Pub Date : 2025-03-01Epub Date: 2024-11-30DOI: 10.1016/j.scenv.2024.100188
Stefano Radice , Domenico Ferrari , Stefano Millefanti , Marco Gregori
Nowadays one of the main challenge in the effective application of a plastic circular economy and overall energy and raw material recovery is the capability of doing selective sorting. The sorting process is the first and important step to obtain homogeneous fluxes of waste materials, which can be utilized as feedstock for raw material recovery, oil based material generation or for energy production. There are many activities for solving the challenges of sorting complex objects in a general waste stream; in this study we used Vibrational Spectroscopy and the most recent NIR technologies to demonstrate the sortability of multilayered samples containing PVDC layers. The NIR results find scientific baseline in the fundamental normal modes observed in IR and Raman spectroscopy and the relative discussion and assignments. The on field success of the sorting tests open the way for advancement in the technologies aimed at achieving a sustainable and economically viable approach to polymer production.
{"title":"PVDC multilayer sorting challenge: A spectroscopy study and on field application","authors":"Stefano Radice , Domenico Ferrari , Stefano Millefanti , Marco Gregori","doi":"10.1016/j.scenv.2024.100188","DOIUrl":"10.1016/j.scenv.2024.100188","url":null,"abstract":"<div><div>Nowadays one of the main challenge in the effective application of a plastic circular economy and overall energy and raw material recovery is the capability of doing selective sorting. The sorting process is the first and important step to obtain homogeneous fluxes of waste materials, which can be utilized as feedstock for raw material recovery, oil based material generation or for energy production. There are many activities for solving the challenges of sorting complex objects in a general waste stream; in this study we used Vibrational Spectroscopy and the most recent NIR technologies to demonstrate the sortability of multilayered samples containing PVDC layers. The NIR results find scientific baseline in the fundamental normal modes observed in IR and Raman spectroscopy and the relative discussion and assignments. The on field success of the sorting tests open the way for advancement in the technologies aimed at achieving a sustainable and economically viable approach to polymer production.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100188"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143178670","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}
Pub Date : 2025-03-01Epub Date: 2025-02-21DOI: 10.1016/j.scenv.2025.100226
Arun Kumar Mehta , Manikanta M. Doki , Gorakhanath Jadhav , Makarand M. Ghangrekar , Brajesh K. Dubey
Rhodobacter sphaeroides can be used as a promising candidate for biotechnological resource recovery because of their metabolic versatility. This investigation has employed varying concentrations of sodium bicarbonate at optimal light intensity and synergy of acetate and propionate to examine their effects on the growth of Rh. sphaeroides, as well as on the contents of polyhydroxyalkanoate, protein, and carbohydrate. Acetate-mediated growth at optimal light intensity produced 0.35 g/L of biomass, with polyhydroxyalkanoate extraction yield, carbohydrate and protein contents of 63.70 ± 3.27 mg PHA/g biomass, 2.78 ± 0.51 % w/w and 12.75 ± 0.87 % w/w, respectively, after 7 days. At optimum dosage of 0.9 g/L of sodium bicarbonate, in conjunction with the optimal light intensity and acetate and propionate synergy, 1.25 g/L of biomass was produced, with polyhydroxyalkanoate extraction yield, carbohydrate, and protein contents of 140.83 ± 12.78 mg PHA/g biomass, 7.11 ± 0.47 % w/w and 39.25 ± 0.60 % w/w, respectively. The biomass yield and protein content decreased at 1.2 g/L of sodium bicarbonate, while the polyhydroxyalkanoate content increased, and the carbohydrate content remained unchanged. The simultaneous use of inorganic carbon (sodium bicarbonate) and organic carbon (acetate and propionate) at the optimal light intensity is an efficient technique for enhancing the biomass yield and the synthesis of metabolites, including polyhydroxyalkanoate, protein, and carbohydrate, paving the path for large-scale cultivation and application in wastewater remediation. These metabolites possess diverse uses, including the production of bioplastics from PHA, animal feed from protein, and biofuels from carbohydrate.
球形红杆菌因其代谢的多样性而成为生物技术资源回收的一个有前途的候选菌。本研究采用不同浓度的碳酸氢钠在最佳光照强度和醋酸盐和丙酸盐的协同作用来研究它们对Rh生长的影响。球藻，以及对聚羟基烷酸盐、蛋白质和碳水化合物的含量。Acetate-mediated增长最优光强度产生0.35 g / L的生物量、与polyhydroxyalkanoate提取率,碳水化合物和蛋白质含量63.70 ±3.27 mg PHA / g生物量、 2.78±0.51 % 12.75 w / w和 ±0.87 % w / w,分别后7天。在最佳剂量的0.9 g / L的碳酸氢钠,结合最优光强度和乙酸和丙酸的协同作用,1.25 g / L的生物质生产,与polyhydroxyalkanoate提取率,碳水化合物,和蛋白质含量140.83 ±12.78 mg PHA / g生物量、 7.11±0.47 % 39.25 w / w和 ±0.60 % w / w,分别。在1.2 g/L碳酸氢钠浓度下，生物量和蛋白质含量下降，聚羟基烷酸含量增加，碳水化合物含量保持不变。在最佳光照强度下同时使用无机碳（碳酸氢钠）和有机碳（醋酸酯和丙酸酯）是一种提高生物质产量和代谢产物（包括聚羟基烷酸酯、蛋白质和碳水化合物）合成的有效技术，为大规模种植和废水修复应用铺平了道路。这些代谢物具有多种用途，包括从PHA中生产生物塑料，从蛋白质中生产动物饲料，以及从碳水化合物中生产生物燃料。
{"title":"Investigating and modelling the effect of sodium bicarbonate on the synergy of acetate and propionate on Rhodobacter sphaeroides growth for wastewater treatment","authors":"Arun Kumar Mehta , Manikanta M. Doki , Gorakhanath Jadhav , Makarand M. Ghangrekar , Brajesh K. Dubey","doi":"10.1016/j.scenv.2025.100226","DOIUrl":"10.1016/j.scenv.2025.100226","url":null,"abstract":"<div><div><em>Rhodobacter sphaeroides</em> can be used as a promising candidate for biotechnological resource recovery because of their metabolic versatility. This investigation has employed varying concentrations of sodium bicarbonate at optimal light intensity and synergy of acetate and propionate to examine their effects on the growth of <em>Rh. sphaeroides</em>, as well as on the contents of polyhydroxyalkanoate, protein, and carbohydrate. Acetate-mediated growth at optimal light intensity produced 0.35 g/L of biomass, with polyhydroxyalkanoate extraction yield, carbohydrate and protein contents of 63.70 ± 3.27 mg PHA/g biomass, 2.78 ± 0.51 % w/w and 12.75 ± 0.87 % w/w, respectively, after 7 days. At optimum dosage of 0.9 g/L of sodium bicarbonate, in conjunction with the optimal light intensity and acetate and propionate synergy, 1.25 g/L of biomass was produced, with polyhydroxyalkanoate extraction yield, carbohydrate, and protein contents of 140.83 ± 12.78 mg PHA/g biomass, 7.11 ± 0.47 % w/w and 39.25 ± 0.60 % w/w, respectively. The biomass yield and protein content decreased at 1.2 g/L of sodium bicarbonate, while the polyhydroxyalkanoate content increased, and the carbohydrate content remained unchanged. The simultaneous use of inorganic carbon (sodium bicarbonate) and organic carbon (acetate and propionate) at the optimal light intensity is an efficient technique for enhancing the biomass yield and the synthesis of metabolites, including polyhydroxyalkanoate, protein, and carbohydrate, paving the path for large-scale cultivation and application in wastewater remediation. These metabolites possess diverse uses, including the production of bioplastics from PHA, animal feed from protein, and biofuels from carbohydrate.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100226"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474223","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}
Pub Date : 2025-03-01Epub Date: 2025-02-03DOI: 10.1016/j.scenv.2025.100212
Victor Idankpo Ameh , Olusola Olaitan Ayeleru , Helen Uchenna Modekwe , Philiswa Nosizo Nomngongo , Ishmael Matala Ramatsa
Biofuels from bioresources are a viable renewable energy source, but high prices, the food versus fuel debate, and biodiversity loss limit the demands for bioenergy. Sourcing alternative bioresources from waste with a higher yield and energy value to produce bioenergy, as well as optimizing biofuel refining processes, are crucial for reducing production costs and increasing output to mitigate high prices and feedstock availability. The extracted bio-oil of non-edible seeds of Gmelina arborea is being investigated for transesterification into biofuels, a process that does not entirely maximize the bioenergy generated from the bioresources and generates further waste. However, pyrolysis can convert wholly the lignocellulose seed components into bioproducts with high-quality fuel properties without associated glycerol. Consequently, in this study, pyrolytic oil was produced from waste Gmelina arborea seed, the process parameters were optimized using the surface response methodology with experimental validations, the process model was established, and the pyrolytic oil was characterized. The optimum yield of 54 % at a temperature of 485 °C, a heating rate of 40 °C/min, and a particle size of 0.9 mm were established, and a corresponding regression model equation was developed. The Gmelina arborea seed biomass was revealed to have 81.95 % volatile matter with oil extractives of 44.80 %. The GC-MS analysis shows that the aliphatic hydrocarbon of a cyclic monoterpene occupies the highest concentration of 67.46 %. The fuel properties and the calorific value of 33.69 MJ/kg of the pyrolytic oil compared to ASTM standard specifications for pyrolytic liquid biofuel show suitability for commercial and industrial fuel. The absence of sulfur in the pyrolytic oil elemental analysis adds credence to its usefulness as a sustainable fuel.
{"title":"Optimized process and modeling of waste Gmelina arborea seed pyrolytic oil production and its characterization as a sustainable biofuel","authors":"Victor Idankpo Ameh , Olusola Olaitan Ayeleru , Helen Uchenna Modekwe , Philiswa Nosizo Nomngongo , Ishmael Matala Ramatsa","doi":"10.1016/j.scenv.2025.100212","DOIUrl":"10.1016/j.scenv.2025.100212","url":null,"abstract":"<div><div>Biofuels from bioresources are a viable renewable energy source, but high prices, the food versus fuel debate, and biodiversity loss limit the demands for bioenergy. Sourcing alternative bioresources from waste with a higher yield and energy value to produce bioenergy, as well as optimizing biofuel refining processes, are crucial for reducing production costs and increasing output to mitigate high prices and feedstock availability. The extracted bio-oil of non-edible seeds of Gmelina arborea is being investigated for transesterification into biofuels, a process that does not entirely maximize the bioenergy generated from the bioresources and generates further waste. However, pyrolysis can convert wholly the lignocellulose seed components into bioproducts with high-quality fuel properties without associated glycerol. Consequently, in this study, pyrolytic oil was produced from waste Gmelina arborea seed, the process parameters were optimized using the surface response methodology with experimental validations, the process model was established, and the pyrolytic oil was characterized. The optimum yield of 54 % at a temperature of 485 °C, a heating rate of 40 °C/min, and a particle size of 0.9 mm were established, and a corresponding regression model equation was developed. The Gmelina arborea seed biomass was revealed to have 81.95 % volatile matter with oil extractives of 44.80 %. The GC-MS analysis shows that the aliphatic hydrocarbon of a cyclic monoterpene occupies the highest concentration of 67.46 %. The fuel properties and the calorific value of 33.69 MJ/kg of the pyrolytic oil compared to ASTM standard specifications for pyrolytic liquid biofuel show suitability for commercial and industrial fuel. The absence of sulfur in the pyrolytic oil elemental analysis adds credence to its usefulness as a sustainable fuel.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100212"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143211041","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}
Pub Date : 2025-03-01Epub Date: 2024-12-21DOI: 10.1016/j.scenv.2024.100194
Zoi Terzopoulou , Christina Pappa , Konstantinos Triantafyllidis , Dimitrios N. Bikiaris
The shift towards a sustainable plastics economy is driving interest in agricultural waste and byproducts for plastic composites, offering benefits like enhanced sustainability, reduced costs, and improved mechanical properties. Lignin, one of the three main components of lignocellulosic biomass, is a promising filler for polymer composites due to its abundance, reactivity, and functional properties, despite challenges in extraction and processing. This review examines the impact of lignin particle size reduction, from microparticles (LMPs) to nanoparticles (LNPs), on the properties of polymer composites, focusing on poly(lactic acid) (PLA) and other polyesters. Reducing lignin particle size can enhance stress transfer and particle wetting in the matrix, although optimal size thresholds and filler contents for desired properties remain uncertain. The paper discusses lignin's characteristics based on source and size reduction method, its functionalization for better dispersion, and various preparation methods of lignin-containing composites. Applications in packaging and are agriculture are highlighted, with an emphasis on achieving a balance between improved properties, cost efficiency, and environmental impact. Finally, it highlights the need for standardized reporting on lignin’s origin, isolation method, molecular weight, Tg, and particle size to enable effective comparisons and advancements in lignin-based polymer composites.
{"title":"Unravelling the impact of lignin particle size and content on enhanced value in plastic composites","authors":"Zoi Terzopoulou , Christina Pappa , Konstantinos Triantafyllidis , Dimitrios N. Bikiaris","doi":"10.1016/j.scenv.2024.100194","DOIUrl":"10.1016/j.scenv.2024.100194","url":null,"abstract":"<div><div>The shift towards a sustainable plastics economy is driving interest in agricultural waste and byproducts for plastic composites, offering benefits like enhanced sustainability, reduced costs, and improved mechanical properties. Lignin, one of the three main components of lignocellulosic biomass, is a promising filler for polymer composites due to its abundance, reactivity, and functional properties, despite challenges in extraction and processing. This review examines the impact of lignin particle size reduction, from microparticles (LMPs) to nanoparticles (LNPs), on the properties of polymer composites, focusing on poly(lactic acid) (PLA) and other polyesters. Reducing lignin particle size can enhance stress transfer and particle wetting in the matrix, although optimal size thresholds and filler contents for desired properties remain uncertain. The paper discusses lignin's characteristics based on source and size reduction method, its functionalization for better dispersion, and various preparation methods of lignin-containing composites. Applications in packaging and are agriculture are highlighted, with an emphasis on achieving a balance between improved properties, cost efficiency, and environmental impact. Finally, it highlights the need for standardized reporting on lignin’s origin, isolation method, molecular weight, T<sub>g</sub>, and particle size to enable effective comparisons and advancements in lignin-based polymer composites.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100194"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177728","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}
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.
{"title":"Eco-friendly biosurfactant solutions for petroleum hydrocarbon cleanup in aquatic ecosystems","authors":"Sumitha Elayaperumal , Yuvaraj Sivamani , Debasmita Bhattacharya , Dibyajit Lahiri , 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}
Hexavalent Chromium and trivalent Arsenic are among the most common hazardous elements found in wastewater, posing life-threatening risks due to their abundance. Despite efforts to mitigate their presence, the effectiveness of numerous micro adsorbents in lowering the levels of Cr (VI) and As (III) in wastewater remains inadequate. In this study, biochar derived from Syzygium cumini seed (SCB) and its nanocomposite with lanthanum ferrite (SCB/NC) were investigated for their potential in removing Cr (VI) and As (III) from water. The properties of the nanocomposite including its nature, surface composition and functionality were analysed using various techniques such as FTIR, XRD, FESEM, BET, EDX, TGA and XPS. Batch experiments were conducted to evaluate the adsorption kinetics, equilibrium isotherms, and thermodynamic characteristics of Cr (VI) and As (III) removal. The study examined various parameters including adsorbent dosage, initial metal ions concentration, pH, temperature and agitation time. Results revealed that SCB/NC exhibited significant potential for adsorbing Cr (VI) and As (III), with approximately 98.58 % of Cr (VI) and 94.16 % of As (III) being adsorbed within the pH range of 2.0–6.0 at 65 °C. Furthermore, adsorption capacity of adsorbent remained unaffected up to five cycles of reuse, indicating its potential for practical applications. The adsorption of micro-pollutants from water system was confirmed through FTIR and EDX analysis, providing further insights into the removal mechanism. This research underscores the promising role of SCB/NC in addressing the challenge of heavy metal contamination in water bodies and its potential for environmental remediation.
{"title":"Biochar derived from Syzygium cumini seed embedded nanohybrid structure for eco-friendly remediation of Cr (VI) and As (III) ions: Adsorption and modeling analysis","authors":"Anita Kumari , Ajay Kumar , Deepak Pathania , Manita Thakur , Arush Sharma","doi":"10.1016/j.scenv.2024.100189","DOIUrl":"10.1016/j.scenv.2024.100189","url":null,"abstract":"<div><div>Hexavalent Chromium and trivalent Arsenic are among the most common hazardous elements found in wastewater, posing life-threatening risks due to their abundance. Despite efforts to mitigate their presence, the effectiveness of numerous micro adsorbents in lowering the levels of Cr (VI) and As (III) in wastewater remains inadequate. In this study, biochar derived from <em>Syzygium cumini</em> seed (SCB) and its nanocomposite with lanthanum ferrite (SCB/NC) were investigated for their potential in removing Cr (VI) and As (III) from water. The properties of the nanocomposite including its nature, surface composition and functionality were analysed using various techniques such as FTIR, XRD, FESEM, BET, EDX, TGA and XPS. Batch experiments were conducted to evaluate the adsorption kinetics, equilibrium isotherms, and thermodynamic characteristics of Cr (VI) and As (III) removal. The study examined various parameters including adsorbent dosage, initial metal ions concentration, pH, temperature and agitation time. Results revealed that SCB/NC exhibited significant potential for adsorbing Cr (VI) and As (III), with approximately 98.58 % of Cr (VI) and 94.16 % of As (III) being adsorbed within the pH range of 2.0–6.0 at 65 °C. Furthermore, adsorption capacity of adsorbent remained unaffected up to five cycles of reuse, indicating its potential for practical applications. The adsorption of micro-pollutants from water system was confirmed through FTIR and EDX analysis, providing further insights into the removal mechanism. This research underscores the promising role of SCB/NC in addressing the challenge of heavy metal contamination in water bodies and its potential for environmental remediation.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100189"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143178671","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}
Pub Date : 2025-03-01Epub Date: 2024-12-24DOI: 10.1016/j.scenv.2024.100198
Satyabrata Nanda , Satabdi Tripathy , Pratyush Kumar Das
Hexavalent Chromium is mostly formed from various mining and industrial activities and has severe toxic implications for biotic components. It also hampers soil nutrient profile, thus hindering plant productivity. Bioaccumulation of Cr (VI) in plant tissues reduces plant growth and vigor and poses the risk of transferring the toxic metal to humans through the food chain. It is highly essential to reduce Cr (VI) concentrations in the soil and reduce its transfer into plant tissues. Plant growth-promoting rhizobacterial species are an efficient tool to cater to the problem. The current article discusses the role of such beneficial microbes in the sustainable remediation of Cr (VI) contaminated soil while alleviating stress and promoting growth. Various studies have claimed the expert role of these microbes in Cr (VI) remediation. However, little progress has been made concerning their feasible application in Cr (VI) contaminated soils. One of the major gaps is the lack of understanding of the remediation potential of these PGPRs at a molecular level. Recent strategies, like the synergistic application of PGPRs and microbial immobilization, have been highlighted as feasible methods for the successful remediation of Cr (VI) contaminated soils. The adoption of multi-omics techniques has been proposed for better identification of PGPRs.
{"title":"Delineating the role of rhizospheric microbes in the amelioration of hexavalent chromium stress in plants","authors":"Satyabrata Nanda , Satabdi Tripathy , Pratyush Kumar Das","doi":"10.1016/j.scenv.2024.100198","DOIUrl":"10.1016/j.scenv.2024.100198","url":null,"abstract":"<div><div>Hexavalent Chromium is mostly formed from various mining and industrial activities and has severe toxic implications for biotic components. It also hampers soil nutrient profile, thus hindering plant productivity. Bioaccumulation of Cr (VI) in plant tissues reduces plant growth and vigor and poses the risk of transferring the toxic metal to humans through the food chain. It is highly essential to reduce Cr (VI) concentrations in the soil and reduce its transfer into plant tissues. Plant growth-promoting rhizobacterial species are an efficient tool to cater to the problem. The current article discusses the role of such beneficial microbes in the sustainable remediation of Cr (VI) contaminated soil while alleviating stress and promoting growth. Various studies have claimed the expert role of these microbes in Cr (VI) remediation. However, little progress has been made concerning their feasible application in Cr (VI) contaminated soils. One of the major gaps is the lack of understanding of the remediation potential of these PGPRs at a molecular level. Recent strategies, like the synergistic application of PGPRs and microbial immobilization, have been highlighted as feasible methods for the successful remediation of Cr (VI) contaminated soils. The adoption of multi-omics techniques has been proposed for better identification of PGPRs.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100198"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177735","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}
Pub Date : 2025-03-01Epub Date: 2025-02-10DOI: 10.1016/j.scenv.2025.100217
Muhammad Zeeshan , Tariq Javed , Chandresh Kumari , Anusha Thumma , Muhammad Wasim , Muhammad Babar Taj , Ishu Sharma , Muhammad Nouman Haider , Maryam Batool
The subject of pollution resulting from dyes has emerged as a significant global issue. Dyes adsorption analysis has gained more significance in the last several years. The process of adsorption are among the most financially viable and effective approaches for reducing dye concentrations in water systems. These hazardous and carcinogenic dyes find their way into water sources through the discharge from numerous sectors like textiles, paints, cosmetics, paper etc. This investigation has delivered an extensive overview of numerous dyes, detailing their adverse effects on human health as well as aquatic organisms. The comprehensive analysis presented in this review encompasses dyes' adsorption on a variety of surfaces, including porous polymers, carbon and clay based materials, layered double hydroxides (LDH), bio-sorbents and metal-organic frameworks (MOF). Comprehensive analysis has been conducted on the structures of these materials as well as the essential functional groups that drive dye adsorption. Additionally, various factors influencing the rate of adsorption are underscored. A brief discussion on the economic aspect is also included. Various mechanisms for dyes removal and theoretical calculations are also discussed. Readers stand to benefit significantly from this review as it offers a thorough exploration of all facets of dye adsorption. Furthermore, the review essay has touched upon the constraints and potential opportunities in this field.
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Pub Date : 2025-03-01Epub Date: 2024-12-21DOI: 10.1016/j.scenv.2024.100195
Liliana Mammino
Green chemistry education has been the object of intensive attention, research and explorations in the last decades; environmental chemistry education has received alternating attention. Both green chemistry and environmental chemistry are concerned with the environment. Green chemistry focuses on pollution prevention at the source, to be pursued through changes in the production and handling of substances, as well as the nature of substances themselves, by envisaging the replacement of non-benign substances by more benign ones. Environmental chemistry focuses on the effects of pollutants, thus providing indications on the substances that require more urgent replacement and more effective measures to prevent them from entering the environment. At education level, it is important to acquaint students with the domain of these two areas, their possible synergies and the expected ensuing benefits. The present work outlines collaboration and convergence pathways, considering the green chemistry principles and also the complexity of the implementation features of pollution prevention. It is concluded that an educational approach bridging the two perspectives is crucial to make future chemists, as well as other professionals, more ready for the multidisciplinary requirements of sustainability discourses and their operational components.
{"title":"Cross-bridging green chemistry education and environmental chemistry education","authors":"Liliana Mammino","doi":"10.1016/j.scenv.2024.100195","DOIUrl":"10.1016/j.scenv.2024.100195","url":null,"abstract":"<div><div>Green chemistry education has been the object of intensive attention, research and explorations in the last decades; environmental chemistry education has received alternating attention. Both green chemistry and environmental chemistry are concerned with the environment. Green chemistry focuses on pollution prevention at the source, to be pursued through changes in the production and handling of substances, as well as the nature of substances themselves, by envisaging the replacement of non-benign substances by more benign ones. Environmental chemistry focuses on the effects of pollutants, thus providing indications on the substances that require more urgent replacement and more effective measures to prevent them from entering the environment. At education level, it is important to acquaint students with the domain of these two areas, their possible synergies and the expected ensuing benefits. The present work outlines collaboration and convergence pathways, considering the green chemistry principles and also the complexity of the implementation features of pollution prevention. It is concluded that an educational approach bridging the two perspectives is crucial to make future chemists, as well as other professionals, more ready for the multidisciplinary requirements of sustainability discourses and their operational components.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100195"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177734","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}
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