Preface.- Chapter 1 Environmental issues: A challenge for waste water treatment.- Chapter 2 Green nanotechnology for the environment and sustainable development.- Chapter 3 Activated carbon from different waste materials for the removal of toxic metals.- Chapter 4 Bioremediation of toxic heavy metals using marine algae biomass.- Chapter 5 Cost effective green materials for the removal of pesticides from aqueous medium.- Chapter 6 Rice husk derived adsorbents for water purification.- Chapter 7 Treatment of dye containing wastewater using agricultural biomass derived magnetic adsorbents.- Chapter 8 Date palm as a potential candidate for environmental remediation.- Chapter 9 Research updates on heavy metals phytoremediation: Enhancements, efficient post-harvesting strategies, and economic opportunities.- Chapter 10 Adsorptive removal of toxic dyes using chitosan and its composites.- Chapter 11 Ionic liquid modified activated carbon for the treatment of textile wastewater.- Chapter 12 Adsorption of pharmaceutical pollutants using lignocellulosic materials.- Chapter 13 Titania-montmorillonite for the photocatalytic removal of contaminants from water: adsorb & shuttle process.- Chapter 14 Jet fuel from domestic wastewater treatment using microalgae: A review.<p></p><p></p>