1.천연고분자계 Naturally Occurring Polymers
(1)정의
식물에서 유래하는 것
곡물에서 추출되는 전분, 곡물의 잎이나 갈대 등에서 유래되는 cellulose, hemicellulose, pectin, lignin 등
동물에서 유래하는 것
새우,게 등 껍질을 포함한 동물에서 유래되는 키틴질과 Protein 등
이들을 천연고분자계 생분해성
Environmental factors
organic matter (source of carbon and energy)
oxygen availability
nutrient (N,S, P) availability
temperature
pH
Eh
salinity
water activity
The addition of nutrients and electron acceptors
Stimulate activities that promote degradation of pollutant by the indigenous or existing microbial populations in the contaminated area
The addition of specific metabolic ca
Ⅰ. 서론
하 폐수 처리 공정 중 질소?인 제거 시스템 내에 존재하는 미생물은 굉장히 다양하며, 이들 미생물 사이에서의 공생 또는 경쟁 관계는 공정안의 반응 메커니즘 해석을 복잡하게 만든다. 이를 해석하기 위해 IWA Task Group은 생물학적 영양염류 제거 공정에서 주요한 제거 대상이 되는 C, N, P를
2. Motivation
1) 높아지는 바이오폴리머에 대한 관심
바이오폴리머란 재생가능한 유기자원으로부터 만들어지는 고분자 물질을 말하는데, 대개의 경우 생분해성을 갖기 때문에 ‘bio-based’이자 ‘biodegradable’하다고 정리할 수 있다. 이들은 자연계의 자원으로부터 만들어지고, 사용 후엔 자연계 내의
biodegradable. Liang, a clerk with Sams Club, told Shenzhen Daily yesterday that the club required the Miandianwang outlet to do so in its contract.
According to Liang, all the departments in the club switched to biodegradable containers during the Spring Festival holiday.
Zhao Hua, with the energy division of the Shenzhen Municipal Economic Development Bureau, one of the five municipal governm
for cancer and other diseases.
Liposomes are composite structures made of phospholipids and may contain small amounts of other molecules.
Nano-particle drug carriers
Nano-particles are colloidal particles that range in size from 10 to 1000 nm in diameter, and are formulated using biodegradable polymers5-10 in which a therapeutic agent can be entrapped, adsorbed, or chemically coupled.
Nano cellulose fiber
높은 가스차단성
식물의 구성요소이므로 자연친화적
생분해성 (biodegradability)
Nano scale (직경 5~10nm, 길이 ~1000nm)
재생 가능
인체에 무해
생산공정이 간단
(NMMO에 녹여 추출)
사용된 용매 또한 재활용 가능
폭넓은 응용분야
1. Justifications of the proposed schemes -the structural problem& the chemical injection locations
2. Design impeller and tank type affecting energy efficiency, cost, flocculation size. Design Diffuser Walls and Baffles used for Minimizing Short Circuiting
3. Design launder type, structure, sludge and scum model
Filtration의 세번째 key concept 이유: (to promote readily biodegradabl
to facilitate controlled drug release need to be considered during manufacture of the nanoparticles. Ideal conditions, or wish-list, of any drug are difficult to meet simultaneously. As for nanocarriers to serve as good candidates for drug delivery across the BBB can be summarized as follows.
- particle diameter less than 100 nanometers;
- non-toxic, biodegradable and biocompatible;
unstable compared to general fuel cell.
The need for MBFC
Waste processing caused sludge reduction.
Energy saving by generation of electron power
Technology leadership of first stem form development
Non-combustibility.
( Diesel – 63℃ Biodiesel – 150℃ )
Net COx output is very low.
Biodegradability is very High.
( Degradable 90% in 3 weeks. )