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Research on Ammonium Removal from Wastewater by Adsorption and Ozonation Processes 利用吸附和臭氧工艺去除废水中氨的研究

Green Energy and Environmental Technology Pub Date : 2024-07-04 DOI: 10.5772/geet.29

Ján Derco, Nikola Šoltýsová, Ronald Zakhar, Jakub Jurík

{"title":"Research on Ammonium Removal from Wastewater by Adsorption and Ozonation Processes","authors":"Ján Derco, Nikola Šoltýsová, Ronald Zakhar, Jakub Jurík","doi":"10.5772/geet.29","DOIUrl":"https://doi.org/10.5772/geet.29","url":null,"abstract":"With the ongoing amendment of the European Union legislation on the treatment of municipal wastewater, stricter requirements for the removal of pollutants are expected, which calls for the need for innovative wastewater treatment technologies. Our research was focused on the removal of ammonium nitrogen from municipal wastewater by nontraditional processes based on the use of adsorption processes on zeolite (ZEO) and ozone. Adsorption, adsorption-regeneration, and adsorptive ozonation processes were applied. All processes were carried out in a completely stirred reactor (CSR) and a jet-loop reactor (JLR) with external recirculation of the reaction mixture. Experimental measurements were carried out with real municipal wastewater after mechanical treatment. The best results were achieved in the adsorption-regeneration process, which was implemented in a current loop reactor. An average ammonium nitrogen removal efficiency of 53.1% was obtained by adjusting the pH value to 10.0. Average values of 46.2% and 49.2% for chemical oxygen demand (COD) and total organic carbon (TOC) removal efficiencies are an added value of the process. The values of ammonium nitrogen, COD, and TOC removal efficiencies in individual cycles confirm the high stability of the process.","PeriodicalId":479418,"journal":{"name":"Green Energy and Environmental Technology","volume":" 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141679319","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

Design and Simulations of Solar-Based Hydrogen Production System via Methane Decomposition 通过甲烷分解设计和模拟太阳能制氢系统

Green Energy and Environmental Technology Pub Date : 2024-06-04 DOI: 10.5772/geet.26

Ali R. Al Shehhi, Ibrahim M. Gadala, Mohamed S. Gadala

{"title":"Design and Simulations of Solar-Based Hydrogen Production System via Methane Decomposition","authors":"Ali R. Al Shehhi, Ibrahim M. Gadala, Mohamed S. Gadala","doi":"10.5772/geet.26","DOIUrl":"https://doi.org/10.5772/geet.26","url":null,"abstract":"A solar-based hydrogen production system is analyzed and studied with the intention of optimizing the parameters involved in oil refining industry and the environment of the United Arab Emirates. Methane decomposition in molten salt media using a concentrated solar power system was adopted, since the temperature range required in the system design is achievable with this method. The System Advisor Model software was used in this study with three cases to optimize the system using the levelized cost of heat concept. In Case 1, a levelized cost of heat of 9.32 ¢/kWh was achieved using an optimized system with a CSP-RTUVR-2014 receiver and a Luz LS-3 collector. The design of Cases 1 and 2 exhibited pressure drops along the system of just 10 bar, significantly lower than the 50 bar of Case 3. Similarly, designs of Cases 1 and 2 resulted in maximum receiver thermal losses of around 7 MW, whereas Case 3 yielded 14 MW loss. Analysis of the best-suited molten salt option showed that HITEC solar salt was better than HITEC XL and standard HITEC. A regression analysis was carried out to examine the pressure drop responses since it is a key variable affecting the integrity of the solar system. It was observed that the receiver mass flow rate is the main contributing cause of pressure drop. Through careful operator control of receiver mass flow rate, premature failures of the solar system caused by the pressure drop can be avoided.","PeriodicalId":479418,"journal":{"name":"Green Energy and Environmental Technology","volume":"226 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141387022","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

Biogas Generation from Poultry Manure as an Indicator of Reduction in Environmental Pollution and Biomass Potential Contribution to the Energy Grid in Jordan 利用家禽粪便产生沼气作为减少环境污染的指标以及生物质对约旦能源网的潜在贡献

Green Energy and Environmental Technology Pub Date : 2024-05-17 DOI: 10.5772/geet.27

Ali I. Al-Zoubi, Taha M. Alkhamis, Hassan A. Alzoubi

{"title":"Biogas Generation from Poultry Manure as an Indicator of Reduction in Environmental Pollution and Biomass Potential Contribution to the Energy Grid in Jordan","authors":"Ali I. Al-Zoubi, Taha M. Alkhamis, Hassan A. Alzoubi","doi":"10.5772/geet.27","DOIUrl":"https://doi.org/10.5772/geet.27","url":null,"abstract":"This study aims to assess the viability of utilizing poultry manure for biogas production as a means of contributing to the electricity grid and reducing environmental pollution in Jordan. A system consisting of a bioreactor, heating source, biogas collection device, and a subsystem for evaluating the ratio of biomethane to biogas is designed and fabricated. The system operates under mesophilic temperature settings, with a pH of 7, and a carbon-to-nitrogen ratio of 25 to 1. The modified Gompertz system is employed to simulate the experimental results.\u0000 The findings demonstrate that poultry manure has the capacity to generate around 2.032 × 103 cubic meters of biogas per year, which is equivalent to 1.32 × 109 kilowatt-hours or 4.75 × 1012 kilojoules. These numbers account for 7.8% of Jordan’s energy sector and result in an 18% reduction in biowaste, equivalent to 1.08 million tons. Furthermore, the experimental results coincide completely with the modified Gompertz model. These findings indicate that utilizing poultry manure for biogas production has the potential to contribute to the electricity grid in Jordan and reduce environmental pollution caused by biomass.","PeriodicalId":479418,"journal":{"name":"Green Energy and Environmental Technology","volume":"104 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141126062","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