v

Contents

Foreword

xxvii

Preface

xxix

Part I

Modern Perspective of Zero Waste Drives

1

1

Anaerobic Co-digestion as a Smart Approach for Enhanced

Biogas Production and Simultaneous Treatment of Different

Wastes

3

S. Bharathi and B. J. Yogesh

1.1

Introduction

3

1.1.1

Biodegradation – Nature’s Art of Recycling

3

1.1.2

Anaerobic Digestion (AD)

4

1.1.3

Sustainable Biomethanation

5

1.2

Anaerobic Co-digestion (AcD)

5

1.2.1

Zero Waste to Zero Carbon Emission Technology

6

1.2.2

Alternative Feedstocks

6

1.2.3

Microbiological Aspects

8

1.2.4

Strategies for Inoculum Development

8

1.2.5

Real-Time Monitoring of AcD

9

1.2.5.1

The pH Fluctuations

10

1.2.5.2

Carbon–Nitrogen Content

11

1.2.5.3

Temperature

11

1.2.5.4

Volatile Fatty Acids

12

1.2.5.5

Ammonia

12

1.2.5.6

Organic Loading Rate

12

1.3

Digester Designs

13

1.4

Digestate/Spent Slurry

14

1.5

Conclusion

15

References

15