• 제목/요약/키워드: Dying Process

검색결과 91건 처리시간 0.035초

Nanofiltration of Dyeing Wastewater Using Polyamide Ro-Membranes after the Pretreatment with Chemical Coagulants

  • Hwang Jeong-Eun;Jegal Jonggeon;Mo Joonghwan;Kim Jaephil
    • Korean Membrane Journal
    • /
    • 제7권1호
    • /
    • pp.58-66
    • /
    • 2005
  • Nanofiltration (NF) of a dyeing wastewater was carried out using polyamide NF-membranes. Before applying the wastewater to the membrane process, it was pretreated with various chemical coagulants such as alum, ferric chloride and HOC-100A. In order to see the effect of the pretreatment of the wastewater using chemical coagulants on the membrane separation process, the optimum conditions for the coagulation and sedimentation process using the chemical coagulants were sought. By the pretreatment, despite the different coagulants used, the chemical oxygen demand (COD) and UV-absorbance of the wastewater were lowered by more than $70\%$. The pretreated wastewater was then applied to the membrane process. The effect of the coagulants used for the pretreatment on the membrane fouling was studied. From this study, it was found that the HOC-100A was the best out of the coagulants used far the removal of the materials that could cause membrane fouling.

Bio-drying 공법을 이용한 음식물류 폐기물 분해 특성 평가 및 고형연료로서의 가치 평가 (Estimation of Characteristics Treatment for Food Waste and Valuable as Solid Refuse Fuel (SRF) using Bio-drying Process)

  • 정철진;박세용;오두영;장은석;송형운
    • 유기물자원화
    • /
    • 제25권1호
    • /
    • pp.23-33
    • /
    • 2017
  • 본 연구에서는, 높은 함수율을 가진 음식물류 폐기물을 Bio-dying 공법을 이용하여 처리하였을 때 수분과 유기물의 변화정도를 분석하였으며 음식물류 폐기물 처리 시 온도와 염도가 Bio-dying 공법의 운전특성에 미치는 영향을 평가하였다. 또한, Bio-drying 후 분해산물의 SRF(Solid Refuse Fuel)로서의 가치 평가를 위한 펠렛 제조의 최적조건 도출 및 SRF의 발열량 분석을 통한 고형연료로서의 가치를 평가하였다. 그 결과, 1일 투입량에 따른 온도, $CO_2$ 농도, 유기물 제거율과 무게 감소율 값을 분석하였다. 유기물 제거율과 무게 감소율은 투입량 2.4 kg/day에서 각각 86%, 68%로 최대값을 나타내었다. 이를 통해 최적 음식물류 폐기물 투입량은 2.4 kg/day라 판단되었다. 펠렛 성형 결과, 원료 함수율이 10~25% 이내에서 펠렛 제조가 가능하고, 외형유지와 강도면에서 가장 좋은 품질결과를 보여준 함수율 25%가 가장 적합하다고 판단되었다. Bio-drying 후 분해산물의 SRF 고위발열량은 3,500 kcal/kg 이상의 값을 나타내었다.

조력사망에 관한 프랑스의 입법 동향 (Legislation on Aid in Dying in France)

  • 이지은
    • 의료법학
    • /
    • 제25권1호
    • /
    • pp.193-222
    • /
    • 2024
  • 세계적 추세에서 볼 때, 환자의 존엄사에 대한 논의는 연명의료중단의 문제에서 점차 조력사망의 허용 여부와 그 요건에 대한 문제로 진행되고 있다. 미국의 여러 주와 캐나다, 벨기에, 네덜란드 등 서구유럽 국가에서는 의사의 조력을 통하여 사망시기를 앞당기는 치료를 제도화하였다. 프랑스에서는 오랜 시간 동안의 문제 제기와 검토 끝에, 다른 유럽 국가에 비해서는 완만한 속도로 관련 법제에 대한 논의가 이루어지고 있다. 프랑스에서는 20세기 후반부터 존엄사에 대한 사회적 논의와 입법적 시도가 활발히 이루어져 왔다. 2005년의 레오네티 법에 의해 환자의 의사에 반하는 무의미한 치료의 지속이 금지되었고 2016년 클레이-레오네티 법 이후 환자에게 강도 높고 지속적인 진정제를 사망시까지 투여하는 것을 합법화하였다. 그러나 이웃하는 다수의 유럽국가와 달리 프랑스에서는 사망 시기 자체를 앞당기는 처치는 환자가 원한다고 하여도 여전히 금지되고 있다. 임종기의 환자가 의사의 조력을 받아 고통 없이 사망에 이르는 것을 허용할 것인가에 대한 실존적이고 보편적인 질문이 최근 중요한 문제로 부각되면서 다수의 국회의원들이 조력사망을 합법화하는 내용의 법률안을 제출하였다. 이 논문에서는 프랑스에서 존엄한 죽음에 대한 환자의 권리(droit de mourir dans la dignité)와 관련하여 전개된 입법과정을 살펴보고 최근 조력사망의 합법화를 시도하는 프랑스의 법률안들을 우리 연명의료결정법 개정안과 비교·검토하고자 한다.

편직물 Blouse의 (땀)에 대한 염색견로성에 대한 연구 (Studies on the Colorfastness to Perspiration of Knitted Blouse)

  • 이원자
    • 대한가정학회지
    • /
    • 제11권3호
    • /
    • pp.285-298
    • /
    • 1973
  • The colorfastness of dying persipiration and laundry on summer clothing must be considered, because it has special relation to the human body. The colors of fibers as cotton, p/c, acryl, polyester and nylon which have been widely used for blouse and T-Shirt of Knitted wear are R-P, Y-G, BI-B and print. Studies were carried out with persipirometer, for the natural fiber of cotton the chemical one of nylon, with additional stuff involved, which polluted. The experiment was conducted to colorfastness with acid solution and alkaline solution to see the alteration of color and staining of man-made persiperation. The results obtained from this experiment can be summerized as follows. 1. The order of color alteration isnylon < p/c < coton < polyester < acryl, and the nylon shows the lowest colorfastness, which is 3 class, and the acrly shows the highest colorfateness, which is 5 class. The staining of multifiber test of cotton fabric is nylon < p/c < polyester < cotton < acryl. The staining of multifiber of nylon fabric is nylon polyester < p/c < cotton < acryl. 2. In acid solution and alkaline solution, the alteration of color and staining makes almost no difference, but concerning staining of cotton, the acid solution is lower than the case of alteration solution only. 3. In the pollution on cotton and nylon, the latter is more easily polluted than the former regardless of fabrics. Especially in case of polluted nylon, ti shows the lowest color fastness (2 class), which causes a problem of the dying process and dye stuffs. 4. No difference of color alteration shows among them, but R-P and print show low color fastness (2 class), especially printed nylon shows the lowest value (1 class).

  • PDF

면섬유염색폐수의 공정별 폐수성상과 이온화가스에 의한 처리특성 (Composition of Cotton Textile Dyeing Process Wastewater and its Treatment Characteristics by Ionized Gas)

  • 임경은;정팔진;권지영;이은주
    • 한국물환경학회지
    • /
    • 제23권3호
    • /
    • pp.303-308
    • /
    • 2007
  • Three types dyeing wastewater (dark, medium, light color) discharged from cotton textile dyeing with reactive dye was collected at each step of process. Each process dying wastewater was analyzed and treated by ionized gas. The analysis focused on $COD_{Cr}$, SS and color. Bleaching & scouring process wastewater has the highest $COD_{Cr}$ value in the three type dyeing wastewater. SS shows the highest value at dyeing process wastewater in dark and medium color but light color has at finishing process wastewater. The result of process wastewater treatment by ionized gas was that the ionized gas was effective in $COD_{Cr}$ removing of bleaching & scouring process and finishing process wastewater but was not good at dyeing process wastewater. From that result it is estimated that the ionized gas could not work in opening the aromatic ring and react only in aliphatic component of the molecule. Because the surfactants contained in bleaching & scouring process and finishing process wastewater have only one aromatic ring in its molecular structure, in contrast with the reactive dye compounds consist of aromatic rings great part of its molecular structure. The color almost removed in 1.5 hrs reaction time but $COD_{Cr}$ removal effiency was only 30.7% through 3hrs in 1500 mL of total dyeing wastewater treated by 10 L/min ionized gas.

호스피스 환자와 가족을 위한 임종교육 시청각 자료 개발 (Development of Audio-visual Aids of Death Education for Hospice Patients and Their Families)

  • 서미숙;강유정;윤지윤;김태연;조혜준;박소연;이시연;장지혜;김유진;강믿음
    • Journal of Hospice and Palliative Care
    • /
    • 제19권3호
    • /
    • pp.240-248
    • /
    • 2016
  • 목적: 호스피스완화의료의 목적은 환자와 가족의 고통을 줄이고 삶과 죽음의 질을 향상시키는데 있다. 편안한 임종을 맞이하는 것은 죽음의 질을 향상시키는데 역할을 한다. 이를 위해 환자와 보호자는 남은 삶 동안 임종을 준비할 수 있도록 임종과정 중 발생하는 다양한 문제와 요구에 대한 이해가 필요하다. 따라서 호스피스 환자와 가족을 위한 매뉴얼화된 임종교육 시청각 자료를 개발하고자 한다. 방법: 시청각 자료 개발을 위해서는 문헌고찰을 토대로 접근하기 쉬운 파워포인트 유인물로 초기 교육자료 개발하였고 다섯 차례에 걸친 전문의의 자문과 수정 및 보완, 평가 과정을 거쳐 완성하였다. 결과: 호스피스 환자와 가족들을 대상으로 한 시청각 교육자료는 3차시 5단계로 분류하였으며 교육 소요시간은 총 26분 34초이다. 최종 교육프로그램은 시청각 교육실 협력 하에 촬영하였으며 시청각 자료를 완성하였다. 결론: 본 연구는 완화의료병동의 구축과 전문성 증대를 위해 개발된 매뉴얼화 된 임종교육 시청각 자료로써 큰 의의가 있으며, 호스피스 환자와 가족뿐 아니라 호스피스 영역 전문 종사자들이 호스피스 환자와 가족을 대상으로 효율적인 임종교육 자료로 적극 활용되길 기대한다.

말기 암환자의 체험에 관한 현상학적 연구 (Lived Experience of patients with Terminal Cancer : Parses Human Becoming Methodology)

  • 이옥자
    • 대한간호학회지
    • /
    • 제25권3호
    • /
    • pp.510-537
    • /
    • 1995
  • Human health is an integral part of experience in the process of Human Becoming. Through continual interaction with the environment human beings freely choose experience and develop as responsible beings. The process of the health experience of patient with terminal cancer is a unique. he objective of this study is to understand the lived experience of patients with terminal cancer in order to provide basic information for nursing care in the clinical setting and to develop a theoretical background for clinical practice. This study is to de-scribe and define the lived experience of patients with terminal cancer in order to provide a foundation for nursing research and education. Data collection has been done between December 1993 and November 1994. The subjects included five persons -four females and one male : one who was in her sixties, one in his fifties, two in their forties, and one who was in her thirties. The researcher has met with these patients 35 times, but at eight times the patient was in a stuporous condition and not able to participate, so these were not included in the data analysis. Parse's "Human Becoming Methodology", an existential phenomenological research methodology is used for this study. Data has been collected using he dialogical engagement process of "I and You", the participant researcher and the participant subject. Dialogical engagement was discontinued when the data was theoretically saturated. Data was analyzed using the extraction - synthesis and heuristic interpretation. The criteria of Guba and Lincoln(1985). and Sandelo wski(1986) : credibility, auditability, fitness and objectivity were used to test the validity and reliability of the data. The following is a description of the structure of the lived experience of patients with terminal cancer as defined by this study : 1. Structure : 1) Suffering through the reminiscence of past experience 2) The appearance of complex emotions related to life and connectedness 3) The increasing importance of significant people and of the Absolute Being 4) The increasing realization of the importance of health and belief 5) Desire for a return to health and a peaceful life or for acceptance of dying and a comfortable death In summary the structure of the lived experience of these patients can be said to be : suffering comes through reminiscence of past experience, and there are complex emotions related to life and connectedness. Significant people and the Absolute Being become increasingly important along with a realization of the importance of health and faith. And finally there is a desire for either a return to health and a peaceful life or for the acceptance of dying and a comfortable death. 2. Heuristic Interpretation : Using Parse's Human Becoming Methodology, the structure of the lived experience of patients with terminal cancer identified in this research is interpreted as. The lived experience of patients with terminal cancer involves the solving of past conflicts, and the experience of the healing and valuing of sorrow and pain. Through the relation of life and health, and the complex emotions that arise, the lived experience of revealing - concealing is of paradoxical emotions. The increasing importance of significant others and of the Absolute Being shows Connecting and Separating an on- going process of nearness and farness. Revision of thoughts about health and faith is interpreted as transforming and desire for restoration to health and a peaceful life or acceptance of dying and a cowfortable death, as powering. In summary, it is possible to see, in the lived experience of patients with terminal cancer, the relationship of the five concepts of Parse's theory : valuing, revealing -concealing, connecting-separating, transforming, and powering. From Parse's theory, the results of this study show that meaning is related to valuing, rhythmicity to revealing-concealing and connect-ing-separating, and cotranscendence to transforming and powering.

  • PDF

오디의 안토시아니딘에 구리를 이용한 착화합물 합성 및 상주실크에 천연염색 (Analysis of Anthocyanidin in Mulberry of Cu Complex Compound and Natural Dyeing on Sangju Silk)

  • 이광우
    • 한국산업융합학회 논문집
    • /
    • 제13권4호
    • /
    • pp.191-196
    • /
    • 2010
  • This study explores the solution of a variety of conditions of the natural dyeing with the Mulberry. To obtain this, the Cu complex compound was added into the extracts. The Mulberry extract was added the Copper acetate to obtain the Black sediment the metal complex compound of anthocyanidin. According to the result of using the complex compound of the solid material, the dyeing properties were excellent. The metal complex compound acted as a mordant, thus it reduced the process of mordanting in the natural dying.

  • PDF

막오염 저항성이 우수한 나노여과 및 역삼투막의 염색폐수 적용 (USE OF FOULING RESISTANT NANOFILTRATION AND REVERSE OSMOSIS MEMBRANES FOR DYEING WASTEWATER EFFLUENT TREATMENT)

  • Myoung, Su-Wang;Park, In-Hwan;Ka, Young-Hyun;Kim, In-Chul;Lee, Kew-Ho
    • 한국막학회:학술대회논문집
    • /
    • 한국막학회 2004년도 춘계 총회 및 학술발표회
    • /
    • pp.136-139
    • /
    • 2004
  • The dyeing effluent is a highly colored stream containing unfixed dyes along with salts and auxiliary chemicals such as emulsifying agents. Moreover, Textile dying is a chemically intensive process and consumes large quantities of water. Difficulties in the effluent treatment arise from its non-degradable property by aerobic digestion.(omitted)

  • PDF

환경영향평가에 있어서 건강위해성평가 기법의 활용방안에 관한 연구 (A Developmental Methodology of Environmental Impact Assessment: Application of Health Risk Assessment)

  • 구자건;정용
    • 환경영향평가
    • /
    • 제1권1호
    • /
    • pp.51-59
    • /
    • 1992
  • Environmental Impact Assessment(EIA) is defined as an activity designed to identify and predict the impact on the environment. In the process of an EIA, the quantitative evaluation is generally performed for the air and water quality which have the national environmental quality standards. But the predicted values for the air and water quality are simply compared to the environmental standards. At present, the EIA process of Korea has no consideration for the possible human health risk resulting from the development projects. Environmental Health Impact Assessment(EHIA) is an applied methodology of EIA to estimate the acceptable health risk caused by a specified level of environmental pollutants. Estimating the excessive lifetime risk that is a possibility of dying of a certain disease by environmental contaminants, is useful as an evaluation technique of EHIA. It is recommanded the decision-makers to make efficient use of EHIA not only the development projects but also legislative proposals, policies and programmes in future.

  • PDF