Sustainable Chemistry for the Environment最新文献

{"title":"Comprehensive insights into biological and bio-electrochemical treatment of the sago industry wastewater: Challenges and future perspectives","authors":"Subramaniapillai Niju ,&nbsp;V. Shruthi,&nbsp;K. Priyadharshini","doi":"10.1016/j.scenv.2025.100242","DOIUrl":"10.1016/j.scenv.2025.100242","url":null,"abstract":"<div><div>The food industrial sector holds a crucial position, as it satisfies the basic human need for sustenance while contributing to economic growth. Within this sector, the sago industry plays a vital role in the small-scale industrial sector and contributes to the local economy. However, the processing of tapioca roots requires a large quantity of water and simultaneously generates a large volume of the wastewater. The wastewater generated is highly organic in nature, which poses a serious threat to the environment if untreated. Conventional treatment methods are highly expensive and struggle to effectively manage the high pollutant load. So, there is a need for sustainable and cost-efficient treatment options. Biological treatment methods, particularly use of anaerobic processes, along with aerobic methods, are highly effective in reducing Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD) in sago wastewater because of its organic Content. However, these methods face enormous challenges, such as the need for the optimized operational conditions when dealing with varying wastewater compositions. In context to that the bioelectrochemical system, MFCs offers a sustainable approach by combining wastewater treatment along with bioelectricity generation. Use of this technique is highly advantageous, including improved COD removal and energy recovery. At the same time, they face some of the notable challenges, including scalability of the system performance. This review provides detailed knowledge on the characteristics nature of the sago wastewater and highlights the importance of biological treatment methods, pinpointing on aerobic and anaerobic treatments, as well as bio-electrochemical systems, emphasizing their role in COD removal and power generation.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"10 ","pages":"Article 100242"},"PeriodicalIF":0.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143683829","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}

{"title":"Facile preparation of triangular-like polycrystalline ceria as supporting carrier in catalysis exemplified by Ni/CeO2 catalyzed oxidation and hydrogenation reactions","authors":"Sofia Stefa ,&nbsp;Maria Lykaki ,&nbsp;Georgios Varvoutis ,&nbsp;Maria Zografaki ,&nbsp;Vassilios D. Binas ,&nbsp;George E. Marnellos ,&nbsp;Michalis Konsolakis","doi":"10.1016/j.scenv.2025.100243","DOIUrl":"10.1016/j.scenv.2025.100243","url":null,"abstract":"<div><div>Ceria is a reducible oxide that has been extensively employed as supporting carrier in catalysis due to its unique redox and structural properties in combination with its strong interaction with the active phases. Recently, the synthesis of ceria nanostructures with uniform size and morphology has become a topic of extensive scientific interest in catalysis. Therefore, the combination of earth-abundant and cost-effective transition metals with fine-tuned ceria carriers could provide a platform for multifunctional materials in several energy and environmental applications. Herein, we originally explore the facile synthesis of ceria particles of triangular-like morphology with improved textural and structural characteristics and their subsequent application as supporting carrier of nickel active phase. The as-prepared Ni/CeO₂ catalysts were thoroughly characterized and catalytically assessed for both oxidation (CO oxidation) and reduction (CO₂ hydrogenation) processes to demonstrate the effectiveness of ceria triangular structures as supporting materials in catalysis. The results clearly revealed the pivotal role of ceria nanostructure on the physicochemical properties and in turn on the catalytic performance of the nickel-ceria binary system. The improved reducibility and oxygen kinetics of ceria carrier, along with its abundance in structural defects and Ce³⁺ species, could be considered as the dominant factors towards determining the catalytic performance, offering highly active and selective ceria-based transition metal catalysts.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"10 ","pages":"Article 100243"},"PeriodicalIF":0.0,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143683830","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}

{"title":"Comparison of physical, chemical, physico-chemical, and enzymatic pretreatment of paddy straw for ethanol production","authors":"Sudarshan Sahu ,&nbsp;Urbi Bansal ,&nbsp;Gursharan Singh ,&nbsp;Shailendra Kumar Arya","doi":"10.1016/j.scenv.2025.100239","DOIUrl":"10.1016/j.scenv.2025.100239","url":null,"abstract":"<div><div>The global shift towards renewable energy has heightened the importance of bioethanol as a sustainable alternative to fossil fuels, addressing environmental concerns and reducing greenhouse gas emissions. Sustainable chemistry offers innovative solutions for converting agricultural residues into valuable biofuels, yet challenges in optimizing pretreatment and enzymatic processes persist. This study addresses these gaps by systematically comparing physical, chemical, physicochemical, and enzymatic pretreatments to enhance ethanol yields from paddy straw. Methods included alkali, sonication, and alkali-assisted sonication treatments to modify substrate composition, followed by enzymatic hydrolysis using cellulase, xylanase, and mannanase. Results revealed that alkali-assisted sonication yielded the highest reducing sugar concentrations (30 ± 0.8 mg/mL) and ethanol productivity (0.41 g/L/h), with a saccharification percentage of 89 % and ethanol yield of 0.58 g/L. In contrast, xylanase exhibited a saccharification percentage of 83 % with an ethanol productivity of 0.28 g/L/h, while cellulase achieved 85 % saccharification and 0.35 g/L/h ethanol productivity. Mannanase showed the lowest performance with 79 % saccharification and 0.21 g/L/h ethanol productivity. A synergistic enzyme cocktail maximized substrate breakdown and sugar release. This research underscores the critical role of pretreatment and enzyme selection in advancing bioethanol production, offering a sustainable pathway to valorize agricultural waste into clean energy.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"10 ","pages":"Article 100239"},"PeriodicalIF":0.0,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642770","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}

{"title":"Electrochemical abatement of diclofenac with various electrode systems for water treatment applications","authors":"Atla Shashi Bairagi","doi":"10.1016/j.scenv.2025.100237","DOIUrl":"10.1016/j.scenv.2025.100237","url":null,"abstract":"<div><div>Treating pharmaceutical wastewater is one of the biggest challenges of the present century and is widely detected in surface and groundwater. The release and accumulation of biologically active Diclofenac (DCF) pharmaceutical waste into natural water bodies and groundwater harms aquatic and human life. It is often detected in aquatic environments due to the high consumption of DCF worldwide. Conventional technologies with different physical and biological treatment methods are inefficient in their effective removal and leave traces of DCF untreated. Anodic oxidation is a promising technology for the degradation of an organic pollutant. An electrochemical method of generating radicals is cost-effective and environmentally cleaner and achieves complete mineralization/scission of the DCF to CO₂, water, and inorganic ions. Oxidative reactive species such as hydroxyl radical, hydrogen peroxide, ozone, hypochlorous acid, and other inorganic radicals are generated in situ subjected to the type of water matrices present. The concurrent generation of different reactive species and their simultaneous presence (radicals and other active components) brings the complete degradation of DCF. The electrodes and electrolytic systems present the crucial parameters in generating highly reactive intermediates at the electrode surface. An inexpensive electrode material that meets the requirement of high electroactivity and is chemically stable under reactions is necessary for the successful large-scale implementation of DCF wastewater treatment. Different electrodes such as boron-doped diamond, carbon-based, and metal oxides and their efficiency in the electro-mineralization process of DCF are discussed. The DCF oxidation mechanism via C-N scission, decarboxylation, and hydroxylation process is illustrated comprehensively with different chemical structure formations.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"10 ","pages":"Article 100237"},"PeriodicalIF":0.0,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628099","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}

{"title":"Influence of chemical concentrations on the physicochemical, structural, functional and color characteristics of chitin isolated from Arabian red shrimp (Aristeus alcocki)","authors":"M.K. Rasweefali ,&nbsp;A. Nayana ,&nbsp;M.K. Raseel Rahman ,&nbsp;H. Habeebrehman ,&nbsp;S. Sabu","doi":"10.1016/j.scenv.2025.100233","DOIUrl":"10.1016/j.scenv.2025.100233","url":null,"abstract":"<div><div>This study examines the physicochemical, functional and structural characteristics of α-chitin extracted from the exoskeleton of Arabian red shrimp using varying concentrations of HCl and NaOH. By employing HCl and NaOH at concentrations of 0.6, 1.0 and 1.4 M, this study systematically evaluates the degree of acetylation (DA), molecular weight (Mw), whiteness, purity, crystallinity, and other key parameters of the isolated chitin samples in comparison to commercial chitin (CCN). Results indicate a varied range of N-acetyl group content (77.34 ± 1.13 % to 96.56 ± 1.18 %) and crystallinity values (36.40–44.20 %) across different acid and alkali concentration combinations. This study highlights the effectiveness of deproteinization and demineralization processes in most cases, as confirmed by EDS microanalysis, which demonstrated the complete removal of minerals. Morphological analysis using FE-SEM revealed a smooth, porous and microfibrillar structure in the isolated chitin samples. The study emphasizes the significant influence of the extraction process on chitin properties, with lower concentrations of HCl and NaOH yielding higher CrI and DA. Furthermore, increased concentrations of HCl and NaOH were associated with decreased Mw and increased fat-binding capacity (FBC) and water-binding capacity (WBC) of the isolated chitin samples. This study enhances understanding of how species-specific traits and processing conditions influence chitin characteristics, enabling researchers to predict and select crustacean species for chitin isolation based on desired functional properties.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"10 ","pages":"Article 100233"},"PeriodicalIF":0.0,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619445","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}

{"title":"Synergistic effect of pre-treatment and microwave drying on the physicochemical and functional properties of Chausa mango peel: Process optimization and HPLC analysis to identify mangiferin","authors":"Srutee Rout ,&nbsp;Soubhagya Tripathy ,&nbsp;Shivendu Ranjan ,&nbsp;Prem Prakash Srivastav","doi":"10.1016/j.scenv.2025.100235","DOIUrl":"10.1016/j.scenv.2025.100235","url":null,"abstract":"<div><div>Mango processing generates a lot of waste, including mango peels (MPs). Therefore, in this work, for valorization purposes, the MPs were pretreated with steam blanching and dried with microwave dryer, followed by ultrasound-assisted extraction to recover the bioactive compounds. During drying, the moisture diffusivity and energy consumption were measured. Drying kinetics and mathematical modelling were also used to analyze the drying data. Ultrasound was used to extract the bioactive compounds from the dried MP, and mangiferin was identified and quantified using HPLC. Utilizing steam for blanching purposes increased the moisture diffusivity in the sample and, thus, reduced the energy consumption for microwave dried sample. Drying data were fitted to mathematical modelling, and according to the Akaike Information Criterion, the Page model is the best-suited model with R² 0.995–0.998 and RMSE between 0.013 and 0.032. The maximum bioactive compounds were retained at microwave-dried steam blanched sample at 540 W (MW540SB). Further, HPLC analysis confirmed the presence of mangiferin in the sample, and the blanched microwave-dried sample had the highest amount of mangiferin (2.462 mg/g) in the MP. These findings offer valuable insights for industry professionals focused on food waste valorization. Steam blanching presents an effective method to lower energy consumption while preserving mangiferin in dried MPs. The resulting dried peels can serve as a functional ingredient for fortifying food products, increasing their mangiferin content. This strategy supports sustainable practices while optimizing the nutritional value of mango peel by-products.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"10 ","pages":"Article 100235"},"PeriodicalIF":0.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552469","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}

{"title":"Functionalization of Eri silk and its union fabric using methanolic extract of Centella asiatica plant against Staphylococcus aureus","authors":"Rupjyoti Neog ,&nbsp;Namrita Kola","doi":"10.1016/j.scenv.2025.100234","DOIUrl":"10.1016/j.scenv.2025.100234","url":null,"abstract":"<div><div>The present investigation aimed to evaluate <em>Centella asiatica</em> plant extract as a natural antibacterial finish in response to the growing need for sustainable alternatives in textile applications. Eri/Eri, Eri/Mulberry, and Eri/Cotton fabrics were treated using <em>Centella asiatica</em> extract by pad-dry method. Antibacterial efficacy against gram-positive bacteria <em>Staphylococcus aureus</em> (MTCC 7443) was evaluated using the AATCC 90–2011 method. The assessment encompassed fabric thickness, weight, crease recovery angle, tensile strength, stiffness, elongation, SEM analysis and whiteness index before and after finishing. The washing durability of the finish was determined using ISO 6330E after one and ten washing cycles. The finished fabrics exhibited a significant (<em>p</em> ≤ 0.05) zone of inhibition when compared with positive and negative controls affirming the effectiveness of the developed antibacterial finish. Characterization studies did not indicate drastic alterations in the physical properties after the application of the finishing treatment. Eri/Eri, Eri/Cotton and Eri/Mulberry fabric demonstrated a significant (<em>p</em> ≤ 0.05) laundering durability with recorded values of 11.83 mm, 11.56 mm and 8.67 mm respectively. The eco-friendly strategy offered by the present investigation demonstrated a viable solution for fulfilling the need of antibacterial fabric without sacrificing ecological or health concerns along with reported washing durability.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"10 ","pages":"Article 100234"},"PeriodicalIF":0.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552468","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}

{"title":"Enhancing the oxidative cleavage of vicinal diols on Fe-ZSM-5 catalysts with hierarchical porosity","authors":"Philipp Treu ,&nbsp;Dimitra Iltsiou ,&nbsp;Rabia Elbuga-Ilica ,&nbsp;Carina Maliakkal ,&nbsp;Søren Kegnæs ,&nbsp;Erisa Saraçi","doi":"10.1016/j.scenv.2025.100232","DOIUrl":"10.1016/j.scenv.2025.100232","url":null,"abstract":"<div><div>The oxidative cleavage of biomass-derived vicinal diols holds significant potential for producing valuable renewable carboxylic acids. Fe-ZSM-5 zeolite is a highly effective catalyst for this reaction using mild reaction conditions; however, it suffers from diffusion limitations, particularly with larger substrates. To overcome these challenges, we synthesized hierarchical ZSM-5 zeolite that integrate mesopores within the conventional microporous framework, thereby mitigating diffusion constraints. These hierarchical materials were developed using carbon templating and desilication techniques. Carbon templating led to the creation of well-defined mesopores, while desilication facilitated the formation of hollow crystals. The mesopore-containing hierarchical zeolites led to increased ion-exchange capacity, due to enhanced accessibility of exchange positions for the Fe^3 + cations, with the desilicated zeolite exceeding the Fe-loading by 3.5 times that of the microporous parent ZSM-5 material, as observed by UV–vis spectroscopy, EXAFS analysis and elemental analysis by ICP-OES. Catalytic tests revealed that hierarchical Fe-ZSM-5 catalysts exhibit superior performance compared to their purely microporous counterparts. Specifically, desilication improved catalytic activity for smaller substrates, while carbon templating proved more effective for larger vicinal diols. Furthermore, the carbon templated zeolite displayed enhanced activity per Fe-site, highlighting the benefits of hierarchical porosity in optimizing catalytic performance.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"10 ","pages":"Article 100232"},"PeriodicalIF":0.0,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143592956","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}

{"title":"Eco-friendly biosurfactant solutions for petroleum hydrocarbon cleanup in aquatic ecosystems","authors":"Sumitha Elayaperumal ,&nbsp;Yuvaraj Sivamani ,&nbsp;Debasmita Bhattacharya ,&nbsp;Dibyajit Lahiri ,&nbsp;Moupriya Nag","doi":"10.1016/j.scenv.2025.100207","DOIUrl":"10.1016/j.scenv.2025.100207","url":null,"abstract":"<div><div>Hydrophobic compounds that offer C-H bonds along with heavy metals such as lead, mercury, and cadmium residing in terrestrial and aquatic environments are very much harmfully threatening to the health of an ecosystem. Petroleum-derived hydrocarbons such as fuels (gasoline, diesel etc.), LPG, waxes, etc. are, in fact, one of the most poisonous and carcinogenic contaminants out of all hydrocarbons, caused and acquired through petroleum. They are carcinogenic, neurotoxic and can cause damage to respiratory system, skeletal system along with damaging other organs. These are very stable in the environment and become concentrated and magnified in the tissues of living organisms and, therefore, increased in their ecological effects. Bioremediation has emerged as a viable option; however, it enhances the effectiveness of biosurfactant such as surfactin which is an amphiphilic, bacterially derived surface-active compound that can be utilized in the present work. Such surfactants can increase a pollutant's surface area for contact, create microenvironments, and emulsify media for pollutant removal. There are several recent approaches using biosurfactants in the environment where they improve bioaccessibility of hydrophobics, remove toxic heavy metals, and accelerated the biodegradation process. They are expected to extract any heavy metal from soils by anionic nature and capacity to bind with metal ions. In addition, the best in-situ remediation using biosurfactant-producing microorganisms can also become an efficient and cost-effective method for cleaning crude oil and petrochemical contaminants from water. This article describes how biosurfactants such as surfactin, rhamnolipid etc. can be beneficial to the process of environmental restoration in terms of modelling sustainable approaches of rehabilitating contaminated sites. Biosurfactants can advance remediation technologies through their unique properties and help in creating a cleaner, healthier ecosystem.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100207"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143579850","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}

{"title":"Corrigendum to: “Structural study and molecular docking insights into laccase-mediated dye degradation” [Sustain. Chem. Environ. 8 (2024) 100175]","authors":"Yatindra Kumar ,&nbsp;Hirdya Ramesh ,&nbsp;Kalpana Dhabade ,&nbsp;Manju Shahare ,&nbsp;Bhawna Kalra","doi":"10.1016/j.scenv.2025.100228","DOIUrl":"10.1016/j.scenv.2025.100228","url":null,"abstract":"","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100228"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143579990","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}