Sustainable Chemistry One World最新文献

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The impact of supplemental UV-B radiation on growth and biochemical constituents in Vigna unguiculata L. Walp and Pisum sativum L. 补充紫外线-B 辐射对 Vigna unguiculata L. Walp 和 Pisum sativum L. 的生长和生化成分的影响

Sustainable Chemistry One World

Pub Date : 2024-11-10 DOI: 10.1016/j.scowo.2024.100033

S. Ven Vanitha Jenishree, A. Doss, N. Ahamed Kabir

This study investigates the impact of UV-B radiation on plant growth and biochemical constituents in Vigna unguiculata and Pisum sativum plants grown from non-irradiated and UV-B-irradiated seeds. The results show that plants grown from UV-B-irradiated seeds for 30, 60, and 90 minutes experienced significant reductions in plant height, root length, and shoot length compared to non-irradiated seeds. Additionally, plants with UV-B-irradiated seeds had less fresh and dry weight. The decline was particularly pronounced in plants exposed to UV-B radiation for 90 minutes. Chlorophyll a, b, and total chlorophyll (a+b) dropped significantly in plants grown from seeds exposed to UV-B radiation for 30, 60, and 90 minutes. The reduction was particularly significant in plants exposed to UV-B radiation for 90 minutes. Moreover, plants with higher levels of total free phenolics and tannins had higher contents compared to non-irradiated seeds. The level of total free phenols is higher in irradiated seeds of P. sativum than V. unguiculata. The plants exposed to UV-B radiation for 90 minutes showed a noticeable increase.

本研究调查了紫外线-B 辐射对未受辐射种子和受紫外线-B 辐射种子培育的 Vigna unguiculata 和 Pisum sativum 植物生长和生化成分的影响。结果表明，与未经过紫外线-B 照射的种子相比，经过紫外线-B 照射 30 分钟、60 分钟和 90 分钟的种子培育出的植株在株高、根长和芽长方面都有显著下降。此外，使用紫外线-B 照射种子培育的植物的鲜重和干重都有所减少。在紫外线-B 辐射 90 分钟的植物中，这种下降尤为明显。叶绿素 a、b 和总叶绿素（a+b）在经紫外线-B 辐射 30、60 和 90 分钟的种子培育出的植物中显著下降。在紫外线-B 辐射 90 分钟的植物中，叶绿素 a、b 和总叶绿素（a+b）的下降尤为明显。此外，与未经过辐照的种子相比，总游离酚和单宁含量较高的植株具有更高的含量。经辐照的 P. sativum 种子中总游离酚的含量高于 V. unguiculata。接受紫外线-B 辐射 90 分钟的植株的游离酚含量明显增加。

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引用次数: 0

Predicting total alkalinity in saline water using machine learning: A case study with RapidMiner 利用机器学习预测盐水中的总碱度：使用 RapidMiner 的案例研究

Sustainable Chemistry One World

Pub Date : 2024-11-10 DOI: 10.1016/j.scowo.2024.100032

Tue Duy Nguyen , Quynh Thi Phuong Le , Man Thi Truc Doan , Ha Manh Bui

This study investigates the use of machine learning models to predict total alkalinity (TA) based on chloride concentration (Cl^-), pH and temperature. Utilizing RapidMiner's Auto Mode, six machine learning models were applied to a dataset of 111 water samples from the Nhà Bè River. The models' performances were evaluated using Root Mean Square Error (RMSE) and R² metrics, with the Generalized Linear Model (GLM), Support Vector Machine (SVM) and Deep Learning models identified as the top performers. Correlation and coefficient analyses revealed that Cl^- had the most significant impact on TA prediction, followed by temperature and pH. These findings underscore the effectiveness of machine learning in water quality monitoring, presenting a cost-effective alternative to traditional chemical analysis methods.

本研究调查了机器学习模型在氯化物浓度（Cl-）、pH 值和温度基础上预测总碱度（TA）的应用情况。利用 RapidMiner 的自动模式，将 6 个机器学习模型应用于 111 个来自那不勒斯河的水样数据集。使用均方根误差（RMSE）和 R² 指标对模型的性能进行了评估，发现广义线性模型（GLM）、支持向量机（SVM）和深度学习模型的性能最佳。相关性和系数分析表明，Cl- 对 TA 预测的影响最大，其次是温度和 pH 值。这些发现强调了机器学习在水质监测中的有效性，为传统的化学分析方法提供了一种具有成本效益的替代方法。

引用次数: 0

Visible light photocatalytic reduction of toxic chemical organophosphate monocrotophos using reduced graphene oxide derived from bamboo leaves 利用从竹叶中提取的还原氧化石墨烯在可见光下光催化还原有毒化学品有机磷久效磷

Sustainable Chemistry One World

Pub Date : 2024-11-05 DOI: 10.1016/j.scowo.2024.100031

Pukrambam Dipak, UPS Gahlaut, Y.C. Goswami

In this study, graphene oxide (GO) was synthesized from waste bamboo leaves using a pyrolysis and ultra-sonication technique. UV–visible spectroscopy revealed a prominent absorption peak at 230 nm, while Raman spectroscopy confirmed the presence of characteristic D-band (1340 cm⁻¹) and G-band (1596 cm⁻¹). XRD analysis showed a peak at 11.5°, corresponding to a lattice spacing of 3 nm, and SEM/TEM imaging demonstrated the formation of multi-layered graphene sheets. The synthesized GO was evaluated for the photocatalytic degradation of the organophosphate pesticide monocrotophos under visible light. At a concentration of 25 mg/L, graphene exhibited a removal efficiency of 98 % with a degradation rate of 0.036 ppm/min, following a Langmuir isotherm and pseudo-first-order kinetic model. The significance of this study lies in the potential environmental application, offering an economical and sustainable solution for the decontamination of pesticide-contaminated water sources. The method could contribute significantly for reducing environmental pollution and addressing global water safety challenges.

本研究采用热解和超声波技术从废弃竹叶中合成了氧化石墨烯（GO）。紫外-可见光谱显示了 230 纳米处的显著吸收峰，拉曼光谱则证实了 D 波段（1340 厘米-¹）和 G 波段（1596 厘米-¹）的存在。XRD 分析表明在 11.5° 处有一个峰值，相当于 3 纳米的晶格间距，SEM/TEM 成像显示形成了多层石墨烯薄片。对合成的 GO 在可见光下光催化降解有机磷农药久效磷的效果进行了评估。在浓度为 25 mg/L 时，石墨烯的去除率为 98%，降解速率为 0.036 ppm/min，遵循朗缪尔等温线和伪一阶动力学模型。这项研究的意义在于其潜在的环境应用价值，它为净化受农药污染的水源提供了一种经济、可持续的解决方案。该方法可为减少环境污染和应对全球水安全挑战做出重大贡献。

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引用次数: 0

Copper(II) isonicotinate metal-organic framework for reusable adsorption of salmeterol from wastewater 用于从废水中重复吸附沙美特罗的异烟酸铜（II）金属有机框架

Sustainable Chemistry One World

Pub Date : 2024-10-25 DOI: 10.1016/j.scowo.2024.100030

Usman Armaya’u , Muttaqa Uba Zango , Marinah Mohd Ariffin , Wan Mohd Afiq Wan Mohd Khalik , Hanis Mohd Yusoff , Zakariyya Uba Zango , Haliru Aivada Kadir , Haruna Adamu , Abdurrashid Haruna , Basem E. Keshta

This study investigates the adsorption of salmeterol (SMT) from aqueous solutions using a novel nano-sized copper-based metal-organic framework (Cu-MOF). The Cu-MOF was synthesized under solvent-free conditions, enhancing its environmental sustainability. Key parameters such as adsorbent dosage, initial SMT concentration, temperature, and pH were systematically evaluated to optimize adsorption performance. The results demonstrate the exceptional adsorption capacity of the Cu-MOF, reaching a maximum of 400 mg/g within 50 minutes of contact time under optimal conditions of 4 mg Cu-MOF, 50 mg/L SMT, and pH 11. The kinetic and isotherm studies revealed that the pseudo-second-order and Langmuir models exhibited superior fitting to the experimental data, as evidenced by their exceptional R² values of 0.999 and 0.999, minimal RMSE values of 0.034 and 0.001, and significantly lower AIC values of −45.77 and −129.17 for the kinetic and isotherm models, respectively. Thermodynamic analysis confirmed the exothermic and spontaneous nature of the adsorption process. Moreover, the Cu-MOF exhibited excellent reusability, maintaining its adsorption efficiency over six consecutive cycles. Therefore, these findings highlight the potential of Cu-MOF as a promising and sustainable adsorbent for effectively removing salmeterol from wastewater.

本研究利用一种新型纳米级铜基金属有机框架（Cu-MOF）研究了水溶液对沙美特罗（SMT）的吸附。Cu-MOF 是在无溶剂条件下合成的，从而增强了其环境可持续性。对吸附剂用量、初始 SMT 浓度、温度和 pH 值等关键参数进行了系统评估，以优化吸附性能。结果表明，在 4 毫克 Cu-MOF、50 毫克/升 SMT 和 pH 值为 11 的最佳条件下，Cu-MOF 的吸附容量在 50 分钟的接触时间内达到了 400 毫克/克。动力学和等温线研究表明，伪二阶模型和 Langmuir 模型与实验数据的拟合度较高，其 R² 值分别为 0.999 和 0.999，RMSE 值分别为 0.034 和 0.001，而动力学模型和等温线模型的 AIC 值分别为-45.77 和-129.17，明显较低。热力学分析证实了吸附过程的放热和自发性质。此外，Cu-MOF 表现出极佳的重复利用率，在连续六个循环中都能保持其吸附效率。因此，这些研究结果凸显了 Cu-MOF 作为一种有前景且可持续的吸附剂从废水中有效去除沙美特罗的潜力。

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引用次数: 0

Recent advances in green chemistry approaches for pharmaceutical synthesis 用于药物合成的绿色化学方法的最新进展

Sustainable Chemistry One World

Pub Date : 2024-10-19 DOI: 10.1016/j.scowo.2024.100029

Sageer Ahmad , Rahul Jaiswal , Reetu Yadav , Sarita Verma

Green chemistry has revolutionized pharmaceutical synthesis by promoting sustainability and reducing environmental impact. This review aims to present the recent advancements in the green chemistry approaches that include the principles, novel methods and the application of the methodologies in brief. Beginning with the discussion of the general research background and significance, the review addresses principles of green chemistry such as atom economy, the reduction of waste generation, and the applications of sustainable feedstocks. Closeness to environment solvents choice and catalytic processes are highlighted as well as the priority of uses of bio-catalysis and chemo-enzymatic strategies to reactions improvement and sustainability. Case studies including in this review demonstrate the practical application of green chemistry principles in real-world pharmaceutical manufacturing, showcasing successful implementation and the environmental benefits achieved. It also discusses present day methods like microwave and ultrasound assisted synthesis, flow chemistry, and eco-friendly extraction techniques, making reaction better and using less energy. Examples of good practice for industrial application are described and the possible drawbacks, such as economical, technical, and legal problems, are also discussed. Other aspects of green chemistry, including the scalability of the concepts along with focuses of catalysis, solvents, and reuses of wastes are described herein. Therefore, this review discussed the positive changes brought by green chemistry to the pharmaceutical industry and also pointed out new directions and potential difficulties on this road.

绿色化学通过促进可持续发展和减少对环境的影响，彻底改变了药物合成。本综述旨在简要介绍绿色化学方法的最新进展，包括原理、新方法和方法的应用。综述从讨论一般研究背景和意义开始，论述了绿色化学的原则，如原子经济、减少废物产生和可持续原料的应用。重点介绍了溶剂选择和催化过程与环境的密切关系，以及生物催化和化学酶策略在改善反应和可持续性方面的优先应用。本综述中的案例研究展示了绿色化学原理在现实世界制药生产中的实际应用，展示了成功的实施和取得的环境效益。本综述还讨论了微波和超声波辅助合成、流动化学和生态友好型萃取技术等现代方法，使反应更好，能耗更低。书中介绍了工业应用的良好实践范例，还讨论了可能存在的弊端，如经济、技术和法律问题。此外，还介绍了绿色化学的其他方面，包括概念的可扩展性以及催化、溶剂和废物再利用的重点。因此，本综述讨论了绿色化学给制药业带来的积极变化，同时也指出了这条道路上的新方向和潜在困难。

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引用次数: 0

Recycling lithium-ion batteries: A review of current status and future directions 回收锂离子电池：现状与未来方向综述

Sustainable Chemistry One World

Pub Date : 2024-10-11 DOI: 10.1016/j.scowo.2024.100027

Martin C. Etude , Alexander I. Ikeuba , Chigoziri N. Njoku , Emmanuel Yakubu , Henry C. Uzoma , Chukwuebuka E. Mgbemere , Daniel I. Udunwa

Lithium-ion batteries (LIBs) have become a widely adopted energy source for various electrical devices, ranging from small devices to large machines, such as cell phones, and electric vehicles (EVs). The increasing number of EVs, and other electrical devices has led to the enormous amount of discarded spent LIBs into the landfill. The amount of LIB waste generated in 2019 alone from EVs was 500,000 tons. This amount is expected to reach 8,000,000 tons by 2040. Globally, only 5 % of discarded spent LIBs is presently being recycled. The need to recycle LIBs stems from the desire to conserve raw materials, and save cost. Also, LIBs comprise heavy metals (Ni, Li, Co, Cu, Mn, Fe, and Al), and hazardous chemicals, which cause serious environmental hazards and threaten human lives; thus, pointing out the need to recycle LIBs. This work reviewed different recycling techniques and, the latest technological advancements in pretreatment methods, hydrometallurgy, pyrometallurgy, and direct recycling methods. Also, future perspectives and prospects are provided herein.

锂离子电池（LIB）已成为从小型设备到大型机器（如手机和电动汽车）等各种电气设备广泛采用的能源。随着电动汽车和其他电气设备数量的不断增加，大量废弃的废锂离子电池被丢弃到垃圾填埋场。仅在 2019 年，电动汽车产生的废锂电池就达 50 万吨。预计到 2040 年，这一数量将达到 800 万吨。目前，全球仅有 5% 的废弃废锂电池得到回收利用。之所以需要回收锂离子电池，是因为人们希望节约原材料和成本。此外，锂离子电池含有重金属（镍、锂、钴、铜、锰、铁和铝）和有害化学物质，会对环境造成严重危害，并威胁到人类的生命安全；因此，有必要对锂离子电池进行回收利用。这项研究回顾了不同的回收技术，以及预处理方法、湿法冶金、火法冶金和直接回收方法的最新技术进展。此外，本文还介绍了未来的展望和前景。

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引用次数: 0

Investigation of the utilization of oat pomace and acid whey in technical scale succinic acid fermentation including downstream processing 燕麦渣和酸性乳清在技术规模琥珀酸发酵（包括下游加工）中的利用研究

Sustainable Chemistry One World

Pub Date : 2024-10-10 DOI: 10.1016/j.scowo.2024.100028

Corina Kleps , Roland Schneider , Joachim Venus , Daniel Pleissner

In this study, succinic acid fermentation using acid whey and oat pomace was investigated at 30 L technical scale. Acid whey and oat pomace were mixed in a ratio of 3:1 (v/w) and around 20 g L⁻¹ succinic acid was obtained after 72 hours of fermentation using Actinobacillus succinogenes. The productivities after 24, 48 and 72 hours were 0.46, 0.35, and 0.27 g L⁻¹ h⁻¹ and the overall yield was 0.77 g succinic acid per g total sugars consumed. Acid whey introduced lactic acid and several cat- and anions, which were removed from fermentation broth using a simplified downstreaming processing including filtration and repeated evaporation and crystallization. After three cycles of evaporation and crystallization all organic acids (lactic, acetic, and formic acids) as well as most of the salt ions were removed. From the initial 749 g succinic acid 53 % with a purity of >99 % was recovered.

本研究使用酸性乳清和燕麦渣进行了 30 升技术规模的琥珀酸发酵。酸性乳清和燕麦渣以 3:1 的比例（v/w）混合，使用琥珀酸放线菌发酵 72 小时后，可获得约 20 g L-1 的琥珀酸。24、48 和 72 小时后的生产率分别为 0.46、0.35 和 0.27 g L-1 h-1，总产量为每克总糖消耗 0.77 克琥珀酸。酸性乳清引入了乳酸和一些阴离子，通过简化的下游处理（包括过滤、反复蒸发和结晶）将其从发酵液中去除。经过三个循环的蒸发和结晶，所有有机酸（乳酸、乙酸和甲酸）以及大部分盐离子都被去除。从最初的 749 克琥珀酸中回收了 53%，纯度为 99%。

引用次数: 0

Synthesis of carboxamide sensors for neurotoxic Cu2+ ions in safer green solvents and reaction conditions 在更安全的绿色溶剂和反应条件下合成神经毒性 Cu2+ 离子的羧酰胺传感器

Sustainable Chemistry One World

Pub Date : 2024-09-16 DOI: 10.1016/j.scowo.2024.100026

Nidhi Sharma , Ashu Gulati

Green amidation is simple and efficient for the synthesis of drugs and biomolecules. Green chemistry synthesis is always directed at achieving sustainability. Neurotoxins are critical targets for metabolic medicines to capture and eliminate from the body. Copper is a fatal brain neurotoxin. The C1-C4 probes were synthesized by reacting 3-coumarin carboxylic acid with 4-phenyl butyl amine, N-ethyl benzylamine, 4-dodecylaniline, and 3,3 - diphenyl propylamine in polar green solvent ethanol. These were tested for their metal-binding ability in environmentally safe aqueous acetonitrile with hyphenated techniques. The probes show significant binding with Cu²⁺ ions in the aqueous acetonitrile. The ascending order of anti-neurotoxin action is C3>C4>C2>C1 seen in the Limit of detection (Lod) values. Also, molecular mechanics (MM2) descriptors firmly point towards their use as drugs.

绿色酰胺化是一种简单高效的药物和生物大分子合成方法。绿色化学合成始终以实现可持续发展为目标。神经毒素是新陈代谢药物捕捉和清除体内毒素的重要目标。铜是一种致命的脑神经毒素。通过在极性绿色溶剂乙醇中使 3-香豆素羧酸与 4-苯基丁胺、N-乙基苄胺、4-十二烷基苯胺和 3,3 - 二苯基丙胺反应，合成了 C1-C4 探针。这些探针在环境安全的乙腈水溶液中通过连用技术进行了金属结合能力测试。这些探针在乙腈水溶液中与 Cu2+ 离子有明显的结合。从检出限（Lod）值来看，抗神经毒素作用的递增顺序为 C3>C4>C2>C1。此外，分子力学（MM2）描述符也坚定地表明它们可用作药物。

引用次数: 0

Green and Reflux method synthesis of CeO2/rGO for their characterization and Photodegradation of dye 用绿色和回流法合成 CeO2/rGO 以确定其特性并实现染料的光降解

Sustainable Chemistry One World

Pub Date : 2024-09-11 DOI: 10.1016/j.scowo.2024.100024

M.C. Roopa , S. Thirumala , Sharadadevi Kallimani , B.M. Manohara

In this study, cerium oxide (CeO₂) was synthesized using a green and eco-friendly solution combustion method with lemongrass as the fuel source. The synthesis process was simple and environmentally friendly, leveraging a straightforward reflux technique to prepare the CeO₂/rGO composite. The resulting CeO₂ and CeO₂/rGO composite was characterized using various analytical techniques, including XRD, FE-SEM, FTIR, EDX, UV-Vis, XPS, and BET analysis. The photocatalytic performance of the CeO₂/rGO composite was evaluated through the degradation of Methyl Violet (MV) dye, demonstrating a remarkable photocatalytic efficiency with approximately 99 % degradation following a first-order reaction kinetics. The half-life period (t₁/₂) of the degradation process was determined to be 19.01 minutes, and the rate constant (k) was calculated to be 0.03971 min⁻¹. The study also explored various factors affecting the photocatalytic activity, including pH levels, dye concentration, light source, and the amount of catalyst used. Additionally, scavenger studies were performed to identify the reactive species involved, and the total organic carbon (TOC) removal efficiency was evaluated. The reusability of the CeO₂/rGO catalyst was also investigated, demonstrating its potential for sustainable and effective application in environmental remediation processes.

本研究以柠檬草为燃料源，采用绿色环保的溶液燃烧法合成了氧化铈（CeO2）。合成过程简单而环保，采用直接回流技术制备 CeO2/rGO 复合材料。利用各种分析技术，包括 XRD、FE-SEM、FTIR、EDX、UV-Vis、XPS 和 BET 分析，对所制备的 CeO2 和 CeO2/rGO 复合材料进行了表征。通过降解甲基紫（MV）染料评估了 CeO2/rGO 复合材料的光催化性能，结果表明其光催化效率非常高，按照一阶反应动力学，降解率约为 99%。降解过程的半衰期（t₁/₂）被测定为 19.01 分钟，速率常数（k）被计算为 0.03971 min-¹。研究还探讨了影响光催化活性的各种因素，包括 pH 值、染料浓度、光源和催化剂用量。此外，还进行了清除剂研究，以确定所涉及的反应物种，并评估了总有机碳 (TOC) 的去除效率。此外，还对 CeO2/rGO 催化剂的可重复使用性进行了研究，证明了其在环境修复过程中可持续有效应用的潜力。

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引用次数: 0

A review on exploring the potential of liquid hydrogen as a fuel for a sustainable future 探讨液氢作为可持续未来燃料的潜力综述

Sustainable Chemistry One World

Pub Date : 2024-08-27 DOI: 10.1016/j.scowo.2024.100022

Alexander I. Ikeuba , Christopher U. Sonde , Destiny Charlie , Brian E. Usibe , Monsurat Raimi , Anthony I. Obike , Thomas O. Magu

The world’s fossil fuel dependence has led to a significant increase in emissions of carbon leading to environmental pollution/degradation. To conserve our fast-dilapidating environment, the search for sustainable and clean energy sources has become a top priority. Hydrogen is adjudged to be among the most likely alternative sources of energy for a sustainable future. Amongst the several forms of hydrogen, Liquid hydrogen has attracted considerable attention as a positive option owing to its high energy density, zero-emission characteristics, and potential to be produced from renewable sources. This review explores the differences between gaseous hydrogen and liquid hydrogen, using of liquid hydrogen as an energy carrier and fuel cell, focusing on its potential to transform energy storage and transportation. This work also deals with reviews on the different liquefaction technologies applicable in the manufacture of liquid hydrogen based on efficiency.

世界对化石燃料的依赖导致碳排放量大幅增加，造成环境污染/退化。为了保护我们迅速恶化的环境，寻找可持续的清洁能源已成为当务之急。氢被认为是最有可能实现可持续未来的替代能源之一。在几种形式的氢气中，液态氢因其高能量密度、零排放特性以及利用可再生资源生产的潜力而备受关注。本综述探讨了气态氢和液态氢的区别、液态氢作为能源载体和燃料电池的用途，重点关注其改变能源储存和运输的潜力。此外，本研究还根据效率审查了适用于液氢制造的不同液化技术。

引用次数: 0

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