약용작물산업의 ESG 경영에 대한 연구

조완근 지속가능경영학회 2024 지속가능경영연구학회지 Vol.8 No.1

약용작물산업은 인류의 건강과 웰빙에 중요한 역할을 한다. 그러나 이는 환경, 사회, 그리 고 기업 운영의 투명성과 효율성에 대한 더 높은 요구와 함께 있다. 최근 몇 년 동안, 기업의 경영 방침과 관행을 평가하는 데 ESG(Evironmental, Social, Governance)가 강조되고 있다. 특히 약용작물산업에서는 자연환경 보호, 사회적 책임, 그리고 보건 및 안전에 대한 책임을 반영하는 측면이 더 중요하게 대두된다. 본 연구는 약용작물산업 기업의 ESG 지표 준수 현황 을 분석하여 산업의 강점과 개선점을 파악하고, 녹색경영과 지역경제 활성화를 위한 방안을 제시하고자 하였다. 이를 통해 지역사회와 기업의 상호이익을 극대화할 수 있는 전략을 모색 하였다. 초록이 없는 경우 스페이스(공백) 또는 , 을 입력하신 후 진행하시면 됩니다.

공기질 조절장치 작동 승용차 내부의 공기질 평가

조완근,박건호 한국환경과학회 1998 한국환경과학회지 Vol.7 No.5

This study examined the carbon dioxide (CO_2) pollution inside vehicles under low ventilation condition and evaluated the Air Quality System (AQS) for in-vehicle air quality using two techniques. The low ventilation condition is not recommended in order to keep oxygen-rich condition inside vehicles. Under the low ventilation condition, the in-vehicle CO_2 concentrations exceeded 1,000 ppm, the air quality guidelines in the United States, Western Europe, and Japan, indicating more oxygen deficiency inside vehicles. On the contrary, with the AQS-on condition, the in-vehicle CO_2 concentrations were less than 1,000 ppm for most of the driving time, indicating that the AQS could solve the problem of CO_2 accumulation inside vehicles under the low ventilation condition. The AQS test conducted by comparing carbon monoxide (CO) and volatile organic compound (VOC) concentrations inside two vehicles indicated that the AQS effectively decreased the in-vehicle concentrations by 21 to 36%, as compared to medium ventilation condition with the windows closed, the vent opened, and air conditioning on. In addition, The AQS test conducted by comparing the interior and exterior concentrations indicated that the AQS effectively decreased the in-vehicle concentrations by 18 to 31%, as compared to medium ventilation condition.

목욕시 Chloroform에 대한 흡기 및 피부 접촉 노출

조완근 한국환경과학회 1998 한국환경과학회지 Vol.7 No.3

Recently, bathes have been suspected to an important source of indoor exposure to volatile organic compounds(VOCs). Two experiments were conducted to evaluate chloroform exposure and corresponding body burden by exposure routes while bathing. Another experiment was conducted to examine the chloroform dose during dermal exposure and the chloroform decay in breath after dermal exposure. The chloroform dose was determined based on exhaled breath analysis. The exhaled breath concentration measured after normal baths (2.8 ㎍/㎥) was approximately 13 times higher that measured prior to normal bathes (0.2 ㎍/㎥). Based on the means of the normalized post exposure chloroform breath concentration, the dermal exposure was estimated to contribute to 74% of total chloroform body burden while bathing. The internal dose from bathing (inhalation plus dermal) was comparable to the dose estimated from daily water ingestion. The risk associated with a weekly, 30-min bath was estimated to be 1 x 10 exp (-5), while the risk from daily ingestion of tap water was to be 0.5 × 10 exp (-5) for 0.15 1 and 6.5 × 10 exp (-5) for 2.0 1. Chloroform breath concentration increased gradually during the 60 minute dermal exposure. The breath decay after the dermal exposure showed two-phase mechanism, with early rapid decay and the second slow decay. The mathematical model was developed to describe the relationship between water and air chloroform concentrations, with R^2 = 0.4 and p<0.02.

유해 할로겐화탄화수소 폐기물 처리를 위한 열분해 반응

조완근 한국환경과학회 1997 한국환경과학회지 Vol.6 No.4

The pyrolysis reactions of atomic hydrogen with chloroform were studied in a 4 cm i.d, tubular flow reactor with low flow velocity (518 ㎝/sec) and a 2.6 ㎝ i.d. tubular flow reactor with high flow velocity (1227 ㎝/sec). The hydrogen atom concentration was measured by chemiluminescence titration with nitrogen dioxide, and the chloroform concentrations were determined using a gas chromatography. The chloroform conversion efficiency depended on both the chloroform flow rate and linear flow velocity, but did not depend on the flow rate of hydrogen atom. A computer model was employed to estimate a rate constant for the initial reaction of atomic hydrogen with chloroform. The model consisted of a scheme for chloroform-hydrogen atom reaction, Runge-Kutta 4th-order method for integration of first-order differential equations describing the time dependence of the concentrations of various chemical species, and Rosenbrock method for optimization to match model and experimental results. The scheme for chloroform-hydrogen atom reaction included 22 elementary reactions. The rate constant estimated using the data obtained from the 2.6 cm i.d. reactor was to be 8.1 × 10 exp (-14) ㎤/molecule-sec and 3.8 × 10 exp (-15) ㎤/molecule-sec, and the deviations of computer model from experimental results were 9% and 12%, for the each reaction time of 0.028 sec and 0.072 sec, respectively.

인체 호흡 영역에서의 대구시 대기질에 관한 연구

조완근,손상호 한국환경과학회 1996 한국환경과학회지 Vol.5 No.1

Two experiments were conducted to evaluate breathing zone air quality in Taegu, using automatic analyzers for four air quality standards(SO_2, NO_2, CO, and O3). First, air target compounds were measured for 8 to 12 hours in each of two commercial areas and five residential areas. Second, air target compounds were hourly measured for 24 hours in each of two commercial areas, two residential areas, and an industrial complex area. Based on the first experiment the breathing zone air was more polluted in the commercial area as compared to the residential area, while the second experiment showed that the breathing zone air was polluted rather in the residential area as compared to the commercial area. The second experiment also indicated that there was some variation of breathing zone air concentration with time and measuring sites. Diurnal variation of breathing zone air concentrations was consistent with previous studies which measured at building height. The highest breathing zone air concentration was shown in Seongseo industrial complex area. An unusual finding of this study was that SO_2 concentration in the breathing zone air of Bisandong, a typical residential area of Taegu, was higher than that of other residential areas, even higher than that of Seongseo industrial complex area.

미규모 환경에서의 휘발성 유기화합물 노출

조완근,강귀화,우형택,박종길 한국환경과학회 1995 한국환경과학회지 Vol.4 No.5

Volatile organic compounds(VOCs) are of concern for their potential chronic toxicity, their suspected role in the formation of smog, and their suspected role in destruction of stratospheric ozone. Present study evaluated the exposures to selected VOCs in three microenvironments: 2 chlorinated and 5 aromatic VOCs in the indoor and outdoor air, and 5 aromatic VOCs in the breathing zone air of gas-service station attendants. With permissible Quality Assurance and Quality Control performances VOC concentrations were measured 1) to be higher in indoor air than in outdoor air, 2) to be higher in two Taegu residential areas than in a residential area of Hayang, and 3) to be higher in the nighttime than in the daytime. Among five aromatics, Benzene and Toluene were two most highly measured VOCs in breathing zone air of service station attendants. Based on the sum of VOC concentrations, the VOC exposure during refueling was estimated to be about 10% of indoor and outdoor exposures. For Benzene only, the exposure during refueling was estimated to cause about 52% of indoor and outdoor exposure. The time used to calculate the exposures was 2 minutes for refueling and 24 hours for indoor and outdoor exposures.

Adsorption backup following light-emitting diode-irradiated photocatalytic unit for control of low-degraded toxic gaseous compounds

조완근 한국화학공학회 2013 Korean Journal of Chemical Engineering Vol.30 No.3

Although several visible light-emitting diode (LED)-irradiated photocatalysts exhibited low photocatalytic decomposition efficiencies for toxic gaseous pollutants, activated carbon fiber (ACF) has rarely been used as a backup adsorption device for photocatalytic systems. Accordingly, this study accessed the applicability of a supplemental ACF following a visible LED-irradiated S-TiO2 unit for the control of low-degraded benzene and toluene. The characteristics of the S-TiO2 and ACF were determined using an XRD, a UV-Vis-NIR, and an FTIR spectrophotometer. For an LED/S-TiO2 system, low degradation efficiencies regarding benzene and toluene (close to zero-7.2% and 7.1-64.4%, respectively) were found. In contrast, the mean degradation efficiencies of both compounds obtained from the photocatalytic-ACF hybrid system were all close to 100%. In addition, no peaks were observed in the gas chromatogram of air samples taken at the outlet of the hybrid system, whereas several trace peaks were observed in the standalone photocatalytic reactor results. The breakthrough of the ACF occurred at approximately 14 and 28 hours for benzene and toluene, respectively, and saturation occurred at approximately 28 and 42 hours, respectively. Consequently, this study newly found that the supplemental activated carbon fiber following a visible LED-irradiated S-TiO2 unit could be applied effectively for the control of low-degraded toxic benzene and toluene.

이동용 호기시료 채취시스템 개발

조완근 경북대학교 공과대학 1998 산·학·연 공동기술개발 결과보고서 Vol.1998 No.-

낙동강 하구역의 수중 및 저질 중금속 분포

조완근 인제대학교 1992 仁濟論叢 Vol.8 No.1

낙동강 하구역의 수중 중금속 조사가 1991년 여름, 가을, 겨울 그리고 1992년 봄의 4회에 걸쳐 예상청정수역과 예상오염수역 9개 지점에서 실시되었다. 카드뮴,구리 및 납은 4회에 걸쳐 모든 채취지역에서 각각 본 분석법의 검출한계인 0.01ppm, 0.02ppm 그리고 0.10ppm 이하로서 검출이 되지 않았다. 총 크롬은 농도범위와 4회 평균농도 각각 ND(not detected)-0.07ppm과 0.0166ppm으로 나타났고, 예상 오염지역인 장림에서 최대인 0.043ppm으로, 예상천정지역인 물금에서 최소인 0.005ppm으로 나타났다. 철의 농도범위와 4회 평균농도는 각각 ND-0.1ppm과 0.0364ppm이고, 채취지점별 농도 차이는 크지 않게 나타났다. 낙동강 하구역의 저질 중금속 조사가 수중조사와 동일한 일정으로 5개 지점에서 실시되었다. 카드뮴은 4회에 걸쳐 물금, 하구언 및 구포 지역에서는 검출이 되지 않았고, 장림과 녹산에서의 카드뮴 4회 평균 농도는 각각 0.38ppm과 0.10ppm으로 나타났다. 저질 총 크롬 평균농도는 예상오염지역인 장림에서 18.4ppm으로서 가장 높았고, 예상 청정지역인 물금에서 1.74ppm으로서 가장 낮게 나타났다. 지구토양의 주구성성분중의 하나인 철은, 물금으로 3295ppm으로서 최소이고, 장림에서 13,229ppm으로서 최대로 나타났다. 납의 평균농도가 장림에서 13.9ppm으로서 가장 높았고, 물금에서 0.16ppm으로서 가장 낮게 나타났다. The survey of heavy metals in Nak-Dong river water was conducted at nine sites in each season, from summer(1991) to spring(1992). Cadmium, copper, and lead were not detected at all sites for the study time. The minimum detection limits(MDLs) of Cadmium, copper, and lead were 0.01ppm, 0.02ppm, and 0.10ppm, respectively. The concentration range and the season-average concentration of total chromium were net-detected (ND) through 0.07ppm and 0.0166ppm, respectively. The range of iron concentration was ND through 0.1ppm, and the season average concentration of iron was 0.0364ppm. The iron concentration difference at each site was not significant. The concentration of heavy metals in Nak-Dong river sediment was measured at the same sites and time as those of water study. Cadmium was not detected at Mul-gum, Hagu-un, and Ku-po in each season. However, the season-average concentration of cadmium at Gang-lim and Nok-san were 0.38ppm and 0.10ppm, respectively. The season-average concentration of total chromium at Mul-gum which is an expected clean site was 1.43ppm, while at Gang-lim which is an expected polluted site was 18.4ppm. The season-averse concentration of iron which is one of the major components of earth soil was 3295ppm at Mul-gum and was 13229ppm at Gang-lim. Lead concentration was 13.9ppm at Gang-lim and was 0.16ppm at Mul-gum.

자동차 운행과 관련한 PM10 및 일산화탄소 노출 평가 ( Exposure to PM10 and Carbon Monoxide ( CO ) Associated with Automobile Travels )

조완근,이진우 한국대기환경학회 2001 한국대기환경학회지 Vol.17 No.4