Olive oil mill wastewater (OMW) is a by-product of the olive oil industry. It is very polluting and causes serious environmental problems, but is very loaded with polyphenols, which have antioxidant and anti-inflammatory power. This study aimed to evaluate in vitro the anti-inflammatory potential of the phenolic extract of OMW from two varieties, Chemlal and Zlitni, extracted from a modern olive mill located in Khenchela, eastern Algeria. The maceration method did the extraction of the polyphenols. The dosage of total polyphenols and flavonoids content was determined by Folin-Ciocalteu and aluminum trichloride methods successively. Two tests made the anti-inflammatory activity, inhibition of protein denaturation (IPD) and membrane-stabilizing potential (MSP), comparing with sodium diclofenac. The results obtained showed that the phenolic extract of OMW of Chemlal was found to exhibit the highest inhibitory effect anti-inflammatory activity (IPD: IC50 = 91.27 ± 2.73 µg/mL, and MSP: IC50=98.41 ± 1.22 µg/mL) more than the phenolic extract of Zlitni and the standard used (sodium iclofenac). The in vitro assays carried out show that the phenolic extract of OMW has an important source of natural anti-inflammatory agents, which can be used in the pharmaceutical industry and on the other hand reducing its dangerous impact on the environment.
{"title":"Anti-Inflammatory Activity Of Polyphenols From Olive Oil\u0000Mill Wastewaters","authors":"Z. Gueboudji","doi":"10.48103/jjeci542022","DOIUrl":"https://doi.org/10.48103/jjeci542022","url":null,"abstract":"Olive oil mill wastewater (OMW) is a by-product of the olive oil industry. It is very polluting and causes serious environmental problems, but is very loaded with polyphenols, which have antioxidant and anti-inflammatory power. This study aimed to evaluate in vitro the anti-inflammatory potential of the phenolic extract of OMW from two varieties, Chemlal and Zlitni, extracted from a modern olive mill located in Khenchela, eastern Algeria. The maceration method did the extraction of the polyphenols. The dosage of total polyphenols and flavonoids content was determined by Folin-Ciocalteu\u0000and aluminum trichloride methods successively. Two tests made the anti-inflammatory activity, inhibition of protein denaturation (IPD) and membrane-stabilizing potential (MSP), comparing with sodium diclofenac. The results obtained showed that the phenolic extract of OMW of Chemlal was found to exhibit the highest inhibitory effect anti-inflammatory activity (IPD: IC50 = 91.27 ± 2.73 µg/mL, and MSP: IC50=98.41 ± 1.22 µg/mL) more than the phenolic extract of Zlitni and the standard used (sodium iclofenac). The in vitro assays carried out show that the phenolic extract of OMW has an\u0000important source of natural anti-inflammatory agents, which can be used in the pharmaceutical industry and on the other hand reducing its dangerous impact on the environment.","PeriodicalId":14808,"journal":{"name":"JORDANIAN JOURNAL OF ENGINEERING AND CHEMICAL INDUSTRIES (JJECI)","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81121238","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}
This study presented theoretical and simulation predictions to find the optimum glass cover inclination angle that can allow the water droplet underneath the surface to slide along it without fall-off. As a case study, the solar still main component that plays a big role on it is performance is the transparent glass cover that permits solar rays to pass through it and is used as a condensation surface for water vapor. The inclination angle of the cover is a very important parameter that provides confined space to increase the condensation process by fast cooling of the surface and result in more freshwater productivity. The theoretical prediction is obtained by modeling a set of mathematical equations that contain the main parameters necessary to slide the droplet along the surface without detaching it and solving them by using the MATLAB computer program. The simulation technique for the volume of fluid method uses the volume fraction equation with the level set applied in ANSYS Fluent software. The 3D model was created, and a water droplet was applied with adhesion force on the glass. It was found that the size of the droplet represented by its critical radius is a function of inclination angle. Also, it is found that for the angles larger than 15o , water droplets slide over the surface without separation. The optimum cover inclination provides both smooth slidings of droplets along with it and a suitable confined area that increases the rate of evaporation and condensation.
{"title":"Theoretical and Simulation Prediction of Optimum Cover\u0000Inclination To Prevent Fall-Off Condensed Water Droplets","authors":"A. Alshqirate","doi":"10.48103/jjeci522022","DOIUrl":"https://doi.org/10.48103/jjeci522022","url":null,"abstract":"This study presented theoretical and simulation predictions to find the optimum glass cover inclination angle that can\u0000allow the water droplet underneath the surface to slide along it without fall-off. As a case study, the solar still main\u0000component that plays a big role on it is performance is the transparent glass cover that permits solar rays to pass\u0000through it and is used as a condensation surface for water vapor. The inclination angle of the cover is a very important\u0000parameter that provides confined space to increase the condensation process by fast cooling of the surface and result in\u0000more freshwater productivity. The theoretical prediction is obtained by modeling a set of mathematical equations that\u0000contain the main parameters necessary to slide the droplet along the surface without detaching it and solving them by\u0000using the MATLAB computer program. The simulation technique for the volume of fluid method uses the volume fraction\u0000equation with the level set applied in ANSYS Fluent software. The 3D model was created, and a water droplet was\u0000applied with adhesion force on the glass. It was found that the size of the droplet represented by its critical radius is a\u0000function of inclination angle. Also, it is found that for the angles larger than 15o\u0000, water droplets slide over the surface\u0000without separation. The optimum cover inclination provides both smooth slidings of droplets along with it and a suitable\u0000confined area that increases the rate of evaporation and condensation.","PeriodicalId":14808,"journal":{"name":"JORDANIAN JOURNAL OF ENGINEERING AND CHEMICAL INDUSTRIES (JJECI)","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90646412","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 disposal of industrial waste has become a significant environmental issue. In this work, industrial waste, heavy oil fly ash (HOFA) produced from burning heavy oil in the power station was investigated to produce activated carbon (AC) as adsorbent from modified HOFA for lead removal. Batch experiments of lead removal were conducted at a different adsorbent dose and time contact. Equilibrium isotherm results with a good match in with Freundlich model with R2 =0.971which shows the heterogeneous surface of adsorbent and multilayer of adsorbate on the surface of (AC). A maximum adsorption capacity of 10mg/g at equilibrium was achieved. Kinetic study showed rapid adsorption at first 60min, with good matching to second order pseudo model with R
{"title":"Removal of Lead Ions from Simulated Industrial\u0000Wastewater by Using Activated Carbon Produced From\u0000Heavy Oil Fly Ash","authors":"Faten Kamil","doi":"10.48103/jjeci532022","DOIUrl":"https://doi.org/10.48103/jjeci532022","url":null,"abstract":"The disposal of industrial waste has become a significant environmental issue. In this work, industrial waste, heavy oil fly ash (HOFA) produced from burning heavy oil in the power station was investigated to produce activated carbon (AC) as\u0000adsorbent from modified HOFA for lead removal. Batch experiments of lead removal were conducted at a different adsorbent dose and time contact. Equilibrium isotherm results with a good match in with Freundlich model with R2 =0.971which shows the heterogeneous surface of adsorbent and multilayer of adsorbate on the surface of (AC). A maximum adsorption capacity of 10mg/g at equilibrium was achieved. Kinetic study showed rapid adsorption at first 60min, with good matching to second order pseudo model with R","PeriodicalId":14808,"journal":{"name":"JORDANIAN JOURNAL OF ENGINEERING AND CHEMICAL INDUSTRIES (JJECI)","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76338829","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}
O. Al-Ayed, K. Al-Zboon, G. Al-Mazaideh, M. Haddad
{"title":"1","authors":"O. Al-Ayed, K. Al-Zboon, G. Al-Mazaideh, M. Haddad","doi":"10.48103/2021v4i1","DOIUrl":"https://doi.org/10.48103/2021v4i1","url":null,"abstract":"","PeriodicalId":14808,"journal":{"name":"JORDANIAN JOURNAL OF ENGINEERING AND CHEMICAL INDUSTRIES (JJECI)","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80601991","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 : 2020-04-10DOI: 10.1615/jautomatinfscien.v31.i1-3.390
M. Gates, W. Buffet, T. Turner, E. Musk
China's extraordinary economic growth, industrialization, and urbanization, coupled with inadequate investment in basic water supply and treatment infrastructure, have resulted in widespread water pollution. In China today approximately 700 million people--over half the population--consume drinking water contaminated with levels of animal and human excreta that exceed maximum permissible levels by as much as 86% in rural areas and 28% in urban areas. By the year 2000, the volume of wastewater produced could double from 1990 levels to almost 78 billion tons. These are alarming trends with potentially serious consequences for human health. This paper reviews and analyzes recent Chinese reports on public health and water resources to shed light on what recent trends imply for China's environmental risk transition. This paper has two major conclusions. First, the critical deficits in basic water supply and sewage treatment infrastructure have increased the risk of exposure to infectious and parasitic disease and to a growing volume of industrial chemicals, heavy metals, and algal toxins. Second, the lack of coordination between environmental and public health objectives, a complex and fragmented system to manage water resources, and the general treatment of water as a common property resource mean that the water quality and quantity problems observed as well as the health threats identified are likely to become more acute. We thank John Sheer for his contribution to this paper. All interpretations and findings set forth in this paper are solely those of the authors, and do not represent the opinions or policies of their host institutions.
{"title":"issue 3","authors":"M. Gates, W. Buffet, T. Turner, E. Musk","doi":"10.1615/jautomatinfscien.v31.i1-3.390","DOIUrl":"https://doi.org/10.1615/jautomatinfscien.v31.i1-3.390","url":null,"abstract":"China's extraordinary economic growth, industrialization, and urbanization, coupled with inadequate investment in basic water supply and treatment infrastructure, have resulted in widespread water pollution. In China today approximately 700 million people--over half the population--consume drinking water contaminated with levels of animal and human excreta that exceed maximum permissible levels by as much as 86% in rural areas and 28% in urban areas. By the year 2000, the volume of wastewater produced could double from 1990 levels to almost 78 billion tons. These are alarming trends with potentially serious consequences for human health. This paper reviews and analyzes recent Chinese reports on public health and water resources to shed light on what recent trends imply for China's environmental risk transition. This paper has two major conclusions. First, the critical deficits in basic water supply and sewage treatment infrastructure have increased the risk of exposure to infectious and parasitic disease and to a growing volume of industrial chemicals, heavy metals, and algal toxins. Second, the lack of coordination between environmental and public health objectives, a complex and fragmented system to manage water resources, and the general treatment of water as a common property resource mean that the water quality and quantity problems observed as well as the health threats identified are likely to become more acute. We thank John Sheer for his contribution to this paper. All interpretations and findings set forth in this paper are solely those of the authors, and do not represent the opinions or policies of their host institutions.","PeriodicalId":14808,"journal":{"name":"JORDANIAN JOURNAL OF ENGINEERING AND CHEMICAL INDUSTRIES (JJECI)","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85368262","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 nine different technologies are constructed at the pilot scale in one experimental site at Al-Balqa Applied University and use the same wastewater characteristics as the inlet. Monthly samples were collected from the inlet and outlet of nine different decentralized wastewater treatment technologies for three years (June 2016-June 2019). The samples were analyzed for physical, chemical, and biological parameters including TSS, Turbidity, pH, COD, DO, NH4, NO3, TN, BOD, and E. coli. Removal efficiencies for the nine technologies are obtained for COD, BOD, TN, and TSS to be above 95%. NH4 the removal efficiencies for the nine technologies vary and found to be in the range of 27 to 76% while for the E. coli in the range of 65 to 95%. Further, data on energy consumption were collected for each technology and found for the nine investigated technologies in the range of 0.03 to 0.30 Jordan Dinars per treated cubic meter. The investigated technologies were evaluated, and the best options were endorsed. It is concluded that the adaptation of decentralized wastewater treatment will certainly help protect the hydrologic system in Jordan especially in the high lands where significant groundwater recharge occurs and a considerable amount of surface water flows towards Jordan Valley and collection dams.
{"title":"Hydrologic System Protection by Decentralized Wastewater Treatment\u0000Technologies in Jordan","authors":"Naser Almanaseer","doi":"10.48103/JJECI332020","DOIUrl":"https://doi.org/10.48103/JJECI332020","url":null,"abstract":"The nine different technologies are constructed at the pilot scale in one experimental site at Al-Balqa Applied\u0000University and use the same wastewater characteristics as the inlet. Monthly samples were collected from the inlet\u0000and outlet of nine different decentralized wastewater treatment technologies for three years (June 2016-June 2019).\u0000The samples were analyzed for physical, chemical, and biological parameters including TSS, Turbidity, pH, COD,\u0000DO, NH4, NO3, TN, BOD, and E. coli. Removal efficiencies for the nine technologies are obtained for COD, BOD,\u0000TN, and TSS to be above 95%. NH4 the removal efficiencies for the nine technologies vary and found to be in the\u0000range of 27 to 76% while for the E. coli in the range of 65 to 95%. Further, data on energy consumption were\u0000collected for each technology and found for the nine investigated technologies in the range of 0.03 to 0.30 Jordan\u0000Dinars per treated cubic meter. The investigated technologies were evaluated, and the best options were endorsed.\u0000It is concluded that the adaptation of decentralized wastewater treatment will certainly help protect the hydrologic\u0000system in Jordan especially in the high lands where significant groundwater recharge occurs and a considerable\u0000amount of surface water flows towards Jordan Valley and collection dams.","PeriodicalId":14808,"journal":{"name":"JORDANIAN JOURNAL OF ENGINEERING AND CHEMICAL INDUSTRIES (JJECI)","volume":"13 30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82216731","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}
It has been established that the presence of paracetamol in wastewaters can cause a potential risk to the environment. This work examined the possibility of using calcined gypsum in removing paracetamol from aqueous solutions. At neutral pH conditions, calcined gypsum was successful in removing paracetamol via adsorption, from aqueous solutions with a removal efficiency that ranged between 56.8 to 65.3 % of an initial concentration of 600 ppm. Increased temperature (from 20 to 500C) had a minor effect on the removal % of paracetamol while increasing the initial calcined gypsum dose (from 0.5 gm to 3 gm) and contact time (up to 15 min) increased by the removal % of paracetamol. Thermodynamically, the adsorption of paracetamol by calcined gypsum process was found to be spontaneous and endothermic, and more likely a physical process, while kinetically; the Pseudo-Second order model was found to be the best fit compared to the Elovich model. The removal process mainly consists of two stages, and it could be deduced from the kinetic behavior of paracetamol adsorption that the recrystallization process can be another rate-limiting step in the process.
{"title":"Removal of Paracetamol from Wastewater by Calcined Gypsum:\u0000Adsorption and Kinetics Study","authors":"H. Al-Itawi","doi":"10.48103/JJECI322020","DOIUrl":"https://doi.org/10.48103/JJECI322020","url":null,"abstract":"It has been established that the presence of paracetamol in wastewaters can cause a potential risk to the environment. This\u0000work examined the possibility of using calcined gypsum in removing paracetamol from aqueous solutions. At neutral pH\u0000conditions, calcined gypsum was successful in removing paracetamol via adsorption, from aqueous solutions with a removal\u0000efficiency that ranged between 56.8 to 65.3 % of an initial concentration of 600 ppm. Increased temperature (from 20 to 500C)\u0000had a minor effect on the removal % of paracetamol while increasing the initial calcined gypsum dose (from 0.5 gm to 3 gm)\u0000and contact time (up to 15 min) increased by the removal % of paracetamol. Thermodynamically, the adsorption of\u0000paracetamol by calcined gypsum process was found to be spontaneous and endothermic, and more likely a physical process,\u0000while kinetically; the Pseudo-Second order model was found to be the best fit compared to the Elovich model. The removal\u0000process mainly consists of two stages, and it could be deduced from the kinetic behavior of paracetamol adsorption that the\u0000recrystallization process can be another rate-limiting step in the process.","PeriodicalId":14808,"journal":{"name":"JORDANIAN JOURNAL OF ENGINEERING AND CHEMICAL INDUSTRIES (JJECI)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89418180","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}
Christine A. Kolosov, Colleen M. Keating, Ellen Spencer Mussey, Emma Gillett
of the article. Articles should be in MS Word, in Times New Roman, and double-spaced. Citations should conform to A Uniform System of Citation (18th Ed.) (the Bluebook). For questions of literary style, authors should consult The Chicago Manual of Style (15th Ed). Articles or portions of articles already published may be eligible with permission. Please indicate all publications in which your proposed article appears or is forthcoming. Please contact The Modern American with any questions regarding the eligibility of your article. THE MODERN AMERICAN DISCLAIMER No portion of this publication may be reprinted without the express written permission of The Modern American. The views expressed in this publication are those of the writers and are not necessarily those of the editors or American University. American University Washington College of Law is an equal opportunity, affirmative action university. Copyright The Modern American, 2006.
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{"title":"Volume 4 issue 2","authors":"Christine A. Kolosov, Colleen M. Keating, Ellen Spencer Mussey, Emma Gillett","doi":"10.33697/ajur.2005.012","DOIUrl":"https://doi.org/10.33697/ajur.2005.012","url":null,"abstract":"of the article. Articles should be in MS Word, in Times New Roman, and double-spaced. Citations should conform to A Uniform System of Citation (18th Ed.) (the Bluebook). For questions of literary style, authors should consult The Chicago Manual of Style (15th Ed). Articles or portions of articles already published may be eligible with permission. Please indicate all publications in which your proposed article appears or is forthcoming. Please contact The Modern American with any questions regarding the eligibility of your article. THE MODERN AMERICAN DISCLAIMER No portion of this publication may be reprinted without the express written permission of The Modern American. The views expressed in this publication are those of the writers and are not necessarily those of the editors or American University. American University Washington College of Law is an equal opportunity, affirmative action university. Copyright The Modern American, 2006.","PeriodicalId":14808,"journal":{"name":"JORDANIAN JOURNAL OF ENGINEERING AND CHEMICAL INDUSTRIES (JJECI)","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88877005","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}
Bangor university is well known in the UK for its wealth of experience in herpetological research. The university also has an extremely active student herpetological society which arranges site visits, training and conferences on a regular basis and has a meeting every week. A student committee arrange a herpetological seminar every week which in the past has included other students, zoo workers, ecological consultants and researchers and plenty in between! The committee also organises a short field excursion abroad, yearly in the Spring for some lucky members. In 2018 the logistical side of this trip was being handled by a new organisation, Captive and field Herpetology, which is itself owned and founded by a Bangor alumnus. C&F lead herpetological excursions, primarily to India but with more destinations on the horizon, with an emphasis on community engagement and research and try to escape the well-trodden herping paths wherever possible. Slovenia and Croatia were chosen as this year’s BUHS trip destination, following a successful visit there by a previous student group. Unfortunately only a single member from that previous trip managed to join us this year and so most of us had no experience herping whatsoever in these countries. We visited (or attempted to visit!) a few locations used by the previous group but largely relied on opportunistically identified habitat from satellite images and records of species from social media. The rest of this report consists of day by day accounts of the places we journeyed to and the amphibians and reptiles found at each, with healthy doses of field observation and anecdote thrown in for good measure. March 25th London Stansted ---> Ljubljana The first day didn’t see much in the way of herping. Our evening flight from London to Ljubljana was delayed and after losing a further hour to the time difference and
{"title":"Volume 2 issue 1","authors":"James J. Hicks, J. B. Owens","doi":"10.48103/2018v2i1","DOIUrl":"https://doi.org/10.48103/2018v2i1","url":null,"abstract":"Bangor university is well known in the UK for its wealth of experience in herpetological research. The university also has an extremely active student herpetological society which arranges site visits, training and conferences on a regular basis and has a meeting every week. A student committee arrange a herpetological seminar every week which in the past has included other students, zoo workers, ecological consultants and researchers and plenty in between! The committee also organises a short field excursion abroad, yearly in the Spring for some lucky members. In 2018 the logistical side of this trip was being handled by a new organisation, Captive and field Herpetology, which is itself owned and founded by a Bangor alumnus. C&F lead herpetological excursions, primarily to India but with more destinations on the horizon, with an emphasis on community engagement and research and try to escape the well-trodden herping paths wherever possible. Slovenia and Croatia were chosen as this year’s BUHS trip destination, following a successful visit there by a previous student group. Unfortunately only a single member from that previous trip managed to join us this year and so most of us had no experience herping whatsoever in these countries. We visited (or attempted to visit!) a few locations used by the previous group but largely relied on opportunistically identified habitat from satellite images and records of species from social media. The rest of this report consists of day by day accounts of the places we journeyed to and the amphibians and reptiles found at each, with healthy doses of field observation and anecdote thrown in for good measure. \u2028 \u2028 March 25th London Stansted ---> Ljubljana \u2028 The first day didn’t see much in the way of herping. Our evening flight from London to Ljubljana was delayed and after losing a further hour to the time difference and","PeriodicalId":14808,"journal":{"name":"JORDANIAN JOURNAL OF ENGINEERING AND CHEMICAL INDUSTRIES (JJECI)","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86697527","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 most important challenge in a natural gas liquefaction plant is to improve the plant energy efficiency. A process topology should be implemented, which results in a considerable reduction of energy consumption as the natural gas liquefaction process consumes a large amount of energy. In particular, system design focusing on configuring cold part cycle is an attractive option. In this study, various energy recovery-oriented process configurations and the potential improvements of energy savings for small- & midscale liquefied natural gas plants were proposed and compared with almost exclusively commercial trademarks processes. These improved simulation based investigations were validated under the variation in feed gas pressure, mixed refrigerant cooling reference temperature and the pinch temperature of cryogenic plate fin heat exchanger. The simulation results exhibited considerable reduction of specific total energy consumption. Therefore, the proposed liquefaction cycles have a simple topology, hence lower capital cost and compacter plant layout, which is compatible for power-efficient, offshore, floating liquefied natural gas liquefaction plants.
{"title":"Improved Configurations For Liquefied Natural Gas Cycles","authors":"Said Jereis Al Rabadi","doi":"10.48103/jjeci132018","DOIUrl":"https://doi.org/10.48103/jjeci132018","url":null,"abstract":"The most important challenge in a natural gas liquefaction plant is to improve the plant energy efficiency. A process topology should be implemented, which results in a\u0000considerable reduction of energy consumption as the natural gas liquefaction process consumes a large amount of energy. In particular, system design focusing on configuring\u0000cold part cycle is an attractive option. In this study, various energy recovery-oriented process configurations and the potential improvements of energy savings for small- & midscale liquefied natural gas plants were proposed and compared with almost exclusively commercial trademarks processes. These improved simulation based investigations were\u0000validated under the variation in feed gas pressure, mixed refrigerant cooling reference temperature and the pinch temperature of cryogenic plate fin heat exchanger. The\u0000simulation results exhibited considerable reduction of specific total energy consumption. Therefore, the proposed liquefaction cycles have a simple topology, hence lower capital\u0000cost and compacter plant layout, which is compatible for power-efficient, offshore, floating liquefied natural gas liquefaction plants.","PeriodicalId":14808,"journal":{"name":"JORDANIAN JOURNAL OF ENGINEERING AND CHEMICAL INDUSTRIES (JJECI)","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72974767","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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