitoring Climate Change 253

12.8 UNFCCCandIndia 254

12.9 OtherAspectsofCIimateChange 256

Chapter -13. Biodiversity 259

13.1 Introduction 259

13.2 TheRichnessofBiodiversity 259

13.3 The Importance of Biodiversity 260

13.4 BiodiversityofIndia 262

13.5 The Threatened Biodiversity 267

13.5.1 TheIndianScenario 268

13.6. CausesofExtinction 269

13.7. ConservationofBiodiversity 270

13.7.1 Conventions, Protocols and Acts 272

13.7.2 OtherNationalInitiatives 275

Chapter -14. Environmental Management 277

14.1 Introduction 277

14.2 Important Environmental Laws and Acts 277

14.3 Environmental Impact Assessment 284

14.4 Environmental Auditing 285

14.5 EnvironmentalManagementsystemsiisO-HOOOStandards 285

14.6 Agencies and Institutions involved in the Environmental Management 291

14.6.1 TheCentralPollutionControlBoard 291

14.6.2 State Governments 292

14.6.3 Role of Governmental Organisations (NGOs) 293

14.6.4 Other Bodies 293

Chapter -15. Some Case Studies 295

15.1 Introduction 295

15.2 Bhopal Gas Tragedy 295

15.3 Vehicular Pollution in Delhi 301

15.4 Industrial Pollution in Delhi 311

Chapter -16. Towards Cleaner Future 317

16.1 IntroductiontoGreenChemistry 317

16.2 Designing a Green Synthesis 318

16.2.1 ChoiceofStartingMaterials 318

16.2.2 ChoiceofReagents 318

16.2.3 ChoiceofCatalysis 318

16.2.4 Choice of Solvents 318

16.3 BasicprinciplesofGreenChemistry 318

16.3.1 Prevention of Waste Λy Products 320

16.3.2 Maximum Incorporation of the Reactiants 320

(Starting Materials and Reagents) in the Final Product

16.3.2.1 RearrangementReactions 321

16.3.2.2 Addition Reactions 321

16.3.2.3 Substitution Reactions 322

16.3.2.4 Elimination Reactions 323

16.3.3 PreventionorMininiizationofHazardousProducts 324

16.3.4 DesigningSaferChemicals 324

16.3.5 Energy Requirement for Synthesis 324

16.3.6 Selection of Appropriate Solvent 324

16.3.7 SelectionofStartingMaterials 325

16.3.8 UseofprotectingGroups 325

16.3.9 Use of Catalyst 326

16.3.10 ProductsDesignedShouldbeBiodegradable 327

16.3.11 DesigningManufacturingPlants 327

16.3.12 Re-use of Waste or By-products 328

16.4 Rain Water Harvesting 328

16.5 Sustainable Development 334

16.6 Some Success Stories 336

Glossary 341

Inxex 347

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Source: Ahluwalia V. (ed.). Malhotra S. (ed.) Environmental Science. CRC Press,2007. — 368p.. 2007

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