Sustainable Chemistry for the Environment最新文献

英文中文

Investigating and modelling the effect of sodium bicarbonate on the synergy of acetate and propionate on Rhodobacter sphaeroides growth for wastewater treatment

Sustainable Chemistry for the Environment

Pub Date : 2025-02-21 DOI: 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.

{"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":"2025-02-21","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}

引用次数: 0

Assessing the antifungal efficacy of organic fungicides combined with inorganic salts for wood protection

Sustainable Chemistry for the Environment

Pub Date : 2025-02-21 DOI: 10.1016/j.scenv.2025.100229

Jyoti Papola , Anil Kumar Sethy , R. Sundararaj , Rakesh Kumar

Wood is a very useful construction material that has been used for many years in several applications. The organic composition of wood makes it vulnerable to several bio-deteriorating agents. To prolong its lifespan, wood needs to be treated with wood preservatives. Environmental concerns regarding first and second-generation wood preservatives have led to a shift toward using carbon-based third-generation preservatives, particularly triazoles. Preservative formulations with minimal adverse on the environment and human health have gained increasing focus. This study examines the antifungal properties of an organic fungicide used in combination with inorganic salts as a wood preservative, employing a petri plate bioassay. Additionally, antifungal efficacy was assessed in impregnated mango wood blocks. The results indicated a gradual decline in weight loss percentages of 2.37 % and 3.39 % against both brown rot and white rot fungi. These results imply that using a combination of inorganic salts with organic fungicides can serve as an effective way to preserve wood sustainably. Both Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) were used to analyze alterations in microstructure and chemical structure, respectively. The incorporation of organic fungicides with inorganic salts enhances resistance to fungi; furthermore, FTIR analysis and SEM micrographs of deteriorated wood demonstrated that treated specimens showed less degradation compared to controls.

{"title":"Assessing the antifungal efficacy of organic fungicides combined with inorganic salts for wood protection","authors":"Jyoti Papola , Anil Kumar Sethy , R. Sundararaj , Rakesh Kumar","doi":"10.1016/j.scenv.2025.100229","DOIUrl":"10.1016/j.scenv.2025.100229","url":null,"abstract":"<div><div>Wood is a very useful construction material that has been used for many years in several applications. The organic composition of wood makes it vulnerable to several bio-deteriorating agents. To prolong its lifespan, wood needs to be treated with wood preservatives. Environmental concerns regarding first and second-generation wood preservatives have led to a shift toward using carbon-based third-generation preservatives, particularly triazoles. Preservative formulations with minimal adverse on the environment and human health have gained increasing focus. This study examines the antifungal properties of an organic fungicide used in combination with inorganic salts as a wood preservative, employing a petri plate bioassay. Additionally, antifungal efficacy was assessed in impregnated mango wood blocks. The results indicated a gradual decline in weight loss percentages of 2.37 % and 3.39 % against both brown rot and white rot fungi. These results imply that using a combination of inorganic salts with organic fungicides can serve as an effective way to preserve wood sustainably. Both Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) were used to analyze alterations in microstructure and chemical structure, respectively. The incorporation of organic fungicides with inorganic salts enhances resistance to fungi; furthermore, FTIR analysis and SEM micrographs of deteriorated wood demonstrated that treated specimens showed less degradation compared to controls.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100229"},"PeriodicalIF":0.0,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microbial electrolysis cells: Fuelling the future with biohydrogen – A review

Sustainable Chemistry for the Environment

Pub Date : 2025-02-19 DOI: 10.1016/j.scenv.2025.100224

Divyanshu Sikarwar , Indrasis Das , Anusha Ganta , Indumathi M. Nambi , Benjamin Erable , Sovik Das

Biohydrogen is a prodigious energy carrier, which emerged as one of the most practical solutions to combat global warming and climate change. In this regard, the emerging microbial electrolysis cell (MEC) technology could be utilized for green hydrogen production from a wide array of organic wastes. However, scaling-up of MECs is a significant barrier due to its architectural difficulties and increased internal resistance, resulting in the higher energy requirement and cost of the MEC at pragmatic scale. Thus, the present review elucidates the mechanism, different configurations and substrates, and scaling-up potential for biohydrogen production via MEC. Moreover, the techno-economic and environmental impact of biohydrogen production through MEC from different substrates is also presented. Furthermore, microbial dynamics that govern hydrogen production rate and commercialization potential are also reviewed critically, which makes this review article the first of its kind to the best of our knowledge.

引用次数: 0

Towards sustainable corrosion inhibition: A combined experimental and computational study of ethyl triphenyl phosphonium iodide on aluminium in acidic medium

Sustainable Chemistry for the Environment

Pub Date : 2025-02-19 DOI: 10.1016/j.scenv.2025.100221

Mansi Y. Chaudhary , Shramila Yadav , Prerna Bansal , Yudhvir S. Sharma , Manish Gautam , Charu Chandra , Amarpreet K. Kalra , Meenakshi Gupta

The quest for innovative and effective corrosion inhibitors, alongside advanced methodologies for corrosion monitoring and quantification, remains pivotal across diverse industrial domains. This study explores the potential of ethyl triphenyl phosphonium iodide (ETPI) as a high-performance corrosion inhibitor for aluminium in a 0.5 M hydrochloric acid medium. Employing three complementary experimental techniques—weight loss analysis, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS)—the research demonstrates consistent and reliable results across varying temperatures and ETPI concentrations. A notable decline in inhibition efficiency was observed at reduced ETPI concentrations and elevated temperatures, underscoring the dynamic interplay between environmental factors and inhibitor performance. Crucially, the adsorption behavior of ETPI aligns with the Flory-Huggins adsorption isotherm, with thermodynamic parameters (∆G⁰_ads, ∆H⁰_ads, ∆S⁰_ads, and K_ads) and kinetic activation energy (E_a) providing deeper insights into the adsorption mechanisms. Additionally, quantum chemical simulations reveal the molecular attributes of ETPI responsible for robust chemisorption interactions with the aluminium surface. These findings are further validated by scanning electron microscopy (SEM) images and energy-dispersive X-ray (EDX) spectroscopy, which confirm the inhibitor's efficacy and surface-protective properties.

The study not only reinforces ETPI’s viability as an effective corrosion inhibitor but also provides a comprehensive framework combining experimental, thermodynamic, and theoretical approaches, paving the way for the development of next-generation corrosion mitigation strategies.

{"title":"Towards sustainable corrosion inhibition: A combined experimental and computational study of ethyl triphenyl phosphonium iodide on aluminium in acidic medium","authors":"Mansi Y. Chaudhary , Shramila Yadav , Prerna Bansal , Yudhvir S. Sharma , Manish Gautam , Charu Chandra , Amarpreet K. Kalra , Meenakshi Gupta","doi":"10.1016/j.scenv.2025.100221","DOIUrl":"10.1016/j.scenv.2025.100221","url":null,"abstract":"<div><div>The quest for innovative and effective corrosion inhibitors, alongside advanced methodologies for corrosion monitoring and quantification, remains pivotal across diverse industrial domains. This study explores the potential of ethyl triphenyl phosphonium iodide (ETPI) as a high-performance corrosion inhibitor for aluminium in a 0.5 M hydrochloric acid medium. Employing three complementary experimental techniques—weight loss analysis, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS)—the research demonstrates consistent and reliable results across varying temperatures and ETPI concentrations. A notable decline in inhibition efficiency was observed at reduced ETPI concentrations and elevated temperatures, underscoring the dynamic interplay between environmental factors and inhibitor performance. Crucially, the adsorption behavior of ETPI aligns with the Flory-Huggins adsorption isotherm, with thermodynamic parameters (∆G<sup>0</sup><sub>ads</sub>, ∆H<sup>0</sup><sub>ads</sub>, ∆S<sup>0</sup><sub>ads</sub>, and K<sub>ads</sub>) and kinetic activation energy (E<sub>a</sub>) providing deeper insights into the adsorption mechanisms. Additionally, quantum chemical simulations reveal the molecular attributes of ETPI responsible for robust chemisorption interactions with the aluminium surface. These findings are further validated by scanning electron microscopy (SEM) images and energy-dispersive X-ray (EDX) spectroscopy, which confirm the inhibitor's efficacy and surface-protective properties.</div><div>The study not only reinforces ETPI’s viability as an effective corrosion inhibitor but also provides a comprehensive framework combining experimental, thermodynamic, and theoretical approaches, paving the way for the development of next-generation corrosion mitigation strategies.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100221"},"PeriodicalIF":0.0,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143454044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Production of laccase by Bacillus subtilis and Aspergillus niger for treatment of textile effluent

Sustainable Chemistry for the Environment

Pub Date : 2025-02-18 DOI: 10.1016/j.scenv.2025.100222

Olabisi Peter Abioye , Suleiman Umaru , Sesan Abiodun Aransiola , Oluwafemi Adebayo Oyewole , Naga Raju Maddela , Ram Prasad

The improper disposal of textile effluents without effective treatment has adverse environmental, social, economic, and health impacts and as such, it is vital to find innovative technological solutions to reduce the negative consequences of textile effluents. Laccases are versatile multicopper enzymes found in plants, fungi and other microorganisms with wide applications especially in the textile and paper industry. This study examined the production of laccase from Bacillus subtilis and Aspergillus niger to remediate textile effluent. Both organisms were identified by molecular method and plate test method was used to evaluate laccase production by the two organisms. Rice bran emerged as the substrate of choice for laccase production. At optimum temperature (30°C), the highest laccase produced was 0.522 U/mL and 0.642 U/mL at 35°C for B. subtilis and A. niger respectively. The optimum pH level of 5 and 6 produced the highest laccase yield of 0.583 U/mL and 0.684 U/mL respectively. Significant improvements of laccases from B. subtilis and A. niger were observed on physicochemical analysis of TDS, pH, electrical conductivity, TSS, temperature and DO in treating textile effluent. Notably, these enzymes exhibited remarkable efficacy reduction in BOD (38 %), COD (14 %), and nitrate (23 %) levels in the effluent. The study underscores the efficacy of laccases from the microorganisms in treating textile effluent, with concentrations ranging from 10 to 30 U/mL proving effective. However, laccase produced from B. subtilis showed more remediation potential in textile effluent treatment compared to the one produced by A. niger.

{"title":"Production of laccase by Bacillus subtilis and Aspergillus niger for treatment of textile effluent","authors":"Olabisi Peter Abioye , Suleiman Umaru , Sesan Abiodun Aransiola , Oluwafemi Adebayo Oyewole , Naga Raju Maddela , Ram Prasad","doi":"10.1016/j.scenv.2025.100222","DOIUrl":"10.1016/j.scenv.2025.100222","url":null,"abstract":"<div><div>The improper disposal of textile effluents without effective treatment has adverse environmental, social, economic, and health impacts and as such, it is vital to find innovative technological solutions to reduce the negative consequences of textile effluents. Laccases are versatile multicopper enzymes found in plants, fungi and other microorganisms with wide applications especially in the textile and paper industry. This study examined the production of laccase from <em>Bacillus subtilis</em> and <em>Aspergillus niger</em> to remediate textile effluent. Both organisms were identified by molecular method and plate test method was used to evaluate laccase production by the two organisms. Rice bran emerged as the substrate of choice for laccase production. At optimum temperature (30°C), the highest laccase produced was 0.522 U/mL and 0.642 U/mL at 35°C for <em>B. subtilis</em> and <em>A. niger</em> respectively. The optimum pH level of 5 and 6 produced the highest laccase yield of 0.583 U/mL and 0.684 U/mL respectively. Significant improvements of laccases from <em>B. subtilis</em> and <em>A. niger</em> were observed on physicochemical analysis of TDS, pH, electrical conductivity, TSS, temperature and DO in treating textile effluent. Notably, these enzymes exhibited remarkable efficacy reduction in BOD (38 %), COD (14 %), and nitrate (23 %) levels in the effluent. The study underscores the efficacy of laccases from the microorganisms in treating textile effluent, with concentrations ranging from 10 to 30 U/mL proving effective. However, laccase produced from <em>B. subtilis</em> showed more remediation potential in textile effluent treatment compared to the one produced by <em>A. niger</em>.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100222"},"PeriodicalIF":0.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultrasound-assisted extraction and characterization of Brazil nut oil (Bertholletia excelsa)

Sustainable Chemistry for the Environment

Pub Date : 2025-02-18 DOI: 10.1016/j.scenv.2025.100218

Susan Hidaka de Oliveira , Charline Soares dos Santos Rolim , Thalita Caroline Lima Alves , Carolina Lima dos Santos , Kevyn Melo Lotas , Ivonea Soares do Nascimento , Leonardo do Nascimento Rolim , Anderson Mathias Pereira , Renata Cristina Ferreira Bonomo

The Brazil nut is a highly valuable species in the Amazon, both for its economic value and for its nutritional profile. To preserve the nutritional quality of the oil extracted from these nuts, it is important to use appropriate extraction techniques. Among the options available is ultrasound-assisted extraction, which improves solvent penetration and facilitates mass transfer in ruptured cells, making it an efficient approach that preserves the quality of the final product. The aim of this study was to evaluate the changes in the physicochemical and thermal characteristics of Brazil nut oil after ultrasound treatment. Quality parameters were considered, such as acidity and saponification indices, as well as thermal-oxidative properties such as density, viscosity and thermogravimetry. The results indicated that this technique did not significantly alter the properties of the oil and, according to the thermophysical analyses, the Brazil nut oil obtained by ultrasound-assisted extraction showed characteristics similar to other vegetable oils, such as a density of 887 kg.m-3 at 20 oC and a viscosity of 32.5 mPa.s at 25 oC. The proposed method proved to be a practical, fast and economical alternative for extracting Brazil nut oil, maintaining its quality and guaranteeing consumer safety. These characteristics are essential for its application in food products such as chocolates, ice cream and bakery items, as well as its potential use in the cosmetics industry.

{"title":"Ultrasound-assisted extraction and characterization of Brazil nut oil (Bertholletia excelsa)","authors":"Susan Hidaka de Oliveira , Charline Soares dos Santos Rolim , Thalita Caroline Lima Alves , Carolina Lima dos Santos , Kevyn Melo Lotas , Ivonea Soares do Nascimento , Leonardo do Nascimento Rolim , Anderson Mathias Pereira , Renata Cristina Ferreira Bonomo","doi":"10.1016/j.scenv.2025.100218","DOIUrl":"10.1016/j.scenv.2025.100218","url":null,"abstract":"<div><div>The Brazil nut is a highly valuable species in the Amazon, both for its economic value and for its nutritional profile. To preserve the nutritional quality of the oil extracted from these nuts, it is important to use appropriate extraction techniques. Among the options available is ultrasound-assisted extraction, which improves solvent penetration and facilitates mass transfer in ruptured cells, making it an efficient approach that preserves the quality of the final product. The aim of this study was to evaluate the changes in the physicochemical and thermal characteristics of Brazil nut oil after ultrasound treatment. Quality parameters were considered, such as acidity and saponification indices, as well as thermal-oxidative properties such as density, viscosity and thermogravimetry. The results indicated that this technique did not significantly alter the properties of the oil and, according to the thermophysical analyses, the Brazil nut oil obtained by ultrasound-assisted extraction showed characteristics similar to other vegetable oils, such as a density of 887 kg.m-3 at 20 oC and a viscosity of 32.5 mPa.s at 25 oC. The proposed method proved to be a practical, fast and economical alternative for extracting Brazil nut oil, maintaining its quality and guaranteeing consumer safety. These characteristics are essential for its application in food products such as chocolates, ice cream and bakery items, as well as its potential use in the cosmetics industry.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100218"},"PeriodicalIF":0.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143454045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Utilization of chitosan as a natural coagulant for polyethylene microplastic removal 利用壳聚糖作为天然凝结剂去除聚乙烯微塑料

Sustainable Chemistry for the Environment

Pub Date : 2025-02-17 DOI: 10.1016/j.scenv.2025.100225

Susiana Prasetyo, Christopher A. Santos, Asaf K. Sugih, Hans Kristianto

The widespread use of plastic has led to environmental pollution and health issues due to its persistence and the formation of microplastics—particles smaller than 5 mm that arise from the breakdown of larger plastics. These microplastics pose significant environmental threats, especially in aquatic ecosystems, where they act as carriers for pollutants. Various treatment methods, including coagulation, have been explored to mitigate microplastic pollution. Among coagulants, chitosan—a natural polysaccharide derived from chitin—has shown promise due to its effectiveness and environmental compatibility. This study investigates the use of chitosan to remove polyethylene microplastics in synthetic wastewater, focusing on the effects of pH and coagulant dose. The results indicate that the highest coagulation efficiency, achieving an 81.5 % removal, occurs at a pH of 6.0 with a chitosan dose of 100 mg/L via charge neutralization as the primary coagulation mechanism. These findings emphasize chitosan's potential as an environmentally friendly approach to mitigating microplastic pollution in water treatment.

{"title":"Utilization of chitosan as a natural coagulant for polyethylene microplastic removal","authors":"Susiana Prasetyo, Christopher A. Santos, Asaf K. Sugih, Hans Kristianto","doi":"10.1016/j.scenv.2025.100225","DOIUrl":"10.1016/j.scenv.2025.100225","url":null,"abstract":"<div><div>The widespread use of plastic has led to environmental pollution and health issues due to its persistence and the formation of microplastics—particles smaller than 5 mm that arise from the breakdown of larger plastics. These microplastics pose significant environmental threats, especially in aquatic ecosystems, where they act as carriers for pollutants. Various treatment methods, including coagulation, have been explored to mitigate microplastic pollution. Among coagulants, chitosan—a natural polysaccharide derived from chitin—has shown promise due to its effectiveness and environmental compatibility. This study investigates the use of chitosan to remove polyethylene microplastics in synthetic wastewater, focusing on the effects of pH and coagulant dose. The results indicate that the highest coagulation efficiency, achieving an 81.5 % removal, occurs at a pH of 6.0 with a chitosan dose of 100 mg/L via charge neutralization as the primary coagulation mechanism. These findings emphasize chitosan's potential as an environmentally friendly approach to mitigating microplastic pollution in water treatment.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100225"},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143429764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microbial pathways for biohydrogen production: Advances, challenges, and future prospects

Sustainable Chemistry for the Environment

Pub Date : 2025-02-16 DOI: 10.1016/j.scenv.2025.100219

Soghra Nashath Omer , Panchamoorthy Saravanan , R. Rajeshkannan , Pramilaa Kumar , Madhavi Reddy , M. Rajasimman , S. Venkat kumar

Rising oil costs, growing environmental concerns, and the pressing need for sustainable fossil fuel substitutes have all caused the globe to move firmly toward hydrogen as a possible future energy carrier. Microbial fermentation is a revolutionary method for producing hydrogen that not only uses readily accessible waste materials and neglected bioresources, such as forestry and agricultural wastes, but also blends in well with waste management and a circular bioeconomy. In this review, the metabolic characteristics of microorganisms that produce hydrogen are examined, along with the variables that affect production rates and yields, such as substrate specialization, enzymatic efficiency, and ambient circumstances. Important routes including photo fermentation, dark fermentation, and bio photolysis are discussed, along with their benefits, drawbacks, and potential for integration to increase overall efficiency. Critical bioprocess parameters, novel reactor topologies, and biomass pre-treatment methods are examined, with a focus on how they might improve hydrogen production and lessen process bottlenecks. Additionally, the potential of cutting-edge technologies like synthetic biology-driven microbial engineering and microbial electrolysis cells to transform hydrogen generation is assessed.Despite tremendous progress, problems including poor yields, scalability problems, high capital costs, and substrate competition still exist, calling for a multidisciplinary strategy that blends engineering tactics with biological breakthroughs.The necessity of coordinated efforts to improve microbial hydrogen production systems is ultimately highlighted by this analysis. This will help renewable hydrogen become a practical, scalable, and sustainable energy substitute for fossil fuels, promoting a cleaner and more resilient energy future.

{"title":"Microbial pathways for biohydrogen production: Advances, challenges, and future prospects","authors":"Soghra Nashath Omer , Panchamoorthy Saravanan , R. Rajeshkannan , Pramilaa Kumar , Madhavi Reddy , M. Rajasimman , S. Venkat kumar","doi":"10.1016/j.scenv.2025.100219","DOIUrl":"10.1016/j.scenv.2025.100219","url":null,"abstract":"<div><div>Rising oil costs, growing environmental concerns, and the pressing need for sustainable fossil fuel substitutes have all caused the globe to move firmly toward hydrogen as a possible future energy carrier. Microbial fermentation is a revolutionary method for producing hydrogen that not only uses readily accessible waste materials and neglected bioresources, such as forestry and agricultural wastes, but also blends in well with waste management and a circular bioeconomy. In this review, the metabolic characteristics of microorganisms that produce hydrogen are examined, along with the variables that affect production rates and yields, such as substrate specialization, enzymatic efficiency, and ambient circumstances. Important routes including photo fermentation, dark fermentation, and bio photolysis are discussed, along with their benefits, drawbacks, and potential for integration to increase overall efficiency. Critical bioprocess parameters, novel reactor topologies, and biomass pre-treatment methods are examined, with a focus on how they might improve hydrogen production and lessen process bottlenecks. Additionally, the potential of cutting-edge technologies like synthetic biology-driven microbial engineering and microbial electrolysis cells to transform hydrogen generation is assessed.Despite tremendous progress, problems including poor yields, scalability problems, high capital costs, and substrate competition still exist, calling for a multidisciplinary strategy that blends engineering tactics with biological breakthroughs.The necessity of coordinated efforts to improve microbial hydrogen production systems is ultimately highlighted by this analysis. This will help renewable hydrogen become a practical, scalable, and sustainable energy substitute for fossil fuels, promoting a cleaner and more resilient energy future.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100219"},"PeriodicalIF":0.0,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A comprehensive review on impregnated magnetic nanoparticle in advanced wastewater treatment: An in-depth technical review and future directions

Sustainable Chemistry for the Environment

Pub Date : 2025-02-14 DOI: 10.1016/j.scenv.2025.100220

V.C. Deivayanai, P. Thamarai, S. Karishma, A. Saravanan, A.S. Vickram, P.R. Yaashikaa, S. Sonali

Advanced wastewater treatment technologies are required to address the global water pollution crisis, and ferrous nanoparticles (FeNPs) have emerged as a promising solution because of their high surface area (>100 m2/g), tunable functionalities, and magnetic properties. Effective pollutant removal is made possible by FeNPs, which are synthesized using techniques like co-precipitation and sol-gel and typically range in size from 10 to 100 nm. Functionalization with organic ligands, silica, or polymers improves their stability and selectivity. With adsorption capacities of up to 500 mg/g, FeNPs show remarkable effectiveness in eliminating organic contaminants (like dyes and medications), heavy metals (like Pb^2 + and Cd²⁺) with > 90 % efficiency, and emerging pollutants (like microplastics). Even at low concentrations (1–10 mg/L), magnetic separation achieves > 95 % recovery efficiency by taking advantage of FeNPs' high susceptibility (10–100 emu/g). The study's novelty explores the advanced functionalization of FeNP-based systems that are environmentally sustainable, using 20–30 % less energy than traditional methods, and economically feasible, with synthesis costs ranging from $50 to $200/kg. Because of their reusability (up to 10 cycles), FeNPs are a scalable and effective solution to the world's water pollution problems, further reducing waste.

{"title":"A comprehensive review on impregnated magnetic nanoparticle in advanced wastewater treatment: An in-depth technical review and future directions","authors":"V.C. Deivayanai, P. Thamarai, S. Karishma, A. Saravanan, A.S. Vickram, P.R. Yaashikaa, S. Sonali","doi":"10.1016/j.scenv.2025.100220","DOIUrl":"10.1016/j.scenv.2025.100220","url":null,"abstract":"<div><div>Advanced wastewater treatment technologies are required to address the global water pollution crisis, and ferrous nanoparticles (FeNPs) have emerged as a promising solution because of their high surface area (>100 m2/g), tunable functionalities, and magnetic properties. Effective pollutant removal is made possible by FeNPs, which are synthesized using techniques like co-precipitation and sol-gel and typically range in size from 10 to 100 nm. Functionalization with organic ligands, silica, or polymers improves their stability and selectivity. With adsorption capacities of up to 500 mg/g, FeNPs show remarkable effectiveness in eliminating organic contaminants (like dyes and medications), heavy metals (like Pb<sup>2 +</sup> and Cd<sup>2+</sup>) with > 90 % efficiency, and emerging pollutants (like microplastics). Even at low concentrations (1–10 mg/L), magnetic separation achieves > 95 % recovery efficiency by taking advantage of FeNPs' high susceptibility (10–100 emu/g). The study's novelty explores the advanced functionalization of FeNP-based systems that are environmentally sustainable, using 20–30 % less energy than traditional methods, and economically feasible, with synthesis costs ranging from $50 to $200/kg. Because of their reusability (up to 10 cycles), FeNPs are a scalable and effective solution to the world's water pollution problems, further reducing waste.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100220"},"PeriodicalIF":0.0,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Greener exfoliation of MoS2 nanosheets using sodium alginate as biosurfactant and its photocatalytic performance against azo dyes

Sustainable Chemistry for the Environment

Pub Date : 2025-02-11 DOI: 10.1016/j.scenv.2025.100216

Mandeep Kaur , Vineet Kumar , Kulvinder Singh

Herein, we explored sodium alginate assisted MoS₂ nanosheets synthesized using dual radiation exposure i.e., ultrasonic and microwave radiation and its photocatalytic activity was assessed against methylene blue, commercial blue, and textile industrial water. Photocatalyst was characterized by various characterization techniques that showed the fabricated nanosheets were highly crystalline with hydroxyl and C-O functional group on surface. The fabricated nanosheets degraded 98.81 ± 4.12 % of MB in 4 h, 94.79 ± 0.77 % CB in 30 min, and 94.09 ± 0.50 % of textile sample in 60 min, respectively. Along with, the potent anti-oxidative activity by scavenging 88.46 ± 3.4 % of free radicals generated from the DPPH. In addition, significant antibacterial activity against E. coli and S. aureus, indicating its potential as an effective antibacterial agent. The findings of this study will aid in the creation of a wider range of two-dimensional nanocomposites that can be utilized as materials for water remediation.

{"title":"Greener exfoliation of MoS2 nanosheets using sodium alginate as biosurfactant and its photocatalytic performance against azo dyes","authors":"Mandeep Kaur , Vineet Kumar , Kulvinder Singh","doi":"10.1016/j.scenv.2025.100216","DOIUrl":"10.1016/j.scenv.2025.100216","url":null,"abstract":"<div><div>Herein, we explored sodium alginate assisted MoS<sub>2</sub> nanosheets synthesized using dual radiation exposure i.e., ultrasonic and microwave radiation and its photocatalytic activity was assessed against methylene blue, commercial blue, and textile industrial water. Photocatalyst was characterized by various characterization techniques that showed the fabricated nanosheets were highly crystalline with hydroxyl and C-O functional group on surface. The fabricated nanosheets degraded 98.81 ± 4.12 % of MB in 4 h, 94.79 ± 0.77 % CB in 30 min, and 94.09 ± 0.50 % of textile sample in 60 min, respectively. Along with, the potent anti-oxidative activity by scavenging 88.46 ± 3.4 % of free radicals generated from the DPPH. In addition, significant antibacterial activity against <em>E. coli</em> and <em>S. aureus</em>, indicating its potential as an effective antibacterial agent. The findings of this study will aid in the creation of a wider range of two-dimensional nanocomposites that can be utilized as materials for water remediation.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100216"},"PeriodicalIF":0.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143444940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

首页上一页

下一页尾页

类型

全部化学•材料生命科学医学物理工程技术环境•农林材料科学地球科学法学管理学化学环境科学与生态学计算机科学教育学经济学农林科学人文科学生物学数学物理与天体物理心理学综合性期刊其他工业工程理学历史学农学文学信息工程

数据库

全部 ACS Publications Elsevier ieeexplore Springer The Royal Society of Chemistry Wiley

期刊

Sustainable Chemistry for the Environment

全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.

﹀