The food industry is one of the main drivers of environmental degradation due to the substantial waste and pollutants generated during the traditional methods of food production. Environmentally friendly food processing techniques endeavor to use as little energy, produce as little waste and utilize as little potentially harmful compounds as practicable. To accomplish sustained zero-waste growth, bio-refining food waste may be useful. Techniques for agro-waste biorefinery urgently need a circular economy and contribute to a low-carbon, greener environment that is environmentally benign, commercially and economically feasible, and universally accepted. This chapter discusses environmentally favorable food processes and biorefineries, which may improve food quality while using less energy and generating less waste. Each of these technologies has the potential to improve food quality, accessibility and nutrition while lowering our effect on the environment globally. Finally, the chapter will conclude with a brief integration of information on those areas that are critical for assessing the quality, consumer acceptability and safety of foods produced using 3D printing. By the end of this chapter, readers will have a greater understanding of each technology, as well as an understanding of how it is presently being used to create a more sustainable and equitable food system.