Sustainable Chemistry One World最新文献_第3页

Shea butter transesterification through clay-doped BaCl and ionic catalyst; process parameter impacts and kinetic evaluation 粘土掺杂BaCl和离子催化剂催化乳木果油酯交换工艺参数影响及动力学评价

Sustainable Chemistry One World Pub Date : 2025-04-15 DOI: 10.1016/j.scowo.2025.100057

Kenechi Nwosu-Obieogu , Ude Callistus Nonso , Onukwuli Dominic Okechukwu , Ezeugo Joseph

{"title":"Shea butter transesterification through clay-doped BaCl and ionic catalyst; process parameter impacts and kinetic evaluation","authors":"Kenechi Nwosu-Obieogu , Ude Callistus Nonso , Onukwuli Dominic Okechukwu , Ezeugo Joseph","doi":"10.1016/j.scowo.2025.100057","DOIUrl":"10.1016/j.scowo.2025.100057","url":null,"abstract":"<div><div>In this work, Kinetic models were developed to evaluate shea butter (SB) transesterification with methanol using a novel developed clay impregnated with BaCl and ionic liquid (CD-BaCl-IL) catalyst to produce biodiesel and glycerol. To verify their suitability for the process, the synthesized catalyst was characterized using Scanning Electron Micrograph (SEM), X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), X-ray Fluorescence (XRF), and Braut Emmet Teller (BET). The biodiesel was characterized using GCMS (Gas Chromatography Mass Spectrometer) and FT-IR. Kinetic data using CD-BaCl-IL catalyst were obtained at 4 wt% catalyst, 2 hours reaction time, 300 rpm, 10:1 methanol/oil ratio, and 60 °C. Two elementary reaction mechanisms, Eley-Rideal (ER) and Langmuir-Hinshelwood-Hougen-Watson (LHHW) were employed to evaluate the kinetics. The kinetic analysis indicated that the LHHW model accurately represented the experimental data, exhibiting favorable parameters, an R<sup>2</sup> value of 0.999, and a variance of 2.61E-14 at 40°C. The rate-determining step (RDS) was the surface reaction that connected the adsorbed triglyceride and adsorbed alcohol. The rate rose as the temperature increased, suggesting an endothermic process. At a temperature less than the boiling point of alcohol, the frequency factor and activation energy for the reaction were 6.33E6h-1 and 45.3 kJ/mol, respectively. The feasibility of the CD-BaCl-IL catalyst was ascertained as the LHHW model determined that the RDS and the SB fuel properties complied with the ASTM D 6751 standards.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"6 ","pages":"Article 100057"},"PeriodicalIF":0.0,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855316","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 review on nano metal oxides and their nanocomposites for photocatalytic degradation of dyes 纳米金属氧化物及其纳米复合材料光催化降解染料的研究进展

Sustainable Chemistry One World Pub Date : 2025-04-04 DOI: 10.1016/j.scowo.2025.100055

K. Harish Kumar , H.T. Ananda , D.K. Ravishankar , H. Madhu , S. Thirumala

{"title":"A review on nano metal oxides and their nanocomposites for photocatalytic degradation of dyes","authors":"K. Harish Kumar , H.T. Ananda , D.K. Ravishankar , H. Madhu , S. Thirumala","doi":"10.1016/j.scowo.2025.100055","DOIUrl":"10.1016/j.scowo.2025.100055","url":null,"abstract":"<div><div>Water contamination has emerged as a critical global challenge, exacerbated by accelerated industrial growth and urbanization. Organic pollutants, primarily from industrial discharges, and inorganic contaminants such as heavy metals and nitrates severely compromise water quality. Among various remediation approaches, metal oxide semiconductors (e.g., TiO<sub>2</sub>, ZnO, CeO<sub>2</sub>, ZrO<sub>2</sub>, and SnO<sub>2</sub>) have gained significant attention for their photocatalytic capability in degrading organic pollutants and their adsorption and redox potential for inorganic pollutant removal. However, factors such as wide band gaps (requiring UV light) and rapid recombination of photogenerated electron-hole pairs often limit their efficiency. To overcome these challenges, recent advancements have focused on innovative strategies such as doping, nanocomposite formation, and the development of core-shell nanostructures. In particular, rare-earth-doped metal oxides exhibit enhanced interactions with pollutants due to their unique electronic configurations and 4 f orbitals, leading to improved catalytic activity. This review highlights state-of-the-art synthesis techniques for rare-earth-modified metal oxides and nanocomposites, evaluating their performance in degrading organic and inorganic contaminants. It aims to provide a roadmap for developing cost-effective, scalable solutions with significant implications for wastewater treatment and sustainable industrial practices.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"6 ","pages":"Article 100055"},"PeriodicalIF":0.0,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792582","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 of calcium carbonate nanoparticles from mollusc shell waste and its efficacy towards plant growth and development 利用贝类废弃物合成纳米碳酸钙及其对植物生长发育的影响

Sustainable Chemistry One World Pub Date : 2025-04-04 DOI: 10.1016/j.scowo.2025.100056

Rajesh Koley , Mallika Mandal , Arghadip Mondal , Priyanka Debnath , Anupam Mondal , Naba Kumar Mondal

{"title":"Synthesis of calcium carbonate nanoparticles from mollusc shell waste and its efficacy towards plant growth and development","authors":"Rajesh Koley , Mallika Mandal , Arghadip Mondal , Priyanka Debnath , Anupam Mondal , Naba Kumar Mondal","doi":"10.1016/j.scowo.2025.100056","DOIUrl":"10.1016/j.scowo.2025.100056","url":null,"abstract":"<div><div>Sustainable waste management and adequate food supply for a rapidly increasing population are the major goals in the 21st century. In the present study, calcium carbonate nanoparticles (CCNPs) were synthesized from mollusc shell waste and explored its efficacy towards the growth and development of <em>Cicer arietinum</em> L. seedlings. Initially, seeds were allowed to germinate and grow with different concentrations (0, 10, 20, and 30 mg/L) of synthesized CCNPs, and the growth attributes of seedlings were analyzed. The characterization of synthesized nanoparticles revealed that the synthesized nanoparticles were spherical with a diameter ranging from 60 to 70 nm. The results of the growth experiment showed that CCNPs enhanced seed germination, seedling growth, photosynthetic pigments, and primary metabolite content. Additionally, a low level of oxidative stress was recorded under all treatments of CCNPs, and the highest decrease in MDA and O<sub>2</sub>•<sup>-</sup> contents of about 12 % and 23 % were recorded under 30 mg/L of CCNPs compared to the control, respectively. The antioxidant system was improved under CCNPs treatments and the highest increase of about 22 % and 37 % in CAT and SOD activity were recorded at 30 mg/L of CCNPs compared to the control, respectively. The anatomical study suggested that the vascular bundle developed much better in nano-treated seedlings compared to the control and CCNPs have no adverse impact on seedling development. Therefore, the present research demonstrated a sustainable approach to the management of solid waste through the formulation of CCNPs, which could be a potential nanofertilizer in the agricultural sector.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"6 ","pages":"Article 100056"},"PeriodicalIF":0.0,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143807601","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

Green synthesis of saponin-capped copper (II) oxide (CuO) nanoparticles and their efficacy in photocatalytic dye degradation 皂素包覆氧化铜纳米颗粒的绿色合成及其光催化降解染料的效果

Sustainable Chemistry One World Pub Date : 2025-03-26 DOI: 10.1016/j.scowo.2025.100054

Kirat Kaur , S Yamini , Reshma J V , Lakshmi G , Parikshit Kumar , Vagdevi Rao K C , Subhadip Senapati

{"title":"Green synthesis of saponin-capped copper (II) oxide (CuO) nanoparticles and their efficacy in photocatalytic dye degradation","authors":"Kirat Kaur , S Yamini , Reshma J V , Lakshmi G , Parikshit Kumar , Vagdevi Rao K C , Subhadip Senapati","doi":"10.1016/j.scowo.2025.100054","DOIUrl":"10.1016/j.scowo.2025.100054","url":null,"abstract":"<div><div>In recent years, green synthesis of nanoparticles coated with different phytochemicals has emerged as a sustainable approach with multifaceted applications. Green nanoparticles can be synthesized in an environment-friendly way while retaining all the advantages of traditional nanoparticles and more. In this study, a novel saponin-capped copper oxide nanoparticle system was synthesized. Saponin, a secondary metabolite in numerous plants, offers eco-friendly and sustainable alternatives for a wide range of biomedical applications. Saponin was isolated from soapnut in an aqueous medium and a standard protocol for green synthesis of saponin-capped copper oxide nanoparticles was optimized. The synthesized nanoparticles were characterized using various techniques and tested for their ability to photocatalyze the degradation of methylene blue, a toxic synthetic dye. X-ray diffraction confirmed the formation of CuO in both samples and UV–Vis and Fourier transform infrared spectroscopies confirmed the presence of saponin in the green-synthesised samples. Scanning electron microscopic analysis of the samples revealed the formation of bigger nano-spheroids for bare CuO (average diameter 244.1 ± 36.3 nm) and smaller irregular clusters for saponin-capped CuO (average length 147.1 ± 41.6 nm). Both these nanostructures were formed by the accumulation of smaller nanoparticles (<30 nm). Through efficient photocatalytic degradation of methylene blue in water, nanoparticles extended a simple and eco-friendly route for environmental remediation and water purification. Saponin-capped CuO nanoparticles catalyzed 86.32 % degradation of the dye, significantly higher than that degraded by bare copper oxide nanoparticles (13.14 %). The results signified the enhanced potential of the saponin-capped nanoparticles compared to the bare CuO ones as nano-photocatalyst.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"6 ","pages":"Article 100054"},"PeriodicalIF":0.0,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143807602","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

Degradation of potassium diclofenac using ozone: Evaluation of the central compound rotational design and kinetics 臭氧降解双氯芬酸钾：中心化合物旋转设计和动力学的评价

Sustainable Chemistry One World Pub Date : 2025-03-22 DOI: 10.1016/j.scowo.2025.100053

Matheus Londero da Costa , William Leonardo da Silva , Jivago Schumacher de Oliveira

{"title":"Degradation of potassium diclofenac using ozone: Evaluation of the central compound rotational design and kinetics","authors":"Matheus Londero da Costa , William Leonardo da Silva , Jivago Schumacher de Oliveira","doi":"10.1016/j.scowo.2025.100053","DOIUrl":"10.1016/j.scowo.2025.100053","url":null,"abstract":"<div><div>This work aims to use the ozonation process for the degradation of the drug diclofenac potassium (DK), using a rotational design of 2<sup>2</sup> central compounds, varying the DK concentration from 5.9 to 34.1 (mg L<sup>−1</sup>) and O<sub>3</sub> mass flow rate from 292.9 to 1707.1 (mg h<sup>−1</sup>) to verify its degradation kinetics in the ideal condition by the first (FO) and second order (SO) models and theoretically evaluate the degradation mechanism of the DK molecule by verifying the possible intermediates formed in the process. A 68.97 % degradation of DK was observed after 30 minutes of reaction, the best model was PSO with R<sup>2</sup> of 0.952 with <em>k</em><sub><em>2</em></sub> of 0.009 (L (mg min)<sup>−1</sup>) indicating strong interaction of the reagents (DK+O<sub>3</sub>) for the degradation mechanism, the formation of HClO and KClO<sub>3</sub> was noted in the medium. Finally, the degradation of DK with O<sub>3</sub> proved to be effective, enabling the use of this effluent/waste in the formation of commercial products with added value, as in the case of KClO<sub>3</sub>, thus being an environmentally friendly means of promoting the circular economy without harming the environment by forming more waste.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"6 ","pages":"Article 100053"},"PeriodicalIF":0.0,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697798","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

Genetic diversity assessment of Chlorella sp. strains collected from Southern Vietnam 越南南部小球藻品系遗传多样性评价

Sustainable Chemistry One World Pub Date : 2025-02-24 DOI: 10.1016/j.scowo.2025.100052

Tam Minh Phan , Biet Van Huynh

引用次数: 0

Environmentally benign synthesis of 1,4-disubstituted 1,2,3-triazoles: Recent advances and future prospectives 环境无害合成1,4-二取代1,2,3-三唑的研究进展及展望

Sustainable Chemistry One World Pub Date : 2025-02-08 DOI: 10.1016/j.scowo.2025.100051

Lokesh Kumar , Riya Bajaj , Jyoti Sangwan , Kashmiri Lal , Jayant Sindhu

{"title":"Environmentally benign synthesis of 1,4-disubstituted 1,2,3-triazoles: Recent advances and future prospectives","authors":"Lokesh Kumar , Riya Bajaj , Jyoti Sangwan , Kashmiri Lal , Jayant Sindhu","doi":"10.1016/j.scowo.2025.100051","DOIUrl":"10.1016/j.scowo.2025.100051","url":null,"abstract":"<div><div>The utilization of non-renewable sources, toxic reagents and organic solvents in organic synthesis over past few decades resulted into a variety of environmental and health related issues which possess serious threat to humanity and environment. Green reaction methodologies have been evolved as alternative environment benign protocols as they utilize non-conventional sources and recyclable solvents in academic and industrial research laboratories. The current review outlines the practice of green reaction methodologies for the synthesis of 1,4-disubstituted-1,2,3-triazoles using non-hazardous solvents, recyclable catalysts and eliminating deleterious side products. These more sustainable approaches compared to traditional synthetic strategies have been discussed in the present review and systematically categorized into conventional and non-conventional methodologies including microwave, ultrasonic and photochemical. A diverse range of sustainable and environmentally benign synthetic protocols including one-pot cascade synthesis, MCRs and continuous processing may be a valuable addition to the current methodologies for triazole synthesis.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"5 ","pages":"Article 100051"},"PeriodicalIF":0.0,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143421627","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

Bio- inspired synthesis of magnesium oxide nanoparticles from Acalypha indica: Anti-bacterial, anti-oxidant and toxicity study 刺果氧化镁纳米颗粒的生物合成：抗菌、抗氧化及毒性研究

Sustainable Chemistry One World Pub Date : 2025-02-04 DOI: 10.1016/j.scowo.2025.100048

K. Ramaprabha , Panchamoorthy Saravanan , R. Rajeshkannan , S.Venkat Kumar

{"title":"Bio- inspired synthesis of magnesium oxide nanoparticles from Acalypha indica: Anti-bacterial, anti-oxidant and toxicity study","authors":"K. Ramaprabha , Panchamoorthy Saravanan , R. Rajeshkannan , S.Venkat Kumar","doi":"10.1016/j.scowo.2025.100048","DOIUrl":"10.1016/j.scowo.2025.100048","url":null,"abstract":"<div><div>Green synthesis approaches are unique eco-friendly techniques that use a less hazardous methodology to synthesize metal oxide NPs. The present investigation used the <em>Acalypha indica</em> plant leaf extract as a reducing agent to generate Magnesium oxide nanoparticles using a sustainable green synthetic method. The leaves of <em>Acalypha indica</em> was freshly taken and extracted with distilled water and added to the magnesium chloride that was used as a precursor. The synthesized nanoparticles were characterized by various methods. By using UV-Visible Spectrophotometer, the peak at 284 nm confirms the presence of MgO NPs was confirmed. The functional group was identified using the FT-IR. The grain size of the nanoparticles was observed as 10 nm using X-Ray Diffraction analysis. The morphology of the MgO NPs was determined using the SEM analysis and EDAX analysis and Zeta potential were analysed to determine the charge of the NPs. In antibacterial activity, the MgO NPs showed greater efficiency against the pathogen <em>E. coli.</em> The antioxidant activities stated that, the scavenging activity was increased by the increased NPs concentration. The toxicity analysis revealed the positive response in the <em>Vigna radiata</em> seedling growth.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"5 ","pages":"Article 100048"},"PeriodicalIF":0.0,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143213424","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

Pyrolysis of macroalgal biomass: A comprehensive review on bio-oil, biochar, and biosyngas production 大藻生物质的热解：生物油、生物炭和生物合成气生产的综合综述

Sustainable Chemistry One World Pub Date : 2025-02-01 DOI: 10.1016/j.scowo.2025.100050

Hassan Bouaik , Salma Madihi , Meriem El Harfi , Abdelkarim Khiraoui , Adil Aboulkas , Khalifa El Harfi

{"title":"Pyrolysis of macroalgal biomass: A comprehensive review on bio-oil, biochar, and biosyngas production","authors":"Hassan Bouaik , Salma Madihi , Meriem El Harfi , Abdelkarim Khiraoui , Adil Aboulkas , Khalifa El Harfi","doi":"10.1016/j.scowo.2025.100050","DOIUrl":"10.1016/j.scowo.2025.100050","url":null,"abstract":"<div><div>Aquatic biomass has garnered global attention for its potential as a renewable energy source and its environmental benefits. Among various conversion technologies, pyrolysis stands out as one of the most efficient, converting biomass into solid, liquid, and gaseous products with high potential for energy applications. This study provides a comprehensive analysis of different pyrolysis methods in the context of macroalgae processing. It explores how operating parameters, such as temperature, heating rate, and residence time, influence the yield and quality of pyrolysis products, biochar, bio-oil and gas. The findings demonstrate that slow pyrolysis, conducted at lower temperatures and longer residence times, yields higher biochar, while fast pyrolysis, with higher temperatures and shorter residence times maximizes bio-oil production. Intermediate pyrolysis balances biochar and bio-oil outputs, whereas flash pyrolysis favors biofuel production with faster heating rates. Catalytic fast pyrolysis demonstrates strong potential for producing high-value hydrocarbons. Microwave-assisted pyrolysis of macroalgae produces significant syngas and bio-oil with high heating values and lower oxygen content. Additionally, co-pyrolysis with suitable co-feedstocks further enhances bio-oil properties. This study highlights the potential of macroalgae as a renewable resource, emphasizing the versatile applications of pyrolysis products. Harvesting macroalgae during the peak growth, optimizing pyrolysis parameters, integrating complementary techniques, and using efficient catalysts can significantly enhance conversion and yields. Developing cost-effective, sustainable methods—by reducing energy use, minimizing emissions, and ensuring responsible feedstock management—is essential to improve reaction efficiency and product functionality.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"5 ","pages":"Article 100050"},"PeriodicalIF":0.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143143526","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 mechanisms associated with electrocatalytic reactions for oxygen and hydrogen evolution 探讨电催化反应中氧和氢的析出机理

Sustainable Chemistry One World Pub Date : 2025-01-27 DOI: 10.1016/j.scowo.2025.100046

Ajitha Pandian , Laila Rameesha , Chitra Boobalan

引用次数: 0