This chapter presents discussion of four selected case studies for sustainable carbon capture. The first case study is a high-level techno-economic integration study for CO2 capture in the waste to energy (WtE) sector, which may result in negative emissions, as a large part of the CO2 is biogenic. Integration of CO2 capture in this sector is essential when the need for district heating is low and/or heat is available at a relatively low price. The second case study describes a groundbreaking techno-economic integration study for CO2 capture on board ships, also called ship-based carbon capture (SBCC). The study considers the operational profile of the ship and uses the available heat integration options to minimize the costs of the process. The third case study entails the techno-economic evaluation of integrating carbon dioxide capture with a biogas facility for biogas upgrading to biomethane. The integrated cycle offers carbon-neutral energy with the potential for negative emissions by storing carbon dioxide underground. The final case study is related to the carbon capture applications in the cement and iron/steel sector. This Page is compulsory Book Title – Sustainable Carbon Capture: Technologies and Applications Chapter Author(s) Jasper A. Ros, TNO, The Netherlands, jasper.ros@tno.nl Juliana G.M-S. Monteiro, TNO, The Netherlands, Juliana.monteiro@tno.nl Earl L.V. Goetheer, TNO, The Netherlands, earl.goetheer@tno.nl Randi Neerup, Center for Energy Resources Engineering (CERE), Department of Chemical and Biochemical Engineering, Technical University of Denmark (DTU), Søltofts Plads 229, 2800, Kgs. Lyngby, Denmark, rand@kt.dtu.dk Wentao Gong, Center for Energy Resources Engineering (CERE), Department of Chemical and Biochemical Engineering, Technical University of Denmark (DTU), Søltofts Plads 229, 2800, Kgs. Lyngby, Denmark, wengon@kt.dtu.dk Sai Hema Bhavya Vinjarapu, Center for Energy Resources Engineering (CERE), Department of Chemical and Biochemical Engineering, Technical University of Denmark (DTU), Søltofts Plads 229, 2800, Kgs. Lyngby, Denmark Jens Kristian Jørsboe, Center for Energy Resources Engineering (CERE), Department of Chemical and Biochemical Engineering, Technical University of Denmark (DTU), Søltofts Plads 229, 2800, Kgs. Lyngby, Denmark Sebastian Nis Bay Villadsen, Center for Energy Resources Engineering (CERE), Department of Chemical and Biochemical Engineering, Technical University of Denmark (DTU), Søltofts Plads 229, 2800, Kgs. Lyngby, Denmark Philip Loldrup Fosbøl, Center for Energy Resources Engineering (CERE), Department of Chemical and Biochemical Engineering, Technical University of Denmark (DTU), Søltofts Plads 229, 2800, Kgs. Lyngby, Denmark, plf@kt.dtu.dk Chapter Number and Title – Chapter 11, Special Case Studies in Sustainable Carbon Capture