Pub Date : 2019-11-18DOI: 10.17758/eares8.eap1119246
{"title":"The Impact of using Mining Pit Water on Flotation Performance of a Sedimentary Phosphate Ore","authors":"","doi":"10.17758/eares8.eap1119246","DOIUrl":"https://doi.org/10.17758/eares8.eap1119246","url":null,"abstract":"","PeriodicalId":38029,"journal":{"name":"Stred","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85998569","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.eap1119262
{"title":"Static Test-Based Acid Rock Drainage Formation Potential of Metalliferous Tailings from O’Kiep, South Africa","authors":"","doi":"10.17758/eares8.eap1119262","DOIUrl":"https://doi.org/10.17758/eares8.eap1119262","url":null,"abstract":"","PeriodicalId":38029,"journal":{"name":"Stred","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91317531","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.eap1119252
{"title":"Development of Light-weight Geopolymeric Materials using Fly Ash and Waste Paper","authors":"","doi":"10.17758/eares8.eap1119252","DOIUrl":"https://doi.org/10.17758/eares8.eap1119252","url":null,"abstract":"","PeriodicalId":38029,"journal":{"name":"Stred","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87459734","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.eap1119300
{"title":"Quantification of Perfluoroalkyl Compounds in Drinking Water Sources of the Western Cape, South Africa","authors":"","doi":"10.17758/eares8.eap1119300","DOIUrl":"https://doi.org/10.17758/eares8.eap1119300","url":null,"abstract":"","PeriodicalId":38029,"journal":{"name":"Stred","volume":"219 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88075567","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.eap1119248
Wicleffe Musingarimi, B. Okeleye, V. Okudoh, S. Ntwampe
Abstract — The effect of anaerobic co-digestion (ACoD) of winery solid waste (WSW) and Zebra manure (ZM) on the enhancement of biogas production was investigated. Biogas was produced by means of an automated single batch anaerobic digester equipped with a pH and temperature control. The fermentation of WSW and ZM was conducted as mono anaerobic digestion (MAD) separately as well as ACoD (1WSW: 2ZM) at 37°C for 30days. Gas production was predicted using Gompertz Model (GM) and Logistic Equation (LE) and measured through downward displacement of acidified water. Results showed the ACoD (1WSW: 2ZM) method produced higher amount of cumulative biogas (952.6mL) as compared to MAD with 30.4mL for WSW and 139.9mL for ZM respectively, after 30 days of retention time. A close fit between the predicted and measured biogas values was observed with correlation coefficient of 0.965 and 0.953 for GM and LE model respectively. Hence, the models can be used to predict biogas yields from ACoD of biodegradable organic waste and ZM. The findings showed the effect of combining WSW with ZM, which could provide essential information and direction for scaling up of biogas production by high-performance ACoD
{"title":"Prediction of Biogas Production from Co-digestion of Winery Solid Waste and Zebra Manure using modified Gompertz Model (GM) and Logistic Equation (LE)","authors":"Wicleffe Musingarimi, B. Okeleye, V. Okudoh, S. Ntwampe","doi":"10.17758/eares8.eap1119248","DOIUrl":"https://doi.org/10.17758/eares8.eap1119248","url":null,"abstract":" Abstract — The effect of anaerobic co-digestion (ACoD) of winery solid waste (WSW) and Zebra manure (ZM) on the enhancement of biogas production was investigated. Biogas was produced by means of an automated single batch anaerobic digester equipped with a pH and temperature control. The fermentation of WSW and ZM was conducted as mono anaerobic digestion (MAD) separately as well as ACoD (1WSW: 2ZM) at 37°C for 30days. Gas production was predicted using Gompertz Model (GM) and Logistic Equation (LE) and measured through downward displacement of acidified water. Results showed the ACoD (1WSW: 2ZM) method produced higher amount of cumulative biogas (952.6mL) as compared to MAD with 30.4mL for WSW and 139.9mL for ZM respectively, after 30 days of retention time. A close fit between the predicted and measured biogas values was observed with correlation coefficient of 0.965 and 0.953 for GM and LE model respectively. Hence, the models can be used to predict biogas yields from ACoD of biodegradable organic waste and ZM. The findings showed the effect of combining WSW with ZM, which could provide essential information and direction for scaling up of biogas production by high-performance ACoD","PeriodicalId":38029,"journal":{"name":"Stred","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87104236","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.eap1119277
{"title":"Efficiency of the WWTP in a Small Town of South Africa to Eradicate E. Coli","authors":"","doi":"10.17758/eares8.eap1119277","DOIUrl":"https://doi.org/10.17758/eares8.eap1119277","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":"76556768","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.eap1119256
{"title":"The Kinetic Dissolution of Copper from Chalcopyrite-containing Carbonatite Tailings Samples in Sulphate Media","authors":"","doi":"10.17758/eares8.eap1119256","DOIUrl":"https://doi.org/10.17758/eares8.eap1119256","url":null,"abstract":"","PeriodicalId":38029,"journal":{"name":"Stred","volume":"111 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79330916","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.eap1119298
{"title":"Incidence of Chlamydia and Gonorrhoeae Infection among Patients at the Namibia Institute of Pathology","authors":"","doi":"10.17758/eares8.eap1119298","DOIUrl":"https://doi.org/10.17758/eares8.eap1119298","url":null,"abstract":"","PeriodicalId":38029,"journal":{"name":"Stred","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76779988","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.eap1119297
{"title":"Molecular Cloning, Over-expression, Kinetic and Structural Properties of Purified Recombinant Family VII Carboxyl esterases","authors":"","doi":"10.17758/eares8.eap1119297","DOIUrl":"https://doi.org/10.17758/eares8.eap1119297","url":null,"abstract":"","PeriodicalId":38029,"journal":{"name":"Stred","volume":"9 3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78597086","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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