•MAD 264 W takes shorter drying time than MAD 136 W and oven drying.•The drying of M. paradisiaca L. leaves using MAD showed a good fit to the Jena-Das model.•MAD 264 W has lower relative electric ...consumption (EC*) than MAD 136 W and oven drying.•MAD 264 W has lower relative CO2 emission (ECO2*) than MAD 136 W and oven drying.
Indonesia is one of the most important countries in Asia for banana agriculture (Musa spp.). Some parts of the banana tree are widely utilized by humans, especially the leaves. Even the dried banana leaves also have many advantages, such as can be used in producing biogas. Appropriate and environmentally friendly drying methods are needed to minimize process energy consumption and remove moisture from biological products economically. Microwave-Assisted Drying can be an alternative to achieve high efficiency, low carbon, and good quality control in drying Musa paradisiaca L. leaves. In order to optimize the drying process, mathematical models of drying kinetics, electric consumption, and environmental impact can also be investigated. Therefore, this study is to evaluate the best kinetics model for the drying behavior of Musa paradisiaca L. leaves by MAD and to determine the electric consumption and CO2 emission parameters of the drying process through a comparison of two drying methods (MAD and oven drying). The best model generated is Jena-Das model (264 W of microwave power) as indicated by R2, SSE, RMSE, MSE, X2 with a value of 0.998994, 0.001036, 0.010728, 0.000115, and 0.009298, respectively. Meanwhile, the electric consumption (Ec) for drying Musa paradisiaca L. leaves using MAD with 136 W of microwave power, 264 W of microwave power, and oven drying resulted in values of 0.0193, 0.0198, and 8.100 kW h, respectively. And CO2 emission produced on drying Musa paradisiaca L. leaves using MAD with 136 W of microwave power, 264 W of microwave power and oven drying are 0.0154, 0.0158, and 6.4800 kg, respectively.
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•The drying characteristics of moringa leaves using MD method were investigated.•14 mathematical models are used to evaluate the drying kinetics of moringa leaves.•The Midilli Kucuk model showed the ...best results of the drying kinetics.•Energy consumption and CO2 emission due to the effect of MD are investigated.•MD drying method is more effective than oven drying.
The objectives of this moringa leaf drying research are: (i) evaluating moringa leaf drying using fourteen mathematical models, (ii) analyzing EC, CO2 emissions, and SEC in drying moringa leaves using microwave and oven. Moringa leaf drying in the microwave uses 2 microwave powers, namely 136 W and 264 W. Moringa leaves used for drying contain an average of 73.65–74.10 % water. Non-linear regression methods are used to estimate drying coefficients with fourteen mathematical models. Seven error function were used to evaluate fourteen models used. With the lowest AICCorrected values of -201.3585 and -67.7706, the Midilli Kucuk model is known to be the best model for all microwave power varieties. There are four parameters of the Midilli Kucuk model at a microwave power of 136 W of “k” value of 0.00012 and a microwave power of 264 W of “k” value of 0.00024. This “k” value will be used as the amount of drying rate of moringa leaves with MD method. EC, CO2 Emission, and SEC calculations were carried out to determine the effectiveness of MD method rather than the conventional method. EC values of 0.0202–0.0289 kWh, CO2 emission of 0.0161–0.0231 kg, and SEC of 2.7091–3.9017 kWh/kg water for MD method were obtained. The results show that MD is more effective than conventional drying with EC values of 14.4000 kWh, CO2 emission of 11.5200 kg, and SEC of 196.6289 kWh/kg water. Therefore, MD is a method that is more environmentally friendly than the conventional method (oven drying).
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Basil (Ocimum sanctum) leaves, commonly known as holy basil, have various health benefits due to their rich phytochemical content. However, fresh basil leaves face challenges related to their ...perishability and short shelf life. This study explores the use of edible coating, specifically chitosan, to extend the shelf life of basil leaves. Then basil leaves with chitosan coating were dried using microwave-assisted drying (MAD) method with variations of microwave power (136, 264, 440, and 616 W), mass of basil leaves (5, 10, and 15 g), and chitosan concentration (0, 2.5, and 5 %). The purpose of this study is to analyze the color, effective moisture diffusivity, and drying kinetics. Five mathematical models and seven error functions were used. The Avhad and Marchetti Model was identified as the most suitable model to describe the drying kinetics of basil leaves with chitosan coating. The Deff value increased with decreasing mass of basil leaves, decreasing chitosan concentration, and increasing microwave power. Deff values ranged from 0.001 to 0.002 m2/s. The thickness of the basil leaves also played a role in the fluctuation of Deff values. The highest ΔE value was obtained by 5 % concentration of chitosan. The chitosan coating, especially at a concentration of 2.5 %, showed discoloration indicating better preservation of the original color of basil leaves. In conclusion, this study shows that chitosan coating and MAD are effective strategies to extend the shelf life of basil leaves and can provide valuable insights for future applications in leaf drying or thin layer drying processes.
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•First study on drying basil leaves with chitosan coating using MAD•The Avhad and Marchetti model showed a good fit for drying chitosan-coated basil leaves.•At 2.5 % chitosan concentration showed better color change for preservation of basil leaves.•The Deff value increased with increasing MP and decreasing leaf mass and chitosan concentration.•The highest ΔE value was obtained by 5 % concentration of chitosan.
Increased industrialization led to a large amount of wastewater being generated. Heavy metals (HMs), especially mercury, are one of the toxic and harmful contaminants in wastewater. Therefore, it is ...essential to develop sustainable ecotechnology that can purify wastewater. Microalgae have recently been employed as an alternative to conventional methods for removing HMs because they are renewable resources designed to treat wastewater and produce useful products. In addition, microalgae have high selectivity in binding metal ions and removing harmful substances. This review mainly focused on removing mercury from wastewater by bioremediation of microalga (Chlorella vulgaris) and utilization of microalgae biomass in several applications. The review is helpful to support sustainable natural resource development for scientists, freshwater management facility managers, wastewater treatment facility operators, and industrial communities.
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•Chlorella vulgaris has been used as an alternative for mercury removal in wastewater.•Bioremediation is a potential method for removing mercury.•Chlorella vulgaris biomass can be utilized for biodiesel production and catalysts.
The rapid development of the industrial world causes wastewater containing dyes to continue to increase. Even in recent years, the food, textile, cosmetic, plastic, and printing industries have ...developed the use of dyes. Methylene blue (MB) is one of the cationic dyes widely used in dyeing silk, wood, and cotton because of its absorbency and good fastness to materials. The adsorption process is the best technique and preferred in removing dyes from wastewater due to excellent selectivity, high efficiency from high-quality treated effluent, flexibility in design, and simplicity. Therefore, there is a growing interest to identify low-cost alternative adsorbents that have reasonable adsorption efficiency, especially natural materials such as leaves. In this study, research on MB adsorption using leaves was analyzed using bibliometric analysis. Information of bibliometric is extracted from the Scopus database with the keyword “Methylene Blue”, “Adsorption or Desorption”, and “Leaves or leaf”. The results showed that India, Desalination and Water Treatment, and SASTRA Deemed University were the country, journal, and institution that contributed the most publications on this topic. Therefore, it is expected that with the use of bibliometrics, the use of leaf-based MB adsorption processes in their potential for MB dye removal can be investigated especially for large-scale development.
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•Adsorption is more promising for large-scale development than photocatalytic degradation.•Adsorbent based on leaves needs further research, especially from a techno-economic perspective.•The first bibliometric study on MB adsorption using leaves was reported.•The high frequency of “adsorption” and “methylene blue” for the research hotspot.
Aromatherapy is a natural treatment method that utilizes essential oils extracted from aromatic plants. The lavender plant (Lavandula angustifolia) contains substances that can inhibit bacterial ...growth, such as linalool and linalyl acetate. The search results show that linalool and linalyl acetate, components of lavender essential oil, can provide anti-anxiety effects and play a role in relaxation. This research has significance in the context of developing natural medicine through aromatherapy. A systematic review and meta-analysis of studies on the effects of lavender essential oil on anxiety found that oral administration of the oil was effective in treating anxiety, while inhalation showed its potential to reduce anxiety. Additionally, linalyl acetate has been shown to have anti-anxiety and anti-stress effects, as evidenced by a decrease in anxiety visual analog scale (VAS) and stress levels in cancer patients undergoing chemotherapy. This article provides a systematic overview of the productivity and visibility of aromatherapy research over the past two decades, focusing on the number of articles published and the number of citations. The majority of articles were written in English, and China was the leading country in the number of articles published. The article that received the highest number of citations was published at Shiraz University of Medical Sciences. The findings of this study can be used to organize and prioritize future research efforts in aromatherapy research.
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•First to discuss effect of lavender essential oil for aromatherapy and mental health.•Lavender essential oil shows an increase in the last 10 years.•Visualization of scientific publications in various countries based on VOSviewer.•This discuss can be used to support mental health.
The increase in diseases and outbreaks triggered by pathogenic microorganisms of various kinds of bacteria has increased interest in the development of the use of natural materials as antibacterial ...agents. Natural materials that contain antibacterial substances can be found in essential oils. Plants that contain essential oils are very abundant in this world, especially clove oil. Clove oil has a high content of eugenol, which makes it have strong antibacterial properties. Therefore, many developments have been carried out in various fields related to clove oil, both in the medical field as an anti-inflammatory and analgesic, as well as in the food field as a food preservative and antibacterial food packaging. This study aims to present a comprehensive analysis map of publications related to the advantages of clove oil as an antibacterial bibliometrically using VOSviewer software. Such as research trends, emerging keywords, collaboration between researchers, and contributions from various countries. Using the query: ((TITLE-ABS-KEY(clove oil) AND TITLE-ABS-KEY(antibacterial))), 697 related literatures published in the period 1944–2024 were analyzed. From the data obtained, it was found that there was an increasing trend of publications although it was not significant and fluctuating. Overall, this research can be used to facilitate the author in identifying research gaps and become a strong basis for compiling a comprehensive and informative literature review for further research directions in the future of this research topic.
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•Positive trends in the clove oil as an antibacterial using bibliometrics analysis•Clove oil has strong antimicrobial activity, due to its eugenol content•Analyze in terms of year, regions, languages, authors, subject areas, and keywords•Visualization of co-occurrence and co-authorship based on VOSviewer
The development of membrane separation in industrial currently widely utilized, especially for electrodialysis membrane. Electrodialysis is becoming increasingly popular since it is an electrically ...driven membrane technology that mainly uses an ion exchange process. In this study, research trends of electrodialysis worldwide is presented, using a bibliometric study of publications from 1993 to 2023. The Scopus database found 1642 publications related to electrodialysis. The paper identifies several aspects of research assessment based on bibliometric analysis, including the trend, the most influential country, co-authorship, keyword term, publication metrics by Scimago Journal & Country Rank (SJR), and a comparison of each university using QS World University Rankings. China is the most prolific contributor in this area, with 439 publications. With 158 publications overall, 2022 has also shown the greatest number of electrodialysis publications. The two universities with the most publications are Université Laval in Canada and the University of Science and Technology of China, each with 66. Based on their QS World University Rankings performance assessment, both of them are suggested for advanced study, notably in the field of electrodialysis research. As a result, it is predicted that these bibliometrics will be useful for future advancements in the study of electrodialysis.
Biofuels have the potential to replace conventional fuels due to their impact on the environment. However, to maximize product yield and ease of processing, it is necessary to select the most ...effective catalyst. Solid acid catalyst is one of the most researched because of its advantages compared to other catalysts. This catalyst has a high free fatty acid content and can help esterification and transesterification reactions in biodiesel production simultaneously without saponification reactions and produce higher biodiesel yields. This study can be used as a recommendation for researchers to find out the research trend of solid acid catalysts for biodiesel and biofuels in the future for the advancement of science. From 2005 to 2023 using the Scopus database, a total of 819 documents have been published with an increasing and consistent graph in 2018–2022 with the two most productive countries being China and India. Analysis using VOSviewer with bibliometric analysis method shows the most discussed keywords on this topic are Biofuel, Catalyst, and Solid Acid Catalyst.
