Pub Date : 2025-01-01DOI: 10.1016/j.nxsust.2025.100197
Mark C. Leaper, Li Xuan Yeo, Diganta B. Das, Sean Creedon, Rob Bentham
This study examines the feasibility of using mischanthus biochar to remove Fe2 + ions from a neutral solution, a situation commonly found in well boreholes; this is increasingly relevant in water-stressed areas, where cheap decentralized water treatment is more appropriate. Mischanthus biochar produced at 700°C was investigated for its capacity to adsorb iron (II) ions using 50 mL solution batches at a starting a concentration of 1000 mgL−1 at pH 7.0. It was found that a biochar dosage of 1 g removed up to 90 % of iron (II) ions and that adsorption kinetics were pseudo-second order, showing a prevalence of chemisorption. Our data also showed that the adsorption followed the Langmuir isotherm model, with the Miscanthus biochar having an adsorption capacity of around 40 mgg−1, similar to previous studies at the same conditions. This study demonstrated that even without post-treatment, miscanthus biochar is feasible as an adsorbent of Fe2+ and further investigation to optimize a decentralized water treatment system is appropriate.
{"title":"Adsorption of iron (II) ions from aqueous solution using Miscanthus biochar as a sustainable bioresource – preliminary batch studies","authors":"Mark C. Leaper, Li Xuan Yeo, Diganta B. Das, Sean Creedon, Rob Bentham","doi":"10.1016/j.nxsust.2025.100197","DOIUrl":"10.1016/j.nxsust.2025.100197","url":null,"abstract":"<div><div>This study examines the feasibility of using mischanthus biochar to remove Fe<sup>2 +</sup> ions from a neutral solution, a situation commonly found in well boreholes; this is increasingly relevant in water-stressed areas, where cheap decentralized water treatment is more appropriate. Mischanthus biochar produced at 700°C was investigated for its capacity to adsorb iron (II) ions using 50 mL solution batches at a starting a concentration of 1000 mgL<sup>−1</sup> at pH 7.0. It was found that a biochar dosage of 1 g removed up to 90 % of iron (II) ions and that adsorption kinetics were pseudo-second order, showing a prevalence of chemisorption. Our data also showed that the adsorption followed the Langmuir isotherm model, with the Miscanthus biochar having an adsorption capacity of around 40 mgg<sup>−1</sup>, similar to previous studies at the same conditions. This study demonstrated that even without post-treatment, miscanthus biochar is feasible as an adsorbent of Fe<sup>2+</sup> and further investigation to optimize a decentralized water treatment system is appropriate.</div></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":"6 ","pages":"Article 100197"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145323813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-01DOI: 10.1016/j.nxsust.2025.100162
Md Zahidul Anam , Soumik Sarkar , A.B.M. Mainul Bari , Abu Reza Md. Towfiqul Islam , Asif Raihan
The adoption of blockchain technology holds enormous potential to promote sustainability in the pharmaceutical industry. Blockchain technology can be employed to monitor medicine movements, check drug authenticity, manage patient information, and improve the overall supply chain sustainability performance and data management. However, there are considerable challenges associated with adopting and implementing blockchain technology in the pharmaceutical sector, particularly in an emerging economy like Bangladesh. This study, therefore, aims to develop a framework that identifies and analyzes the challenges in emerging economies using an integrated Multi-Criteria Decision Making (MCDM) approach combining Pythagorean fuzzy theory with the decision-making trial and evaluation laboratory (DEMATEL) method. First, the key challenges were identified from the literature review and expert feedback. Then, the Pythagorean fuzzy DEMATEL (PF-DEMATEL) method was used to assess, rank, and explore the relations among these identified challenges. The obtained results suggest that the most crucial challenges to adopting blockchain technology in the pharmaceutical industry in emerging economies are the complexity to integrate blockchain into the existing system (prominence weight 6.699), data storage and security issues (prominence weight 6.495), and lack of proper IT infrastructure (prominence weight 6.376). Results also indicate that the lack of long-term vision for sustainable implementation (causal weight 1.231) is the most influential, and the lack of universal applicability and proper standardization (causal weight −0.30) is the most influenced challenge. The study's outcome is expected to aid industry managers and policymakers in devising more outcome-based strategies to successfully implement blockchain technology and ensure long-term sustainability in the pharmaceutical sector.
{"title":"Exploring blockchain technology adoption challenges in the pharmaceutical industry to promote sustainability: A Pythagorean fuzzy approach","authors":"Md Zahidul Anam , Soumik Sarkar , A.B.M. Mainul Bari , Abu Reza Md. Towfiqul Islam , Asif Raihan","doi":"10.1016/j.nxsust.2025.100162","DOIUrl":"10.1016/j.nxsust.2025.100162","url":null,"abstract":"<div><div>The adoption of blockchain technology holds enormous potential to promote sustainability in the pharmaceutical industry. Blockchain technology can be employed to monitor medicine movements, check drug authenticity, manage patient information, and improve the overall supply chain sustainability performance and data management. However, there are considerable challenges associated with adopting and implementing blockchain technology in the pharmaceutical sector, particularly in an emerging economy like Bangladesh. This study, therefore, aims to develop a framework that identifies and analyzes the challenges in emerging economies using an integrated Multi-Criteria Decision Making (MCDM) approach combining Pythagorean fuzzy theory with the decision-making trial and evaluation laboratory (DEMATEL) method. First, the key challenges were identified from the literature review and expert feedback. Then, the Pythagorean fuzzy DEMATEL (PF-DEMATEL) method was used to assess, rank, and explore the relations among these identified challenges. The obtained results suggest that the most crucial challenges to adopting blockchain technology in the pharmaceutical industry in emerging economies are the <em>complexity to integrate blockchain into the existing system</em> (prominence weight 6.699), data storage and security issues (prominence weight 6.495), and <em>lack of proper IT infrastructure</em> (prominence weight 6.376). Results also indicate that the <em>lack of long-term vision for sustainable implementation</em> (causal weight 1.231) is the most influential, and the <em>lack of universal applicability and proper standardization</em> (causal weight −0.30) is the most influenced challenge. The study's outcome is expected to aid industry managers and policymakers in devising more outcome-based strategies to successfully implement blockchain technology and ensure long-term sustainability in the pharmaceutical sector.</div></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":"6 ","pages":"Article 100162"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144713437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-01DOI: 10.1016/j.nxsust.2025.100142
Md. Shamiul Basar Himel , Mahmudul Hasan , Md. Hasan Ali , Nahyan Ahnaf Pratik , Md Akib Ul Islam , Fahim Tanvir , Adrita Anwar , Md. Jabed Alam
Over the years, several geometrical and operational improvements have been made to the solar flat plate collector to utilize the solar energy more effectively. The present study investigated the effect of the step-change in absorber plate thickness on the thermal performance of flat plate solar collectors (FPCs). Two configurations were developed of which one featuring a uniform absorber plate thickness of 0.4 cm and the other exhibiting a variable thickness, segmenting the plate into equal portions of 0.2 cm and 0.6 cm. Both designs were assessed under diverse solar radiation and meteorological situations to measure their heat gain, temperature increase, and efficiency. The findings indicated that the step-changed design attained an efficiency enhancement of 4.6–12.7 % compared to the uniform plate, with peak efficiency reaching 67.7 %. The thicker portion of the step-changed plate improved thermal performance by decreasing thermal resistance and maintaining heat transfer during variable radiation conditions. Nonetheless, its thermal inertia impeded heat transmission under low radiation circumstances. These findings illustrate the potential of step-changed absorber plates as a cost-efficient, enhanced thermal performance substitute for FPCs, providing significant insights for the advancement of solar thermal technology.
{"title":"Experimental performance investigation on the effect of step change in absorber plate thickness of flat plate solar collector","authors":"Md. Shamiul Basar Himel , Mahmudul Hasan , Md. Hasan Ali , Nahyan Ahnaf Pratik , Md Akib Ul Islam , Fahim Tanvir , Adrita Anwar , Md. Jabed Alam","doi":"10.1016/j.nxsust.2025.100142","DOIUrl":"10.1016/j.nxsust.2025.100142","url":null,"abstract":"<div><div>Over the years, several geometrical and operational improvements have been made to the solar flat plate collector to utilize the solar energy more effectively. The present study investigated the effect of the step-change in absorber plate thickness on the thermal performance of flat plate solar collectors (FPCs). Two configurations were developed of which one featuring a uniform absorber plate thickness of 0.4 cm and the other exhibiting a variable thickness, segmenting the plate into equal portions of 0.2 cm and 0.6 cm. Both designs were assessed under diverse solar radiation and meteorological situations to measure their heat gain, temperature increase, and efficiency. The findings indicated that the step-changed design attained an efficiency enhancement of 4.6–12.7 % compared to the uniform plate, with peak efficiency reaching 67.7 %. The thicker portion of the step-changed plate improved thermal performance by decreasing thermal resistance and maintaining heat transfer during variable radiation conditions. Nonetheless, its thermal inertia impeded heat transmission under low radiation circumstances. These findings illustrate the potential of step-changed absorber plates as a cost-efficient, enhanced thermal performance substitute for FPCs, providing significant insights for the advancement of solar thermal technology.</div></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":"6 ","pages":"Article 100142"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144205538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The present study has investigated the relationship between total column ammonia (TCNH₃) and different environmental factors in the non-attainment regions viz., Damtal, Baddi and Paonta Sahib in the North-Western Himalayas. The 12 years satellite data was obtained from the Infrared Atmospheric Sounding Interferometer (IASI) and the quantile regression (QR) tool was used to study the variability in long-term trends of TCNH₃ across its distribution. The maximum concentration of TCNH₃ was observed during July in Paonta Sahib followed by Baddi and Damtal. Simultaneously, august month shows notable decrease in TCNH₃ levels, while winter season again shows opposite trend in Paonta Sahib. Further, a significant positive correlation is observed between TCNH₃ and key environmental variables such as PM2.5, temperature, total column water vapour (TCWV), and rainfall. Similarly, an increasing trend was also highlighted in higher quantile (τ>0.8) across all cities, while, negative trend was observed (τ<0.8) in Damtal and Paonta Sahib. Additionally, PM2.5 levels displayed substantial positive trends in significantly higher quantiles (τ>0.95), while rainfall showed significant variability with notable negative trends in higher quantiles (τ>0.9). Overall, the present study enhanced the understanding of TCNH₃ variability across the three non-attainment cities of Himachal Pradesh, emphasizing the need for continued monitoring and targeted environmental management strategies to mitigate the impact of industrial emissions on air quality and public health.
{"title":"A comprehensive study of variability in total column of ammonia using quantile regression approach over non-attainment cities of the North-Western Himalayas","authors":"Akshay , Ashish Dogra , Dilbag Singh , Ankit Tandon","doi":"10.1016/j.nxsust.2025.100146","DOIUrl":"10.1016/j.nxsust.2025.100146","url":null,"abstract":"<div><div>The present study has investigated the relationship between total column ammonia (TCNH₃) and different environmental factors in the non-attainment regions viz., Damtal, Baddi and Paonta Sahib in the North-Western Himalayas. The 12 years satellite data was obtained from the Infrared Atmospheric Sounding Interferometer (IASI) and the quantile regression (QR) tool was used to study the variability in long-term trends of TCNH₃ across its distribution. The maximum concentration of TCNH₃ was observed during July in Paonta Sahib followed by Baddi and Damtal. Simultaneously, august month shows notable decrease in TCNH₃ levels, while winter season again shows opposite trend in Paonta Sahib. Further, a significant positive correlation is observed between TCNH₃ and key environmental variables such as PM<sub>2.5</sub>, temperature, total column water vapour (TCWV), and rainfall. Similarly, an increasing trend was also highlighted in higher quantile (τ>0.8) across all cities, while, negative trend was observed (τ<0.8) in Damtal and Paonta Sahib. Additionally, PM<sub>2.5</sub> levels displayed substantial positive trends in significantly higher quantiles (τ>0.95), while rainfall showed significant variability with notable negative trends in higher quantiles (τ>0.9). Overall, the present study enhanced the understanding of TCNH₃ variability across the three non-attainment cities of Himachal Pradesh, emphasizing the need for continued monitoring and targeted environmental management strategies to mitigate the impact of industrial emissions on air quality and public health.</div></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":"6 ","pages":"Article 100146"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-01DOI: 10.1016/j.nxsust.2025.100160
Suhaib M. Alawad , Osman Shamet , Dahiru Lawal , Atia E. Khalifa
This study investigates the performance of a multistage vacuum membrane distillation (MSVMD) system integrated with multiple mechanical vapor compressors (MVCs) to enhance energy recovery and improve cost-effectiveness. A comprehensive analysis is conducted to evaluate key performance indicators, including system productivity, specific energy consumption (SEC), and water production cost, across six different VMD configurations. Additionally, the effects of operational parameters such as feed temperature, vacuum pressure, and compressor efficiency are examined through a detailed parametric study. Results indicate that integrating 10 MVCs with the VMD system achieves a maximum freshwater production of 1045 L/h, representing a 297 % increase compared to a system with a single MVC at a feed temperature of 90°C. The lowest SEC recorded is 78 kWh/m³ , attained using 6 MVCs with a compressor efficiency of 90 %, leading to a minimum water production cost of 6.3 $/m³ . However, further analysis reveals that while increasing the number of MVCs enhances productivity and energy efficiency, it also raises capital investment due to the high initial cost of compressors. The operating cost primarily depends on electricity consumption, while maintenance costs escalate with the number of compressors due to additional servicing requirements. A cost-benefit analysis suggests that beyond 10 MVCs, the marginal gains in productivity are offset by rising costs, indicating an optimal balance between energy savings and economic feasibility. This study provides valuable insights into the economic and operational trade-offs of integrating MVCs with VMD, offering a viable pathway for large-scale desalination and water treatment applications.
{"title":"Multiple vapor compressors for enhanced performance and cost savings in vacuum membrane distillation","authors":"Suhaib M. Alawad , Osman Shamet , Dahiru Lawal , Atia E. Khalifa","doi":"10.1016/j.nxsust.2025.100160","DOIUrl":"10.1016/j.nxsust.2025.100160","url":null,"abstract":"<div><div>This study investigates the performance of a multistage vacuum membrane distillation (MSVMD) system integrated with multiple mechanical vapor compressors (MVCs) to enhance energy recovery and improve cost-effectiveness. A comprehensive analysis is conducted to evaluate key performance indicators, including system productivity, specific energy consumption (SEC), and water production cost, across six different VMD configurations. Additionally, the effects of operational parameters such as feed temperature, vacuum pressure, and compressor efficiency are examined through a detailed parametric study. Results indicate that integrating 10 MVCs with the VMD system achieves a maximum freshwater production of 1045 L/h, representing a 297 % increase compared to a system with a single MVC at a feed temperature of 90°C. The lowest SEC recorded is 78 kWh/m³ , attained using 6 MVCs with a compressor efficiency of 90 %, leading to a minimum water production cost of 6.3 $/m³ . However, further analysis reveals that while increasing the number of MVCs enhances productivity and energy efficiency, it also raises capital investment due to the high initial cost of compressors. The operating cost primarily depends on electricity consumption, while maintenance costs escalate with the number of compressors due to additional servicing requirements. A cost-benefit analysis suggests that beyond 10 MVCs, the marginal gains in productivity are offset by rising costs, indicating an optimal balance between energy savings and economic feasibility. This study provides valuable insights into the economic and operational trade-offs of integrating MVCs with VMD, offering a viable pathway for large-scale desalination and water treatment applications.</div></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":"6 ","pages":"Article 100160"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144722456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lead free metal halide Perovskites have recently received attention for their use in light-emitting diodes, solar cells, lasers and other optoelectronic devices. To investigate the structural, electronic, optical and mechanical characteristics of the non-toxic metal halides FrBCl3 (B = Mg, Ba), the first principles calculation has been performed implementing full-potential linearized augmented plane wave approach (FP-LAPW) in the density functional theory (DFT) in WIEN2k code. As Mg atom is replaced by Ba atom, the lattice parameter has also increased which also affected in other optoelectronic properties. The simulated band structures and density of states reveal that both of these compounds have indirect wide bandgap, which are 3.77 eV for FrMgCl3 and 4.52 eV for FrBaCl3. The optical spectra demonstrate that absorbance enhanced about in the ultraviolet region (16–17 eV). The highest peak values of conductivity, dielectric constant and low reflectivity have also been observed in the ultraviolet region. The investigation of mechanical properties reveal that the composites are mechanically stable. According to a comprehensive study of the physical characteristics, FrBaCl3 may be a possibility for optoelectronic uses. As FrBaCl3 contains the radioactive element, this may be used in medical sector for diagnosis and imaging technology.
{"title":"Comprehensive first-principles study of structural, electronic, optical, and elastic properties of FrBCl3 (B = Mg & Ba) cubic perovskites","authors":"Sahadat Jaman, K.M. Kamruzzaman, Md. Rokonuzzaman Rokon, Faria Farjana, Mohammad Abdur Rashid, Md. Borhanul Asfia","doi":"10.1016/j.nxsust.2025.100169","DOIUrl":"10.1016/j.nxsust.2025.100169","url":null,"abstract":"<div><div>Lead free metal halide Perovskites have recently received attention for their use in light-emitting diodes, solar cells, lasers and other optoelectronic devices. To investigate the structural, electronic, optical and mechanical characteristics of the non-toxic metal halides FrBCl<sub>3</sub> (B = Mg, Ba), the first principles calculation has been performed implementing full-potential linearized augmented plane wave approach (FP-LAPW) in the density functional theory (DFT) in WIEN2k code. As Mg atom is replaced by Ba atom, the lattice parameter has also increased which also affected in other optoelectronic properties. The simulated band structures and density of states reveal that both of these compounds have indirect wide bandgap, which are 3.77 eV for FrMgCl<sub>3</sub> and 4.52 eV for FrBaCl<sub>3</sub>. The optical spectra demonstrate that absorbance enhanced about <span><math><mrow><mn>2</mn><mo>.</mo><mn>2</mn><mo>×</mo><msup><mrow><mn>10</mn></mrow><mn>6</mn></msup><mspace></mspace><msup><mrow><mi>cm</mi></mrow><mrow><mo>-</mo><mn>1</mn></mrow></msup></mrow></math></span> in the ultraviolet region (16–17 eV). The highest peak values of conductivity, dielectric constant and low reflectivity have also been observed in the ultraviolet region. The investigation of mechanical properties reveal that the composites are mechanically stable. According to a comprehensive study of the physical characteristics, FrBaCl<sub>3</sub> may be a possibility for optoelectronic uses. As FrBaCl<sub>3</sub> contains the radioactive element, this may be used in medical sector for diagnosis and imaging technology.</div></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":"6 ","pages":"Article 100169"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144903190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The world is facing global warming due to natural processes and human activities. From 1880–1980, the global average temperature increased by 1°C per century. Land Surface Temperature (LST) is a crucial climatic variable for analyzing the interaction between the Earth's surface and the atmosphere. Java Island has the highest population and is more urbanized than other islands in Indonesia. From January 2001 to January 2020, LST daytime data were downloaded from NASA's Moderate Resolution Imaging Spectroradiometer (MODIS) and Visible Infrared Imaging Radiometer Suite (VIIRS) Land Products Global Subsetting and Visualization Tool. This study aims to investigate the LST seasonal patterns and trends of Bali and Java islands. The appropriate distance between sub-regions was also observed, with 105 pixels and 52.5 pixels producing two and six super-regions, respectively. It was found that seasonal patterns could be represented with pixel distances of 105 and 52.5, using eight knots of cubic splines. From 2001–2020, the lowest LST was recorded in January, while the highest was in September. The highest average daily LST, 38.32 °C, was found in Cikande, Serang, and Banten, likely due to industrial activity. This study also analyzed LST fluctuations using seven knots of the cubic spline. It was found that the average daily LST decreased by −0.113 °C per decade in Java and Bali. The western super-regions of Java showed significant LST increases, while the eastern super-regions showed slight decreases. For the 52.5-pixel distance, there was no substantial variation in average LST, though Jakarta and Banten showed significant increases. The 105-pixel distance is useful for examining LST variations on small islands like Java, while the 52.5-pixel distance can detect deeper variations in smaller super-regions. This study also noted that monsoon season and precipitation impact LST decline, and suggested that further research is needed to validate these findings. Additional variables like NDVI, land elevation, and land cover should be considered for more accurate estimations, especially on larger islands or continents farther from the equator.
{"title":"Java and Bali land surface temperature decrease variation","authors":"Munawar Munawar , Tofan Agung Eka Prasetya , Marzuki Marzuki , Muhamad Rifki Taufik , Teuku Fadhla","doi":"10.1016/j.nxsust.2024.100096","DOIUrl":"10.1016/j.nxsust.2024.100096","url":null,"abstract":"<div><div>The world is facing global warming due to natural processes and human activities. From 1880–1980, the global average temperature increased by 1°C per century. Land Surface Temperature (LST) is a crucial climatic variable for analyzing the interaction between the Earth's surface and the atmosphere. Java Island has the highest population and is more urbanized than other islands in Indonesia. From January 2001 to January 2020, LST daytime data were downloaded from NASA's Moderate Resolution Imaging Spectroradiometer (MODIS) and Visible Infrared Imaging Radiometer Suite (VIIRS) Land Products Global Subsetting and Visualization Tool. This study aims to investigate the LST seasonal patterns and trends of Bali and Java islands. The appropriate distance between sub-regions was also observed, with 105 pixels and 52.5 pixels producing two and six super-regions, respectively. It was found that seasonal patterns could be represented with pixel distances of 105 and 52.5, using eight knots of cubic splines. From 2001–2020, the lowest LST was recorded in January, while the highest was in September. The highest average daily LST, 38.32 °C, was found in Cikande, Serang, and Banten, likely due to industrial activity. This study also analyzed LST fluctuations using seven knots of the cubic spline. It was found that the average daily LST decreased by −0.113 °C per decade in Java and Bali. The western super-regions of Java showed significant LST increases, while the eastern super-regions showed slight decreases. For the 52.5-pixel distance, there was no substantial variation in average LST, though Jakarta and Banten showed significant increases. The 105-pixel distance is useful for examining LST variations on small islands like Java, while the 52.5-pixel distance can detect deeper variations in smaller super-regions. This study also noted that monsoon season and precipitation impact LST decline, and suggested that further research is needed to validate these findings. Additional variables like NDVI, land elevation, and land cover should be considered for more accurate estimations, especially on larger islands or continents farther from the equator.</div></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":"6 ","pages":"Article 100096"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163058","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 : 2025-01-01DOI: 10.1016/j.nxsust.2025.100119
Aniekan E. Essien, Sarah E. Dickson-Anderson, Yiping Guo
The pervasive distribution of microplastics and nanoplastics in water systems has raised significant concerns about their ecological and human health impacts. Traditional methods to mitigate plastic pollution are often inadequate, prompting the need for innovative and sustainable solutions. Agricultural waste or by-products (AWBP) are underutilized sources of adsorbents for environmental pollution control, particularly for microplastic and nanoplastic removal. Despite their low cost and high adsorption capacities, AWBP are frequently burned, dumped, or placed in landfills. Most importantly, there remains a notable gap in research, i.e., a systematic review of AWBP-based adsorbents for the removal of microplastics and nanoplastics, which is the novelty of this review. Therefore, using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) method, this study reviewed the use of hydrochar, biochar, and activated carbon (collectively termed nature-based adsorbents) for the removal of microplastics and nanoplastics, focusing on their sources, properties, adsorption characteristics, and performance. The principal findings and major conclusions indicate that these adsorbents can achieve up to 100 % adsorption efficiency for the removal of microplastics and nanoplastics. Environmental factors such as pH, temperature, and co-existing species can influence adsorption performance. Functional groups like -COOH, -OH, and -CO enhanced adsorption efficiency. Multiple mechanisms, including physisorption and chemisorption, contributed to high adsorption capacities. The pseudo-second-order kinetic model best described the adsorption processes, with the Langmuir isotherm providing the best fitting. Additionally, these adsorbents offer long-term carbon sequestration and align with several Sustainable Development Goals. This review highlights current knowledge gaps and provides recommendations for future research to further improve this technology.
{"title":"Utilizing nature-based adsorbents for removal of microplastics and nanoplastics in controlled polluted aqueous systems: A systematic review of sources, properties, adsorption characteristics, and performance","authors":"Aniekan E. Essien, Sarah E. Dickson-Anderson, Yiping Guo","doi":"10.1016/j.nxsust.2025.100119","DOIUrl":"10.1016/j.nxsust.2025.100119","url":null,"abstract":"<div><div>The pervasive distribution of microplastics and nanoplastics in water systems has raised significant concerns about their ecological and human health impacts. Traditional methods to mitigate plastic pollution are often inadequate, prompting the need for innovative and sustainable solutions. Agricultural waste or by-products (AWBP) are underutilized sources of adsorbents for environmental pollution control, particularly for microplastic and nanoplastic removal. Despite their low cost and high adsorption capacities, AWBP are frequently burned, dumped, or placed in landfills. Most importantly, there remains a notable gap in research, i.e., a systematic review of AWBP-based adsorbents for the removal of microplastics and nanoplastics, which is the novelty of this review. Therefore, using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) method, this study reviewed the use of hydrochar, biochar, and activated carbon (collectively termed nature-based adsorbents) for the removal of microplastics and nanoplastics, focusing on their sources, properties, adsorption characteristics, and performance. The principal findings and major conclusions indicate that these adsorbents can achieve up to 100 % adsorption efficiency for the removal of microplastics and nanoplastics. Environmental factors such as pH, temperature, and co-existing species can influence adsorption performance. Functional groups like -COOH, -OH, and -C<img>O enhanced adsorption efficiency. Multiple mechanisms, including physisorption and chemisorption, contributed to high adsorption capacities. The pseudo-second-order kinetic model best described the adsorption processes, with the Langmuir isotherm providing the best fitting. Additionally, these adsorbents offer long-term carbon sequestration and align with several Sustainable Development Goals. This review highlights current knowledge gaps and provides recommendations for future research to further improve this technology.</div></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":"5 ","pages":"Article 100119"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143528914","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 : 2025-01-01DOI: 10.1016/j.nxsust.2025.100122
Tejeswara Rao Maganti , Krishna Rao Boddepalli
In recent years, there has been a surge in interest surrounding alkali activated concrete (AAC), a novel type of concrete praised for its environmental and construction applications. This study focuses on ternary blended alkali-activated concrete (TBAAC) using fly ash, ground granulated blast furnace slag (GGBS), and silica fume as binders. It also aims the replacement of sodium silicate (SS) solution with neutral grade sodium silicate (NGSS) solution with a silica modulus (SiO₂/Na₂O) of 3.12 to improve the fresh and hardened properties of TBAAC. In this context, the effects of silica fume and alkaline activators are studied to determine the optimum mix design and to evaluate the fresh and hardened properties of TBAAC cured under ambient conditions. To investigate the performance of TBAAC, various experiments were carried out to measure its workability, compressive strength, splitting tensile strength, flexural strength, regression analysis and microstructural characteristics. The results show TBAAC of 40 % fly ash, 50 % GGBS and 10 % silica fume resulted in higher mechanical properties, including compressive strength (74.12 MPa), splitting tensile strength (18.46 MPa), and flexural strength (20.45 MPa). The results of the XRD, SEM and EDX analysis show the formation of C-A-S-H, C-S-H, and N-A-S-H gel, indicating a densified matrix with fewer cracks and pore spaces. Furthermore, the Life Cycle Assessment (LCA) results demonstrate that the use of NGSS, with its improved environmental profile, leads to a lower environmental impact, contributing to a significant reduction in the carbon footprint of TBAAC and enhancing the sustainability of construction materials. The findings suggest that using NGSS-based TBAAC is advisable for construction applications, offering practical implications for reducing environmental impact while maintaining high performance in construction projects.
{"title":"Mechanical and microstructural properties of sustainable ternary blended alkali-activated concrete","authors":"Tejeswara Rao Maganti , Krishna Rao Boddepalli","doi":"10.1016/j.nxsust.2025.100122","DOIUrl":"10.1016/j.nxsust.2025.100122","url":null,"abstract":"<div><div>In recent years, there has been a surge in interest surrounding alkali activated concrete (AAC), a novel type of concrete praised for its environmental and construction applications. This study focuses on ternary blended alkali-activated concrete (TBAAC) using fly ash, ground granulated blast furnace slag (GGBS), and silica fume as binders. It also aims the replacement of sodium silicate (SS) solution with neutral grade sodium silicate (NGSS) solution with a silica modulus (SiO₂/Na₂O) of 3.12 to improve the fresh and hardened properties of TBAAC. In this context, the effects of silica fume and alkaline activators are studied to determine the optimum mix design and to evaluate the fresh and hardened properties of TBAAC cured under ambient conditions. To investigate the performance of TBAAC, various experiments were carried out to measure its workability, compressive strength, splitting tensile strength, flexural strength, regression analysis and microstructural characteristics. The results show TBAAC of 40 % fly ash, 50 % GGBS and 10 % silica fume resulted in higher mechanical properties, including compressive strength (74.12 MPa), splitting tensile strength (18.46 MPa), and flexural strength (20.45 MPa). The results of the XRD, SEM and EDX analysis show the formation of C-A-S-H, C-S-H, and N-A-S-H gel, indicating a densified matrix with fewer cracks and pore spaces. Furthermore, the Life Cycle Assessment (LCA) results demonstrate that the use of NGSS, with its improved environmental profile, leads to a lower environmental impact, contributing to a significant reduction in the carbon footprint of TBAAC and enhancing the sustainability of construction materials. The findings suggest that using NGSS-based TBAAC is advisable for construction applications, offering practical implications for reducing environmental impact while maintaining high performance in construction projects.</div></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":"6 ","pages":"Article 100122"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577010","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}
The toxicity of arsenic to humans is confirmed and numerous studies have been investigated its removal from water. Sodium titanates nanotubes (NaTNTs) with different tube lengths (50– 80 nm) and a mean radius of 2.685 nm have been developed by the conventional hydrothermal route. The characterization of the synthesized nanotubes was done using multiple techniques namely FTIR, HRTEM, XRD, and FESEM. The synthesized material was tested for As3+ and As5+ removal. The impact of solution (heavy metals) pH, reaction time and heavy metals initial concentrations on the removal percentage have been explored. The results confirmed the successful management of both of As5+ and As3+ arsenic ions in water with attained efficiencies of 99 % and 98 %, respectively. Hence, the synthesized nanomaterials can be efficiently applied to manage toxic arsenic in drinking water and groundwater.
{"title":"Management of highly toxic arsenic (As3+ and As5+) in water using sodium titanate nanotubes: Integrated kinetic and isothermal studies","authors":"M. Farid , A.H. Zaki , M.A.F. Basha , Nabila Shehata , M.H. Khedr","doi":"10.1016/j.nxsust.2025.100170","DOIUrl":"10.1016/j.nxsust.2025.100170","url":null,"abstract":"<div><div>The toxicity of arsenic to humans is confirmed and numerous studies have been investigated its removal from water. Sodium titanates nanotubes (NaTNTs) with different tube lengths (50– 80 nm) and a mean radius of 2.685 nm have been developed by the conventional hydrothermal route. The characterization of the synthesized nanotubes was done using multiple techniques namely FTIR, HRTEM, XRD, and FESEM. The synthesized material was tested for As<sup>3+</sup> and As<sup>5+</sup> removal. The impact of solution (heavy metals) pH, reaction time and heavy metals initial concentrations on the removal percentage have been explored. The results confirmed the successful management of both of As<sup>5+</sup> and As<sup>3+</sup> arsenic ions in water with attained efficiencies of 99 % and 98 %, respectively. Hence, the synthesized nanomaterials can be efficiently applied to manage toxic arsenic in drinking water and groundwater.</div></div>","PeriodicalId":100960,"journal":{"name":"Next Sustainability","volume":"6 ","pages":"Article 100170"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144914071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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