Waste Management Bulletin最新文献_第8页

Industrial optical sorting for marine plastic litter management 用于海洋塑料垃圾管理的工业光学分拣技术

Waste Management Bulletin Pub Date : 2024-10-20 DOI: 10.1016/j.wmb.2024.10.002

A. Mendoza , G. Kortaberria , D. Carrero , A. Latorre , O.C. Basurko , C. Peña-Rodríguez

{"title":"Industrial optical sorting for marine plastic litter management","authors":"A. Mendoza , G. Kortaberria , D. Carrero , A. Latorre , O.C. Basurko , C. Peña-Rodríguez","doi":"10.1016/j.wmb.2024.10.002","DOIUrl":"10.1016/j.wmb.2024.10.002","url":null,"abstract":"<div><div>The aim of this study is to evaluate the possibility of incorporating marine litter from the coast into the management system of the non-selectively collected fraction of Municipal Solid Waste (MSW). With this purpose, the technical feasibility of automatic separation of marine plastic litter is evaluated, which would allow for subsequent recycling. This solution requires mechanical–biological-treatment plants (MBT) to be able to sort marine plastic litter. Poly (ethylene terephthalate) (PET) bottles constitute one of the most commonly reported types of marine plastics. Considering the sorting methods employed in MBT plants, optical sorting tests were performed with marine PET litter and compared with those for post-consumer municipal PET waste, in order to assess whether the current technology implemented in these plants would allow their automatic sorting. Results show that the separation efficiency of PET degraded under marine conditions and outdoors is very high, and close to that of post-consumer municipal PET waste. The separation efficiency by transparent colour for different types of PET materials evaluated is also very effective and similar to that obtained for separation by chemical composition. Therefore, the chemical differences observed would not affect the efficiency of automatic sorting of marine origin PET in a waste treatment plant.</div></div>","PeriodicalId":101276,"journal":{"name":"Waste Management Bulletin","volume":"2 4","pages":"Pages 102-107"},"PeriodicalIF":0.0,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influencing factors of bentonite for the directional electric repair of landfill HDPE membrane leakage in calcium ion solution 膨润土在钙离子溶液中定向电修复垃圾填埋场高密度聚乙烯膜渗漏的影响因素

Waste Management Bulletin Pub Date : 2024-10-15 DOI: 10.1016/j.wmb.2024.10.001

Guangyuan Yao , Yuqiang Liu , Ya Xu , Jingcai Liu , Can Qian , Yanmei Yang , Zhu Liang (/) , Minsong Lin

{"title":"Influencing factors of bentonite for the directional electric repair of landfill HDPE membrane leakage in calcium ion solution","authors":"Guangyuan Yao , Yuqiang Liu , Ya Xu , Jingcai Liu , Can Qian , Yanmei Yang , Zhu Liang (/) , Minsong Lin","doi":"10.1016/j.wmb.2024.10.001","DOIUrl":"10.1016/j.wmb.2024.10.001","url":null,"abstract":"<div><div>The timely repair of high-density polyethylene (HDPE) membrane leakage in landfills is an important means of environmental risk control, which is critical for preventing leachate from polluting groundwater and soil. Electric repair technology is expected to become a hot spot in the leakage repair of HDPE films, because it can solve the issues of complex operation, high costs, and security risks during the operation and closure of landfills. To explore the influence law of various technical factors on the electric repair process, we carried out single factor experiments on the main influencing factors such as the operation time, bentonite concentration and dispersant/bentonite dosage ratio, leakage size, and calcium concentration. We then explored the best technological conditions. The results showed that accumulation at the leakage site possessed a good repair effect with a permeability coefficient of 4.22 × 10<sup>−6</sup> cm/s. Furthermore, we observed that the Zeta potential played an important role in the electric repair technology, where the higher the absolute value of the Zeta potential, the faster the electrophoretic migration rate of the bentonite particles, and the lower the permeability coefficient of accumulation. This study may serve as a theoretical basis and offer scientific guidance for the directional electric repair of HDPE membrane leakage during the operating period and after the closure of landfills.</div></div>","PeriodicalId":101276,"journal":{"name":"Waste Management Bulletin","volume":"2 4","pages":"Pages 95-101"},"PeriodicalIF":0.0,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142444651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of various types of green biosorbents materials for removals of sulphates from contaminated water for better aquatic environments 合成各种类型的绿色生物吸附剂材料，用于去除受污染水体中的硫酸盐，改善水生环境

Waste Management Bulletin Pub Date : 2024-10-01 DOI: 10.1016/j.wmb.2024.09.006

Subhashish Dey, G.T.N. Veerendra, A.V. Phani Manoj, Siva Shanmukha Anjaneya Babu Padavala

{"title":"Synthesis of various types of green biosorbents materials for removals of sulphates from contaminated water for better aquatic environments","authors":"Subhashish Dey, G.T.N. Veerendra, A.V. Phani Manoj, Siva Shanmukha Anjaneya Babu Padavala","doi":"10.1016/j.wmb.2024.09.006","DOIUrl":"10.1016/j.wmb.2024.09.006","url":null,"abstract":"<div><div>Human and industrial activities pollute water resources with sulphur metal, endangering human health and ecosystems. Chemical precipitation and membrane filtration are expensive when treating large amounts of water, inefficient at low metal concentrations, and produce large amounts of toxic sludge and other products that must be disposed of waste water bio-sorption is eco-friendly and alternative. These methods are cheaper, more accessible, and reusable than conventional ones. This study investigates the bio-sorption of sulphur from contaminated water using neem leaf, custard apple leaf, mango tree leaf, orange peels, and banana peels biological waste materials. This work achieves 100 % removal efficiency. Biosorbents remove sulphates from contaminated water: custard leaves 100 % at 4gm, orange peels 40 % at 5gm, tea waste 50 % at 4gm, neem leaves 70 % at 5gm, and mango leaves 75 % at 5gm. The performances of biosorbents for removals of sulphates from water as follows: Custard leaves waste > Mango leaves > Neem leaves > Tea trash > Orange peels the sulphate reduction by biosorbents. The best biosorption occurred at basic pH 6.5, 3.7gm dosage, 90 min contact duration, 30 °C temperature, and 120 rpm agitation speed. The effects of contact time, agitation speed, adsorbent dosage, pH, and temperature are also examined. Before usage, biosorbents materials can be physically and chemically measured the changes. Regenerating and reusing bio-sorbent after sulphates removals makes the method cost-effective for removals of pollutants from water.</div></div>","PeriodicalId":101276,"journal":{"name":"Waste Management Bulletin","volume":"2 4","pages":"Pages 76-94"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142426764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pyrolysis of hyphaene thebaica shell over ceramic tile dust-derived catalysts and assessment of the produced bio-oil 在瓷砖尘衍生催化剂上热解hyphaene thebaica外壳并评估所产生的生物油

Waste Management Bulletin Pub Date : 2024-09-29 DOI: 10.1016/j.wmb.2024.08.009

Habu Iyodo Mohammed , Kabir Garba , Saeed I. Ahmed , Lawan G. Abubakar

{"title":"Pyrolysis of hyphaene thebaica shell over ceramic tile dust-derived catalysts and assessment of the produced bio-oil","authors":"Habu Iyodo Mohammed , Kabir Garba , Saeed I. Ahmed , Lawan G. Abubakar","doi":"10.1016/j.wmb.2024.08.009","DOIUrl":"10.1016/j.wmb.2024.08.009","url":null,"abstract":"<div><div>The purpose of this study is to demonstrate the potential of ceramic tile dust (CTD)-derived ZSM-5 zeolite (CZ) and its monodispersed composite with metal oxides (MgO and Fe<sub>2</sub>O<sub>3</sub>) in the catalytic pyrolysis of <em>hyphaene thebaica</em> shell (HTS). The HTS was pyrolysed in a Fixed-bed reactor at 400–600 °C, and 100–300 mL/min N<sub>2</sub> flowrate. The maximum bio-oil production of 32 % was obtained at 500 °C and 150 mL/min N<sub>2</sub> flowrate, with bio-oils containing 50 % acid and octadecenoic acids, as well as esters, phenols, aldehydes, ketones, ethers, aromatics, and hydrocarbons. A carboxymethyl cellulose templating agent was employed for the mesoporous zeolite synthesis from CTD. This resulted in the mesoporous zeolite with a predominant ZSM-5 crystal phase, exhibiting pore diameters ranging from 1.8-6 nm, 229 m<sup>2</sup>/g surface area and 1145 μmol/g total acidity. The catalytic pyrolysis of HTS was conducted using the ZSM-5 zeolite (CZ) and metal-oxide (MgO, Fe<sub>2</sub>O<sub>3</sub>, and Fe<sub>2</sub>O<sub>3</sub>/FeO) modified CZ, as monodispersed composite catalysts. Under best thermal pyrolysis conditions, CZ-Fe<sub>2</sub>O<sub>3</sub>, CZ-MgO, and CZ-Fe<sub>2</sub>O<sub>3</sub>/MgO demonstrated 22–23 % bio-oil yields. Notably, the CZ-Fe<sub>2</sub>O<sub>3</sub>/MgO catalyst exhibited the highest hydrocarbon yield at 16 %, while the CZ-MgO favoured the production of phenolics, esters, and alcohols. CZ-MgO also displayed the highest coking level at 7.5 %, indicating faster deactivation than the other catalysts. The synthesised catalysts exhibited remarkable catalytic activity, resulting in a notable improvement in the quality of bio-oils obtained from the intermediate pyrolysis of <em>hyphaene thebaica</em> shells in a fixed-bed reactor.</div></div>","PeriodicalId":101276,"journal":{"name":"Waste Management Bulletin","volume":"2 4","pages":"Pages 64-75"},"PeriodicalIF":0.0,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142426763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Process simulation and optimization of methanol production and utilization for electricity generation 用于发电的甲醇生产和利用的过程模拟与优化

Waste Management Bulletin Pub Date : 2024-09-21 DOI: 10.1016/j.wmb.2024.09.005

Vikram S. Chatake , Harsh V. Rambhia , Sammed S. Bhalerao , Vikram S. Korpale , Jayendra P. Ahire , Aniruddha B. Pandit

引用次数: 0

Converting palm fatty acid distillate into solid adsorbents through zinc chloride activation 通过氯化锌活化将棕榈脂肪酸馏分转化为固体吸附剂

Waste Management Bulletin Pub Date : 2024-09-01 DOI: 10.1016/j.wmb.2024.09.004

Bashir Aderemi Hamzat , Aiman Hakim Supee , Muhammad Abbas Ahmad Zaini

{"title":"Converting palm fatty acid distillate into solid adsorbents through zinc chloride activation","authors":"Bashir Aderemi Hamzat , Aiman Hakim Supee , Muhammad Abbas Ahmad Zaini","doi":"10.1016/j.wmb.2024.09.004","DOIUrl":"10.1016/j.wmb.2024.09.004","url":null,"abstract":"<div><p>Water pollution is a critical environmental concern, and this study explores the potential of utilizing adsorbents from palm fatty acid distillate (PFAD) for the removal of methylene blue (MB) and congo red (CR) dyes from aqueous solution. The PFAD, a by-product of palm oil refining is a valuable adsorbent feedstock because it is freely available, abundant and high in carbon content. The PFAD adsorbents were synthesized via zinc chloride activation and characterized for elemental composition, specific area, surface chemistry and morphology. The process converts the semi-solid PFAD into solid adsorbents with surface area ranging from 22 m<sup>2</sup>/g to 222 m<sup>2</sup>/g. The specific area significantly increased with pyrolysis temperature, and so the adsorption of dyes. The results provide insights into the viability of PFAD adsorbents for effective removal of MB and CR dyes. Nonetheless, the process optimization and the true potential of PFAD adsorbents should be further explored.</p></div>","PeriodicalId":101276,"journal":{"name":"Waste Management Bulletin","volume":"2 3","pages":"Pages 326-332"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949750724000828/pdfft?md5=d411ab5e34c9152d5416839c584959b8&pid=1-s2.0-S2949750724000828-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142241885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Trace elements accumulation in vegetables and soils of waste dumping sites in southwestern Bangladesh and implication on human health 孟加拉国西南部垃圾倾倒场蔬菜和土壤中微量元素的积累及其对人类健康的影响

Waste Management Bulletin Pub Date : 2024-09-01 DOI: 10.1016/j.wmb.2024.09.001

Md. Shafin Ahammed , Sonia Nasrin , Md. Abu Bakar Siddique , Milton Halder

{"title":"Trace elements accumulation in vegetables and soils of waste dumping sites in southwestern Bangladesh and implication on human health","authors":"Md. Shafin Ahammed , Sonia Nasrin , Md. Abu Bakar Siddique , Milton Halder","doi":"10.1016/j.wmb.2024.09.001","DOIUrl":"10.1016/j.wmb.2024.09.001","url":null,"abstract":"<div><p>The untreated municipal solid wastes (MSWs) dumping and improper management causes major concerns of environmental degradation and human health risks. In this study, we collected soil and vegetable from the MSWs dumpsites of Khulna City Corporation (KCC) in southwestern Bangladesh. Trace metals (Pb, Cd, Co, Cr, Cu, Ni, Zn, Fe, Mn) were measured to explore the health risk of cultivated vegetables from dumpsites. Soil contamination was evaluated by geoaccumulation index (Igeo), enrichment factor (EF), contamination factor (CF), and pollution load index (PLI), while health risk was evaluated by transfer factor (TF), estimated daily intake (EDI), target hazard quotient (THQ). Results exhibited that the average trace metals in soil and vegetables followed in the order of Fe > Pb > Mn > Zn > Cu > Cr > Ni > Cd > Co. The Igeo, EF, CF, and PLI values revealed that the soil contamination was dominated by Pd, Cd, Mn, and Zn. The EDI of metals in vegetables were exceed the maximum daily intake only for Fe, Pb, and Cr. The total THQ was > 1, implying potential health hazards for the local people due to the long-term consumption of the cultivated vegetables. The multivariate analysis reveled that the sources of trace metals in the soils and vegetables of dumpsites were natural and anthropogenic. Overall, the findings suggest that growing vegetables in dumpsite is unsafe for long-term consumption by local inhabitants. Immediate action should be taken to protect the environment and human health from trace metal hazards.</p></div>","PeriodicalId":101276,"journal":{"name":"Waste Management Bulletin","volume":"2 3","pages":"Pages 296-308"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949750724000798/pdfft?md5=149cef436f12b5dbc97b51e2a80f684a&pid=1-s2.0-S2949750724000798-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142173865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of the stabilization process of sewage sludge on the mercury content of municipal sewage sludge 污水污泥稳定化工艺对城市污水污泥中汞含量的影响

Waste Management Bulletin Pub Date : 2024-09-01 DOI: 10.1016/j.wmb.2024.09.002

Karol Król, Wiesław Ferens, Dorota Nowak-Woźny, Wojciech Moroń

{"title":"Effect of the stabilization process of sewage sludge on the mercury content of municipal sewage sludge","authors":"Karol Król, Wiesław Ferens, Dorota Nowak-Woźny, Wojciech Moroń","doi":"10.1016/j.wmb.2024.09.002","DOIUrl":"10.1016/j.wmb.2024.09.002","url":null,"abstract":"<div><p>Sewage sludge, the amount of which is increasing every year, must be disposed of on the one hand, and on the other hand it makes a pretty good alternative fuel. However, due to the high mercury content of sewage sludge, its use for energy purposes requires further research. The effect of the technological process of sewage sludge treatment on the mercury content of this end product of wastewater treatment is not fully understood. Therefore, the present study examined 17 sewage sludges from municipal wastewater treatment plants in Lower Silesia for energy properties and mercury content before and after the following technological processes: autothermal aerobic stabilization at temperatures above 50 °C (ATSO), aerobic separated stabilization at effluent temperature (KTSO), separated digestion at ambient temperature (OKF) and separate digestion at 37 °C (WKF). The study showed that the mercury content ranged widely from 0.47 to 6.05 mg/kg Hg, indicating several times higher atmospheric emissions than when using conventional fuels. Among the sewage sludge samples tested, there were samples with very high mercury content, significantly different from the average mercury content of the sludge from the same process line. On this basis, it is concluded that the sewage sludge disposal process leads to the formation of significantly heterogeneous material.</p><p>Sludge stabilization processes (ATSO, KTSO, OKF, and WKF) increase the mercury content of sewage sludge.</p></div>","PeriodicalId":101276,"journal":{"name":"Waste Management Bulletin","volume":"2 3","pages":"Pages 318-325"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949750724000804/pdfft?md5=16ceccc77996fa86b097379d028f7190&pid=1-s2.0-S2949750724000804-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142229898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance of small-scale composting in low ambient temperatures: Effects of adding animal by-products and recycling leachates 小规模堆肥在低环境温度下的性能：添加动物副产品和回收沥滤液的影响

Waste Management Bulletin Pub Date : 2024-09-01 DOI: 10.1016/j.wmb.2024.09.003

Juan Pablo Arrigoni , Gabriela Paladino , Lucas A. Garibaldi , Erik Hedenström , Wennan Zhang , Francisca Laos

{"title":"Performance of small-scale composting in low ambient temperatures: Effects of adding animal by-products and recycling leachates","authors":"Juan Pablo Arrigoni , Gabriela Paladino , Lucas A. Garibaldi , Erik Hedenström , Wennan Zhang , Francisca Laos","doi":"10.1016/j.wmb.2024.09.003","DOIUrl":"10.1016/j.wmb.2024.09.003","url":null,"abstract":"<div><p>Decentralized composting is an emerging method for managing biowaste, engaging waste generators as active recyclers in the waste management cycle. Evaluating performance and identifying optimization opportunities within this composting framework is essential to maximize its benefits and address its challenges. In small-scale composters, fresh waste is continuously mixed with previously added materials, shifting the typical composting process. As with larger systems, the composition of the feedstock influences the temperature profile and the quality of the final product. The issue of whether to include animal-source waste remains controversial in the development of standards and program guidelines. On the other hand, evaluating a leachate recycling method could help prevent nutrient loss and mitigate environmental impacts when bulking agents are lacking. In this study, kitchen and garden wastes were composted in 500-L static composters under cold climate conditions. We examined obtained compost stability, maturity, and quality parameters to determine the effects of adding animal by-product waste and/or recycling leachate. Our findings indicate that including animal by-products allows reaching sanitation temperatures under cold weather conditions and that recycling leachates could reduce nutrient losses and alleviate environmental and other user concerns while improving temperature, stability, maturity, and product quality patterns in decentralized composting.</p></div>","PeriodicalId":101276,"journal":{"name":"Waste Management Bulletin","volume":"2 3","pages":"Pages 309-317"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949750724000816/pdfft?md5=eac44d79b19caaef12feb3905011c765&pid=1-s2.0-S2949750724000816-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142229897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of process parameters on biogas production from food waste using aspen plus simulator 使用 aspen plus 模拟器分析工艺参数对利用食物垃圾生产沼气的影响

Waste Management Bulletin Pub Date : 2024-09-01 DOI: 10.1016/j.wmb.2024.08.010

Adejare Ismaila Adesiyan , Olusola Olaitan Ayeleru , Helen Uchenna Modekwe , Tarhemba Tobias Nyam , Victor Idankpo Ameh , Ishmael Matala Ramatsa

{"title":"Effects of process parameters on biogas production from food waste using aspen plus simulator","authors":"Adejare Ismaila Adesiyan , Olusola Olaitan Ayeleru , Helen Uchenna Modekwe , Tarhemba Tobias Nyam , Victor Idankpo Ameh , Ishmael Matala Ramatsa","doi":"10.1016/j.wmb.2024.08.010","DOIUrl":"10.1016/j.wmb.2024.08.010","url":null,"abstract":"<div><p>This study explores the potential of converting food waste (FW) in South Africa to biogas via anaerobic digestion (AD) using the Aspen Plus Simulator version 11. The simulation modeled the AD process, focusing on hydrolysis, acidogenesis, acetogenesis, and methanogenesis stages, with unconverted substrate recycling at the acetogenesis stage, employing a Non-Random Two-Liquid (NRTL) model for the polar mixture components. The FW used contained 49.86 % volatile solids (VS) of carbohydrates, 39.31 % VS of proteins, and 10.83 % VS of lipids. The results revealed that biogas yield at mesophilic temperature (37 °C) was 50 % higher than at thermophilic temperature (55 °C) with a residence time of 35 days, and methane composition was 45.98 % higher. Methane and carbon dioxide percentage compositions increased with hydraulic retention time (HRT), varying between 37.5–45.5 % and 34.3–39.9 % at mesophilic conditions. Economic analysis indicated a profitable outlook, with a payout period of 3 years, 5 months, and a 15-year positive revenue forecast. The project exhibited an internal rate of return (IRR) of 59.6629 %, suggesting strong economic viability and potential for investment. This study underscores the potential for optimized AD processes to enhance biogas production from FW in South Africa, presenting a viable, eco-friendly waste management solution.</p></div>","PeriodicalId":101276,"journal":{"name":"Waste Management Bulletin","volume":"2 3","pages":"Pages 289-295"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949750724000786/pdfft?md5=824375345bd3c3b6d9ef4103e041c5e3&pid=1-s2.0-S2949750724000786-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142164557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0