Case Studies in Chemical and Environmental Engineering最新文献_第10页

Unlocking the dehalogenation potential of lead oxide (PbO) via its co-pyrolysis with polyvinyl chloride (PVC) and novel brominated flame retardants (NBFRs) 通过氧化铅（PbO）与聚氯乙烯（PVC）和新型溴化阻燃剂（NBFRs）的共聚解作用挖掘氧化铅（PbO）的脱卤潜力

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-03 DOI: 10.1016/j.cscee.2024.100785

Mohamed Shafi Kuttiyathil , Labeeb Ali , Mirza Belal Beg , Wey Yang Teoh , Mohammednoor Altarawneh

{"title":"Unlocking the dehalogenation potential of lead oxide (PbO) via its co-pyrolysis with polyvinyl chloride (PVC) and novel brominated flame retardants (NBFRs)","authors":"Mohamed Shafi Kuttiyathil , Labeeb Ali , Mirza Belal Beg , Wey Yang Teoh , Mohammednoor Altarawneh","doi":"10.1016/j.cscee.2024.100785","DOIUrl":"https://doi.org/10.1016/j.cscee.2024.100785","url":null,"abstract":"<div><p>The Stockholm Convention treaty of the United Nations Environment Program has impeded the mass production of legacy brominated fire retardants (BFRs) paving the route to introduce novel BFRs (NBFRs) into the industrial market. Tetrabromobisphenol A diallyl ether (TBBPA-DAE), is a widely emerging NBFR with a high rate of production. The deleterious impacts, neurobehavioral consequences and toxic effects of NBFRs have been well-documented. Co-pyrolysis of BFRs with metal oxides has emerged as a potential de-bromination technique in e-waste recycling that curtails the bromine release into the environment. Herein, a multitude of characterization studies are done to probe into the debromination efficiency of lead oxide (PbO) during its co-pyrolysis with TBBPA-DAE via products (char, gas and condensates) analyses. The thermogravimetric analysis suggested a pyrolytic run up to 600 °C. The GCMS analysis showed that the release of brominated compounds was completely restricted in the condensate at 600 °C by increasing the phenol production. This was due to the capture of HBr by the PbO to form PbBr<sub>2</sub>, which was validated by the spectral, XRD and SEM-EDX analyses. The IC analysis also endorsed a better efficiency of PbO in HBr capture (80.04 %) in comparison to the HCl capture (45.57 %) proving that PbO is a good debromination agent envisaging further probes to other emerging NBFRs. The study also investigates the de-chlorination of PVC to establish the universal de-halogenation capacity of PbO toward mixed halogenated plastic wastes.</p></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"10 ","pages":"Article 100785"},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666016424001798/pdfft?md5=cad3b71a228a333881db5294d34feeb3&pid=1-s2.0-S2666016424001798-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141263891","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

Development of intensity-duration-frequency curves for Sri Lanka using satellite-based precipitation products – Understanding environmental conditions and concerns 利用卫星降水产品绘制斯里兰卡降水强度-持续时间-频率曲线--了解环境条件和关切问题

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-01 DOI: 10.1016/j.cscee.2024.100713

S. Zoysa, Jeewanthi Sirisena, H. Perera, Shalinda Fernando, M. Gunathilake, Upaka S. Rathnayake

引用次数: 0

Developing a practical tool to evaluate the cost and benefit of PM2.5 pollution control measures on air quality improvement in Ho Chi Minh City, Vietnam 开发实用工具，评估改善越南胡志明市空气质量的 PM2.5 污染控制措施的成本和效益

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-01 DOI: 10.1016/j.cscee.2024.100729

L. T. Bui, P. Nguyen, D. T. M. Nguyen

引用次数: 0

Mathematical models of controlled drug release applied to an encapsulation system of food active compounds 应用于食品活性化合物封装系统的药物控释数学模型

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-01 DOI: 10.1016/j.cscee.2024.100697

J. Oroná, S. E. Zorrilla, J. Peralta

引用次数: 0

Spatial mapping and analysis of forest fire risk areas in Sri Lanka – Understanding environmental significance 斯里兰卡森林火灾风险区的空间测绘和分析--了解环境意义

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-01 DOI: 10.1016/j.cscee.2024.100680

Randika K. Makumbura, Prasad Dissanayake, M. Gunathilake, Namal Rathnayake, Komali Kantamaneni, Upaka S. Rathnayake

引用次数: 1

Preparation and characterization of anticorrosive and antibacterial coatable nanocomposite based on zinc phosphate modified by Hydroxy Apatite/alginate: Investigation of electrochemical impedance spectroscopy (EIS) 基于羟基磷灰石/精氨酸改性的磷酸锌的防腐抗菌涂层纳米复合材料的制备与表征：电化学阻抗光谱（EIS）研究

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-01 DOI: 10.1016/j.cscee.2024.100694

Arezoo Mohammadkhani, F. Mohammadkhani, M. Sadjadi, N. Farhadyar, M. J. Soltanian Fard, Ehsan Kianfar, Mehdi Zakani

引用次数: 1

Exploration of the distribution features of lithium potential in surface water and rocks around Bangka Island, Indonesia, for renewable energy 探究印度尼西亚邦加岛周边地表水和岩石中的锂潜力分布特征，为可再生能源服务

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-01 DOI: 10.1016/j.cscee.2024.100761

A. Rohiman, H. Setiyanto, Kurnia, Dida Yurnaldi, Vienna Saraswaty, Muhammad Bachri Amran

引用次数: 0

A novel permanganate and peroxide carbon-based avocado seed waste for the adsorption of manganese and chromium ions from water 用于吸附水中锰和铬离子的新型高锰酸盐和过氧化物碳基鳄梨种子废料

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-01 DOI: 10.1016/j.cscee.2024.100782

K. Mabalane, N.D. Shooto, P.M. Thabede

{"title":"A novel permanganate and peroxide carbon-based avocado seed waste for the adsorption of manganese and chromium ions from water","authors":"K. Mabalane, N.D. Shooto, P.M. Thabede","doi":"10.1016/j.cscee.2024.100782","DOIUrl":"10.1016/j.cscee.2024.100782","url":null,"abstract":"<div><p>Activated carbon from avocado seed waste was processed for the sorption of manganese and chromium ions from contaminated water to protect water quality and human health. The aim was to convert pristine avocado seed waste into carbon and then activate it with hydrogen peroxide, potassium permanganate and nitric acid to facilitate the adsorption of manganese and chromium ions from aqueous media. The variation of the parameters such as pH of the solution, reaction time, initial concentration and temperature were investigated. The results show that the adsorbent modified with hydrogen peroxide has a large surface area compared to the other adsorbents. The maximum adsorption capacity for manganese and chromium ions was achieved at a pH value of 2. The results show that the removal efficiency of manganese and chromium ions increases with increasing contact time in the initial phase of the process and the adsorption rate is also fast before reaching equilibrium. The maximum adsorption capacities of manganese and chromium ions were found to be 49.95 and 48.96 mg/g, respectively. The adsorption data also showed that the Freundlich model describes the adsorption isotherm with multilayer coverage well. The highest sorption capacity was observed for the carbon activated with hydrogen peroxide and was expected due to the large surface area. The proposed adsorbent thus represents a cost-effective material that can be considered as a viable alternative for the effective adsorption of manganese and chromium ions from water samples. The experimental conditions and the method used also make the avocado seed waste a suitable material for environmental monitoring.</p></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"10 ","pages":"Article 100782"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666016424001762/pdfft?md5=0df043643f394e3ba9a75a401d1fefe5&pid=1-s2.0-S2666016424001762-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141229339","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 decentralized wastewater treatment system employing Upflow anaerobic sludge blanket and Vertical Flow Constructed Wetland 采用上流式厌氧污泥毯和垂直流构造湿地的分散式污水处理系统的性能

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-01 DOI: 10.1016/j.cscee.2024.100695

Nisreen Obeidat, Khaldoun Shatanawi, G. Kassab, M. Halalsheh

引用次数: 1

Investigation of phosphorus removal from modified starch wastewater using calcium and magnesium ions 利用钙镁离子去除变性淀粉废水中的磷的研究

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-01 DOI: 10.1016/j.cscee.2024.100744

Phung Thi Nguyen, Huu Trong Bui, Hao Gia Nguyen, Ha Manh Bui

引用次数: 0