Volume 2 issue 1最新文献

Identifying the Effect of Non-Ideal Mixing on a Pre-DenitrificationActivated Sludge System Performance through Model-BasedSimulations 通过基于模型的模拟确定非理想混合对预反硝化活性污泥系统性能的影响

Volume 2 issue 1 Pub Date : 2019-12-01 DOI: 10.48103/jjeci232019

M. Hajaya

{"title":"Identifying the Effect of Non-Ideal Mixing on a Pre-Denitrification\u0000Activated Sludge System Performance through Model-Based\u0000Simulations","authors":"M. Hajaya","doi":"10.48103/jjeci232019","DOIUrl":"https://doi.org/10.48103/jjeci232019","url":null,"abstract":"Effectiveness of a pre-denitrification activated sludge treatment system is governed by the kinetics of the biological\u0000reactions, and the hydrodynamic mixing behavior in the reactors. Achieving good mixing conditions within a reactor not\u0000only enhances the transfer of reactants but also ensures homogeneous environmental conditions throughout the vessel\u0000when required, allowing for an effective usage of the reactor’s total volume, leading to optimized, low-cost operation. In\u0000this work, a pre-denitrification activated sludge system performance with regards to the biological treatment of organic\u0000carbon and nitrogen was investigated, under two scenarios for non-ideal mixing in the anoxic reactor. The system\u0000performance is simulated based upon the Activated Sludge Model 1 model’s biological reactions, and combining two\u0000non-ideal mixing two-parameter models: CSTR with bypass and dead volume, and two CSTRs with exchange.\u0000Performance discrepancies were then identified in the presence of non-ideal mixing. The system’s performance was\u0000found to be more susceptible to the presence of a dead volume/bypass scenario compared to the two CSTRs with\u0000material exchange scenario. Under non-ideal mixing conditions, effluent concentrations of Total Kjeldahl Nitrogen,\u0000organic carbon increased marginally, while effluent concentration of nitrate increased significantly. Similarly, the waste\u0000stream concentrations of Total Kjeldahl Nitrogen and organic carbon increased significantly as a result of an increase in\u0000the concentration of the heterotrophic biomass. The outcome of this study provides an insight when troubleshooting the\u0000operation of pre-denitrification activated sludge systems for non-ideal mixing conditions.","PeriodicalId":127416,"journal":{"name":"Volume 2 issue 1","volume":"256 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114466527","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}

引用次数: 1

Adsorption of Malachite Green by Jordanian Diatomite Ores: EquilibriumStudy 约旦硅藻土矿石吸附孔雀石绿的平衡研究

Volume 2 issue 1 Pub Date : 2019-12-01 DOI: 10.48103/jjeci2122019

Emad El Qada

引用次数: 2

Control of a Benchmark CSTR Using Feedback Linearization 基于反馈线性化的基准CSTR控制

Volume 2 issue 1 Pub Date : 2019-12-01 DOI: 10.48103/jjeci292019

M. Hajaya

引用次数: 3

Theoretical Study of Photovoltaic Thermal Integrated AbsorptionCooling System under Jordan Climate 约旦气候下光伏热集成吸收制冷系统的理论研究

Volume 2 issue 1 Pub Date : 2019-12-01 DOI: 10.48103/jjeci2102019

M. Al-Odat

引用次数: 1

The Ceramic TiO2 Low-Pressure Nano-Filtration Membrane SeparationBehavior for Single and Mixed Ion Salt Solutions 陶瓷TiO2低压纳米过滤膜对单一和混合离子盐溶液的分离行为

Volume 2 issue 1 Pub Date : 2019-12-01 DOI: 10.48103/jjeci2112019

Banan Hudaib

引用次数: 3

Investigate biotransformation of green waste during compostingby aerated static windrow with GORE(R) cover membranetechnology 利用GORE(R)覆盖膜技术研究曝气静态窗堆肥过程中绿色废弃物的生物转化

Volume 2 issue 1 Pub Date : 2019-08-01 DOI: 10.48103/jjeci252019

M. Al-Alawi

{"title":"Investigate biotransformation of green waste during composting\u0000by aerated static windrow with GORE(R) cover membrane\u0000technology","authors":"M. Al-Alawi","doi":"10.48103/jjeci252019","DOIUrl":"https://doi.org/10.48103/jjeci252019","url":null,"abstract":"Composting is considered an economic and effective method of recycling green waste (GW), because it helps\u0000protect the environment and encourages economic development. However, conventional composting\u0000technology is time consuming, generates foul smells, and produces immature compost. The GW composting\u0000process was conducted using an aerated static windrow with GORE(\u0000R\u0000) cover membrane technology, in\u0000combination with an air-floor aeration system at the industrial scale. This study investigated the variation of\u0000physico-chemical properties during the green waste composting process. The composting process was\u0000monitored through the determination of moisture, dry matter (DM), bulk density, water soluble carbon (WSC),\u0000ammonium-N (NH4\u0000+\u0000-N), and nitrate-N (NO3\u0000-\u0000-N) evolution. The technology greatly improved the composting\u0000conditions and compost quality in terms of bulk density, moisture, nitrogen transformation, and WSC. The\u0000results obtained in this study indicate that using an aerated static windrow with GORE(R\u0000) cover membrane\u0000maintain the moisture in optimal conditions by retaining the water within the compost itself increases the\u0000microbial activity and the rate of organic matter (OM) decomposition by microorganisms. Our results support the\u0000recent research indicating that nitrification could occur above temperatures of 45 °C and might be caused by the\u0000existence of microbial communities that are resistant to high temperatures and have the capability to nitrify. The\u0000decreased of NH4\u0000+ content and increased of NO3\u0000-\u0000in the composting materials indicate that the compost has\u0000achieved maturity and is ready for use. The evolution of the GW by using an aerated static windrow with\u0000GORE(R\u0000) cover membrane technology produced a mature product that can be used in agriculture.","PeriodicalId":127416,"journal":{"name":"Volume 2 issue 1","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129149112","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}

引用次数: 2

Preliminaries of the Decay of Metals versus Petroleum Oils 金属对石油的衰变初探

Volume 2 issue 1 Pub Date : 2019-08-01 DOI: 10.48103/jjeci262019

S. Aluvihara

{"title":"Preliminaries of the Decay of Metals versus Petroleum Oils","authors":"S. Aluvihara","doi":"10.48103/jjeci262019","DOIUrl":"https://doi.org/10.48103/jjeci262019","url":null,"abstract":"Petroleum oils are predominantly made of various hydrocarbons with trace compounds including corrosive aided\u0000compounds that basically known as the salts, organic acids and various forms of sulfur. The scope of the current research\u0000was based on the investigations of the effect of salts, organic, elemental sulfur and Mercaptans of crude oils on the\u0000corrosion rates of seven different types of ferrous metals that important in the industry of crude oil refining. As the\u0000procedure the important corrosive properties of two different selected crude oils and the chemical compositions of the\u0000selected ferrous metals were analyzed by the standard instruments and methods. There were determined the corrosion\u0000rates of prepared metal coupons from selected ferrous metals with the similar dimensions after certain immersion time\u0000periods with respect to both crude oils by the weight loss method while analyzing the corroded metal surfaces through the\u0000microscope also simultaneously analyzed the decayed metallic elemental concentrations from metals into crude oils and\u0000the variations of initial hardness of the metals. As the foremost outcomes of the existing analysis there were obtained the\u0000significantly lower corrosion rates from stainless steels which are having at least 12% of chromium with sufficient amount\u0000if nickel, relatively higher corrosive impact from salts especially at the lower temperatures, formations of ferrous sulfides,\u0000ferrous oxides, corrosion cracks and pitting corrosion, significantly decay of copper from Monel metal, higher decay of\u0000ferrous from some of carbon steels and slight reductions of the initial hardness of metals after the formations of the\u0000corrosion on the metal surfaces.","PeriodicalId":127416,"journal":{"name":"Volume 2 issue 1","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126983412","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}

引用次数: 0

The Vapor-Liquid Phase Diagram of Pure Methane UsingTemperature-Dependent Interaction Parameters: A MonteCarlo Simulation 使用温度依赖的相互作用参数的纯甲烷气液相图:一个蒙特卡罗模拟

Volume 2 issue 1 Pub Date : 2019-08-01 DOI: 10.48103/jjeci212019

I. Suleiman

引用次数: 0

Viscosity and Density of 1-Alkanol (C3–C11) Quaternary andQuinary Systems at Different Temperature Levels. 不同温度下1-烷醇(C3-C11)四元和五元体系的粘度和密度。

Volume 2 issue 1 Pub Date : 2019-08-01 DOI: 10.48103/jjeci282019

Nidal M. Hussein

引用次数: 0

A generic concept for Helium purification and liquefaction plant 氦气净化和液化装置的一般概念

Volume 2 issue 1 Pub Date : 2019-08-01 DOI: 10.48103/jjeci272019

Said Jereis Al Rabadi

{"title":"A generic concept for Helium purification and liquefaction plant","authors":"Said Jereis Al Rabadi","doi":"10.48103/jjeci272019","DOIUrl":"https://doi.org/10.48103/jjeci272019","url":null,"abstract":"This study describes and evaluates the performance of producing a pure Helium fraction from Helium extraction\u0000facility designed for cryogenic natural gas plants. A generic concept for obtaining a Helium pure fraction, which has\u0000relatively lower capital and operating costs should be provided. In order to achieve this objective, a new concept for\u0000obtaining a Helium pure fraction from a crude Helium fraction, is proposed based on simulations run under diverse\u0000process conditions regarding crude Helium gas’ temperature, pressure and composition. This concept is\u0000characterized by; reducing the plant safety requirements due to the extensive separation of combustible\u0000components, and compact layout of Helium extraction plant. Further re-purification is included in the subsequent\u0000Helium liquefaction step through selective adsorption, hence then increasing the purity of the Helium product and\u0000reducing the plant energy consumption required for liquefying Helium-rich fraction and the valuable Helium boil-off\u0000routed from the storage facility. The Nitrogen-rich fraction is routed to Nitrogen liquefaction installation. Liquid\u0000Nitrogen is generated within Helium recovery facility for liquid Helium shielding and container cooling. Surplus\u0000gaseous Nitrogen either can be liquefied and used within cryogenic natural gas plant as process coolant or be\u0000vented to atmosphere.","PeriodicalId":127416,"journal":{"name":"Volume 2 issue 1","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133039084","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}

引用次数: 0