• Title/Summary/Keyword: Illite

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Sorption of Se(-II) on illite, MX-80 bentonite, shale, and limestone in Na-Ca-Cl solutions

  • Walker, Andrew;Racette, Joshua;Saito, Takumi;Yang, Tammy (Tianxiao);Nagasaki, Shinya
    • Nuclear Engineering and Technology
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    • v.54 no.5
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    • pp.1616-1622
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    • 2022
  • Selenium has been identified as an element of interest for the safety assessment of a deep geological repository (DGR) for used nuclear fuel. In Canada, groundwaters at DGR depths in sedimentary rocks have been observed to have a high ionic strength. This paper examines the sorption behavior of Se(-II) onto illite, MX-80 bentonite, Queenston shale, and argillaceous limestone in Na-Ca-Cl solutions of varying ionic strength (0.1-6 mol/kgw (m)) and across a pH range of 4-9. Little ionic strength dependence for Se(-II) sorption onto all solids was observed except that sorption at high ionic strength (6 m) was generally slightly lower than sorption at low ionic strength (0.1 m). Illite and MX-80 exhibited the expected results for anion sorption, while shale and limestone exhibited more constant sorption across the pH range tested. A non-electrostatic surface complexation model successfully predicted sorption of Se(-II) onto illite and MX-80 using the formation of an inner-sphere surface complex and an outer-sphere surface complex. Optimized values for the formation reactions of these surface species were proposed.

Effect of Illite Non-Woven Fabric Tunnels on the Growth and Yield of Pepper (Capsicum annuum L.) in Paddy Culture (고추 논 재배시 일라이트부직포 터널을 이용한 막덮기 재배효과)

  • Jang, Kil-Su;Kim, Chan Yong;Kwon, Oh Hun;Jeon, Su Gyeong;Hwang, Ji Eun;Kwon, Tae Young
    • Horticultural Science & Technology
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    • v.33 no.3
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    • pp.326-330
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    • 2015
  • This study was conducted to examine the effect of tunnel covering materials on the growth and yield of red pepper in paddy fields. Materials for tunnel coverings included illite non-woven fabric and P.E film. Air and soil temperature were higher in the illite non-woven tunnel and P.E film tunnel by $7-8^{\circ}C$ and $2-3^{\circ}C$, respectively, compared to no covering. Relative humidity in those treatments was also higher than with no covering. The growth and yield were higher with illite non-woven tunnels and P.E film tunnels than with no covering. In particular, the yield was 30% and 26% higher in illite non-woven tunnels and P.E film tunnels, respectively, than with no covering.

Mechanical and Thermal Properties of Epoxy Composites Reinforced Fluorinated Illite and Carbon Nanotube (불소화 일라이트 및 탄소나노튜브 강화 에폭시 복합재의 기계적 및 열적 특성)

  • Lee, Kyeong Min;Lee, Si-Eun;Kim, Min Il;Kim, Hyeong Gi;Lee, Young-Seak
    • Applied Chemistry for Engineering
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    • v.27 no.3
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    • pp.285-290
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    • 2016
  • To improve properties of epoxy composites, surfaces of the illite and carbon nanotube (CNT) were treated by fluorine gas. The fluorinated illite and CNT were then characterized by X-ray photoelectron microscopy (XPS) and the mechanical and thermal properties of their composites were evaluated. The tensile and impact strengths and thermal stability of the composites increased upto about 59%, 18% and 124%, respectively compared to those of the neat epoxy. Improvements of mechanical and thermal properties in the composites were attributed that the fluorination of illite and carbon nanotube helps to enhance the dispersion in epoxy resin and interfacial interaction between them.

Environment Corresponding Package by Quantitative Mixing System with Functional Inorganic Material and Polyolefin Resin (기능성 무기물과 폴리올레핀계 수지의 정량적 혼합시스템에 의한 환경대응형 포장소재 개발)

  • Kim, Hi-Sam;Lim, Hyun-Ju;Park, Young-Mi
    • Textile Coloration and Finishing
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    • v.21 no.1
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    • pp.1-9
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    • 2009
  • A lot of research has been made over the recent decade to develop testing packages with antimicrobial properties to improve food safety. In this study, a new method, experimental device and technology for environmental corresponding packages of polypropylene (PP) film has been developed to provide effective temperature buffering during the transport/long-term storage of grains or foodstuffs from the supplier to the market. This quantitatively optimized mixing system enabled to produce PP films with the 700$\sim$1,400d (width;1.5$\sim$3mm, thickness;0.01$\sim$0.5mm). In the whole mixing systems, the finely-granulated inorganic illite and PP virgin chip for master batch (M/B) chip was calculated by digital measurement methods, and then the M/B chip for PP film was adapted through a air jet and PP grinding method. The prepared PP film was characterized with tensile strength and elongation, far infrared radiation (FIR) emissivity, antimicrobial activity and deodorization properties. The results revealed that the two differently grain-sized illite could be show homogeneously dispersed on PP chip surface, and as the increasing of illite content, the FIR emissivity and the anion emission rate of film was increasingly improved. In both of 325 and 1,500 mesh-sized illite contained PP chip, of course the antimicrobial activity was good. But the ultimate deodorization rate for ammonia gas of PP film were found to be approximately the same.

A Study on Experiment for Improvement of Water Quality in Concrete Block Using Illite and TiO2 Powder (일라이트와 이산화티탄을 활용한 콘크리트 블록의 수질환경개선을 위한 실험연구)

  • Her, Jae-Won;Kang, Kyung-Soo;Kim, Young-Su
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.22 no.1
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    • pp.115-122
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    • 2018
  • In order to conduct the "A Study on Experiment for Improvement of Water Quality in Concrete Block Using illite and $TiO_2$ Powder", as a result of the preliminary mortar experiment, water quality purification characteristic test, pollution-resistance test, fish poison test, and the related KS-equivalent tests after manufacturing the actual concrete block, the following conclusion were deduced. As a result of the concrete block functional evaluation equivalent to KS, all the conditions showed higher compressive strength. Even though increase of absorption rate, according to illite replacement in vesicular structure, was expected as a problem, it was replaced after mixing with Titanium dioxide, and then Titanium dioxide was settled in large pores of illite so there was no problem in absorption rate.

Effects of Using Illite Warm Water Mats on Lactate, CRP and ACR Induced High Intensity Exercise in Adults (일라이트 온수매트 사용이 고강도 운동으로 유발된 성인의 젖산, CRP, ACR에 미치는 영향)

  • Choi, Youngjun;Kim, Hyunjun
    • Journal of The Korean Society of Integrative Medicine
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    • v.8 no.4
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    • pp.133-142
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    • 2020
  • Purpose : The purpose of this study was to investigate the effective recovery method of exercise-induced fatigue and muscle pain by comparing the effect of the use of illite hot mat product and general hot mat product on the recovery of muscle pain induced by high intensity exercise. Methods : To measure and analyze the changes in lactic acid, CRP, and ACR according to the high-intensity circuit training program, this study was conducted for the healthy adult men and women, who exercise st the K-region sports center. A total of 45 subjects were studied in 15 groups of 15 patients who received an illite hot-water mat recovery group (A group), 15 general hot-water mat recovery group (B group), and 15 control group (C group). The circuit training exercise program was conducted as a one-time exercise, and each exercise time consisted of 30 minutes of warm-up exercise, 5 minutes of main exercise, 20 minutes of clean-up exercise, and 5 minutes of strength exercise. The intensity setting was high intensity of subjective exercise intensity It carried out by setting to (14-16RPE). Results : Changes in Lactic Acid Concentration There was a significant difference in the lactic acid concentrations between the groups after the high intensity circuit training program (p <.05). The illite rest group (A) decreased 7.71 mmol / L and the control group decreased 4.03 mmol / L. Significantly decreased (p <.05). Changes in ACR Concentration. There was a significant difference in the ACR concentrations Significant differences were found in CRP and ACR during the recovery period after exercise. (p <.05), the elite rest group (A) decreased 2.47 mg / mmol, and the control group increased 1.63 mg / mmol. There was a significant difference (p <.05). Conclusion: The static rest on a heated mat after high-intensity exercise has an effect on changes in blood lactate and ACR levels.

Effect of Different Levels of Applications of Illite on the Growth of Red Pepper in Soil (토양에 점토광물 일라이트 처리시 고추의 생장에 미치는 영향)

  • Lee, Seok-Eon;Kim, Deok-Hyun;Hong, Hyeon-Ki;Kwon, Sang-Moon;Lee, Moon-Soon;Woo, Sun-Hee;Chung, Keun-Yook
    • Korean Journal of Soil Science and Fertilizer
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    • v.45 no.3
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    • pp.339-343
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    • 2012
  • This study was performed to examine the effect of the clay mineral illite on the improvement of soil and plant growth. Red pepper (Capsicum annuum L.) was used as a test vegetable crop. The experiment was performed during six weeks in the plantation of the Chungbuk National University. Its seedlings were cultivated in the soil normally used for horticultural purpose. Among the seedlings germinated the healthy and regular size of seed were selected and cultivated in the plantation. They were treated with two forms of illite, particulate (PA) and powder (PW), at the following application rates: standard application[P1 (PA1, PW1), soil: illite = 1:20 (w/w)] and two times [P2 (PA2, PW2), 1:10 (w/w)] of standard application. Untreatment (P0) was used as a control soil. At six weeks of cultivation, their growth lengths were correspondingly increased as the application rate was increased ranging from P0, P1, and P2. Their growth length was a little greater with the application of powder illite (PW) than with the particulate illite (PA). Based on the plant analysis of root, leaf, and stem of red pepper, the uptake amounts of K, Ca, and Mg, were correspondingly increased, as the application rate was increased ranging from P0, P1, and P2 respectively. At the same application rate, their amounts taken up in the respective parts were higher with the application of PW illite than on the PA one. Especially the amounts of Ca and Mg were higher in the stem and leaf than root. Consequently, it appears that the illite treatment, especially, PW form of illite, enhance the growth of red pepper in the plantation during the six weeks of experiment.

Effect of Far-Infrared Finishing on Brassiere Pad

  • Shin Jung-Sook
    • The International Journal of Costume Culture
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    • v.8 no.2
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    • pp.124-131
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    • 2005
  • This study focused on the change of skin temperature by the emissivity and emission power of far-infrared for conformant far infrared effect to naked eyes. The study method is to manufacture the bra pad by each concentration on far-infrared materials of illite powder $(K,H_3O)AI_2(Si,Al)_4O_{10}(H_2O,OH)_2)$, liquid alumina ($Al_2O_3$), the extracted liquid from 29 kind of medical plants, then, measured change of skin temperature. Result are as follows. Far-infrared were emitted each $90.2\%,\;90.1\%,\;89.7\%$ from the illite powder, liquid alumina, extracted liquid from medical plants. When the testee weared the bra pad, the temperature of coated bra pad was $0.5^{\circ}C$ higher than the non finished bra pad. Washing fastness on far-infrared finishing was better dope addition method than coating method.

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Mineralogical Properties of the Sedimental Clay in Ulsan (울산퇴적점토의 광물조성 특성)

  • 민덕기;황광모;강문기;박종규
    • Proceedings of the Korean Geotechical Society Conference
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    • 2000.03b
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    • pp.567-574
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    • 2000
  • The purpose of this study is to examine mineralogical properties of the soft clay that is distributed widely in Samsan area, Ulsan. XRD analysis were examined to find the quantities of the clay minerals. And XRF, SEM and EDX analysis were also examined to investigate the chemical compositions and the structures of the clay. The properties of the samples from 2 sites in Samsan area were that the minerals of the clay were illite, kaolinite, chlorite, smectite and etc.. The plenty of illite has 38 to 53% of content in whole study area. And kaolinite had 18 to 30%, chlorite had 15 to 25%, and smectite had 4 to 12% of content, respectively. The results of SEM observation showed that appearances of Ulsan clay were sheet, plannar or needle form. Ulsan clay included the salt crystal of cubic and the foraminifera, which were related with the content of organ.

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Mechanical Properties of Magnesium Oxide Matrix Accroding to Addition Ratio of Absorbent (흡착재의 첨가율에 따른 산화마그네슘 경화체의 역학적 특성)

  • Gwon, Oh-Han;Lim, Hyun-Ung;Lee, Sang-So
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2016.05a
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    • pp.26-27
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    • 2016
  • This study is an experiment to know mechanical properties that matrix of the magnesium oxide-based can interior Radon gas absorption and decrease by the addition of Bentonite, Vermiculite, illite having characteristic of the cation-exchange and porous. As a study to examine the possibility was fixed the addition amount of each adsorbent that was added to the 0, 10, 20% of magnesium oxide and magnesium chloride with 25%. Illite, bentonite WB is 45 (wt,%), vermiculite W/B was carried out an experiment to 50 (wt,%).

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