The Journal of Solid Waste Technology and Management最新文献

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Effect of Compaction Effort on Penetration Resistance and Shear Strength of Landfilled and Fresh Municipal Solid Waste 压实力对填埋和新鲜生活垃圾抗侵彻性和抗剪强度的影响
The Journal of Solid Waste Technology and Management Pub Date : 2023-09-30 DOI: 10.5276/jswtm/iswmaw/492/2023.240
FN Okonta, M.K Mthethwa, M.B Ntshalintshali, F A Ngankoue
{"title":"Effect of Compaction Effort on Penetration Resistance and Shear Strength of Landfilled and Fresh Municipal Solid Waste","authors":"FN Okonta, M.K Mthethwa, M.B Ntshalintshali, F A Ngankoue","doi":"10.5276/jswtm/iswmaw/492/2023.240","DOIUrl":"https://doi.org/10.5276/jswtm/iswmaw/492/2023.240","url":null,"abstract":"High quality in-situ compaction of municipal solid waste (MSW) is required to ensure landfill stability. However given the heterogeneous composition of MSW, it is important to assess the potential sensitivity of Dynamic cone penetrometers (DCP) and direct shear apparatus to changes in compaction effort, composition and aging effect and different specific work per blow of DCP on penetration resistance (DPI) and shear strength parameters of fresh and excavated Johannesburg landfill municipal solid waste. The results reveal that for average density range of 354kg/m3 to 722kg/m3 the mobilized penetration resistance, DPI was 15–40 mm/blow for DCP specific work per blow of 144 kJ/m2 and 10– 33 mm/blow due to reduced work per blow of 92kJ/m2. The friction angle and cohesion of fresh waste and landfilled waste with fibrous content of 45% and 64% respectively are 19° and 12kPa for fresh waste and 21°and 31kPa for landfilled waste. 24 hours soaking of waste resulted in reduction in friction angle of fresh waste and cohesion of landfilled waste respectively. Controlling the ratio of sand, organics and fibrous content in recycling program is required to increase the stability of landfilled sites exposed to high tropical rainfall.","PeriodicalId":22919,"journal":{"name":"The Journal of Solid Waste Technology and Management","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135084176","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
Optimization of Biogas Purification Employing High-Pressure Water Scrubbing 高压水洗涤沼气净化工艺的优化
The Journal of Solid Waste Technology and Management Pub Date : 2023-09-30 DOI: 10.5276/jswtm/iswmaw/492/2023.225
Tirthankar Mukherjee, Nilay Kumar Sarker, Prasad Kaparaju
{"title":"Optimization of Biogas Purification Employing High-Pressure Water Scrubbing","authors":"Tirthankar Mukherjee, Nilay Kumar Sarker, Prasad Kaparaju","doi":"10.5276/jswtm/iswmaw/492/2023.225","DOIUrl":"https://doi.org/10.5276/jswtm/iswmaw/492/2023.225","url":null,"abstract":"Purification of biogas is the pre-requisite of the commercial application of anaerobic digestion in the renewable energy sector. In this study, Aspen Plus V11.1 was used to determine the optimum process conditions for biogas purification using high-pressure water scrubbing. The non-random two-liquid model (NRTL) coupled with Henry ' s law was used as the fluid package in this study. According to henry ' s law solubility of CO2 is higher than CH4 and thus water was used as an adsorbent. The ideal parameter values for the scrubber were as follows: water pressure: 8 atm, biogas temperature: 37°C or 55°C, scrubber stages: 15, water to biogas mass flowrate ratio: 50. The composition of the biogas i. e., CH4 and CO2 mole fractions can vary in a wide range without effecting the efficiency of the process.","PeriodicalId":22919,"journal":{"name":"The Journal of Solid Waste Technology and Management","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135084179","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
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