Pub Date : 2021-01-01DOI: 10.2991/ahcps.k.211004.013
Dolgorjav Rentsendavaa, Saran Galdansambuu, Song In‐Hyuck
Mongolia has few freshwater resources. It is therefore important to conserve water resources. An efficient possibility is to purify water and reuse it. Therefore, the scientists from the Material Science Center of the Mongolian University of Science and Technology collaborated with the researcher from the Korea Institute of Material Science and carried out a project between 2017-2020. In this study, Mongolian zeolites and prepared kaolin were used and flat tubular porous support was extruded by a double screw vacuum extruder at KIMS. The supports were burned at 800 and 1000°C and the properties such as pore distribution were determined by mercury porosimetry. The zeolite-kaolin support had a bulk density of 1.46 g/cm, a porosity of 41.52% and, an average pore size of 218 nm. With its water permeability of 115 L/m·h at 0.01 MPa and 970 L/m·h at 0.08 MPa, the support achieved good results. The wastewater treatment tests show that these membranes also have good compressive strengths. We have cleaned the sewage from a leather factory, which was very highly contaminated and has high viscosity.
{"title":"Fabrication of Flat Tubular Clay-Based Porous Support Filters","authors":"Dolgorjav Rentsendavaa, Saran Galdansambuu, Song In‐Hyuck","doi":"10.2991/ahcps.k.211004.013","DOIUrl":"https://doi.org/10.2991/ahcps.k.211004.013","url":null,"abstract":"Mongolia has few freshwater resources. It is therefore important to conserve water resources. An efficient possibility is to purify water and reuse it. Therefore, the scientists from the Material Science Center of the Mongolian University of Science and Technology collaborated with the researcher from the Korea Institute of Material Science and carried out a project between 2017-2020. In this study, Mongolian zeolites and prepared kaolin were used and flat tubular porous support was extruded by a double screw vacuum extruder at KIMS. The supports were burned at 800 and 1000°C and the properties such as pore distribution were determined by mercury porosimetry. The zeolite-kaolin support had a bulk density of 1.46 g/cm, a porosity of 41.52% and, an average pore size of 218 nm. With its water permeability of 115 L/m·h at 0.01 MPa and 970 L/m·h at 0.08 MPa, the support achieved good results. The wastewater treatment tests show that these membranes also have good compressive strengths. We have cleaned the sewage from a leather factory, which was very highly contaminated and has high viscosity.","PeriodicalId":20562,"journal":{"name":"Proceedings of the 5th International Conference on Chemical Investigation and Utilization of Natural Resource (ICCIUNR-2021)","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75887472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
1 Department of Chemistry, School of Arts and Sciences, National University of Mongolia, Sukhbaatar district, Ulaanbaatar 14201 Mongolia 2 Department of Chemical and Biological Engineering, School of Engineering and Applied Sciences, National University of Mongolia, Sukhbaatar district, Ulaanbaatar 14201 Mongolia 3 Innovation and Business Development Center, Division of Science and Research, Mongolian University of Life Sciences, Khan-Uul district, Ulaanbaatar 17024 Mongolia 4 Department of Agricultural Engineering, School of Engineering and Technology, Mongolian University of Life Sciences, Khan-Uul district, Ulaanbaatar 17024 Mongolia *Corresponding author. Email: buyan@num.edu.mn
{"title":"Corrigendum to “Characterization of Biochars Produced from Various Biowastes”","authors":"Bayarjargal Bayartsengel, Nomuunzaya Erdene-Ochir, Sainzaya Battulga, Saurjan Tyeliubek, Erdenedalai Jantsanpurev, B. Chuluun","doi":"10.2991/ahcps.k.211004.024","DOIUrl":"https://doi.org/10.2991/ahcps.k.211004.024","url":null,"abstract":"1 Department of Chemistry, School of Arts and Sciences, National University of Mongolia, Sukhbaatar district, Ulaanbaatar 14201 Mongolia 2 Department of Chemical and Biological Engineering, School of Engineering and Applied Sciences, National University of Mongolia, Sukhbaatar district, Ulaanbaatar 14201 Mongolia 3 Innovation and Business Development Center, Division of Science and Research, Mongolian University of Life Sciences, Khan-Uul district, Ulaanbaatar 17024 Mongolia 4 Department of Agricultural Engineering, School of Engineering and Technology, Mongolian University of Life Sciences, Khan-Uul district, Ulaanbaatar 17024 Mongolia *Corresponding author. Email: buyan@num.edu.mn","PeriodicalId":20562,"journal":{"name":"Proceedings of the 5th International Conference on Chemical Investigation and Utilization of Natural Resource (ICCIUNR-2021)","volume":"103 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79468970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The angiotensin-converting enzyme (ACE) inhibitory activity and antioxidant property of collagen and elastin hydrolysates, and their peptide fractions (< 5 kDa, 5-10 kDa, 10-100 kDa) were compared. The bovine raw-hide and paddywhack (Ligamentum nuchae) were used for the preparation of collagen and elastin hydrolysates, respectively. Unfractionated collagen and elastin hydrolysates (4 mg/mL) could reduce ACE activity by 61% and 58%. As a result of fractionation, ACE inhibitory activity of collagen hydrolysate was increased up to 85%, while this effect was not observed on elastin hydrolysate. Elastin hydrolysate showed intense radical scavenging abilities through 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-Azinobis-(3-Ethylbenzthiazolin-6-Sulfonic Acid (ABTS) assay. The collagen hydrolysate obtained from the bovine rawhide has more perspective for the bioactive food additive having ACEI activity in comparison with the elastin hydrolysate.
{"title":"Antioxidant and Antihypertensive Activity of Collagen and Elastin Hydrolysate at Different Molecular Weights","authors":"B. Munkhuu, Lkhagvamaa Erdene, Zolzaya Bayarsukh, Enkh-Ariun Altantulga, Oyuntuya Baltsukh, Gan-Erdene Tudev, Ariun Narmandakh","doi":"10.2991/ahcps.k.211004.004","DOIUrl":"https://doi.org/10.2991/ahcps.k.211004.004","url":null,"abstract":"The angiotensin-converting enzyme (ACE) inhibitory activity and antioxidant property of collagen and elastin hydrolysates, and their peptide fractions (< 5 kDa, 5-10 kDa, 10-100 kDa) were compared. The bovine raw-hide and paddywhack (Ligamentum nuchae) were used for the preparation of collagen and elastin hydrolysates, respectively. Unfractionated collagen and elastin hydrolysates (4 mg/mL) could reduce ACE activity by 61% and 58%. As a result of fractionation, ACE inhibitory activity of collagen hydrolysate was increased up to 85%, while this effect was not observed on elastin hydrolysate. Elastin hydrolysate showed intense radical scavenging abilities through 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-Azinobis-(3-Ethylbenzthiazolin-6-Sulfonic Acid (ABTS) assay. The collagen hydrolysate obtained from the bovine rawhide has more perspective for the bioactive food additive having ACEI activity in comparison with the elastin hydrolysate.","PeriodicalId":20562,"journal":{"name":"Proceedings of the 5th International Conference on Chemical Investigation and Utilization of Natural Resource (ICCIUNR-2021)","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78746942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.2991/ahcps.k.211004.016
S. Zherebtsov, K. Shpakodraev, N. Malyshenko, K. Votolin, Z. Ismagilov
The paper presents data on the yield, chemical composition of bitumen extracted from the brown coal of the Tyulgan deposit. Bitumens were extracted from brown coal by the following methods: I) sequential extraction with ethanol, n-heptane, alcohol-benzene according to the Grefe method, II) low-temperature dissolution of the organic mass of coal (OMC) by alkylation and subsequent extraction of bitumoids; III) stimulation of alkylation by ultrasound and subsequent extraction of bitumoids. It is shown that the use of ultrasonic exposure during the O-alkylation process has a positive effect on the yield of bitumoids the yield increased to 52%. The obtained samples were studied using the methods of IR spectroscopy, C NMR (CPMAS), gas chromatography-mass spectrometry (GC-MS). A number of individual compounds were identified in the composition of bitumen and bitumoids during the study by the GCMS method: gamma-tocopherol, Stigmast-4-en-3-one, betaHydroxyallobetulan, 1-Hexadecanol, Oleyl alcohol, etc. Among the identified compounds, various biologically active substances are present.
{"title":"Stimulation of Low-Temperature Dissolution of Organic Matter of Brown Coal, Composition of Bitumoids","authors":"S. Zherebtsov, K. Shpakodraev, N. Malyshenko, K. Votolin, Z. Ismagilov","doi":"10.2991/ahcps.k.211004.016","DOIUrl":"https://doi.org/10.2991/ahcps.k.211004.016","url":null,"abstract":"The paper presents data on the yield, chemical composition of bitumen extracted from the brown coal of the Tyulgan deposit. Bitumens were extracted from brown coal by the following methods: I) sequential extraction with ethanol, n-heptane, alcohol-benzene according to the Grefe method, II) low-temperature dissolution of the organic mass of coal (OMC) by alkylation and subsequent extraction of bitumoids; III) stimulation of alkylation by ultrasound and subsequent extraction of bitumoids. It is shown that the use of ultrasonic exposure during the O-alkylation process has a positive effect on the yield of bitumoids the yield increased to 52%. The obtained samples were studied using the methods of IR spectroscopy, C NMR (CPMAS), gas chromatography-mass spectrometry (GC-MS). A number of individual compounds were identified in the composition of bitumen and bitumoids during the study by the GCMS method: gamma-tocopherol, Stigmast-4-en-3-one, betaHydroxyallobetulan, 1-Hexadecanol, Oleyl alcohol, etc. Among the identified compounds, various biologically active substances are present.","PeriodicalId":20562,"journal":{"name":"Proceedings of the 5th International Conference on Chemical Investigation and Utilization of Natural Resource (ICCIUNR-2021)","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81030383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Biochar is a product of thermal degradation of organic materials in the absence of air (pyrolysis). Slowpyrolyzed and biowaste-derived biochars show excellent adsorption properties. Studies on biochars produced from pine nut shells, sawdust, and cow dung have been carried out in Mongolia determining the technical characteristics and applying for improvement of soil quality. However, a thorough characterization of biochars is still in lack. In this study, we produced 10 biochars from animal bones and dungs, and firewoods and compared their characterization properties. Physico-chemical parameters of biochars such as moisture, ash, volatile matters, fixed carbons, pH, redox potential (pE), electrical conductivity (EC), total dissolved solids (TDS), cation exchange capacity (CEC), and base saturation were determined and SEM-EDX, FTIR, XRD, main elements, and trace metals analysis were obtained. Methylene blue and iodine absorption tests were carried out in terms of surface porosity. All biochars showed high electrical conductivity and base saturation indicating that they were rich in cations. The highest values of pH, EC, TDS, and CEC were found in biochar produced from sheep dung. Among bone chars, biochar produced from sheep spine bone showed the highest CEC. High Ca content in bone biochars resulted from the nature of the raw material. Biochars hardly contained trace metals. XRD analysis showed that the firewood biochar had amorphous, whereas the bone biochars and dungs had crystal structures. Biochars produced from animal and forestry biowastes have shown great values of adsorbent characteristics, thus the application of such biochars can simultaneously reduce waste and be an environmentally friendly valuable product.
{"title":"Characterization of Biochars Produced from Various Biowastes","authors":"Bayarjargal Bayartsengel, Nomuunzaya Erdene-Ochir, Sainzaya Battulga, Saurjan Tyeliubek, Erdenedalai Jantsanpurev, B. Chuluun","doi":"10.2991/ahcps.k.211004.012","DOIUrl":"https://doi.org/10.2991/ahcps.k.211004.012","url":null,"abstract":"Biochar is a product of thermal degradation of organic materials in the absence of air (pyrolysis). Slowpyrolyzed and biowaste-derived biochars show excellent adsorption properties. Studies on biochars produced from pine nut shells, sawdust, and cow dung have been carried out in Mongolia determining the technical characteristics and applying for improvement of soil quality. However, a thorough characterization of biochars is still in lack. In this study, we produced 10 biochars from animal bones and dungs, and firewoods and compared their characterization properties. Physico-chemical parameters of biochars such as moisture, ash, volatile matters, fixed carbons, pH, redox potential (pE), electrical conductivity (EC), total dissolved solids (TDS), cation exchange capacity (CEC), and base saturation were determined and SEM-EDX, FTIR, XRD, main elements, and trace metals analysis were obtained. Methylene blue and iodine absorption tests were carried out in terms of surface porosity. All biochars showed high electrical conductivity and base saturation indicating that they were rich in cations. The highest values of pH, EC, TDS, and CEC were found in biochar produced from sheep dung. Among bone chars, biochar produced from sheep spine bone showed the highest CEC. High Ca content in bone biochars resulted from the nature of the raw material. Biochars hardly contained trace metals. XRD analysis showed that the firewood biochar had amorphous, whereas the bone biochars and dungs had crystal structures. Biochars produced from animal and forestry biowastes have shown great values of adsorbent characteristics, thus the application of such biochars can simultaneously reduce waste and be an environmentally friendly valuable product.","PeriodicalId":20562,"journal":{"name":"Proceedings of the 5th International Conference on Chemical Investigation and Utilization of Natural Resource (ICCIUNR-2021)","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84907204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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