Pub Date : 2019-11-18DOI: 10.17758/eares8.eap1119138
{"title":"Effects of Different Extraction Methods and Process Conditions in the Yields of Avocado Oil","authors":"","doi":"10.17758/eares8.eap1119138","DOIUrl":"https://doi.org/10.17758/eares8.eap1119138","url":null,"abstract":"","PeriodicalId":38029,"journal":{"name":"Stred","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80575938","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 : 2019-11-18DOI: 10.17758/eares8.eap1119295
{"title":"CFD Modelling of Flow and Temperature Profiles in a Semi-Continuous Coal Stove","authors":"","doi":"10.17758/eares8.eap1119295","DOIUrl":"https://doi.org/10.17758/eares8.eap1119295","url":null,"abstract":"","PeriodicalId":38029,"journal":{"name":"Stred","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78573790","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 : 2019-11-18DOI: 10.17758/eares8.eap1119260
{"title":"Sources of Magnesium used in the Synthesis of Struvite from Wastewater: A Review","authors":"","doi":"10.17758/eares8.eap1119260","DOIUrl":"https://doi.org/10.17758/eares8.eap1119260","url":null,"abstract":"","PeriodicalId":38029,"journal":{"name":"Stred","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74316784","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 : 2019-11-18DOI: 10.17758/eares8.eap1119149
{"title":"Kinetic Modelling of Free Energy for Simultaneous Nitrification and Aerobic Denitrification under High Cyanide Environments","authors":"","doi":"10.17758/eares8.eap1119149","DOIUrl":"https://doi.org/10.17758/eares8.eap1119149","url":null,"abstract":"","PeriodicalId":38029,"journal":{"name":"Stred","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89849446","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 : 2019-11-18DOI: 10.17758/eares8.eap1119442
{"title":"An Investigation into the State of Environmental Education and the use of Technology in Environmental Education in Gauteng, South Africa","authors":"","doi":"10.17758/eares8.eap1119442","DOIUrl":"https://doi.org/10.17758/eares8.eap1119442","url":null,"abstract":"","PeriodicalId":38029,"journal":{"name":"Stred","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87524627","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 : 2019-11-18DOI: 10.17758/eares8.eap1119211
{"title":"The Interaction of Refractory Oxide with Matte","authors":"","doi":"10.17758/eares8.eap1119211","DOIUrl":"https://doi.org/10.17758/eares8.eap1119211","url":null,"abstract":"","PeriodicalId":38029,"journal":{"name":"Stred","volume":"70 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84931296","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 : 2019-11-18DOI: 10.17758/eares8.eap1119432
{"title":"Impact of the Expanded Public Works Programme on Employment Creation and Skills in a South African Metropole Municipality","authors":"","doi":"10.17758/eares8.eap1119432","DOIUrl":"https://doi.org/10.17758/eares8.eap1119432","url":null,"abstract":"","PeriodicalId":38029,"journal":{"name":"Stred","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89320562","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 : 2019-11-18DOI: 10.17758/eares8.eap1119287
{"title":"Categorisation of Enterprise Resource Planning (ERP) Failures: An Opportunity for Formal Methods in Computing","authors":"","doi":"10.17758/eares8.eap1119287","DOIUrl":"https://doi.org/10.17758/eares8.eap1119287","url":null,"abstract":"","PeriodicalId":38029,"journal":{"name":"Stred","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72764337","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 : 2019-11-18DOI: 10.17758/eares8.eap1119303
Carrelle G. Ossinga, M. R. Chowdhury, V. Okudoh
Abstract — Different methods and processes of optimizing the yield of biogas are currently being explored globally. In this study, the use of Iron oxide nanoparticles as an additive to improve the biogas production was carried out. Iron oxide nanoparticles (ION) were synthesized by hydrothermal method. And subsequently, the biomethane potential test was conducted in a 500 mL batch reactor set at mesophilic conditions for a retention time of 15 days. A combination ratio of 100ppm ION to 1.6 g/VS winery solid waste (WSW) was used to run duplicate experiments. Results showed a cumulative biogas yield of 17,17mL /g.VS added for WSW alone (W1) compared to 56,93mL/g.VS added for the combination of WSW and ION (W2) which represents a biogas increase of 232%. In conclusion, ION has chemical properties that boost biogas production irrespective of the type of substrate used. The finding is of interest to the biogas industry along with waste management practitioners. studies made on nanomaterials revealed either negative or positive results with some very low biogas yields in some cases. Otero-Gonzales et al. [9] in 2014 investigated the effect of copper II oxide (CuO) nanoparticles over a long-time period and demonstrated the inhibitive effect of
摘要-目前全球正在探索优化沼气产量的不同方法和过程。在本研究中，使用氧化铁纳米颗粒作为添加剂来提高沼气产量。采用水热法制备了氧化铁纳米颗粒。随后，在500 mL间歇式反应器中进行生物甲烷电位测试，设置中温条件，保留时间为15天。采用100ppm离子与1.6 g/VS酒庄固体废物(WSW)的组合比例进行重复实验。结果表明，累计产气量为17.17 ml /g。单独添加WSW (W1) VS为56,93ml /g。WSW和ION (W2)的组合增加了VS，这代表沼气增加了232%。总之，无论使用何种基质，离子都具有促进沼气生产的化学特性。这一发现引起了沼气行业和废物管理从业者的兴趣。对纳米材料的研究表明，在某些情况下，沼气产量非常低，结果要么是消极的，要么是积极的。Otero-Gonzales等[9]在2014年长期研究了氧化铜纳米颗粒(CuO)的作用，证明了其抑制作用
{"title":"Enhanced Biogas Production from Winery Solid Waste through Application of Iron oxide Nanoparticles","authors":"Carrelle G. Ossinga, M. R. Chowdhury, V. Okudoh","doi":"10.17758/eares8.eap1119303","DOIUrl":"https://doi.org/10.17758/eares8.eap1119303","url":null,"abstract":" Abstract — Different methods and processes of optimizing the yield of biogas are currently being explored globally. In this study, the use of Iron oxide nanoparticles as an additive to improve the biogas production was carried out. Iron oxide nanoparticles (ION) were synthesized by hydrothermal method. And subsequently, the biomethane potential test was conducted in a 500 mL batch reactor set at mesophilic conditions for a retention time of 15 days. A combination ratio of 100ppm ION to 1.6 g/VS winery solid waste (WSW) was used to run duplicate experiments. Results showed a cumulative biogas yield of 17,17mL /g.VS added for WSW alone (W1) compared to 56,93mL/g.VS added for the combination of WSW and ION (W2) which represents a biogas increase of 232%. In conclusion, ION has chemical properties that boost biogas production irrespective of the type of substrate used. The finding is of interest to the biogas industry along with waste management practitioners. studies made on nanomaterials revealed either negative or positive results with some very low biogas yields in some cases. Otero-Gonzales et al. [9] in 2014 investigated the effect of copper II oxide (CuO) nanoparticles over a long-time period and demonstrated the inhibitive effect of","PeriodicalId":38029,"journal":{"name":"Stred","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79541053","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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