Sustainable Chemistry One World最新文献

Selective recovery of iron and aluminum from red mud wastewater using fluidized bed homogeneous crystallization 流化床均匀结晶法选择性回收赤泥废水中的铁和铝

Sustainable Chemistry One World Pub Date : 2025-07-16 DOI: 10.1016/j.scowo.2025.100087

Manh Tuan Truong , Gia Cuong Nguyen , Van Giang Le , Xuan Thanh Bui , The Anh Luu

{"title":"Selective recovery of iron and aluminum from red mud wastewater using fluidized bed homogeneous crystallization","authors":"Manh Tuan Truong , Gia Cuong Nguyen , Van Giang Le , Xuan Thanh Bui , The Anh Luu","doi":"10.1016/j.scowo.2025.100087","DOIUrl":"10.1016/j.scowo.2025.100087","url":null,"abstract":"<div><div>Red mud is a hazardous byproduct originating from the Bayer process during bauxite ore refining that contains substantial quantities of valuable metal ions including iron and aluminum. However, its high alkalinity and large volume pose considerable environmental concerns. In this present work, we developed a two-stage fluidized bed homogeneous crystallization (FBHC) technology for the selective and sequential recovery of ferric hydroxide (Fe(OH)<sub>3</sub>) and bayerite (Al(OH)<sub>3</sub>) from real red mud leachate, without the utilization of heterogeneous seed materials. The crystallization of Fe was optimized at pH 4.0 ± 0.2 and hydraulic retention time (HRT) of 30 min, while Al recovery via FBHC was most effective at pH 9.5 ± 0.3 and up-flow velocity (U) = 25.0 m/h. Iron and aluminum were correspondingly recovered as ferric hydroxide (Fe(OH)<sub>3</sub>) and bayerite (Al(OH)<sub>3</sub>) with total recovery efficiencies reached 99.89 % for Fe(III) and 99.6 % for Al(III). The FBHC technology developed in this study overcomes the limitations of conventional heterogeneous crystallization methods by producing pure products without the need for seed materials and generating less sludge. The resulting crystallized products exhibit uniform spherical shapes (0.5–1.0 nm) and well-defined crystal structures, as confirmed by SEM, EDS, XRD, and FTIR analyses. A preliminary cost-benefit analysis indicated that the proposed process has potential for upscaling and economic implementation in red mud valorization. Recovering metals from red mud helps reduce environmental risks whereas generating economic benefits.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"7 ","pages":"Article 100087"},"PeriodicalIF":0.0,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655270","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

Conversion of biomass into useful adsorbents for oil spill remediation: A comprehensive review 生物质转化为有效的石油泄漏修复吸附剂：综述

Sustainable Chemistry One World Pub Date : 2025-07-15 DOI: 10.1016/j.scowo.2025.100086

Ayomipo M. Ojo , Matthew A. Adebayo , Isiaka A. Amoo

{"title":"Conversion of biomass into useful adsorbents for oil spill remediation: A comprehensive review","authors":"Ayomipo M. Ojo , Matthew A. Adebayo , Isiaka A. Amoo","doi":"10.1016/j.scowo.2025.100086","DOIUrl":"10.1016/j.scowo.2025.100086","url":null,"abstract":"<div><div>The release of liquid hydrocarbons into the natural ecosystem remains a threat to the lives and livelihood of inhabitants in such areas. The demand for oil and its derivatives has led to increased exploration and exploitation activities in the downstream sector. Accidental discharge of crude oil causes environmental degradation in oil-producing areas. It is very difficult to avoid accidental discharge; hence, efforts are being put in place for remediation of the oil spill as soon as it happens. Advanced technologies for oil spill response are the best remediation strategies but are very expensive. High cost of advanced oil spill treatment necessitates the search for affordable methods for remediating oil-polluted water. This article puts together a comprehensive and up-to-date review on oil spillage and occurrences, remediation techniques of oil spillage, sorbents for oil mop up, biomass and conversion of diverse biomass resources for removal of oil, recycling and reusability of spent adsorbents as well as factors influencing removal of oil. Biomass resources are low-cost, renewable, and readily available agricultural byproduct. Efficient utilization of these huge resources reduces disposal problems and adds value to underutilized materials. Conversion of biomass to adsorbents through various treatments (physical or chemical or combination of physical and chemical methods) is now the focus of some researchers and the results are promising. This review investigates the efficacy of biomass-derived sorbents in oil spill remediation, emphasizing their capacity to reduce environmental impact while supporting circular economy strategies through enhanced waste valorization. The prospects of converting biomass into efficient adsorbents for oil removal are also highlighted in this review.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"7 ","pages":"Article 100086"},"PeriodicalIF":0.0,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655272","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

Exploring the prospective application of banana peels (Musa paradisiaca Linn) and rice bran for creating sustainable, eco-friendly wrapping paper 探索香蕉皮（Musa paradisiaca Linn）和米糠在可持续环保包装纸中的应用前景

Sustainable Chemistry One World Pub Date : 2025-07-14 DOI: 10.1016/j.scowo.2025.100085

R. Kamalesh, A. Saravanan, Y.P. Ragini, A.S. Vickram

{"title":"Exploring the prospective application of banana peels (Musa paradisiaca Linn) and rice bran for creating sustainable, eco-friendly wrapping paper","authors":"R. Kamalesh, A. Saravanan, Y.P. Ragini, A.S. Vickram","doi":"10.1016/j.scowo.2025.100085","DOIUrl":"10.1016/j.scowo.2025.100085","url":null,"abstract":"<div><div>Agriculture is the greatest sector of the Indian economy. India generates approximately 350 million tons of agricultural waste annually, much of which is underutilized despite possessing valuable nutritional and functional properties. This study investigates the potential of converting agricultural residues, specifically banana peel, rice bran, and cinnamon oil, into biodegradable wrapping paper. Three formulations (F<sub>1</sub>, F<sub>2</sub>, F<sub>3</sub>) were developed by optimizing component concentrations and evaluated through proximate composition, physicochemical properties, sensory analysis, antioxidant and antimicrobial activity, and biodegradability. Among the formulations, F<sub>3</sub> demonstrated superior performance, with the highest protein content (4.45 %), tensile strength (1232 kg/m²), and elongation (91 %). Sensory evaluation indicated higher consumer acceptability for F<sub>3</sub>. Antioxidant activity was highest in F<sub>3</sub>, with a 75 % DPPH (2,2-Diphenyl-1-picrylhydrazyl) inhibition, and antimicrobial tests showed inhibition zones of 15 mm and 13 mm against <em>Staphylococcus aureus</em> and <em>Escherichia coli</em>, respectively. The wrapping sheet produced exhibited 47 % weight loss by day 15, indicating high biodegradability. The degradation rate was influenced by microbial activity, composition, and sheet thickness. The statistical analysis (one-way ANOVA, Tukey’s test, P ≤ 0.1) confirmed significant differences among formulations, with F<sub>3</sub> consistently outperforming others in mechanical strength, water interaction, and nutrient content. These results highlight the viability of using banana peel and rice bran in eco-friendly wrapping materials suitable for food packaging applications.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"7 ","pages":"Article 100085"},"PeriodicalIF":0.0,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144634483","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

A comprehensive review on nanotechnology and wastewater treatment: a synergistic approach to pollution control 纳米技术与废水处理的综合综述：一种协同控制污染的方法

Sustainable Chemistry One World Pub Date : 2025-07-08 DOI: 10.1016/j.scowo.2025.100082

Soghra Nashath Omer , Panchamoorthy Saravanan , R. Rajeshkannan , S. Venkatkumar

{"title":"A comprehensive review on nanotechnology and wastewater treatment: a synergistic approach to pollution control","authors":"Soghra Nashath Omer , Panchamoorthy Saravanan , R. Rajeshkannan , S. Venkatkumar","doi":"10.1016/j.scowo.2025.100082","DOIUrl":"10.1016/j.scowo.2025.100082","url":null,"abstract":"<div><div>Green synthesis of nanoparticles is regarded as a safer and more sustainable alternative to conventional physical, chemical, and microbial methods, owing to its cost-effectiveness, environmental friendliness, and operational simplicity. One major worldwide issue is the growing scarcity of clean water, which calls for creative and long-lasting treatment methods. Because of the special qualities of nanoparticles, such as their large surface area, increased reactivity, and catalytic potential, nanotechnology has become a promising strategy. An economical and ecologically favorable substitute for traditional treatment techniques is the green production of nanoparticles. This study emphasizes the function of carbon nanotubes, metal oxides, and zero-valent metal nanoparticles in wastewater treatment. They have proven to be useful in eliminating organic pollutants, microbiological contaminants, and heavy metals through their use in pollutant degradation, adsorption, and catalysis. Metal oxides are effective photocatalysts, and zero-valent metals are very reactive in lowering harmful contaminants. By use of oxidation and adsorption processes, carbon-based nanomaterials improve the removal of pollutants. Their large-scale use is hampered by issues including toxicity, environmental persistence, and high production costs, despite their benefits. Optimizing nanoparticles production for increased stability, effectiveness, and environmental friendliness requires more study. For their safe and sustainable use, it is essential to look at possible hazards and their long-term effects on the ecosystem. Furthermore, developments in nanocomposites and green nanotechnology have the potential to provide next-generation water treatment systems. Concerns about water shortage throughout the world may be addressed by combining nanomaterials with traditional treatment techniques to improve water purification effectiveness.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"7 ","pages":"Article 100082"},"PeriodicalIF":0.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632421","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

Mechanistic insights and ANN modeling of eriochrome black and basic orange dye adsorption using surface activated algal-manila tamarind seed biomass 表面活化藻马尼拉罗望子生物量吸附铬黑和碱性橙染料的机理及人工神经网络建模

Sustainable Chemistry One World Pub Date : 2025-07-08 DOI: 10.1016/j.scowo.2025.100084

S. Karishma, V.C. Deivayanai, P. Thamarai, A. Saravanan, A.S. Vickram, Y.P. Ragini

{"title":"Mechanistic insights and ANN modeling of eriochrome black and basic orange dye adsorption using surface activated algal-manila tamarind seed biomass","authors":"S. Karishma, V.C. Deivayanai, P. Thamarai, A. Saravanan, A.S. Vickram, Y.P. Ragini","doi":"10.1016/j.scowo.2025.100084","DOIUrl":"10.1016/j.scowo.2025.100084","url":null,"abstract":"<div><div>Acid activation for adsorbent modification aims at enhancing the surface characteristics and adsorption nature. Artificial Neural Network (ANN) enables the prediction and precise modeling of adsorption processes for enhanced pollutant removal through optimization. The current research explores the mechanistic insights and ANN modeling for eriochrome black (EB) and basic orange (BO) dye adsorption using acid activated algal-manila tamarind seed biomass. Characterization analysis of Brunauer-Emmett–Teller (BET) analysis and X-Ray Photoelectron Spectroscopy (XPS) analysis confirmed the adequate surface properties and elements for the dye remediation. BET and XPS analysis revealed the porous diameter to be 2.868 nm with carbon composition of 79.28 %. Batch adsorptive analysis revealed the optimal parameters for dye adsorption to be 1.25 g/L dose, 40 min process time, pH of 5 and 8 for eriochrome black and basic orange dye. Sips model proved to be the best fitting isotherm with maximum adsorption of 253.6 mg/g of eriochrome black and 282.4 mg/g basic orange dye adsorption was observed. ANN Back propagation algorithm with Levenberg-Marquandt (LM) algorithm was observed to be optimal for the ANN model development. The mathematical predictive modeling of adsorption using artificial neural network revealed the correlation coefficient to be 0.9974 for BO dye and 0.9902 for EB dye adsorption using acid activated mixed biomass. The acid activated algal-plant seed biomass can be reused up to 7 consecutive adsorption cycles.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"7 ","pages":"Article 100084"},"PeriodicalIF":0.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632577","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

Harnessing magnetic nanoparticles for cleaner water: A green technology perspective 利用磁性纳米颗粒清洁水：绿色技术的视角

Sustainable Chemistry One World Pub Date : 2025-07-06 DOI: 10.1016/j.scowo.2025.100083

Sangeeta Bhogal , Ravinder Sharma

{"title":"Harnessing magnetic nanoparticles for cleaner water: A green technology perspective","authors":"Sangeeta Bhogal , Ravinder Sharma","doi":"10.1016/j.scowo.2025.100083","DOIUrl":"10.1016/j.scowo.2025.100083","url":null,"abstract":"<div><div>Magnetic nanoparticles (MNPs) and their composites have emerged as promising materials for wastewater treatment, with applications ranging from heavy metal adsorption to organic pollutant degradation and pathogen removal. The rapid expansion of industrial processes has intensified the need for efficient wastewater treatment solutions. This review highlights the unique properties that make MNPs suitable for water purification, including their magnetic recovery, high surface coverage and customizable surface functionalities. The paper also reviews recent advancements in MNP composite materials that enhance pollutant abstraction efficiency. Current challenges, such as environmental impact and production costs, are discussed along with potential future directions for research to promote sustainable wastewater treatment solutions. This paper explores the mechanisms, applications, and varieties of magnetic nanoparticles employed in wastewater treatment highlighting the current challenges and future perspectives. By examining recent innovations such as functionalized MNPs and bio-char composites, we underscore the potential for MNPs to contribute to sustainable water management.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"7 ","pages":"Article 100083"},"PeriodicalIF":0.0,"publicationDate":"2025-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144570494","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

Synthesis and Characterization of MnFe2O4 and Clay/MnFe2O4 using neem leaves for photodegradation and radical scavenging studies 用楝树叶片制备MnFe2O4和Clay/MnFe2O4及其光降解和自由基清除研究

Sustainable Chemistry One World Pub Date : 2025-07-04 DOI: 10.1016/j.scowo.2025.100081

H. Madhu, S. Rajendra prasad

{"title":"Synthesis and Characterization of MnFe2O4 and Clay/MnFe2O4 using neem leaves for photodegradation and radical scavenging studies","authors":"H. Madhu, S. Rajendra prasad","doi":"10.1016/j.scowo.2025.100081","DOIUrl":"10.1016/j.scowo.2025.100081","url":null,"abstract":"<div><div>This study presents the green synthesis of MnFe<sub>2</sub>O<sub>4</sub> and Clay/MnFe<sub>2</sub>O<sub>4</sub> composites using neem leaf extract via a reflux method. Comprehensive characterization of the materials was performed using X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), energy-dispersive X-ray analysis (EDX), and UV-Vis’s spectroscopy. The photocatalytic activity was assessed for Methyl Violet (MV) dye degradation under UV light, achieving an impressive 98.54 % efficiency with the Clay/MnFe<sub>2</sub>O<sub>4</sub> composite at an initial dye concentration of 10 ppm within 90 min, following first-order kinetics, with a calculated half-life of 15.33 min. Additional studies on catalyst recyclability, total organic carbon (TOC) reduction, scavenger effects, and pH influence confirmed the composite’s efficiency and durability. Antioxidant activity was evaluated using the DPPH assay, where Clay/MnFe<sub>2</sub>O<sub>4</sub> exhibited a high scavenging efficiency of 81.4 % and an IC₅₀ value of 253.644 µg/mL, outperforming the individual components. These findings underline the potential of Clay/MnFe<sub>2</sub>O<sub>4</sub> composites for environmental remediation and antioxidant applications.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"7 ","pages":"Article 100081"},"PeriodicalIF":0.0,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144588550","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

Multiple pesticide residues in rice and chlorpyrifos persistence in peat soils 水稻中多种农药残留和毒死蜱在泥炭土中的持久性

Sustainable Chemistry One World Pub Date : 2025-06-30 DOI: 10.1016/j.scowo.2025.100080

Indra Purnama , Farag Malhat , Anisa Mutamima , Nelvia Nelvia , Amalia Amalia

{"title":"Multiple pesticide residues in rice and chlorpyrifos persistence in peat soils","authors":"Indra Purnama , Farag Malhat , Anisa Mutamima , Nelvia Nelvia , Amalia Amalia","doi":"10.1016/j.scowo.2025.100080","DOIUrl":"10.1016/j.scowo.2025.100080","url":null,"abstract":"<div><div>Pesticide contamination in food crops and agricultural soils poses a significant risk to food safety and environmental health. This study examined pesticide residues in rice cultivated on peat soils and investigated the persistence of chlorpyrifos in those soils. A total of 41 rice samples from peatland paddy fields were analyzed using GC-MS/MS and LC-MS/MS, revealing 19 different pesticide active ingredients. Propiconazole (71 %), azoxystrobin (56 %), and chlorpyrifos (49 %) were the most frequently detected compounds, with several residues exceeding maximum residue limits (MRLs). To explore the potential soil-to-plant transfer, 16 peat soil samples were analyzed specifically for chlorpyrifos. Despite discontinued use for over a year, chlorpyrifos was still detected above 0.01 mg/kg in 50 % of the soils. These results suggest that peat soils—with their high organic matter content and anaerobic conditions—can prolong chlorpyrifos persistence, potentially contributing to residual contamination in rice. The findings support the need for stricter pesticide monitoring, targeted soil assessments, and adoption of integrated pest management (IPM) practices to reduce health and ecological risks in peatland-based agriculture.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"7 ","pages":"Article 100080"},"PeriodicalIF":0.0,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518691","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

Machine learning for fault detection in refrigeration systems using difluoromethane refrigerant 使用二氟甲烷制冷剂的制冷系统故障检测的机器学习

Sustainable Chemistry One World Pub Date : 2025-06-29 DOI: 10.1016/j.scowo.2025.100077

Tue Duy Nguyen , Ha Manh Bui

{"title":"Machine learning for fault detection in refrigeration systems using difluoromethane refrigerant","authors":"Tue Duy Nguyen , Ha Manh Bui","doi":"10.1016/j.scowo.2025.100077","DOIUrl":"10.1016/j.scowo.2025.100077","url":null,"abstract":"<div><div>Refrigeration systems are vital to residential and industrial cooling applications; however, faults such as refrigerant leakage and air filter clogging can severely compromise energy efficiency and reduce equipment lifespan. This study explores the potential of four machine learning (ML) models—Naïve Bayes, Generalized Linear Model (GLM), Decision Tree and Random Forest—for detecting two prevalent fault types in systems using difluoromethane (R32) as the working fluid. A synthetic dataset comprising 1998 samples was developed in Python, simulating normal operation alongside refrigerant leakage and filter clogging scenarios, based on the technical characteristics of R32 air-conditioning systems. Feature engineering and statistical visualization techniques were employed to enhance classification accuracy. All models demonstrated high predictive performance (accuracy >96 %), with Naïve Bayes achieving 100 % accuracy, indicating potential overfitting. Decision Tree and Random Forest models maintained strong generalization capabilities, with accuracies of 97.9 % and 97.4 %, respectively, suggesting practical applicability in real-time fault diagnosis. The proposed approach enables early detection of operational issues, thereby reducing energy losses and extending system service life. This research aligns with the United Nations Sustainable Development Goals (SDGs), particularly SDG 7 (Affordable and Clean Energy), SDG 9 (Industry, Innovation and Infrastructure) and SDG 12 (Responsible Consumption and Production), by fostering intelligent and sustainable solutions for residential cooling technologies.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"7 ","pages":"Article 100077"},"PeriodicalIF":0.0,"publicationDate":"2025-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144535015","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

Effects of acid concentration on the synthesis of alumina nanoparticles from waste aluminum shavings using chemical precipitation technique 酸浓度对废铝刨花化学沉淀法合成纳米氧化铝的影响

Sustainable Chemistry One World Pub Date : 2025-06-29 DOI: 10.1016/j.scowo.2025.100079

Babatunde Oji , Sunday G. Borisade , Seun S. Owoeye

{"title":"Effects of acid concentration on the synthesis of alumina nanoparticles from waste aluminum shavings using chemical precipitation technique","authors":"Babatunde Oji , Sunday G. Borisade , Seun S. Owoeye","doi":"10.1016/j.scowo.2025.100079","DOIUrl":"10.1016/j.scowo.2025.100079","url":null,"abstract":"<div><div>In recent times, efforts have been tailored towards sustainable practices and environmental preservation through recycling and use of waste materials. In this regards, this study explores the possibility of synthesizing alumina nanoparticles from waste aluminum shavings (Alsc) using chemical precipitation method. Waste Alsc were initially obtained from aluminum profiles machining workshops dump. Appropriate amount of Alsc powder was reacted with varying concentrations of 3, 4, 5 and 6 M hydrochloric acid (HCl), respectively at 120 °C for 2 h to obtained AlCl<sub>3</sub> solution. Alumina nanoparticles (AlNPs) were precipitated following the addition of 4 M NaOH to each AlCl<sub>3</sub> filtrate obtained. The precipitated AlNPs were aged for 24 h followed by drying, then calcined at 600 °C to obtain pure alumina (Al<sub>2</sub>O<sub>3</sub>) powder. The AlNPs were then characterized for their phase, morphology, functional group, particle size, and alumina yield. The results showed the synthetized AlNPs are highly amorphous alumina (γ-Al<sub>2</sub>O<sub>3</sub>) while the morphology showed particle agglomeration increase with increased HCl concentration. TEM showed the particle size ranged within 7.22–14.40 nm, 5.53–5.54 nm, 15.20–17.30 nm, and 15.20–17.30 nm for 3, 4, 5 and 6 M HCl respectively. The quantitative analysis showed alumina purity increase at increasing acid concentration with value ranged from 76.9, 84.5, 85.2, and 88.7 wt% for 3, 4, 5 and 6 M HCl, respectively, while trace amounts of other constituents are noticeable. This research highlights the potential of converting aluminum waste into high-value materials for sustainable applications.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"7 ","pages":"Article 100079"},"PeriodicalIF":0.0,"publicationDate":"2025-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144563214","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