Green Nanotechnology in Automobiles- Mechanical Seminar Report

GREEN ENGINEERING:

Green Engineering is the design, commercialization and use of processes and products that are feasible and economical while:
Reducing the generation of pollution at the source.
Minimizing the risk to human health and the environment.
Green engineering embraces the concept that decisions to protect human health and the environment can have the greatest impact and cost effectiveness when applied early to the design and development phase of a process or product.

The principles of green engineering are as follows:

1) Engineer processes and products holistically, use system analysis and integrate environmental impact assessment tools.
2) Conserve and improve natural ecosystems while protecting human health and well being.
3) Use life cycle thinking in all engineering activities.
4) Ensure that all material and energy inputs and outputs areas inherently safe and benign as possible.
5) Minimize depletion of natural resources.
6) Strive to prevent waste.
7) Develop and apply engineering solutions, while being cognizant of local geography aspirations and cultures.
8) Create engineering solutions beyond current and dominant technologies; improve, innovate and invent (technologies) to achieve sustainability.
9) Actively include communities and stakeholders in development of engineering solutions.

GREEN NANOTECHNOLOGY

Green nanotechnology is the development of clean technologies, “to minimize potential environmental and human health risks associated with the manufacture and use of nanotechnology products, and to encourage replacement of existing products with new nano-products that are more environmentally friendly throughout their lifecycle.”
Nanotechnology is an emerging field that has great potential for use in commercial, defence and security applications. Nanomaterials and the manufacturing techniques used to create them, however, may pose adverse environmental, health and safety effects. One of the
challenges facing this new industry is the design of nano-materials and nano-manufacturing methods that provide maximum efficiency while minimizing these hazards. Merging green chemistry and nano-science will provide opportunities to meet these challenges and to
develop sustainable technologies and materials.

Our goals are to implement the principles of green nano-science to:

(1) Design environmentally benign nano-particles, test for putative toxicity and redesign as necessary; we are developing methods to prepare libraries of functionalized metal nano-particles in which the size, shape and functionality can be widely varied. We will study the accumulation of nano particles within organisms and the impacts of these nano particles on viability, gene expression and development. These data will be used to guide the development of more benign nano particles for a wide range of applications. The surface of these nano particles will be modified which will direct self-assembly, tune electronic or optical coupling, and further enhance the biologically safety of these nano particles.

(2) Develop greener methods for large-scale nano-particle production through green nano-manufacturing technologies; we will identify acceptable nano particle formation reactions that can be carried out in a single solvent phase and that will permit control of particle size.
From these studies we will scale up production and develop an integrated micro-reactor platform for deploying the single solvent phase chemistry. We are also exploring gas phase production of ceramic nano particles in micro-reactors to produce materials that should expand our capabilities to produce novel devices for sensors and medicine.

(3) Discover efficient approaches for using nano particles in the development of novel nano devices; Nano materials are driving innovation in optical and electronic devices, however, realizing the full potential of nano scale matter in device technologies requires the integration of the nano-scale building blocks with other components of the device. Nano structures can also be important precursors in the low-cost and greener manufacture of more traditional micro scale devices and to exotic new materials. Thus, developing environmentally-benign assembly methods and identifying approaches to interface nano materials with macroscopic structures are being explored to produce greener, high performance devices and nano structured materials.

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Green Nanotechnology Seminar Report For Mechanical Students