[유기성 자원화] Undaria pinnatifida의 중금속 이온 흡착제로서의 특징

서명순,김동수 한국폐기물자원순환학회 2004 한국폐기물자원순환학회 학술대회 Vol.2004 No.1

무기 및 건설 폐기물 처리 재활용 : 영가철을 환원제로 한 유기염소계 화합물의 탈염화 반응 메커니즘

서명순,강현주,송정민,전민선,김동수 한국폐기물자원순환학회(구 한국폐기물학회) 2007 한국폐기물자원순환학회 추계학술발표논문집 Vol.2007 No.-

[무기 및 건설 폐기물 처리 재활용] 영가철을 환원제로 한 유기염소계 화합물의 탈염화 반응 메커니즘

서명순,강현주,송정민,전민선,김동수 한국폐기물자원순환학회 2007 한국폐기물자원순환학회 학술대회 Vol.2007 No.1

칡을 이용(利用)한 크롬페수(廢水) 흡착(吸着) 처리(處理) 특성(特性)

서명순,김동수,Seo, Myung-Soon,Kim, Dong-Su 한국자원리싸이클링학회 2008 資源 리싸이클링 Vol.17 No.3

The kudzu has been investigated as an adsorbent for treatment of Cr(VI)-containing wastewater. The specific surface of kudzu was analyzed to be $189.91m^2/g$ and its major composition were found to be nitrogen and oxygen. It was observed that adsorption reaction for Cr(VI) on kudzu meets 1st order in kinetics and Langmuir Model in equilibrium. As the pH of wastewater was increased, the adsorbed amount of Cr(VI) onto kudzu was increased due to the pre-combination of $OH^-$ with adsorbent and the efficiency of adsorption was found to be 60% when real electroplating Cr(VI)-containing wastewater was applied. 칡을 크롬폐수 처리에 있어 흡착제로서 활용하는 방안에 대한 연구를 수행하였다. 칡은 대부분 질소와 산소로 이루어져 있고 칡의 비표면적은 약 $189.91m^2/g$으로 나타났다. 칡에 대한 Cr(VI) 의 흡착은 8시간 이내에 이루어졌으며 칡에 대한 Cr(VI)의 흡착은 Langmuir Model을 따르는 것으로 파악되었다. 또한, 흡착제의 크기가 작을수록 Cr(VI)에 대한 초기 흡착반응이 빠르게 진행되고 평형 농도 또한 낮게 나타나는 것을 관찰할 수 있었고 반응 초기 시간에 따른 칡에 대한 Cr(VI)의 흡착은 1차 반응을 비교적 잘 따르는 것으로 파악되었다. 한편, 염기성 상태에서의 Cr(VI)은 수중의 $OH^-$와 결합하여 흡착반응에 유리한 형태로 전환되어 칡에 대한 흡착을 도모하는 것으로 검토되었으며 실제 도금폐수의 Cr(VI)의 처리에 칡을 흡착제로 적용한 결과 약 60%의 Cr(VI)이 흡착 제거되는 것으로 파악되었다.

폐기된 해조류를 이용한 납 이온의 흡착 특성

서명순,김동수,Seo Myung-Soon,Kim Dong-Su 한국자원리싸이클링학회 2004 資源 리싸이클링 Vol.13 No.4

수산물 처리시 폐기물로 발생하는 Undaria pinnatifida 를 $Pb^{2+}$ 가 함유된 폐수의 흡착처리시 흡착제로 활용하는 방안을 검토하였다. 성분분석 결과, Undaria pinnatifida는 주로 탄화수소화합물로 구성되어 있었으며 비표면적이 상당히 높아 흡착제로서의 잠재적 활용도가 큰 것으로 파악되었다. Undaria pinnatifida 입자의 Electrokinetic Potential은 pH 8 부근에서 음의 최대값을 보였으며 전 pH 범위에 걸쳐 음으로 하전되어 양이온의 흡착에 적합한 것으로 검토되었다. $Pb^{2+}$는 실험조건에서 반응개시 수 분 이내에 대부분이 흡착되었으며 평형에 도달하는 시간은 약 30분 정도인 것으로 나타났다. 또한, Undaria pinnatifida 표면에 대한 $Pb^{ 2+}$의 흡착은 Freundlich Isotherm 을 따르는 것으로 관찰되었으며 발열반응의 특성을 확인하였다. 산에 의한 흡착제의 전처리는 흡착능을 향상시켰으나 염기로 전처리할 경우에는 오히려 흡착능이 저하되었다. Undaria pinnatifida 표면에 존재하는 작용기들과 $Pb^{ 2+}$ 와의 Organometallic Complex 형성이 $Pb^{ 2+ }$의 흡착에 주요하게 작용하는 것으로 파악되었으며, 경쟁적 흡착질의 존재, ionic Strength 의 변화, 그리고 착화합물제가 수중에 공존할 경우 $Pb ^{2+}$ /의 흡착성이 상당한 영향을 받는 것으로 관찰되었다. Basic studies have been conducted regarding the attempt of the utilization of waste Undaria pinnatifida as an adsorbent for the adsorption treatment of lead-containing wastewater. Undaria pinnatifida was found to be chiefly composed of hyo-carbonaceous compounds and have a fairly high specific surface area, which suggesting the possibility of its application as a Potential adsorbent. The electrokinetic Potential of Undaria pinnatifida particles was observed to be negatively highest at around pH 8 and the fact that its electrokinetic potentials are negative at the whole pH range supported it might be an efficient adsorbent especially for cationic adsorbates. Under the experimental conditions, $Pb^{2+}$ was found to mostly adsorb onto Undaria pinnatifida within a few minutes and reach the equilibrium in adsorption within ca. 30 minutes. The adsorption of $Pb^{2+}$ was exothermic and explained well by e Freundlich model. Acidic pretreatment of Undaria pinnatifida enhanced its adsorption capacity for $Pb^{2+}$ , however, the reverse was observed for alkaline pretreatment. The formation of organometallic complex between $Pb^{2+}$ and some functional groups on the surface of Undaria pinnatifida was considered to be one of the main drives for adsorption. Finally the adsorbability of$ Pb^{2+}$ was examined to be rather affected by several solution features such as the coexistence of other adsorbate, the variation of ionic strength, and the concentration of complexing agent.

초등학생의 스트레스와 ‘빗속의 사람(PITR) 그림’ 반응특성에 관한 연구 - 다문화아동과 일반아동 중심으로 -

서명순 사단법인 한국안전문화학회 2022 안전문화연구 Vol.- No.15

The multicultural phenomenon is expanding due to internationalization. Today, our society is changing faster and more complex than any other era in the past. Rapid changes constantly require us to adapt to the new environment. Accordingly, people are inevitably exposed to stress, and in particular, the maladaptive psychological problems of multicultural children are serious. Therefore, this study attempted to study the characteristics of the ‘Person In The Rain(PITR)’ response of elementary school students of multicultural children and general children according to gender. The subjects are 120 multicultural children and 120 general children among the first, third, and sixth graders of elementary school located in an unspecified area of Busan Metropolitan City. Students' picture data were collected from 2017 to 2019 with the help of their students, counselors specializing in elementary school, and teachers in charge. In November 2020, additional data were collected and conducted. As a measurement tool, PITR, a diagnostic tool for art therapy, was used. The research results are as follows. First, according to the analysis of the expression of people in the rain, in terms of 'face appearance and expression', both boys and girls of general children showed similar differences. However, multicultural boys responded to "partial visible" and "covered and drawn" more than twice as much as girls. In addition, multicultural boys responded the highest in "I don't feel good," showing that they were exposed to stress. Second, according to the stress level through the scoring system, general children were similar in both boys and girls. And multicultural children showed lower stress levels than general children in both boys and girls. In particular, multicultural girls showed higher normal stress levels than boys. Third, according to stress coping resources, general children showed much higher coping energy than multicultural children. The overall results showed that girls were much more adaptable to the environment than boys. As a result of the study, it is meaningful in that it is a useful tool to grasp emotional and psychological problems by knowing about children's stress level or coping ability through PITR pictures. In addition, this study will be a reference for front-line teachers. Based on the above conclusions, it will be necessary to study comparative analysis and objective analysis criteria according to the development stages of each grade in the future.

온도 응답형 지능형 미셀

서명순,이상협 한국고분자학회 2008 고분자 과학과 기술 Vol.19 No.5

커피 찌꺼기를 흡착제로 한 니켈 폐수 처리 특성

서명순,김동수 한국물환경학회 2005 한국물환경학회지 Vol.21 No.1

A feasibility study has been conducted regarding the application of waste coffee grounds as an adsorbent for the treatment of nickel ion containing wastewater. The major variables which considered to influence the adsorbability of nickel ion were its initial concentration, reaction temperature, pH, and coexisting ion. The specific surface area of coffee grounds used in the experiment was found to be ca. 39.67 m²/g, which suggesting its potential applicability as an adsorbent due to its relatively high surface area. In the experimental conditions, more than 90% of the initial amount of nickel ion was shown to adsorb within 15 minutes and equilibrium in adsorption was attained after 3 hours. The adsorption behavior of nickel ion was well explained by Freundlich model and kinetics study showed that the adsorption reaction was second-order. Adsorption was reduced with temperature and its change of enthalpy in standard state was estimated to be -807.05 kJ/mol. Arrhenius equation was employed for the calculation of the activation energy of adsorption and nickel ion was observed to adsorb on coffee grounds exoentropically based on thermodynamic estimations. As pH rose, the adsorption of nickel ion was diminished presumably due to the formation of cuboidal complex with hydroxide ion and the coexistence of cadmium ion was found to decrease the amount of nickel ion adsorption, which was proportional to the concentration of cadmium ion.

다문화아동과 일반아동의 학교생활화(KSD) 반응특성에 관한 연구

서명순 사단법인 한국안전문화학회 2022 안전문화연구 Vol.- No.17

This study attempted to study the response characteristics through the KSD picture of elementary school students, focusing on multicultural children and general children. The participants were 130 multicultural children and 130 general children in elementary schools located in Busan. As for the research data, paintings were collected with the help of cultural students and elementary school counselors and teachers in charge of the researcher's training course between 2012 and 2019, and additional recruitment was collected in 2020. As for the measurement tool, the satisfaction of school life and adaptation with friends were examined through KSD, a diagnostic tool for art therapy. As a result of this study, first, multicultural children expressed "sadiology", "non-academic", and "physiology" more than general children, and multicultural boys showed higher self-image than girls, and general girls showed the most interaction with "self-love". Second, as for the response characteristics of the questionnaire, general female children had the highest satisfaction with their teachers in school, and multicultural male children had the lowest. Third, as a result of comparing and analyzing the school life of multicultural children and general children, general female children had the highest satisfaction and general male children had the highest relationship with friends. Therefore, general male and female children had higher overall satisfaction than multicultural male and female children. As a result of this study, it is meaningful that KSD is a useful tool to identify children's adaptation and psychological problems from school life, and it will be a reference guide for teachers. Based on the above conclusions, research on standards that can objectively analyze and compare comparisons according to the development stage of each grade will be needed.

유기성 자원화 : Undaria pinnatifida의 중금속 이온 흡착제로서의 특징

서명순,김동수 한국폐기물자원순환학회(구 한국폐기물학회) 2004 한국폐기물자원순환학회 춘계학술발표논문집 Vol.2004 No.-