Sustainable practices are cost-saving practices! The Principles of Green Engineering are a case in point. For example, if we consider our processes from a separations standpoint to minimize stages or steps by changing solvents and operating conditions - we can save energy, raw materials and therefore operation cost. Installing recycling loops not only reduces raw materials use, it saves money. When we over design a cooling tunnel, we are wasting process time and energy. Sustainability in chemical engineering goes hand in hand with efficiency in design.

To incorporate sustainability in chemical engineering projects on a budget: 1. **Optimize Resource Use**: Conduct audits to reduce waste and improve efficiency in raw material usage. 2. **Implement Green Chemistry Principles**: Use non-toxic materials and energy-efficient processes to minimize environmental impact. 3. **Invest in Energy Efficiency**: Upgrade equipment to more energy-efficient models and use energy-saving practices. 4. **Utilize Local Materials**: Source materials locally to reduce transportation costs and emissions. 5. **Collaborate for Innovation**: Partner with other organizations or research institutions to share resources and develop sustainable solutions.