{"title":"Assessement of Bio-fertilizer Quality of Anaerobic Digestion of Watermelon Peels and Cow Dung","authors":"Dahiru Usman Hassan, S. Abdulsalam","doi":"10.11648/J.CBE.20170203.12","DOIUrl":"https://doi.org/10.11648/J.CBE.20170203.12","url":null,"abstract":"A study was carried out for assessement of bio-fertilizerquality of anaerobic digestion of watermelon peels and cow dung as substrates. Five kilogram (5 kg) each of water melon peels and cow dung were collected, pre-treated and mixed with water in a ratio 1:1 w/v to prepared 18 L slurry that was charged into the batch bio-digester and digested for 35 days at mesophilic temperature of between 26.2-30.8℃. The physicochemical and microbiological analyses of the substrates were determined before and after the digestion process using standard methods. The analyses showed that biochemical oxygen demand, total solids, organic carbon, carbon/nitrogen ratio reduced by 99.84%, 6.22%, 59.32% and 77.25% respectively, while chemical oxygen demand, total suspended solids and pH increased by 67.16%, 86.01% and 24.14% respectively after digestion. Bio-fertilizer yield of 83.35% and biogas yield of 16.65% were obtained. Plants macronutrients (N,P,K) content were substantially increased in the digestates by 78.57%, 89.09% and 84.62%. The presence of Clostridium (nitrogen fixer bio-fertilizer), Bacillus and Pseudomonas (phosphate solubilizing bio-fertilizers) revealed that the digestate was bio-fertilizer. Moreover, the implication of salmonella in the digestate is a major health concern, it is therefore recommended that further study to check if an extended retention period would ensure the removal of Salmonella.","PeriodicalId":185428,"journal":{"name":"Prime Archives in Chemical Engineering","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129642579","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}
H. Sariol, Thayset Mariño Peacok, J. Yperman, K. Leyssens, V. Meynen, A. S. Roca, H. Fals, Á. B. Sauvanell, R. Carleer, José Navarro Campa
{"title":"Characterization of Thermally Regenerated Activated Carbons Used in Rum Production by Acoustic Emission Analysis, N2 and Ar Gas Adsorption","authors":"H. Sariol, Thayset Mariño Peacok, J. Yperman, K. Leyssens, V. Meynen, A. S. Roca, H. Fals, Á. B. Sauvanell, R. Carleer, José Navarro Campa","doi":"10.4172/2090-4568.1000176","DOIUrl":"https://doi.org/10.4172/2090-4568.1000176","url":null,"abstract":"Acoustic emission analysis applied for the characterization of granular activated carbons (GAC) has been barely explored. The porosity of regenerated GAC used in rum production has been assessed using the acoustic emission method based on the signal envelope analysis by band-pass filtering at 1.3 kHz of the sound produced by water flooding the activated carbon. Acoustic measurements have been correlated with porosity and surface area analysis applying argon at 87K and N2 at 77K. The found relationship proves not only the almost equivalency but also the partly complementarity of both techniques and the possibility to determine the regeneration degree of GAC using the acoustic emission method.","PeriodicalId":185428,"journal":{"name":"Prime Archives in Chemical Engineering","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116694566","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}
{"title":"FFA Adsorption from Waste Oils or Non-Edible Oils onto an Anion-Exchange Resin as Alternative Method to Esterification Reaction Prior to Transesterification Reaction for Biodiesel Production","authors":"D. L, Brito A","doi":"10.37247/pacmeng.1.2020.2","DOIUrl":"https://doi.org/10.37247/pacmeng.1.2020.2","url":null,"abstract":"","PeriodicalId":185428,"journal":{"name":"Prime Archives in Chemical Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123110260","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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