| Summary: | 碩士 === 中原大學 === 化學研究所 === 99 === Since the development of the concept of eco-awareness and the sustainable development, the Green Chemistry has been an important issue for a while. The Green Chemistry means to use chemistry technology to design the safer chemistry agent or to replace the hazard substance used in chemical reaction or to reduce the impact of the hazard substance and the rejection to environment as far as possible.
This research goal is to employ and to popularize Green Chemistry to create a new Green General Chemistry Experiment, and to make students fully understand the operation of the experiment and the gist of the Green Chemistry in the future.
Next, this text will describe and discuss the result of Green General Experiments of the Bio-Diesel, the Candle made from fatty acid, the Egg shell chalk, and the element, Cu, which is reduced from the chemistry waste liquid of PCB (printed circuit board).
By the rapid development of economy, the energy consumption is extremely enormous, and the Bio-Diesel, which is the most popular industrial over world, is rising rapidly in that moment. The source of the Bio-diesel is come from oil, mostly invert from saturation or unsaturated fatty acid of macromolecule of animal fats and vegetable oil or waste oil. In this text combine acid and base catalyzed esterification, rapidly invert waste oil and promote the possibility of esterification, and the yield is 83%.
The sum of the waste oil is enormous in our country, so the economy value of the reclaim is infinite too, we use waste oil to make candle, promotes its economy value and reduce the pollution in the same time. Beeswax often links to Long-chain fatty acid, using Triglyceride and NaOH for saponification to form fatty acid, sodium salts, then make it and strong acid to reaction, getting insoluble fatty acid, the yield is 10%.
Chalk, made from CaSO4, is indispensable consumption in teaching, people will absorb CaSo4 when they breath, it may cause asthma, allergy and skin disease and so on, Egg shell contain 97% Caco3, after burning will release a great number of CO2, which is the principal constituent of Greenhouse gas, so we use waste egg shell to make chalk, it not only reduce the Greenhouse gas, and also lower the damage to human body. This text use egg shell, CaSO4, flour and potato flour to make chalk, and discuss about its compatibility and practicality.
Recently, semiconductor industry develops quickly, and the manufacturer of PCB is rapidly growing up too. Process of making PCB using kinds of chemical agent, and in the steps of etching, using FeCl3 to etch Cu, it will produce high potency waste liquid which is contain Cu. FeCl3 etch Cu is an oxidation reduction process, using Fe3+ oxidize Cu to form CuCl2 in waste liquid, we add iron power to reaction to lower the heavy metal pollution in the waste liquid, forming FeCl2 liquid and make Cu2+ reduction to solid, the weight of Cu in the experiment is 0.7mg.
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