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JOURNAL OF THE KOREAN ENVIRONMENTAL SCIENCES SOCIETY

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수록정보
수록범위 : 1권1호(1992)~27권9호(2018) |수록논문 수 : 3,215
한국환경과학회지
27권9호(2018년 09월) 수록논문
최근 권호 논문
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KCI등재

1가축분뇨 및 음식물쓰레기의 혐기성 소화 병합처리 시 VS 제거효율과 메탄 발생량의 관한 연구

저자 : 최영익 ( Young-ik Choi ) , 지현조 ( Hyeon-jo Ji ) , 정진희 ( Jin-hee Jung ) , 정병길 ( Byung-gil Jung ) , 김정권 ( Jung-geon Kim )

발행기관 : 한국환경과학회 간행물 : 한국환경과학회지 27권 9호 발행 연도 : 2018 페이지 : pp. 737-742 (6 pages)

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Livestock manure treatments have become a more serious problem because massive environmental pollutions such as green and red tides caused by non-point pollution sources from livestock manures have emerged as a serious social issue. In addition, more food wastes are being produced due to population growth and increased income level. Since the London Convention has banned the ocean dumping of wastes, some other waste treatment methods for land disposal had to be developed and applied. At the same time, researches have been conducted to develop alternative energy sources from various types of wastes. As a result, anaerobic digestion as a waste treatment method has become an attractive solution. In this study has three objectives: first, to identify the physical properties of the mixture of livestock wastewater and food waste when combining food waste treatment with the conventional livestock manure treatment based on anaerobic mesophilic digestion; second, to find the ideal ratio of waste mixture that could maximize the collection efficiency of methane (CH4) from the anaerobic digestion process; and third, to promote CH4 production by comparing the biodegradability. As a result of comparing the reactors R1, R2, and R3, each containing a mixture of food waste and livestock manure at the ratio of 5:5, 7:3, and 3:7, respectively, R2 showed the optimum treatment efficiencies for the removal of Total Solids (TS) and Volatile Solids (VS), CH4 production, and biodegradability.

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2수용액 중 OrangeⅡ 흡착 제거를 위한 우모폐기물의 이용가능성

저자 : 박수연 ( Soo-yeun Park ) , 유지연 ( Ji-yeon Yoo ) , 손홍주 ( Hong-joo Son )

발행기관 : 한국환경과학회 간행물 : 한국환경과학회지 27권 9호 발행 연도 : 2018 페이지 : pp. 743-751 (9 pages)

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The objective of this study was to investigate the adsorption potential of chicken feathers for the removal of OrangeⅡ (AO7) from aqueous solutions. Batch experiments were performed as a function of different experimental parameters such as initial pH, reaction time, feather dose, initial OrangeⅡ concentration and temperature. The highest OrangeⅡ uptake was observed at pH 1.0. Most of the OrangeⅡ was adsorbed at 2 h and an adsorption equilibrium was reached at 6 h. As the amount of chicken feather was increased, the removal efficiency of Orange II increased up to 99%, but its uptake decreased. By increasing the initial concentration and temperature, OrangeⅡ uptake was increased. The experimental adsorption isotherm exhibited a better fit with the Langmuir isotherm than with the Freundlich isotherm, and maximum adsorption capacity from the Langmuir constant was determined to be 0.179244 mmol/g at 30℃. The adsorption energy obtained from the Dubinin-Radushkevich model was 7.9 kJ/mol at 20℃ and 30℃ which indicates the predominance of physical adsorption. Thermodynamic parameters such as △G0, △H0, and △S0 were -12.28 kJ/mol, 20.64 kJ/mol and 112.32 J/mol K at 30℃, respectively. This indicates that the process of OrangeⅡ adsorption by chicken feathers was spontaneous and endothermic. Our results suggest that as a low-cost biomaterials, chicken feather is an attractive candidate for OrangeⅡ removal from aqueous solutions.

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3생물소재인 땅콩껍질 바이오 차를 이용한 수용액의 Cd(II) 제거

저자 : 최희정 ( Hee-jeong Choi )

발행기관 : 한국환경과학회 간행물 : 한국환경과학회지 27권 9호 발행 연도 : 2018 페이지 : pp. 753-762 (10 pages)

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The present study set out to investigate the adsorption of Cd(II) ions in an aqueous solution by using Peanut Husk Biochar (PHB). An FT-IR analysis revealed that the PHB contained carboxylic and carbonyl groups, O-H carboxylic acids, and bonded-OH groups, such that it could easily adsorb heavy metals. The adsorption of Cd(II) using PHB proved to be a better fit to the Langmuir isotherm than to the Freundlich isotherm. The maximum Langmuir adsorption capacity was 33.89 mg/g for Cd(II). The negative value of ΔGo confirm that the process whereby Cd(II) is adsorbed onto PHB is feasible and spontaneous in nature. In addition, the value of ΔGo increase with the temperature, suggesting that a lower temperature is more favorable to the adsorption process. The negative value of ΔHo indicates that the adsorption phenomenon is exothermic while the negative value of ΔSo suggests that the process is enthalpy-driven. As an alternative to commercial activated carbon, PHB could be used as a low-cost and environmentally friendly adsorbent for removing Cd(II) from aqueous solutions.

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4패각 분말기반 과산화칼슘 제조와 산소 유리 특성

저자 : 유길선 ( Gilsun Yoo ) , 안지은 ( Jieun An ) , 조대철 ( Daechul Cho ) , 권성현 ( Sung Hyun Kwon )

발행기관 : 한국환경과학회 간행물 : 한국환경과학회지 27권 9호 발행 연도 : 2018 페이지 : pp. 763-770 (8 pages)

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Bioremediation in situ is heavily dependent on the oxygenic environment which would privide the dwelling microorganism with sufficient oxygen. The situation could be easily resolved with supply of an Oxygen Releasing Compound (ORC). In this paper we prepared that sort of material out of oyster shell powder (mostly calcium carbonate) that prevails every shore areas of the country. We used two different oxidizing methods in the first step of the whole manufacturing process-conventional heating in a furnace and an ultrasound generator to obtain calcium oxide. Then that calcium oxide was further oxidized into calcium peroxide which may release oxygen under a moisturized condition. The oxygen releasing experiments were run to test the performance of our products, and to determine the gas kinetics during the experiments. Interestingly, calcium peroxide derived from ultrasound treatment was much more energy-effective as ORC than that from furnace heating although the heat derived process was better than that of ultrasound in terms of oxygen content and its releasing rate. We also found that most of the data collected from the gas releasing experiments fairly supported an ordinary 1st order kinetics to oxygen concentration, which shaped a sharp discharge of oxygen at the very early moment of each test.

KCI등재

5Pseudomonas koreensis에 의한 잡초제어활성물질인 HCN 생성과 이 균주의 식물성장 촉진 및 흰개미 살충 활성

저자 : 유지연 ( Ji-yeon Yoo ) , 장은진 ( Eun-jin Jang ) , 박수연 ( Soo-yeun Park ) , 손홍주 ( Hong-joo Son )

발행기관 : 한국환경과학회 간행물 : 한국환경과학회지 27권 9호 발행 연도 : 2018 페이지 : pp. 771-780 (10 pages)

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To develope a microbial weed control agent, HCN-producing bacteria were isolated, and their characteristics were investigated. A selected strain of WA15 was identified as Pseudomonas koreensis by morphological, cultural, biochemical and 16S rRNA gene analyses. The conditions for HCN production was investigated by a One-Variable-at-a-Time (OVT) method. The optimal HCN production conditions were tryptone 1%, glycine 0.06%, NaCl 1%, and an initial pH and temperature of 5.0 and 30℃, respectively. The major component for HCN production was glycine. Under optimal conditions, HCN production was about 3 times higher than that of the basal medium. The WA15 strain had physiological activities, such as indoleacetic acid that was associated with the elongation of plant roots and siderophore and ammonification inhibiting fungal growth, and produced hydrolytic enzymes, such as cellulase, pectinase and lipase. The strain was able to inhibit the growth of phytopathogenic fungi, such as Rhizoctonia solani, Botrytis cinerea and Fusarium oxysporum, by the synergistic action of volatile HCN and diffusible antimicrobial compounds. A microscopic observation of R. solani that was teated with the WA15 strain showed morphological abnormalities of fungal mycelia, which could explain the role of the antimicrobial metabolites that were produced by the WA15 strain. The volatile HCN produced by the WA15 strain was also found to have insecticidal activity against termites. Our results indicate that Pseudomonas koreensis WA15 can be applied as a microbial agent for weed control and also as a termite repellent. Furthermore, it could be applied as a microbial termiticidal agent to replace synthetic insecticides.

KCI등재

6가지제(加脂劑) 생산공정에서 배출되는 악취원인물질 연구

저자 : 서용수 ( Yong-soo Seo ) , 서정민 ( Jeong-min Suh )

발행기관 : 한국환경과학회 간행물 : 한국환경과학회지 27권 9호 발행 연도 : 2018 페이지 : pp. 781-788 (8 pages)

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The volatile odor compounds emitted form a stuffing agent production process were quantified by ATD and GC-MS, and then odor causing compounds were identified by the method of EOI using each TLV. As the results, 72 odor compounds were detected and total concentration was turned up 87.6 ppmv level. In these compounds, aldehyde group is higher 45.49 ppmv than others group, the next is turn up the order of aliphatics, alcohols, esters, ketones. The EOA of aldehyde group show up 101,720 and 97.2%, respectively, the odor causing compounds were identified each of odor 2-Octenal 28.31%, Hexanal 24.06%, Valeraldehyde 16.07%, Butyraldehyde 9.69%, Heptanal 4.97%, Propionaldehyde 4.64%, Acetaldehyde 3.31%. The TLVs of 7 major odor compounds are lower value level of 0.001∼0.0001 ppmv, odor causing even in trace level. We need to be concerned with reduction of aldehyde compounds in the odor problem by a stuffing agent production process or ironing process of the textile containing a stuffing agent.

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7가드닝 일지 분석을 통한 반려식물이 정서면에 미치는 효과

저자 : 김희석 ( Hee-seog Kim ) , 조태동 ( Tae-dong Cho )

발행기관 : 한국환경과학회 간행물 : 한국환경과학회지 27권 9호 발행 연도 : 2018 페이지 : pp. 789-796 (8 pages)

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This study aims to measure the emotional effects of pet plants, which have become popular in recent years. A questionnaire regarding perceptions of these indoor plants was administered to 78 university students. Thirty of these students took care of two species of pet plants for 90 days, and the emotional effects of this exercise were determined based on the type of words used in their daily records. The questionnaire results showed that the general recognition of emotional effects was low, though awareness of the term "pet plants" was high. However, after gardening for 90 days, participants began to consider their pet plants friends or family members, noting feelings of affection and sympathy in their daily writeups. These participants also experienced positive changes in their emotional well-being, including feelings of joy, hope, relaxation, confidence, and accomplishment. This study argues that pet plants can have positive effects on emotional stability and suggests that their adoption would be beneficial to humanity at large.

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8어류 수정란(egg) 밀도 측정 장치 개발 및 적용

저자 : 박종원 ( Jong Won Park ) , 정해근 ( Hae Kun Jung ) , 박주면 ( Joo Myun Park ) , 박흠기 ( Heum-gi Park ) , 이충일 ( Chung Il Lee )

발행기관 : 한국환경과학회 간행물 : 한국환경과학회지 27권 9호 발행 연도 : 2018 페이지 : pp. 797-802 (6 pages)

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Information about the density of fish eggs is important to understand the vertical distribution of eggs and survival in early stage, in particular change in egg density is one of major issue in fisheries. This paper describes a practical application of an experimental system for measurement of the fish egg density under laboratory conditions. The device can control the temperature range in each water column, and make different densities at each layer. The density of olive flounder (Paralichthys olivaceus) eggs have ranged from 1,018.49 to 1,020.93 kg/㎥ and were aggregated around the density of 1,020 kg/㎥. The results show that the device is applicable for measuring the fish egg density under laboratory conditions.

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9오리 사료첨가제로 일라이트를 적용 시 오리생산성과 경제성 분석에 관한 연구 - 현장 연구를 중심으로 -

저자 : 최인학 ( In Hag Choi )

발행기관 : 한국환경과학회 간행물 : 한국환경과학회지 27권 9호 발행 연도 : 2018 페이지 : pp. 803-807 (5 pages)

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This study evaluated the duck growth performance and the economic benefits on using illite as a feed additive for ducks. Illite powder at three levels (0%, 1%, and 1.5%) was added to commercial duck diets, and fed to 180 one-day-old ducks (Pekin, 3 replicates, 20 ducks per pen) using a randomized block design for 39 days. During the experimental period, there were no significant growth performance differences between treatments (p>0.05), except with the feed conversion ratio (p< 0.05), for all periods (8-39 days). In addition, the dietary supplementation of 1% and 1.5% illite did not significantly improve (p >0.05) Feed Intake Cost (FIC), Weight Gain Value (WGV), Meat Production Cost (MPC), Economic Efficiency (EE), Profitability (P), or cost benefit ratio for 8 to 21 d, 22 to 39 d, and 8 to 39 d. However, the differences in meat production cost and profitability between treatments were statistically significant (p<0.05) for all periods (8-39 d). In conclusion, adding 1% and 1.5% illite to duck diets is not beneficial for improving either the duck growth performance or the economic indicators.

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1연안해역에서 석유오염물질의 세균학적 분해에 관한 연구

(2006)홍길동 외 1명심리학41회 피인용

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(2006)홍길동심리학41회 피인용

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(2006)홍길동41회 피인용

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