I. Introduction
1. What is E-waste?
E-waste are the reusable or reparable electronics and secondary scraps (copper, steel, plastic etc.) which are dumped by consumers rather than recycled, including residue from reuse and recycling operations.
2. Social problem description
Nowadays, we can buy electronics with cheap prices because of the competition among the electronic companies and we
PHB`s Separation & Purification
Target of this study conducted to obtain a purely material PHB purification process debris in the damaged cells, and to remove the remaining medium components. PHB has been removed during the refining process with just remove the present efficiency of the overall purification stayed in the 70-80%.
PHB Synthesis Pathway
Alcaligenes eutrophus PHB in normal circ
1)waste of package source material
2) burden increase of cost of transport
3)environmental pollution increase
▶9 out of 15 gift set products has exceeded packaging space ratio
▶waste of resources + environmental pollution+ Total cost↑
▶Difficult to recycle due to the use of complex materials of fabric, synthetic resins and paper.
Ⅲ. Theoretical analysis of the waste problems
We can approach to the analysis of problems to be solved at both a micro and macro level. What we will deal with is the environmental problems taking place all over China, which are characterized by a mix of pervasive influences and a number of factors. It follows that it is more appropriate to take a macro approach which enables us to see problems
2. The Necessity of sustainability
The recent research show that it demands some expenses in the first stage. But when they pass through some point, it will bring the achievements of corporation.
First, the sustainability is a flow in this period that can not be ignored and the essential factor to compete in this field. The playstaion in Sony lost more than 200 million dollars when the Cadmium,