http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 홍순강 ( Hong Soon-gang ) (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
강창민 ( Kang Chang-min ),홍순강 ( Hong Soon-gang ) 한국환경기술학회 2000 한국환경기술학회지 Vol.1 No.1
The thermal and ultrasonic pre-treatments and anaerobic degradation test were conducted to investigate the effect on solubilization and biodegradability of microalgae. First, we analyzed the chemical characteristics of microalgae. The VS(Volatile Solid) was 87% of TS(Total Solid). Microalgae consisted of 63.5% of protein, 23.6% of carbohydrate and 16.1% of lipid, respectively. And the chemical components were 51.5% of C, 28.3% of O, 9.5% of N, 7.5% of H, and 2.0% of P, respectively. Second, we conducted solubilization test of raw algae. In thermal(95℃) and ultrasonic(20kw) pre-treatment time, respectively. The ultrasonic treatment was more effective than thermal treatment only except for carbohydrate. Third, we conducted batch test of anaerobic degradation to compare between biodegradability of treated and untreated ones. In VFA(Volatile Fatty Acid), acetic acid was only detected after thermal treatment, while ultrasonic treatment was detected acetic, propionic, butylic and valeric acid. The concentrations of total VFAs after ultrasonic treatment were higher than that after thermal treatment. Especially, the concentration of propionic acid was the highest after ultrasonic treatment. In spite of the increase of soluble material by pre-treatment, the gas and methane productivities of pretreated cases were lower than than of case. We suspect that the low methane productivity may be due to the undesirable material generated by thermal and ultrasonic treatment.
-
Alum과 Chitosan을 이용한 도축장 폐수 슬러지의 비료화 가능성 연구
송재준 ( Song Jee-june ),홍순강 ( Hong Soon-gang ),이영호 ( Lee Young-ho ) 한국환경기술학회 2000 한국환경기술학회지 Vol.1 No.2
For the sake of reusing the organic sludge into resources, we should decrease the amount of inorganic chemicals such as alum and polymer, added in the process of treating the organic wastewater. The sludge added with those inorganic coagulants has been a problem in the utilization of sludge. In this research, We performed experiment using sludge prepared with coagulants in Order to assess the possibility of reutilization of slaughterhouse wastewater. We prepared sludge by using alum, an inorganic coagulant, and chitosan, known as a harmless organic coagulant, Then, we carried out a gushing-out test on seven heavy metals (Zn, Cu, Cr, Cd, As, Hg, Pb) with the sludge we prepared. The result showed that the sludge coagulated by alum contained less heavy metals than the sludge coagulated by chitosan.
-
영산강하류의 계절 변화에 따른 수질특성과 유기인산염의 분해율에 관한 연구 1 : 부영양화를 중심으로
조기안,안병권,홍순강,정동옥 한국환경과학회 1999 한국환경과학회지 Vol.8 No.6
The work on the eutropication of Youngsan river was conducted from Jul. 1997 to Jun. 1998. The value of water temperature in the study area varied from 4℃ to 32℃ with an annual mean of 17.5℃. DO varied from 4.0㎎/ℓ to 13.5㎎/ℓ with an annual mean 10.2 ㎎/ℓ. BOD varied from 0.8㎎/ℓ to 6.4㎎/ℓ with an annual mean 3.1㎎/ℓ. COD varied from 4.6㎎/ℓ to 9.0㎎/ℓ with an annual mean 6.38㎎/ℓ. Nitrate varied from 1.58㎎/ℓ to 6.77㎎/ℓ with an annual mean of 3.475㎎/ℓ. Total-nitrogen varied from 2.14㎎/ℓ to 8.38㎎/ℓ with an annual mean of 5.083㎎/ℓ. Total-phosphate varied from 0.035㎎/ℓ to 0.588㎎/ℓ with an annual mean of 0.128㎎/ℓ. Chl.a varied from 1.8㎍/ℓ to 75.0㎍/ℓ with an annual mean of 19.55㎍/ℓ. The euthrophic state index of Carlson^16) were showed 61.8(TP) and 71(SD) value
ScienceON연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
