1. Uptake Hydrogenase
1) Definition of Uptake Hydrogenase and Mechanism of HydrogenProduction
Uptake hydrogenases are Ni-Fe enzymes that catalyze the conversion of hydrogen gas to hydrogen ions and electrons. They are found in the heterocysts and not in the vegetative cells of nitrogen-fixing strains of cyanobacteria. They remove the hydrogen gas produced by nitrogenase when they carry o
hydrogenproduction costs. The main technical issues for these high-temperature processes relate to materials development for corrosion resistance at high temperatures, high-temperature
membrane and separation processes, heat exchangers, and heat storage media. Design aspects and safety are also important for high-temperature processes.
-Thermo-chemical water splitting
For example, Thermo-
Introduction
Fossil fuels
- Main Energy Source
- Causing global warming
- Being exhausted
→ need
alternative energy
Hydrogen is one of well-known clean energy source.
Several technologies are already available in the marketplace for the industrial production of hydrogen.
Hydrogen can be produced from a variety of feedstocks.
A variety of process technologi
production을 확인한다.
□▪실험5
S. aureus, L. lautis 를 Plate에 배양한다. 다음 날 Hydrogen peroxide를 넣어서 발생하는 작용을 비교한다.
□▪실험6
NaCl이 5%, 10%, 15% 들어 있는 plate와 Glucose가 5%, 10%, 25% 들어있는 plate에 각각E.coli와 S. aureus를 넣고 하루 동안 배양한다. 각각의 삼투압 차이에 따른 Organisms의
products가 되었다. 그리고 ABE 발효는 hydrogen, isopropanol, acetic, lactic, propionic and butyric acids, carbon dioxide, 그리고 lipids의 많은 부산물들을 만들어냈다. 따라서 주요한 발효산물들은 분리될 필요가 있었는데 이러한 부산물들을 제거함에 따라 butanol을 얻는데 필요한 비용의 증가를 초래하였다. 뿐만 아니라 1960
Hydrogen fueled cars would be alternatives for current cars.
3) Hybrid cars
Compared to Gasoline-Diesel cars, superiority of hybrid cars appears apparent. Gasoline-Diesel’s 18~23% of average efficiency energy means that most energy is lost with heat loss. Additionally, in case of driving in low speed, the fuel efficiency is very low. On the other hand, enhanced energy efficiency through ele
③ 항생제를 이용한 미생물 성장 조절
Antibiotic sensitivity 는 박테리아의 antibiotics 에 대한 감수성을 표현하는 것으로 Antibiotic susceptibility testing(AST)는 antibiotic이 bacterial 감염에 대해 효과적인 가를 결정하는데 사용한다. 이를 위한 실험에는 Kirby-Batuer method, Disk diffusion method가있다. 그리고 Liquid dilution test
Sulfur Dioxide(SO2)
The release of SO2 to the atmosphere is the primary cause of acid rain in the world.
Fossil fuel combustion at electric power-generating plants accounts for about70% of
the emissions.
Coal, Oil, and all other fossil fuels naturally
contain some sulfur.
Volcanic eruptions are another more localized natural source of SO2
SO2 + OH. HSO3.
HS
환경경영 전략 수립 배경
자동차 산업계
자동차 성능개선에만 치중
점차 세계적으로 환경문제 대두
자원의 효율적 활용,
환경오염물질 배출 최소화를 위한
노력이 시작
환경 경영 방침
2003년 ‘글로벌 환경경영 이념과 방침’ 선포
경제발전과 환경보존의 두 가치가 조화를 이루고 성장