Bilal Ahmad Khan, Muhammad Ather Nadeem, Hussam F. Najeed Alawadi, Muhammad Mansoor Javaid, Athar Mahmood, Rafi Qamar, Mudassar Iqbal, Amina Mumtaz, Rizwan Maqbool, Hesham Oraby, Nehal Elnaggar
Abstract Nanoherbicides are articulated by exploiting the prospective of nanotechnology for effectively delivering chemical and biological herbicides using nanomaterial‐based herbicide combinations. The nanoparticles were characterized using X-ray diffraction and FT-IR. On the targeted weeds, the nanoherbicides were sprayed at the third to fourth leaf stage. Six different doses were applied. The mortality and visual injury caused by both chitosan-based nanoherbicides reached 100% at the recommended dose of standard herbicide. The 5-fold lower dose exhibited weed density and maximum wheat yield and related parameters. For the same traits, the nanoherbicide at 10-fold lower dose of commercial herbicides showed a comparable influence as the suggested dose. The size of both herbicides was found to be 35–65 nm. It was observed that the clodinofop-propargyl nanoherbicide has an intense peak appearing at a 2 θ value of 29.83°, corresponding to the (176) plane of the anatase phase and NPs of fenoxaprop- P -ethyl showed an intense peak around the 2 θ value of 30.55° corresponding to the (74) plane of the anatase phase. The FT-IR spectra of fenoxaprop- P -ethyl clearly showed that the major functional groups were located in the FT-IR region between 610 and 1,840 cm −1 and the major functional ones of clodinofop propargyl were located in the FT-IR region between 640 and 1,740 cm −1 . Nanoherbicides could restore the efficacy of conventional herbicides by improving stability and reducing toxicity.
摘要纳米除草剂是利用纳米技术的前景，利用纳米材料为基础的除草剂组合有效地传递化学和生物除草剂。利用x射线衍射和红外光谱对纳米颗粒进行了表征。在目标杂草的第3 ~第4叶期施用纳米除草剂。使用了六种不同的剂量。在标准除草剂推荐剂量下，壳聚糖基纳米除草剂的致死率和视觉损伤均达到100%。低5倍剂量对杂草密度、小麦最高产量及相关参数有显著影响。对于相同的性状，纳米除草剂在低10倍商业除草剂剂量下显示出与建议剂量相当的影响。两种除草剂的粒径均在35 ~ 65 nm之间。结果表明，氯硝磷-丙炔基纳米除草剂在锐钛矿相(176)面2 θ处29.83°处有一个强烈的峰，而芬诺沙普- P -乙基纳米除草剂在锐钛矿相(74)面2 θ处30.55°处有一个强烈的峰。芬诺沙丙- P -乙基的FT-IR光谱清楚地表明，其主要官能团位于610 ~ 1840 cm−1之间，而氯硝丙基的主要官能团位于640 ~ 1740 cm−1之间。纳米除草剂可以通过提高稳定性和降低毒性来恢复传统除草剂的药效。
{"title":"Synthesis, characterization, and evaluation of nanoparticles of clodinofop propargyl and fenoxaprop-<i>P</i>-ethyl on weed control, growth, and yield of wheat (<i>Triticum aestivum</i> L.)","authors":"Bilal Ahmad Khan, Muhammad Ather Nadeem, Hussam F. Najeed Alawadi, Muhammad Mansoor Javaid, Athar Mahmood, Rafi Qamar, Mudassar Iqbal, Amina Mumtaz, Rizwan Maqbool, Hesham Oraby, Nehal Elnaggar","doi":"10.1515/gps-2023-0105","DOIUrl":"https://doi.org/10.1515/gps-2023-0105","url":null,"abstract":"Abstract Nanoherbicides are articulated by exploiting the prospective of nanotechnology for effectively delivering chemical and biological herbicides using nanomaterial‐based herbicide combinations. The nanoparticles were characterized using X-ray diffraction and FT-IR. On the targeted weeds, the nanoherbicides were sprayed at the third to fourth leaf stage. Six different doses were applied. The mortality and visual injury caused by both chitosan-based nanoherbicides reached 100% at the recommended dose of standard herbicide. The 5-fold lower dose exhibited weed density and maximum wheat yield and related parameters. For the same traits, the nanoherbicide at 10-fold lower dose of commercial herbicides showed a comparable influence as the suggested dose. The size of both herbicides was found to be 35–65 nm. It was observed that the clodinofop-propargyl nanoherbicide has an intense peak appearing at a 2 θ value of 29.83°, corresponding to the (176) plane of the anatase phase and NPs of fenoxaprop- P -ethyl showed an intense peak around the 2 θ value of 30.55° corresponding to the (74) plane of the anatase phase. The FT-IR spectra of fenoxaprop- P -ethyl clearly showed that the major functional groups were located in the FT-IR region between 610 and 1,840 cm −1 and the major functional ones of clodinofop propargyl were located in the FT-IR region between 640 and 1,740 cm −1 . Nanoherbicides could restore the efficacy of conventional herbicides by improving stability and reducing toxicity.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134890456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Linrun Li, Suohe Yang, Haibo Jin, Guangxiang He, Xiaoyan Guo, Lei Ma
Abstract 2,5-Furandicarboxylic acid (FDCA), an eco-friendly biomass resource capable of replacing petroleum-based fuels, is gaining increasing popularity. In this article, 2,5-FDCA was prepared by liquid-phase oxidation of the sustainable precursor 5-hydroxymethylfurfural using the Co–Mn–Br catalyst system. The effects of catalyst concentration, catalyst ratio, reaction temperature, reaction time, reaction pressure, and solvent ratio on the reaction of FDCA were investigated. The products are subjected to qualitative and quantitative analyses using high-performance liquid chromatography, infrared spectroscopy, and hydrogen nuclear magnetic spectroscopy. Moreover, considering the loss of catalytic liquid, the suitable reaction conditions were determined as follows: n (Co)/ n (Mn)/ n (Br) = 1/0.04/0.5, n (HMF)/ n (HAC) = 0.05, reaction temperature of 170°C, reaction pressure of 2 MPa, reaction time 40 min, and airflow rate 1.0 L·min −1 . Under these conditions, the yield of the product is 86.01%, the purity is 97.53%, and the loss of the catalytic liquid is about 5.63%, which is at an ideal level and provides a good basis for the recovery of the subsequent catalytic liquid and multiple cycle reactions. Through the optimization of the existing process, the use of noble metal catalysts has been reduced, and the recycling of catalytic liquid has also reduced the consumption of catalysts. This advancement marks a significant stride toward sustainable development in the green chemical industry.
摘要2,5-呋喃二羧酸(FDCA)是一种可替代石油基燃料的生态友好型生物质资源，越来越受到人们的欢迎。本文采用Co-Mn-Br催化体系，对可持续前驱体5-羟甲基糠醛进行液相氧化制备了2,5- fdca。考察了催化剂浓度、催化剂配比、反应温度、反应时间、反应压力和溶剂配比对FDCA反应的影响。产品采用高效液相色谱、红外光谱、氢核磁谱进行定性和定量分析。考虑到催化液的损失，确定了适宜的反应条件:n (Co)/ n (Mn)/ n (Br) = 1/0.04/0.5, n (HMF)/ n (HAC) = 0.05，反应温度170℃，反应压力2 MPa，反应时间40 min，风量1.0 L·min−1。在此条件下，产物收率为86.01%，纯度为97.53%，催化液损失率约为5.63%，处于理想水平，为后续催化液和多循环反应的回收提供了良好的基础。通过对现有工艺的优化，减少了贵金属催化剂的使用，催化液的循环利用也降低了催化剂的消耗。这标志着绿色化工向可持续发展迈出了重要一步。
{"title":"The experimental study on the air oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid with Co–Mn–Br system","authors":"Linrun Li, Suohe Yang, Haibo Jin, Guangxiang He, Xiaoyan Guo, Lei Ma","doi":"10.1515/gps-2023-0116","DOIUrl":"https://doi.org/10.1515/gps-2023-0116","url":null,"abstract":"Abstract 2,5-Furandicarboxylic acid (FDCA), an eco-friendly biomass resource capable of replacing petroleum-based fuels, is gaining increasing popularity. In this article, 2,5-FDCA was prepared by liquid-phase oxidation of the sustainable precursor 5-hydroxymethylfurfural using the Co–Mn–Br catalyst system. The effects of catalyst concentration, catalyst ratio, reaction temperature, reaction time, reaction pressure, and solvent ratio on the reaction of FDCA were investigated. The products are subjected to qualitative and quantitative analyses using high-performance liquid chromatography, infrared spectroscopy, and hydrogen nuclear magnetic spectroscopy. Moreover, considering the loss of catalytic liquid, the suitable reaction conditions were determined as follows: n (Co)/ n (Mn)/ n (Br) = 1/0.04/0.5, n (HMF)/ n (HAC) = 0.05, reaction temperature of 170°C, reaction pressure of 2 MPa, reaction time 40 min, and airflow rate 1.0 L·min −1 . Under these conditions, the yield of the product is 86.01%, the purity is 97.53%, and the loss of the catalytic liquid is about 5.63%, which is at an ideal level and provides a good basis for the recovery of the subsequent catalytic liquid and multiple cycle reactions. Through the optimization of the existing process, the use of noble metal catalysts has been reduced, and the recycling of catalytic liquid has also reduced the consumption of catalysts. This advancement marks a significant stride toward sustainable development in the green chemical industry.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":"181 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135507269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Amr Fouda, Khalid Sulaiman Alshallash, Hossam Mohamed Atta, Mamdouh Salem El-Gamal, Mohamed Mostafa Bakry, Mohammed Ibrahim Alghonaim, Salem Salah Salem
Abstract In the current study, among 36 isolates, the bacterial strain M7 was selected as the highest cellulase producer and underwent traditional and molecular identification as Bacillus amyloliquefaciens M7. The productivity of the cellulase enzyme was optimized using the one-factor-at-a-time method. The optimization analysis showed that the best pH value for cellulase production was 7, in the presence of 1% bacterial inoculum size, 5 g·L −1 of carboxymethyl cellulose, 5 g·L −1 of peptone as nitrogen source, and incubation period of 24 h at a temperature of 35°C. The highest cellulase activity (64.98 U·mL −1 ) was obtained after optimizing conditions using BOX-Behnken Design. The maximum cellulase yield (75.53%) was obtained after precipitation by 60% ammonium sulfate, followed by purification by dialysis bag and Sephadex G-100 column chromatography. The purified cellulase enzyme was characterized by 6.38-fold enrichment, with specific activity (60.54 U·mg −1 ), and molecular weight of approximately 439.0 Da. The constituent of purified cellulase was 18 amino acids with high concentrations of 200 and 160 mg·L −1 for glycine and arginine, respectively. The purified cellulase enzyme was more stable and active at pH 8 and an incubation temperature of 50°C. The metal ions CaCl 2 , NaCl, and ZnO enhanced the activity of purified cellulase enzyme. Finally, the B. amyloliquefaciens M7-cellulase exhibits high bio-polishing activity of cotton fabrics with low weight loss (4.3%) which was attained at a maximum concentration (1%, v/v) for 90 min.
{"title":"A thermo-tolerant cellulase enzyme produced by <i>Bacillus amyloliquefaciens</i> M7, an insight into synthesis, optimization, characterization, and bio-polishing activity","authors":"Amr Fouda, Khalid Sulaiman Alshallash, Hossam Mohamed Atta, Mamdouh Salem El-Gamal, Mohamed Mostafa Bakry, Mohammed Ibrahim Alghonaim, Salem Salah Salem","doi":"10.1515/gps-2023-0127","DOIUrl":"https://doi.org/10.1515/gps-2023-0127","url":null,"abstract":"Abstract In the current study, among 36 isolates, the bacterial strain M7 was selected as the highest cellulase producer and underwent traditional and molecular identification as Bacillus amyloliquefaciens M7. The productivity of the cellulase enzyme was optimized using the one-factor-at-a-time method. The optimization analysis showed that the best pH value for cellulase production was 7, in the presence of 1% bacterial inoculum size, 5 g·L −1 of carboxymethyl cellulose, 5 g·L −1 of peptone as nitrogen source, and incubation period of 24 h at a temperature of 35°C. The highest cellulase activity (64.98 U·mL −1 ) was obtained after optimizing conditions using BOX-Behnken Design. The maximum cellulase yield (75.53%) was obtained after precipitation by 60% ammonium sulfate, followed by purification by dialysis bag and Sephadex G-100 column chromatography. The purified cellulase enzyme was characterized by 6.38-fold enrichment, with specific activity (60.54 U·mg −1 ), and molecular weight of approximately 439.0 Da. The constituent of purified cellulase was 18 amino acids with high concentrations of 200 and 160 mg·L −1 for glycine and arginine, respectively. The purified cellulase enzyme was more stable and active at pH 8 and an incubation temperature of 50°C. The metal ions CaCl 2 , NaCl, and ZnO enhanced the activity of purified cellulase enzyme. Finally, the B. amyloliquefaciens M7-cellulase exhibits high bio-polishing activity of cotton fabrics with low weight loss (4.3%) which was attained at a maximum concentration (1%, v/v) for 90 min.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":"234 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135559969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Kugimiya, Kenji Asai, T. Harada, Y. Furukawa, M. Naito
Abstract Much effort was taken to elucidate how organic precursors appeared in early Earth, and attention was paid to two impact experiments: hypervelocity impacts by a propellant gun which simulated meteorite collides to Earth forming fatty acids and amino acids from inorganics, and micro-impacts by a planetary ball-mill which formed ammonium and acetic acid from inorganics. Our extended study on micro-impacts showed the formation of carboxylic acids, amines, and amino acids from Fe3C/Fe4N, carbon, and carbonates/nitrates by milling up to 30 h at 40 G. Fe(CO2)2·2H2O accelerated the formation a step further. Cu addition caused superior capability to form amines and amino acids. Two reaction fields were disclosed. In the impact field, the hydration of ferrous materials generated hydrogen which hydrogenated inorganic carbons to organics and ferrous transient materials and, in the maturing field, hydrogenated materials were then transformed into complex organics. Iron and CO2 were presumably the key components in the Hadean Ocean. Discussions on the mechano-chemical reaction were extended to serpentinization coupled with diastrophism of oceanic crusts and further led to a depiction that organic precursors were formed by micro-impacts and frictions of rocks and sands (like milling-balls) due to tremors in crusts. It provides a new path on how organic precursors were formed on the aqua-planet Earth.
{"title":"Micro-impact-induced mechano-chemical synthesis of organic precursors from FeC/FeN and carbonates/nitrates in water and its extension to nucleobases","authors":"K. Kugimiya, Kenji Asai, T. Harada, Y. Furukawa, M. Naito","doi":"10.1515/gps-2023-0020","DOIUrl":"https://doi.org/10.1515/gps-2023-0020","url":null,"abstract":"Abstract Much effort was taken to elucidate how organic precursors appeared in early Earth, and attention was paid to two impact experiments: hypervelocity impacts by a propellant gun which simulated meteorite collides to Earth forming fatty acids and amino acids from inorganics, and micro-impacts by a planetary ball-mill which formed ammonium and acetic acid from inorganics. Our extended study on micro-impacts showed the formation of carboxylic acids, amines, and amino acids from Fe3C/Fe4N, carbon, and carbonates/nitrates by milling up to 30 h at 40 G. Fe(CO2)2·2H2O accelerated the formation a step further. Cu addition caused superior capability to form amines and amino acids. Two reaction fields were disclosed. In the impact field, the hydration of ferrous materials generated hydrogen which hydrogenated inorganic carbons to organics and ferrous transient materials and, in the maturing field, hydrogenated materials were then transformed into complex organics. Iron and CO2 were presumably the key components in the Hadean Ocean. Discussions on the mechano-chemical reaction were extended to serpentinization coupled with diastrophism of oceanic crusts and further led to a depiction that organic precursors were formed by micro-impacts and frictions of rocks and sands (like milling-balls) due to tremors in crusts. It provides a new path on how organic precursors were formed on the aqua-planet Earth.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42051891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Black cumin (Nigella sativa) seed (BS) oil has high a peroxide value (PV) and acid value (AV). In this study, BS was incorporated with different levels of rosemary extracts as a natural antioxidant source before and after pretreatment by microwaves. Based on the oil extraction yield (33%), PV (8.4 meq O2 per kg oil), and AV (3.2 mg KOH per gram oil), the optimum condition was determined as microwave radiation for 120 s and, after that, moisturizing by the extract at 4% level. AV and PV were lower, and chlorophylls, carotenoids, polyphenols, thymoquinone, and tocopherols content were higher in oil extracted from pretreated BS than oil extracted from control BS. Reduction and loss of bioactive components occurred in oil samples during the 120 days of storage; however, it was higher in the control sample. There were no significant differences (p < 0.05) in the fatty acid composition of oil samples; however, oxidation and reduction of linoleic acid in the control oil sample were higher (4.2%) than the oil extracted from pretreated BS (2.5%). In conclusion, the oil extracted from the pretreated BS had higher oil extraction yield, high bioactive components, and stability; therefore, microwave radiation and incorporation of rosemary extract before oil extraction from BS is suggested.
{"title":"Quality of oil extracted by cold press from Nigella sativa seeds incorporated with rosemary extracts and pretreated by microwaves","authors":"Ali Ashrafi, S. Azadmard‐Damirchi, J. Hesari","doi":"10.1515/gps-2022-8149","DOIUrl":"https://doi.org/10.1515/gps-2022-8149","url":null,"abstract":"Abstract Black cumin (Nigella sativa) seed (BS) oil has high a peroxide value (PV) and acid value (AV). In this study, BS was incorporated with different levels of rosemary extracts as a natural antioxidant source before and after pretreatment by microwaves. Based on the oil extraction yield (33%), PV (8.4 meq O2 per kg oil), and AV (3.2 mg KOH per gram oil), the optimum condition was determined as microwave radiation for 120 s and, after that, moisturizing by the extract at 4% level. AV and PV were lower, and chlorophylls, carotenoids, polyphenols, thymoquinone, and tocopherols content were higher in oil extracted from pretreated BS than oil extracted from control BS. Reduction and loss of bioactive components occurred in oil samples during the 120 days of storage; however, it was higher in the control sample. There were no significant differences (p < 0.05) in the fatty acid composition of oil samples; however, oxidation and reduction of linoleic acid in the control oil sample were higher (4.2%) than the oil extracted from pretreated BS (2.5%). In conclusion, the oil extracted from the pretreated BS had higher oil extraction yield, high bioactive components, and stability; therefore, microwave radiation and incorporation of rosemary extract before oil extraction from BS is suggested.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42683349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Shater, Fayez M. Saleh, Zuhair M. Mohammedsaleh, H. Gattan, Bassam M. Al-ahmadi, N. Saeedi, M. Jalal, C. Panneerselvam
Abstract This study focused on testing manufactured silver nanoparticles (AgNPs) against the malaria pathogen Plasmodium falciparum and the malaria vector Anopheles stephensi using the plant filtrate from Madhuca longifolia. The M. longifolia leaf extracts were used to synthesize the AgNPs, which were then subjected to several physicochemical methods to determine their characteristics. To evaluate the effectiveness of the green produced AgNP therapy, the mosquitocidal activity of A. stephensi, cytotoxicity assay in Vero cells, and antiplasmodial activity assay were performed. The larval and pupal toxicity of biosynthesized AgNPs against the malarial vector A. stephensi is 90% promising in laboratory settings at low dosages (10 ppm). When tested on African green monkey kidney cells, the cytotoxic effect of biosynthesized materials was found to be inappropriately damaging up to 100 g·mL−1. The antimalarial efficacy of AgNPs was evaluated against P. falciparum strains. The parasites that were restrained by AgNPs at 100 ppm had the highest parasitemia restraint rate (80.4%). AgNPs then showed significant in vitro antimalarial activity against P. falciparum. Our findings suggested that the biosynthesized AgNPs might function as a novel antimalarial agent that is both safer for the environment and a barrier to infections spread by mosquitoes. Graphical abstract Illustration of AgNP synthesis in the fight against malaria.
{"title":"Green nanoarchitectonics of the silver nanocrystal potential for treating malaria and their cytotoxic effects on the kidney Vero cell line","authors":"A. Shater, Fayez M. Saleh, Zuhair M. Mohammedsaleh, H. Gattan, Bassam M. Al-ahmadi, N. Saeedi, M. Jalal, C. Panneerselvam","doi":"10.1515/gps-2022-8111","DOIUrl":"https://doi.org/10.1515/gps-2022-8111","url":null,"abstract":"Abstract This study focused on testing manufactured silver nanoparticles (AgNPs) against the malaria pathogen Plasmodium falciparum and the malaria vector Anopheles stephensi using the plant filtrate from Madhuca longifolia. The M. longifolia leaf extracts were used to synthesize the AgNPs, which were then subjected to several physicochemical methods to determine their characteristics. To evaluate the effectiveness of the green produced AgNP therapy, the mosquitocidal activity of A. stephensi, cytotoxicity assay in Vero cells, and antiplasmodial activity assay were performed. The larval and pupal toxicity of biosynthesized AgNPs against the malarial vector A. stephensi is 90% promising in laboratory settings at low dosages (10 ppm). When tested on African green monkey kidney cells, the cytotoxic effect of biosynthesized materials was found to be inappropriately damaging up to 100 g·mL−1. The antimalarial efficacy of AgNPs was evaluated against P. falciparum strains. The parasites that were restrained by AgNPs at 100 ppm had the highest parasitemia restraint rate (80.4%). AgNPs then showed significant in vitro antimalarial activity against P. falciparum. Our findings suggested that the biosynthesized AgNPs might function as a novel antimalarial agent that is both safer for the environment and a barrier to infections spread by mosquitoes. Graphical abstract Illustration of AgNP synthesis in the fight against malaria.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46901145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Biodegradable nanofilms from polyvinyl pyrrolidone (PVP), carboxymethyl cellulose (CMC), citric acid (CA), glycerol (G), and zinc oxide nanoparticles (ZnO-NPs) were prepared using different ZnO concentrations and different electron beam irradiation doses, enabling crosslinking formation. The prepared films were characterized by X-ray diffractometer, Fourier transform infrared spectroscopy, thermogravimetric analyser, and transmission electron microscopy. The swelling percentage of PVP:CMC films was ordered in the sequence of composition ratio 1:2 > 1:1 > 2:1. Results showed decrease in swelling capacity accompanied by increase in gelation percentage of (PVP:CMC)/CA/G)/ZnO nanofilms as the irradiation dose increased up to 20 kGy. The tensile strength of (PVP:CMC) films increased by the incorporation of ZnO-NPs and increasing the irradiation dose. The thermal stability of the prepared (PVP:CMC)/CA/G/ZnO nanofilms was enhanced as the irradiation dosage increased. The water vapour transmission rate of the irradiated films was decreased. The biodegradability of the prepared nanofilms was monitored during 16 weeks and it exceeded 65% weight loss from the original blank weight. Moreover, the nanofilms exhibit antimicrobial activity against fungi, Gram-negative, and Gram-positive bacteria. The broad antimicrobial activity spectrum of the prepared nanofilms increased as the concentration of ZnO-NPs increased. These results suggested that (PVP:CMC)/CA/G/ZnO nanofilms can serve as biodegradable materials in various applications characterized by antimicrobial activity.
{"title":"Biodegradation of synthetic PVP biofilms using natural materials and nanoparticles","authors":"H. Alzain, K. Hussein, I. Jabr, A. Alsubaie","doi":"10.1515/gps-2023-0011","DOIUrl":"https://doi.org/10.1515/gps-2023-0011","url":null,"abstract":"Abstract Biodegradable nanofilms from polyvinyl pyrrolidone (PVP), carboxymethyl cellulose (CMC), citric acid (CA), glycerol (G), and zinc oxide nanoparticles (ZnO-NPs) were prepared using different ZnO concentrations and different electron beam irradiation doses, enabling crosslinking formation. The prepared films were characterized by X-ray diffractometer, Fourier transform infrared spectroscopy, thermogravimetric analyser, and transmission electron microscopy. The swelling percentage of PVP:CMC films was ordered in the sequence of composition ratio 1:2 > 1:1 > 2:1. Results showed decrease in swelling capacity accompanied by increase in gelation percentage of (PVP:CMC)/CA/G)/ZnO nanofilms as the irradiation dose increased up to 20 kGy. The tensile strength of (PVP:CMC) films increased by the incorporation of ZnO-NPs and increasing the irradiation dose. The thermal stability of the prepared (PVP:CMC)/CA/G/ZnO nanofilms was enhanced as the irradiation dosage increased. The water vapour transmission rate of the irradiated films was decreased. The biodegradability of the prepared nanofilms was monitored during 16 weeks and it exceeded 65% weight loss from the original blank weight. Moreover, the nanofilms exhibit antimicrobial activity against fungi, Gram-negative, and Gram-positive bacteria. The broad antimicrobial activity spectrum of the prepared nanofilms increased as the concentration of ZnO-NPs increased. These results suggested that (PVP:CMC)/CA/G/ZnO nanofilms can serve as biodegradable materials in various applications characterized by antimicrobial activity.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48617339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract In this article, silicotungstic acid (STA)-loaded metal–organic framework (MOF)-derived composites (C-STA@ZrO2) were successfully synthesized by simple strategies. X-ray diffraction, Fourier transform infrared, scanning electron microscopy, energy-dispersive X-ray, N2 physisorption, UV-vis diffuse reflection spectroscopy, and X-ray photoelectron spectroscopy techniques were used to characterize the as-obtained composites. Intriguingly, C-STA@ZrO2 exhibits excellent photocatalytic performance, and rhodamine B (RhB) (40 mg·L−1) in water can be degraded to 93.9% after 120 min of irradiation. Moreover, various catalysts, catalyst dosage, and dye concentrations on RhB degradation were evaluated. Besides, the reusability of C-STA@ZrO2 was also investigated. This work may provide a new and significant guideline for exploring excellent performance of MOF-derived hybrid material for wastewater purification.
{"title":"Heteropolyacid-loaded MOF-derived mesoporous zirconia catalyst for chemical degradation of rhodamine B","authors":"Jialu Wang, Rongfei Yu, Zhenying Li, Fermion Yang, Linmin Luo, Dandan Wang, H. Cheng, Yutao Zhang, Qiuyun Zhang","doi":"10.1515/gps-2023-0005","DOIUrl":"https://doi.org/10.1515/gps-2023-0005","url":null,"abstract":"Abstract In this article, silicotungstic acid (STA)-loaded metal–organic framework (MOF)-derived composites (C-STA@ZrO2) were successfully synthesized by simple strategies. X-ray diffraction, Fourier transform infrared, scanning electron microscopy, energy-dispersive X-ray, N2 physisorption, UV-vis diffuse reflection spectroscopy, and X-ray photoelectron spectroscopy techniques were used to characterize the as-obtained composites. Intriguingly, C-STA@ZrO2 exhibits excellent photocatalytic performance, and rhodamine B (RhB) (40 mg·L−1) in water can be degraded to 93.9% after 120 min of irradiation. Moreover, various catalysts, catalyst dosage, and dye concentrations on RhB degradation were evaluated. Besides, the reusability of C-STA@ZrO2 was also investigated. This work may provide a new and significant guideline for exploring excellent performance of MOF-derived hybrid material for wastewater purification.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47765489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Iron–carbon microelectrolysis was employed to remove phosphorus in this study. The efficiency, mechanism, influence factors, and feasibility of actual wastewater were investigated. The results showed that iron–carbon microelectrolysis had an excellent phosphorus removal ability. When the initial concentration of PO 4 3 − {text{PO}}_{4}^{3-} –P was 19.44 mg·L−1, after 120 min reaction time, the remaining PO 4 3 − {text{PO}}_{4}^{3-} –P in wastewater was 4.65 mg·L−1, and the removal rate was 76.05%. The precipitate formed in the reaction was mainly ferric phosphate (FePO4), which had a high recovery value. There was a linear correlation between initial phosphorus concentrations and phosphorus removal velocity. As to actual wastewater, 88.37 ± 0.44%, 89.78 ± 1.88%, and 94.23 ± 0.16% phosphorus removal rates were achieved in the influent of municipal wastewater treatment plant, effluent of secondary sedimentation tank, and actual high salinity wastewater, respectively, after 120 min reaction time. This study provides a new method for phosphorus removal and recovery from wastewater. Graphical abstract Iron–carbon microelectrolysis has an excellent phosphorus removal ability. The precipitate formed in the reaction was mainly ferric phosphate (FePO4) which had a high recovery value.
{"title":"Phosphorus removal by iron–carbon microelectrolysis: A new way to achieve phosphorus recovery","authors":"Chao Wang, Chang-Geun Wang, Mei Xu, Fanke Zhang","doi":"10.1515/gps-2022-8120","DOIUrl":"https://doi.org/10.1515/gps-2022-8120","url":null,"abstract":"Abstract Iron–carbon microelectrolysis was employed to remove phosphorus in this study. The efficiency, mechanism, influence factors, and feasibility of actual wastewater were investigated. The results showed that iron–carbon microelectrolysis had an excellent phosphorus removal ability. When the initial concentration of PO 4 3 − {text{PO}}_{4}^{3-} –P was 19.44 mg·L−1, after 120 min reaction time, the remaining PO 4 3 − {text{PO}}_{4}^{3-} –P in wastewater was 4.65 mg·L−1, and the removal rate was 76.05%. The precipitate formed in the reaction was mainly ferric phosphate (FePO4), which had a high recovery value. There was a linear correlation between initial phosphorus concentrations and phosphorus removal velocity. As to actual wastewater, 88.37 ± 0.44%, 89.78 ± 1.88%, and 94.23 ± 0.16% phosphorus removal rates were achieved in the influent of municipal wastewater treatment plant, effluent of secondary sedimentation tank, and actual high salinity wastewater, respectively, after 120 min reaction time. This study provides a new method for phosphorus removal and recovery from wastewater. Graphical abstract Iron–carbon microelectrolysis has an excellent phosphorus removal ability. The precipitate formed in the reaction was mainly ferric phosphate (FePO4) which had a high recovery value.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47986854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Emad Ali, M. Hadj-Kali, S. Mokraoui, R. Khan, Meshal Aldawsari, M. Boumaza
Abstract The energy efficiency of an absorption–desorption system for carbon dioxide capture from flue gas utilizing methyltriphenylphosphonium bromide-monoethanolamine (MEA) deep eutectic solvent is investigated in this article. According to the results, when the working pressure of the absorber column increases, the process becomes significantly exergy deficient, with an exergy loss of 7.63 MW compared to 5.7 MW for a normal MEA process. The majority of the exergy deficit is due to flue gas compression effort, which accounts for 99% of the total process exergy. The process’s exergy shortfall can be improved by lowering the absorber pressure from 10 to 3 atm, lowering the carbon dioxide removal efficiency from 90% to 60%, and increasing the solvent-to-gas ratio from 075 to 7.05. Furthermore, the incorporation of an energy recovery device could allow for an 80–90% reduction in the energy consumed by the gas compressor when running at 10 atm, from 5.7 to 1.2 MJ‧kg CO2 −1. With this adjustment, the deep eutectic solvent-based process can match or outperform the corresponding aqueous alkanolamine solvent-based process in terms of exergy destruction and specific energy consumption.
{"title":"Exergy analysis of a conceptual CO2 capture process with an amine-based DES","authors":"Emad Ali, M. Hadj-Kali, S. Mokraoui, R. Khan, Meshal Aldawsari, M. Boumaza","doi":"10.1515/gps-2022-8085","DOIUrl":"https://doi.org/10.1515/gps-2022-8085","url":null,"abstract":"Abstract The energy efficiency of an absorption–desorption system for carbon dioxide capture from flue gas utilizing methyltriphenylphosphonium bromide-monoethanolamine (MEA) deep eutectic solvent is investigated in this article. According to the results, when the working pressure of the absorber column increases, the process becomes significantly exergy deficient, with an exergy loss of 7.63 MW compared to 5.7 MW for a normal MEA process. The majority of the exergy deficit is due to flue gas compression effort, which accounts for 99% of the total process exergy. The process’s exergy shortfall can be improved by lowering the absorber pressure from 10 to 3 atm, lowering the carbon dioxide removal efficiency from 90% to 60%, and increasing the solvent-to-gas ratio from 075 to 7.05. Furthermore, the incorporation of an energy recovery device could allow for an 80–90% reduction in the energy consumed by the gas compressor when running at 10 atm, from 5.7 to 1.2 MJ‧kg CO2 −1. With this adjustment, the deep eutectic solvent-based process can match or outperform the corresponding aqueous alkanolamine solvent-based process in terms of exergy destruction and specific energy consumption.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46325027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：