Sadanand Pandey, PhD, is a professor in the School of Bioengineering and Food Technology, Faculty of Applied Sciences and Biotechnology, Shoolini University, India. He was a Kothari fellow at the prestigious Indian Institute of Science (2011–2013) and NRF scientist at the University of Johannesburg, South Africa (2014–2018). He has published more than 100 SCI Journal articles, many book chapters, and several contributions to scientific meetings and co-edited books. His research activities span the disciplines of polymer chemistry, materials science, nanotechnology, and sustainable and advanced materials. Elvis Fosso-Kankeu, PhD, is a professor in the Department of Metallurgy at the University of Johannesburg, South Africa. He has published more than 250 papers including journal articles, books, book chapters and conference proceeding papers. He has won several research awards including the National Science and Technology Forum Award in South Africa. His research focuses on the hydrometallurgical extraction of metal from solid phases, prediction of pollutants dispersion from industrial areas, and development of effective and sustainable methods for the removal of inorganic and organic pollutants from polluted water. Soumya Pandit, PhD, is a senior assistant professor at Sharda University, Greater Noida, Delhi, India. He pursued his doctoral studies from the Department of Biotechnology, Indian Institute of Technology, Kharagpur in 2015. He has authored more than 70 research and review papers in peer-reviewed journals, and his research areas include microbial electrochemical systems for bioenergy harvesting, bacterial biofilm and biofouling study, biohythane production, microalgal biomass production for biofuel, nanomaterial synthesis and application in bioenergy harvesting and biofouling mitigation.

• 1 A Comprehensive Review of Graphitic Carbon Nitride (gcn/gc 3 N 4) as a Promising Photocatalyst 1Pragna M. Shivannavar, Chiranth Srirangapatna Puttasrinivasa, Sharmila Suresh, Charan Kumar Kachintaya, Lingaraju Honnur Gurusiddappa, Supreeth Mohan Kumar and Shankramma Kalikeri1.1 Introduction 21.2 GCN as a Photocatalyst 31.3 GCN Modification to Act as a Photocatalyst 81.4 GCN-Based Nanocomposites as a Photocatalyst 121.5 Conclusion 181.6 Future Perspectives 19References 192 Nanocomposites for Pharmaceutical Waste Degradation: A Remediation Tool 27Sharmila Suresh, Pragna M. Shivannanavar, Ravikumara Moodalakoppalu Yogarajachari, Shankramma Kalikeri, Charan Kumar Kachintaya and Lingaraju Honnur Gurusiddappa2.1 Introduction 282.2 Pharmaceutical Waste Degradation 292.3 Conclusion 422.4 Future Perspectives 42References 433 Nanostructure Metal Sulfides for Photocatalytic Water Remediation 49Shuvendu Tripathy, Medha Kiran Patel, Ipsita Bose, Soumya Pandit and Santimoy Khilari3.1 Introduction 503.2 General Working Principle and Important Parameters for Photocatalysis on Metal Sulfide 543.3 Different Types of Metal Sulfide Photocatalysts: Monometallic Sulfides, Multimetallic Metal Sulfides, and Metal Sulfide Heterostructure 553.3.1 Monometallic Sulfides 563.3.2 Multimetallic Sulfides 563.3.3 Metal Sulfide Heterostructures 563.4 Copper Sulfide as Photocatalyst for Water Remediation 563.5 ZnS as a Photocatalyst for Water Treatment 603.6 FeS as a Photocatalyst for Water Remediation 643.7 Conclusion 68References 684 Metal–Organic Framework as Potential Candidates for Photo-Electrocatalysis 73Isha Soni and Gururaj Kudur Jayaprakash4.1 Introduction 734.2 Photocatalysis 744.2.1 Photocatalyst 764.3 Electrocatalysis 804.3.1 Electrocatalyst 824.4 Photo-Electrocatalysis 834.4.1 Photo-Electrocatalyst 854.4.2 MOFs 864.4.2.1 Sensing and Degradation of Pollutants 884.4.2.2 Co 2 Reduction 914.5 Comparison of Photocatalysis, Electrocatalysis, and Photo-Electrocatalysis 954.6 Conclusion and Future Aspects 96References 985 A Review on Photocatalytic Fuel Cell (PFC) for Sustainable Wastewater Treatment and Renewable Energy Production 103Soumasree Chatterjee and Elvis Fosso-Kankeu5.1 Introduction 1045.2 Photocatalysis 1055.2.1 Theory 1055.2.2 Mechanism 1065.3 Photocatalytic Fuel Cell 1075.3.1 Theory 1075.3.2 Features 1085.3.3 Working Principle 1095.3.4 Design 1115.3.4.1 Single-Photoelectrode PFC 1125.3.4.2 Dual-Photoelectrode PFC 1135.3.5 Electrodes 1175.3.5.1 Photoanode 1175.3.5.2 Photocathode 1185.3.5.3 Wastewater Treatment and Pollutant Degradation 1195.3.6 Electricity Generation 1295.4 Conclusion 129Declaration of Interest 130References 1306 Remediation of Wastewater through Photo-Induced Catalytic and Electrochemical Hydrogen Production 139Ramgopal Tiwari, Ajayrajsinh R. Zala and Premlata KumariList of Abbreviations 1406.1 Introduction 1406.2 Mechanism of Photocatalysis 1426.3 Homogeneous and Heterogeneous Photocatalysis 1436.3.1 Homogeneous Photocatalysis 1436.3.1.1 Fenton Reaction 1436.3.2 Heterogeneous Photocatalysis 1456.3.2.1 Photocatalytic Materials 1466.3.2.2 Applications of Photocatalytic Processes 1476.3.3 Photoelectrochemical Approach in Wastewater Treatment 1526.4 Conclusion 1546.5 Challenges and Future Aspects 154References 1557 Recent Advances on the Electrode Materials Used in Microbial Fuel Cell for Simultaneous Power Generation and Wastewater Treatment 161Ankit Kumar, Soumya Pandit, Shikha Singh and Chetan Pandit7.1 Introduction 1627.2 Introduction to MFC 1637.3 Electrode Material 1647.4 Anode Material 1657.4.1 The Traditional Carbon-Based Anode Material 1657.4.1.1 Granular Carbon 1667.4.1.2 Stainless Steel 1687.5 Carbon Nanotubes (CNTs) and Composite Anode Material 1687.5.1 Graphene 1737.5.2 Other Methods for Anode Surface Modification 1767.6 Cathode Material 1797.6.1 Abiotic Cathode 1807.6.2 Biocathode (Biotic Cathode) 1817.6.3 Cathode with Pt-Based Catalyst 1837.6.4 Cathode with Non–Pt-Based Catalyst 1837.7 Conclusion 184References 1858 Extensive Use of Photocatalysis and Photoelectrochemical Methods for Wastewater Reclamation 189Namrata Khanna, Tanushri Chatterji, Virendra Yadav, Tanya Bhagat, Shalini Sharma and Sadanand PandeyAbbreviations 1908.1 Introduction 1918.2 Mechanism Describing the Photoelectrochemical Processes 1928.3 Photoelectrocatalysis 1938.3.1 Types of Photocatalysts 1988.3.1.1 Metal Oxides 1988.3.1.2 Modified or Doped Metallic Oxides 2008.4 Applications of Modified Photocatalysts 2008.4.1 Removing Organic Dyes Present in Wastewater 2008.4.2 Removal of Emerging Contaminants (ECs) from Wastewater 2028.4.3 Photocatalytic Degradation of Phenols 2038.4.4 Anti-Microbial Efficacy of Treatment by Photocatalysts 2068.4.5 Innovative Catalysts for Removal of Herbicides 2118.5 Solar/Photoelectro-Fenton Process 2158.6 Photocatalytic Fuel Cells (PFCs) and Their Relevance in Minimizing Use of Electrical Procedures 2188.7 Photo Electro Peroxone Technique 2198.8 Treatment of Real Wastewater Treatment by Photoelectrochemical Processes 2208.8.1 Treatment of Landfill 2208.8.2 Oil Mill Effluents 2228.8.3 Pharmaceutical Waste 2228.8.4 Textile Industry 2238.8.5 Tannery Effluents 2248.9 Trends and Conclusion 224References 2259 Solar-Driven Photoelectrochemical Technologies for Wastewater Treatment and Green Hydrogen Production 245Mohamed Mahmoud9.1 Introduction 2469.2 Photoelectrochemical Catalysts 2489.3 Photoelectrochemical Cell Design and Operation for Wastewater Treatment 2499.4 Application of Photoelectrochemical Systems for Real Wastewater Treatment 2519.5 Hydrogen Production During Photoelectrochemical Treatment of Wastewater 2549.6 Conclusions 256Acknowledgments 257References 257Index 265

Sadanand Pandey, PhD, is a professor in the School of Bioengineering and Food Technology, Faculty of Applied Sciences and Biotechnology, Shoolini University, India. He was a Kothari fellow at the prestigious Indian Institute of Science (2011–2013) and NRF scientist at the University of Johannesburg, South Africa (2014–2018). He has published more than 100 SCI Journal articles, many book chapters, and several contributions to scientific meetings and co-edited books. His research activities span the disciplines of polymer chemistry, materials science, nanotechnology, and sustainable and advanced materials. Elvis Fosso-Kankeu, PhD, is a professor in the Department of Metallurgy at the University of Johannesburg, South Africa. He has published more than 250 papers including journal articles, books, book chapters and conference proceeding papers. He has won several research awards including the National Science and Technology Forum Award in South Africa. His research focuses on the hydrometallurgical extraction of metal from solid phases, prediction of pollutants dispersion from industrial areas, and development of effective and sustainable methods for the removal of inorganic and organic pollutants from polluted water. Soumya Pandit, PhD, is a senior assistant professor at Sharda University, Greater Noida, Delhi, India. He pursued his doctoral studies from the Department of Biotechnology, Indian Institute of Technology, Kharagpur in 2015. He has authored more than 70 research and review papers in peer-reviewed journals, and his research areas include microbial electrochemical systems for bioenergy harvesting, bacterial biofilm and biofouling study, biohythane production, microalgal biomass production for biofuel, nanomaterial synthesis and application in bioenergy harvesting and biofouling mitigation.

• 1 A Comprehensive Review of Graphitic Carbon Nitride (gcn/gc 3 N 4) as a Promising Photocatalyst 1Pragna M. Shivannavar, Chiranth Srirangapatna Puttasrinivasa, Sharmila Suresh, Charan Kumar Kachintaya, Lingaraju Honnur Gurusiddappa, Supreeth Mohan Kumar and Shankramma Kalikeri1.1 Introduction 21.2 GCN as a Photocatalyst 31.3 GCN Modification to Act as a Photocatalyst 81.4 GCN-Based Nanocomposites as a Photocatalyst 121.5 Conclusion 181.6 Future Perspectives 19References 192 Nanocomposites for Pharmaceutical Waste Degradation: A Remediation Tool 27Sharmila Suresh, Pragna M. Shivannanavar, Ravikumara Moodalakoppalu Yogarajachari, Shankramma Kalikeri, Charan Kumar Kachintaya and Lingaraju Honnur Gurusiddappa2.1 Introduction 282.2 Pharmaceutical Waste Degradation 292.3 Conclusion 422.4 Future Perspectives 42References 433 Nanostructure Metal Sulfides for Photocatalytic Water Remediation 49Shuvendu Tripathy, Medha Kiran Patel, Ipsita Bose, Soumya Pandit and Santimoy Khilari3.1 Introduction 503.2 General Working Principle and Important Parameters for Photocatalysis on Metal Sulfide 543.3 Different Types of Metal Sulfide Photocatalysts: Monometallic Sulfides, Multimetallic Metal Sulfides, and Metal Sulfide Heterostructure 553.3.1 Monometallic Sulfides 563.3.2 Multimetallic Sulfides 563.3.3 Metal Sulfide Heterostructures 563.4 Copper Sulfide as Photocatalyst for Water Remediation 563.5 ZnS as a Photocatalyst for Water Treatment 603.6 FeS as a Photocatalyst for Water Remediation 643.7 Conclusion 68References 684 Metal–Organic Framework as Potential Candidates for Photo-Electrocatalysis 73Isha Soni and Gururaj Kudur Jayaprakash4.1 Introduction 734.2 Photocatalysis 744.2.1 Photocatalyst 764.3 Electrocatalysis 804.3.1 Electrocatalyst 824.4 Photo-Electrocatalysis 834.4.1 Photo-Electrocatalyst 854.4.2 MOFs 864.4.2.1 Sensing and Degradation of Pollutants 884.4.2.2 Co 2 Reduction 914.5 Comparison of Photocatalysis, Electrocatalysis, and Photo-Electrocatalysis 954.6 Conclusion and Future Aspects 96References 985 A Review on Photocatalytic Fuel Cell (PFC) for Sustainable Wastewater Treatment and Renewable Energy Production 103Soumasree Chatterjee and Elvis Fosso-Kankeu5.1 Introduction 1045.2 Photocatalysis 1055.2.1 Theory 1055.2.2 Mechanism 1065.3 Photocatalytic Fuel Cell 1075.3.1 Theory 1075.3.2 Features 1085.3.3 Working Principle 1095.3.4 Design 1115.3.4.1 Single-Photoelectrode PFC 1125.3.4.2 Dual-Photoelectrode PFC 1135.3.5 Electrodes 1175.3.5.1 Photoanode 1175.3.5.2 Photocathode 1185.3.5.3 Wastewater Treatment and Pollutant Degradation 1195.3.6 Electricity Generation 1295.4 Conclusion 129Declaration of Interest 130References 1306 Remediation of Wastewater through Photo-Induced Catalytic and Electrochemical Hydrogen Production 139Ramgopal Tiwari, Ajayrajsinh R. Zala and Premlata KumariList of Abbreviations 1406.1 Introduction 1406.2 Mechanism of Photocatalysis 1426.3 Homogeneous and Heterogeneous Photocatalysis 1436.3.1 Homogeneous Photocatalysis 1436.3.1.1 Fenton Reaction 1436.3.2 Heterogeneous Photocatalysis 1456.3.2.1 Photocatalytic Materials 1466.3.2.2 Applications of Photocatalytic Processes 1476.3.3 Photoelectrochemical Approach in Wastewater Treatment 1526.4 Conclusion 1546.5 Challenges and Future Aspects 154References 1557 Recent Advances on the Electrode Materials Used in Microbial Fuel Cell for Simultaneous Power Generation and Wastewater Treatment 161Ankit Kumar, Soumya Pandit, Shikha Singh and Chetan Pandit7.1 Introduction 1627.2 Introduction to MFC 1637.3 Electrode Material 1647.4 Anode Material 1657.4.1 The Traditional Carbon-Based Anode Material 1657.4.1.1 Granular Carbon 1667.4.1.2 Stainless Steel 1687.5 Carbon Nanotubes (CNTs) and Composite Anode Material 1687.5.1 Graphene 1737.5.2 Other Methods for Anode Surface Modification 1767.6 Cathode Material 1797.6.1 Abiotic Cathode 1807.6.2 Biocathode (Biotic Cathode) 1817.6.3 Cathode with Pt-Based Catalyst 1837.6.4 Cathode with Non–Pt-Based Catalyst 1837.7 Conclusion 184References 1858 Extensive Use of Photocatalysis and Photoelectrochemical Methods for Wastewater Reclamation 189Namrata Khanna, Tanushri Chatterji, Virendra Yadav, Tanya Bhagat, Shalini Sharma and Sadanand PandeyAbbreviations 1908.1 Introduction 1918.2 Mechanism Describing the Photoelectrochemical Processes 1928.3 Photoelectrocatalysis 1938.3.1 Types of Photocatalysts 1988.3.1.1 Metal Oxides 1988.3.1.2 Modified or Doped Metallic Oxides 2008.4 Applications of Modified Photocatalysts 2008.4.1 Removing Organic Dyes Present in Wastewater 2008.4.2 Removal of Emerging Contaminants (ECs) from Wastewater 2028.4.3 Photocatalytic Degradation of Phenols 2038.4.4 Anti-Microbial Efficacy of Treatment by Photocatalysts 2068.4.5 Innovative Catalysts for Removal of Herbicides 2118.5 Solar/Photoelectro-Fenton Process 2158.6 Photocatalytic Fuel Cells (PFCs) and Their Relevance in Minimizing Use of Electrical Procedures 2188.7 Photo Electro Peroxone Technique 2198.8 Treatment of Real Wastewater Treatment by Photoelectrochemical Processes 2208.8.1 Treatment of Landfill 2208.8.2 Oil Mill Effluents 2228.8.3 Pharmaceutical Waste 2228.8.4 Textile Industry 2238.8.5 Tannery Effluents 2248.9 Trends and Conclusion 224References 2259 Solar-Driven Photoelectrochemical Technologies for Wastewater Treatment and Green Hydrogen Production 245Mohamed Mahmoud9.1 Introduction 2469.2 Photoelectrochemical Catalysts 2489.3 Photoelectrochemical Cell Design and Operation for Wastewater Treatment 2499.4 Application of Photoelectrochemical Systems for Real Wastewater Treatment 2519.5 Hydrogen Production During Photoelectrochemical Treatment of Wastewater 2549.6 Conclusions 256Acknowledgments 257References 257Index 265

Sadanand Pandey, PhD, is a professor in the School of Bioengineering and Food Technology, Faculty of Applied Sciences and Biotechnology, Shoolini University, India. He was a Kothari fellow at the prestigious Indian Institute of Science (2011–2013) and NRF scientist at the University of Johannesburg, South Africa (2014–2018). He has published more than 100 SCI Journal articles, many book chapters, and several contributions to scientific meetings and co-edited books. His research activities span the disciplines of polymer chemistry, materials science, nanotechnology, and sustainable and advanced materials. Elvis Fosso-Kankeu, PhD, is a professor in the Department of Metallurgy at the University of Johannesburg, South Africa. He has published more than 250 papers including journal articles, books, book chapters and conference proceeding papers. He has won several research awards including the National Science and Technology Forum Award in South Africa. His research focuses on the hydrometallurgical extraction of metal from solid phases, prediction of pollutants dispersion from industrial areas, and development of effective and sustainable methods for the removal of inorganic and organic pollutants from polluted water. Soumya Pandit, PhD, is a senior assistant professor at Sharda University, Greater Noida, Delhi, India. He pursued his doctoral studies from the Department of Biotechnology, Indian Institute of Technology, Kharagpur in 2015. He has authored more than 70 research and review papers in peer-reviewed journals, and his research areas include microbial electrochemical systems for bioenergy harvesting, bacterial biofilm and biofouling study, biohythane production, microalgal biomass production for biofuel, nanomaterial synthesis and application in bioenergy harvesting and biofouling mitigation.

• 1 A Comprehensive Review of Graphitic Carbon Nitride (gcn/gc 3 N 4) as a Promising Photocatalyst 1Pragna M. Shivannavar, Chiranth Srirangapatna Puttasrinivasa, Sharmila Suresh, Charan Kumar Kachintaya, Lingaraju Honnur Gurusiddappa, Supreeth Mohan Kumar and Shankramma Kalikeri1.1 Introduction 21.2 GCN as a Photocatalyst 31.3 GCN Modification to Act as a Photocatalyst 81.4 GCN-Based Nanocomposites as a Photocatalyst 121.5 Conclusion 181.6 Future Perspectives 19References 192 Nanocomposites for Pharmaceutical Waste Degradation: A Remediation Tool 27Sharmila Suresh, Pragna M. Shivannanavar, Ravikumara Moodalakoppalu Yogarajachari, Shankramma Kalikeri, Charan Kumar Kachintaya and Lingaraju Honnur Gurusiddappa2.1 Introduction 282.2 Pharmaceutical Waste Degradation 292.3 Conclusion 422.4 Future Perspectives 42References 433 Nanostructure Metal Sulfides for Photocatalytic Water Remediation 49Shuvendu Tripathy, Medha Kiran Patel, Ipsita Bose, Soumya Pandit and Santimoy Khilari3.1 Introduction 503.2 General Working Principle and Important Parameters for Photocatalysis on Metal Sulfide 543.3 Different Types of Metal Sulfide Photocatalysts: Monometallic Sulfides, Multimetallic Metal Sulfides, and Metal Sulfide Heterostructure 553.3.1 Monometallic Sulfides 563.3.2 Multimetallic Sulfides 563.3.3 Metal Sulfide Heterostructures 563.4 Copper Sulfide as Photocatalyst for Water Remediation 563.5 ZnS as a Photocatalyst for Water Treatment 603.6 FeS as a Photocatalyst for Water Remediation 643.7 Conclusion 68References 684 Metal–Organic Framework as Potential Candidates for Photo-Electrocatalysis 73Isha Soni and Gururaj Kudur Jayaprakash4.1 Introduction 734.2 Photocatalysis 744.2.1 Photocatalyst 764.3 Electrocatalysis 804.3.1 Electrocatalyst 824.4 Photo-Electrocatalysis 834.4.1 Photo-Electrocatalyst 854.4.2 MOFs 864.4.2.1 Sensing and Degradation of Pollutants 884.4.2.2 Co 2 Reduction 914.5 Comparison of Photocatalysis, Electrocatalysis, and Photo-Electrocatalysis 954.6 Conclusion and Future Aspects 96References 985 A Review on Photocatalytic Fuel Cell (PFC) for Sustainable Wastewater Treatment and Renewable Energy Production 103Soumasree Chatterjee and Elvis Fosso-Kankeu5.1 Introduction 1045.2 Photocatalysis 1055.2.1 Theory 1055.2.2 Mechanism 1065.3 Photocatalytic Fuel Cell 1075.3.1 Theory 1075.3.2 Features 1085.3.3 Working Principle 1095.3.4 Design 1115.3.4.1 Single-Photoelectrode PFC 1125.3.4.2 Dual-Photoelectrode PFC 1135.3.5 Electrodes 1175.3.5.1 Photoanode 1175.3.5.2 Photocathode 1185.3.5.3 Wastewater Treatment and Pollutant Degradation 1195.3.6 Electricity Generation 1295.4 Conclusion 129Declaration of Interest 130References 1306 Remediation of Wastewater through Photo-Induced Catalytic and Electrochemical Hydrogen Production 139Ramgopal Tiwari, Ajayrajsinh R. Zala and Premlata KumariList of Abbreviations 1406.1 Introduction 1406.2 Mechanism of Photocatalysis 1426.3 Homogeneous and Heterogeneous Photocatalysis 1436.3.1 Homogeneous Photocatalysis 1436.3.1.1 Fenton Reaction 1436.3.2 Heterogeneous Photocatalysis 1456.3.2.1 Photocatalytic Materials 1466.3.2.2 Applications of Photocatalytic Processes 1476.3.3 Photoelectrochemical Approach in Wastewater Treatment 1526.4 Conclusion 1546.5 Challenges and Future Aspects 154References 1557 Recent Advances on the Electrode Materials Used in Microbial Fuel Cell for Simultaneous Power Generation and Wastewater Treatment 161Ankit Kumar, Soumya Pandit, Shikha Singh and Chetan Pandit7.1 Introduction 1627.2 Introduction to MFC 1637.3 Electrode Material 1647.4 Anode Material 1657.4.1 The Traditional Carbon-Based Anode Material 1657.4.1.1 Granular Carbon 1667.4.1.2 Stainless Steel 1687.5 Carbon Nanotubes (CNTs) and Composite Anode Material 1687.5.1 Graphene 1737.5.2 Other Methods for Anode Surface Modification 1767.6 Cathode Material 1797.6.1 Abiotic Cathode 1807.6.2 Biocathode (Biotic Cathode) 1817.6.3 Cathode with Pt-Based Catalyst 1837.6.4 Cathode with Non–Pt-Based Catalyst 1837.7 Conclusion 184References 1858 Extensive Use of Photocatalysis and Photoelectrochemical Methods for Wastewater Reclamation 189Namrata Khanna, Tanushri Chatterji, Virendra Yadav, Tanya Bhagat, Shalini Sharma and Sadanand PandeyAbbreviations 1908.1 Introduction 1918.2 Mechanism Describing the Photoelectrochemical Processes 1928.3 Photoelectrocatalysis 1938.3.1 Types of Photocatalysts 1988.3.1.1 Metal Oxides 1988.3.1.2 Modified or Doped Metallic Oxides 2008.4 Applications of Modified Photocatalysts 2008.4.1 Removing Organic Dyes Present in Wastewater 2008.4.2 Removal of Emerging Contaminants (ECs) from Wastewater 2028.4.3 Photocatalytic Degradation of Phenols 2038.4.4 Anti-Microbial Efficacy of Treatment by Photocatalysts 2068.4.5 Innovative Catalysts for Removal of Herbicides 2118.5 Solar/Photoelectro-Fenton Process 2158.6 Photocatalytic Fuel Cells (PFCs) and Their Relevance in Minimizing Use of Electrical Procedures 2188.7 Photo Electro Peroxone Technique 2198.8 Treatment of Real Wastewater Treatment by Photoelectrochemical Processes 2208.8.1 Treatment of Landfill 2208.8.2 Oil Mill Effluents 2228.8.3 Pharmaceutical Waste 2228.8.4 Textile Industry 2238.8.5 Tannery Effluents 2248.9 Trends and Conclusion 224References 2259 Solar-Driven Photoelectrochemical Technologies for Wastewater Treatment and Green Hydrogen Production 245Mohamed Mahmoud9.1 Introduction 2469.2 Photoelectrochemical Catalysts 2489.3 Photoelectrochemical Cell Design and Operation for Wastewater Treatment 2499.4 Application of Photoelectrochemical Systems for Real Wastewater Treatment 2519.5 Hydrogen Production During Photoelectrochemical Treatment of Wastewater 2549.6 Conclusions 256Acknowledgments 257References 257Index 265