Content: Wastewater Treatment Technologies and Recent DevelopmentsRaja Sivashankar, Arunachalam Bose Sathya, and Velmurugan SivasubramanianNanotechnology in Environmental ApplicationsKuravappullam Vedaiyan Radha and Pandiyan ThyriyalakshmiGreen Synthesis of Ecofriendly Nanoparticles and Their Medical ApplicationsSahadevan Renganathan, George Philomin Doss Geoprincy, and Patchaimuthu KalainilaRole of Phytoremediation in Maintaining Environmental SustainabilityRenganathan Sahadevan, Bhargavi Gunturu, and Dharmendira Kumar MahendradasAlgal Biosorption of Heavy MetalsM. Jerold, C. Vigneshwaran, A. Surendhar, B.G. Prakash Kumar, and Velmurugan SivasubramanianCurrent Developments in Mass Production of Microalgae for Industrial ApplicationsS. Ramachandran, P. Sankar Ganesh, Velmurugan Sivasubramanian, and B.G. Prakash KumarIntegrated Biological System for the Treatment of Sulfate-Rich WastewaterK. Vasantharaj, Raja Sivashankar, C. Vigneshwaran, and Velmurugan SivasubramanianEnhancement of Anaerobic Digestion of Pharmaceutical EffluentJ. Kanimozhi, Arunachalam Bose Sathya, Anant Achary, and Velmurugan SivasubramanianTreatment of Textile Dyes Using Biosorption and Bioaccumulation TechniquesRenganathan Sahadevan, Saravanan Panneerselvam, Baskar Gurunathan, Vijay Mani, and Shyamasundari MuruganProduction of Biosurfactants and Its Application in BioremediationC. Vigneshwaran, K. Vasantharaj, M. Jerold, and Velmurugan SivasubramanianBiodegradable Polymers: Recent PerspectivesArunachalam Bose Sathya, Raja Sivashankar, Velmurugan Sivasubramanian, and Arockiasamy SanthiaguMicrobial Fuel Cell Technology: A Sustainable Energy Producer from a Wide Variety of Waste SourcesD. Vidhyeswari, A. Surendhar, M. Jerold, S. Bhuvaneshwari, and Velmurugan SivasubramanianRecent Advancements in Biodiesel from Nonedible Oils Using PackedBed Membrane ReactorsUma Krishnakumar and Velmurugan SivasubramanianProduction of Ecofriendly Biodiesel from Marine SourcesRenganathan Sahadevan, Ramachandran Kasirajan, and Theresa VeerananPretreatment Techniques for Enhancement of Biogas Production from Solid WastesVelmurugan Sivasubramanian, Balakrishnan Vinothraj, Veerapadaran Velumani, and Krishnan ManigandanA Comprehensive Review on Source Apportionment of Pollutants in the Atmosphere by Receptor ModelsN. Anu and N. Selvaraju