Current Research in Green and Sustainable Chemistry最新文献_第4页

Retraction notice to “Novel advancements in green and sustainable polymeric nanocomposites coatings” [Curr. Res. Green Sustain. Chem. 4 (2021) 100173] “绿色和可持续聚合物纳米复合材料涂层的新进展”的撤回通知[Curr]。绿色维持。化学，4 (2021)100173]

Q2 Materials Science

Current Research in Green and Sustainable Chemistry

Pub Date : 2025-01-01 DOI: 10.1016/j.crgsc.2025.100482

Christopher Igwe Idumah

引用次数: 0

Cerium (IV) sulfate tetrahydrate as a reusable heterogeneous Lewis acid catalyst: solvent-free and green synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-dione scaffolds 四水合硫酸铈作为可重复使用的非均相Lewis酸催化剂：1h -吡唑[1,2-b]酞嗪-5,10-二酮支架的无溶剂绿色合成

Q2 Materials Science

Current Research in Green and Sustainable Chemistry

Pub Date : 2025-01-01 DOI: 10.1016/j.crgsc.2025.100484

Farzaneh Mohamadpour

An ecologically benign method for the synthesis of 1H-pyrazolo [1,2-b]phthalazine-5,10-dione scaffolds without the use of solvents is presented. It employs cerium (IV) sulfate tetrahydrate (Ce(SO₄)₂·4H₂O) as a reusable heterogeneous Lewis acid catalyst. The reactions conclude significantly more quickly and produce products with impressive yields. This environmentally friendly technique employs safe settings. It is inexpensive, efficient, and simple to use. Finally, a solvent is not required. Furthermore, after four cycles, the highly efficient and eco-friendly Ce(SO₄)₂·4H₂O remains rather stable and does not alter or lose its effectiveness. As a consequence, it is very advantageous for both cost-cutting and environmental protection during industrial operations. While the range of yields (79–92 %, with an average of 87.05 %) is fairly constant, the range of reaction times is fairly short (40–65 min, with an average of 48.52 min). It's also crucial that this method can provide yield excellent yields and a rapid rate of reaction even when used with a variety of functional groups that give or take electrons. The results suggest that, given relatively simple and effective reaction conditions, this technique is a productive one-pot procedure.

提出了一种不使用溶剂合成1h -吡唑[1,2-b]邻苯二嗪-5,10-二酮支架的生态良性方法。采用四水合硫酸铈（Ce(SO4)2·4H2O）作为可重复使用的非均相路易斯酸催化剂。反应结束的速度大大加快，产物的产率令人印象深刻。这种环保技术采用安全设置。它便宜、高效、使用简单。最后，不需要溶剂。此外，经过四个循环后，高效环保的Ce(SO4)2·4H2O保持相当稳定，不会改变或失去其有效性。因此，在工业操作过程中，它对降低成本和保护环境都是非常有利的。反应时间较短（40 ~ 65 min，平均48.52 min），收率范围（79 ~ 92%，平均87.05%）较稳定。同样重要的是，这种方法可以提供优异的产率和快速的反应速度，即使与各种官能团一起使用，也可以给或取电子。结果表明，在相对简单和有效的反应条件下，该技术是一锅高效的工艺。

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引用次数: 0

Green molten salt template–Assisted synthesis of defect-rich carbon aerogels with abundant pyridinic-N sites for enhanced oxygen reduction electrocatalysis 绿色熔盐模板辅助合成具有丰富吡啶- n位的富缺陷碳气凝胶用于增强氧还原电催化

Q2 Materials Science

Current Research in Green and Sustainable Chemistry

Pub Date : 2025-01-01 DOI: 10.1016/j.crgsc.2025.100496

Huaming Xie , Chuanjiang Pan , Ying Lei , Voranuch Thongpool , Weraporn Pivsa-Art , Sumonman Niamlang

Developing highly efficient metal-free electrocatalysts for oxygen reduction reaction (ORR) are pivotal for advancing sustainable fuel cell technology. An approach utilizing a green molten salt template to synthesize pyridinic-nitrogen (N)-enriched carbon aerogels (CA) with precisely engineered edge defects has been developed. CA was prepared by polymerizing chitosan gels embedded with potassium chloride/sodium chloride templates followed by controlled pyrolysis. Transmission electron microscopy, nitrogen adsorption–desorption analysis, X-ray photoelectron spectroscopy, and Raman characterization showed that the optimized catalyst, CA-3-900, possessed unique structural characteristics, including hierarchical porous structures with a high specific surface area (257 m² g⁻¹), high pyridinic-N content (32.48 %), and abundant edge defects. This is ascribed to the dual regulation of molten salt templates on porous structures and N configurations during carbonization. These structural merits resulted in exceptional ORR performance, including a high half-wave potential (0.78 V vs. reversible hydrogen electrode) and kinetic current density (2.81 mA cm⁻² at 0.8 V). Notably, the improvement in ORR activity was mainly associated with the synergistic effect of edge-defective domains and rich pyridinic-N sites, as well as hierarchical porous channels favorable for catalytic site accessibility and mass/charge transport. Density functional theory (DFT) calculations revealed that pyridinic-N coupled with edge defects lowers the ORR overpotential, confirming the strong electronic coupling between pyridinic-N and adjacent defect sites effectively enhances O₂ adsorption, intermediate conversion, and overall reaction kinetics. This study establishes a synthetic strategy for precisely manipulating N species and defects related to intrinsic activity in biomass-derived carbon catalysts, providing fundamental insights into defect-mediated catalytic enhancement mechanisms.

开发用于氧还原反应的高效无金属电催化剂是推进可持续燃料电池技术的关键。提出了一种利用绿色熔盐模板合成具有精确工程边缘缺陷的富吡啶氮(N)碳气凝胶的方法。以壳聚糖凝胶包埋氯化钾/氯化钠模板，经控制热解制备CA。透射电子显微镜、氮吸附-解吸分析、x射线光电子能谱和拉曼表征表明，优化后的催化剂CA-3-900具有独特的结构特征，具有高比表面积（257 m2 g−1）、高吡啶- n含量（32.48%）和丰富的边缘缺陷。这是由于炭化过程中熔盐模板对多孔结构和N构型的双重调节。这些结构优点导致了卓越的ORR性能，包括高半波电位（与可逆氢电极相比为0.78 V）和动态电流密度（0.8 V时为2.81 mA cm - 2）。值得注意的是，ORR活性的提高主要与边缘缺陷结构域和丰富的吡啶- n位点的协同作用以及有利于催化位点可达性和质量/电荷传输的分层多孔通道有关。密度泛函理论（DFT）计算表明，吡啶- n与边缘缺陷的耦合降低了ORR过电位，证实了吡啶- n与相邻缺陷位点之间的强电子耦合有效地增强了O2吸附、中间转化和整体反应动力学。本研究建立了一种精确操纵生物质衍生碳催化剂中N物种和与内在活性相关的缺陷的合成策略，为缺陷介导的催化增强机制提供了基础见解。

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引用次数: 0

Dual-phase bio-carbon coatings for mild steel protection: A green approach using sugarcane bagasse and eggshell waste 用于低碳钢保护的双相生物碳涂层：利用蔗渣和蛋壳废料的绿色方法

Q2 Materials Science

Current Research in Green and Sustainable Chemistry

Pub Date : 2025-01-01 DOI: 10.1016/j.crgsc.2025.100498

S.G. Ganapathy Kumaresh, M. Ananthkumar

Corrosion significantly compromises the durability of reinforced concrete structures, leading to progressive strength loss and eventual structural failure. This study aims to develop an eco-friendly, organic carbon-based coating for mild steel using carbon derived from sugarcane bagasse and eggshell, with the objective of enhancing corrosion resistance. The findings suggest that a synergistic combination of amorphous and crystalline carbon phases improves the protective properties of the coating. Various coating formulations were prepared, including 100 % sugarcane bagasse (SG100 %), 100 % eggshell (ES100 %), and composite blends of 25 % eggshell + 75 % sugarcane bagasse (ES25 %+SG75 %), 50 % eggshell + 50 % sugarcane bagasse (ES50 %+SG50 %), and 75 % eggshell + 25 % sugarcane bagasse (ES75 %+SG25 %). Coated mild steel strips were immersed in 3.5 % NaCl contaminated simulated concrete pore solution (SCPS) to mimic a saline environment, and in 0.5 M HCl to represent an acidic medium. Corrosion behavior was evaluated through potentiodynamic polarization studies, supported by physicochemical characterization, mechanical testing, and COMSOL simulation. Among the tested formulations, the ES50 %+SG50 % composite exhibited superior corrosion resistance, with corrosion rates of 0.04 mm/year in SCPS and 1.06 mm/year in HCl. Furthermore, no visible morphological or structural degradation was observed after 2000 test cycles, confirming the coating's stability and effectiveness as a corrosion-resistant barrier for reinforced concrete applications.

腐蚀严重损害钢筋混凝土结构的耐久性，导致强度逐渐丧失和最终的结构破坏。本研究旨在开发一种环保的有机碳基涂层，用于低碳钢，使用从蔗渣和蛋壳中提取的碳，目的是提高耐腐蚀性。研究结果表明，非晶碳相和结晶碳相的协同组合提高了涂层的保护性能。制备了多种包衣配方，包括100%蔗渣（sg100%）、100%蛋壳（es100%）、25%蛋壳+ 75%甘蔗甘蔗渣（es25% + sg75%）、50%蛋壳+ 50%甘蔗甘蔗渣（es50% + sg50%）、75%蛋壳+ 25%甘蔗甘蔗渣（es75% + sg25%）。将涂层低碳钢条浸入3.5% NaCl污染的模拟混凝土孔隙溶液（SCPS）中模拟盐水环境，并浸入0.5 M HCl中代表酸性介质。腐蚀行为通过动电位极化研究进行评估，并辅以物理化学表征、力学测试和COMSOL模拟。在所测试的配方中，es50% + sg50%复合材料表现出优异的耐腐蚀性，在SCPS和HCl中的腐蚀速率分别为0.04 mm/年和1.06 mm/年。此外，在2000个测试周期后，没有观察到明显的形态或结构退化，证实了该涂层作为钢筋混凝土应用的耐腐蚀屏障的稳定性和有效性。

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引用次数: 0

Microwave-assisted distillation of ylang-ylang flowers: A sustainable and efficient approach for essential oil extraction 依兰花的微波辅助蒸馏：一种可持续、高效的精油提取方法

Q2 Materials Science

Current Research in Green and Sustainable Chemistry

Pub Date : 2025-01-01 DOI: 10.1016/j.crgsc.2025.100495

Achmet Said Mohamed, Laurent Lemée

Microwave-assisted distillation (MAD) was compared with wood-heated distillation (WHD) and laboratory-scale distillation (LD) for the production of ylang-ylang essential oil. The yield of total essential oil collected by MAD was 29 % higher than WHD and 23 % higher than LD, while the distillation time was significantly reduced. Indeed, the oil was recovered within 40 min with 2.7 % yield using MAD, whereas LD and WHD required 19 h. The quality of the collected fractions was EXTRA SUP (ES), EXTRA (E), grade I, II and III according to density, ester index and refractive index. MAD produced 81 % high quality ES and E, 16 % grade I and 2 % low quality grade III fractions. WHD and LD produced approximately 15 % ES, 15 % grade I and 70 % grade III fractions. At the molecular level, 15 compounds were identified by GC-MS according to the French ISO standard. The higher amount of odoriferous light oxygenated compounds and lower amount of sesquiterpenic hydrocarbons in ES and Grade I fractions collected with MAD confirmed its high quality. Moreover, the Grade III fraction obtained with MAD showed a high content of oxygenated compounds compared to LD and WHD.

对微波辅助蒸馏法（MAD）与木材加热蒸馏法（WHD）和实验室蒸馏法（LD）生产依兰精油进行了比较。蒸馏法的总精油得率比蒸馏法高29%，比蒸馏法高23%，蒸馏法的时间显著缩短。事实上，使用MAD在40分钟内以2.7%的收率回收了油，而LD和WHD则需要19小时。根据密度，酯指数和折射率，收集的馏分的质量为EXTRA SUP (ES), EXTRA (E)， I级，II级和III级。MAD生产了81%的优质ES和E， 16%的I级和2%的低质量III级馏分。WHD和LD分别产生约15%的ES、15%的I级和70%的III级馏分。在分子水平上，根据法国ISO标准，用GC-MS鉴定了15个化合物。用MAD提取的ES级馏分和I级馏分中有气味的轻氧化合物含量较高，倍半萜烯烃含量较低，证实了其高质量。此外，与LD和WHD相比，MAD获得的III级馏分显示出高含氧化合物含量。

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引用次数: 0

Co-pyrolysis of pinewood biomass and used engine oil waste: A sustainable approach to diesel-like biofuel production 松木生物质和废机油的共热解：一种可持续的柴油类生物燃料生产方法

Q2 Materials Science

Current Research in Green and Sustainable Chemistry

Pub Date : 2025-01-01 DOI: 10.1016/j.crgsc.2025.100499

Mokhtar A. Babatabar, Ahmad Tavasoli

The growing demand for sustainable energy and the environmental challenges associated with fossil fuel dependence have intensified the search for efficient waste-to-fuel pathways. In this study, the co-pyrolysis of acid-washed pinewood biomass (APW) with used engine oil (UEO) is shown to exhibit a distinct synergistic interaction (a 1.66 % yield enhancement compared to the theoretical additive value), where non-linear hydrogen transfer from hydrocarbon-rich UEO fragments stabilizes oxygenated intermediates derived from APW. This unique effect not only enhances the overall liquid yield but also improves the hydrocarbon quality of the resulting bio-oil. Experiments were carried out in a fixed-bed reactor, and the operating parameters—temperature (400–600 °C), reaction time (20–60 min), carrier gas flow rate (5–25 mL/min), and UEO/feedstock ratio (10–50 wt%)—were optimized using response surface methodology (RSM). The highest bio-oil yield of 71.33 wt% was obtained at 520 °C, 25 min, 20 mL/min, and 50 wt% UEO. GC-MS and elemental analysis revealed substantial deoxygenation and hydrocarbon enrichment (70.23 wt%), yielding a fuel comparable to conventional diesel. These findings underscore the potential of APW–UEO co-pyrolysis as an innovative and sustainable approach to valorizing mixed waste streams into diesel-like biofuels.

对可持续能源日益增长的需求以及对化石燃料的依赖所带来的环境挑战，促使人们加紧寻找有效的废物转化为燃料的途径。在这项研究中，酸洗松木生物质（APW）与旧发动机油（UEO）共热解显示出明显的协同作用（与理论添加剂值相比，产率提高了1.66%），其中富含碳氢化合物的UEO片段的非线性氢转移稳定了源自APW的含氧中间体。这种独特的效果不仅提高了总体产液率，而且改善了所得生物油的碳氢化合物质量。实验在固定床反应器中进行，并利用响应面法（RSM）对操作参数（温度400-600°C）、反应时间（20-60 min）、载气流速（5-25 mL/min）和UEO/进料比（10-50 wt%）进行优化。在520℃，25 min, 20 mL/min， 50 wt% UEO条件下，生物油得率最高，为71.33 wt%。GC-MS和元素分析显示，该燃料经过了大量脱氧和碳氢化合物富集（70.23 wt%），与传统柴油相当。这些发现强调了APW-UEO共热解作为一种创新和可持续的方法，将混合废物流转化为类似柴油的生物燃料的潜力。

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引用次数: 0

Phytochemistry and antimicrobial potential of off-grade white pepper (Piper nigrum L.) essential oils extracted using microwave-assisted hydro-distillation (MAHD) 微波辅助水蒸馏法提取劣质白胡椒精油的植物化学和抑菌潜力

Q2 Materials Science

Current Research in Green and Sustainable Chemistry

Pub Date : 2025-01-01 DOI: 10.1016/j.crgsc.2025.100450

Sarifah Nurjanah , Sekar Widyaningrum , Bambang Nurhadi , S. Rosalinda , Rienoviar , Nandang Permadi , Euis Julaeha

White pepper generally used as spice, has the main component of piperine which gives it a spicy taste and essential oils that determine its aroma. In general trade, only good pepper is traded, while off-grade that does not meet quality requirements will be wasted. This study aims to investigate the effect of extraction methods of essential oils from off-grade white pepper and the potential of its antimicrobial activity against pathogenic bacteria. The results showed that off-grade white pepper essential oils (WPEO) could be isolated by using microwave-assisted hydro-distillation (MAHD) and hydro-distillation (HD). Essential oils produced had physicochemical characteristics in accordance with the ISO 3061:2008 standard. Specifically, MAHD off-grade, MAHD grade-A, and HD WPEO had 13, 11, and 15 components, respectively. The chemical composition showed that all the extracted EO contained the main components of caryophyllene, (+)-3-carene, d-limonene, and β-pinene. The methods showed the extraction ability of monoterpene hydrocarbons by MAHD and sesquiterpene hydrocarbons by HD. In comparison, microwave-extracted essential oils had a higher limonene, while off-grade WPEO contained (+)-3-carene. The FTIR results confirmed the content of the components in the three WPEO that were investigated. All essential oils had antibacterial activity against E. coli and S. typhimurium with zone inhibition values of MAHD off-grade WPEO, MAHD grade-A WPEO, and HD off-grade WPEO against E. coli at 15.44 ± 1.68 mm, 6.72 ± 0.59 mm, and 10.17 ± 0.29 mm, as well as against S. typhimurium at 8.72 ± 1.25 mm, 8.06 ± 0.86 mm, and 8.83 ± 0.87 mm, respectively.

白胡椒通常用作香料，其主要成分胡椒碱使其具有辛辣的味道，精油决定其香气。在一般的贸易中，只交易好的辣椒，而不符合质量要求的次品会被浪费掉。本研究旨在探讨不同提取方法对下品白胡椒精油的影响及其对病原菌的抑菌活性。结果表明，微波辅助水蒸馏（MAHD）和水蒸馏（HD）两种方法均可从白胡椒中分离出劣质精油（WPEO）。生产的精油具有符合ISO 3061:2008标准的物理化学特性。其中，MAHD off-grade、MAHD grade-A和HD WPEO分别含有13、11和15个成分。化学成分分析表明，所提取的精油主要成分为石竹烯、(+)-3-蒈烯、d-柠檬烯和β-蒎烯。实验结果表明，MAHD法和HD法对单萜化合物和倍半萜化合物的萃取能力较好。相比之下，微波提取精油含有较高的柠檬烯，而劣质WPEO含有(+)-3-芳烃。FTIR结果证实了所研究的三种WPEO的成分含量。所有精油对大肠杆菌和鼠伤寒沙门氏菌均有抑菌活性，MAHD下标WPEO、MAHD a级WPEO和HD下标WPEO对大肠杆菌的区抑值分别为15.44±1.68 mm、6.72±0.59 mm和10.17±0.29 mm，对鼠伤寒沙门氏菌的区抑值分别为8.72±1.25 mm、8.06±0.86 mm和8.83±0.87 mm。

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引用次数: 0

Exploration of cosmetic bioactive compounds from cocoa bean shell using polyol-based microwave-assisted extraction: Cytotoxicity, anti-tyrosinase, and anti-melanogenesis properties 利用多元醇为基础的微波辅助萃取技术从可可豆壳中提取化妆品生物活性化合物：细胞毒性、抗酪氨酸酶和抗黑素生成特性

Q2 Materials Science

Current Research in Green and Sustainable Chemistry

Pub Date : 2025-01-01 DOI: 10.1016/j.crgsc.2025.100454

Sasakorn Pattanakitjaroenchai , Puthita Pitsawong , Nuntawat Khat-Udomkiri

Cocoa bean shells, a major byproduct of the cocoa industry, hold significant potential for value-added applications, particularly in cosmetics. The aim of this study was to develop a sustainable, eco-friendly extraction process for bioactive compounds with skin-whitening properties using microwave-assisted extraction (MAE) and polyol-based solvents, a novel approach in cocoa bean shell valorization. Polyols, such as propylene glycol (PG), were compared to ethanol (EtOH) for their efficiency in extracting bioactive compounds. The influence of polyol type, polyol concentration, solid-to-liquid ratio, temperature, and extraction time on total phenolic content (TPC), total flavonoid content (TFC), and tyrosinase inhibitory activity was systematically evaluated. This study demonstrated that PG, at optimal conditions (60 % w/v, 1:50 solid-to-liquid ratio, 100 °C, 30-min extraction), significantly enhanced TPC (59.57 ± 1.33 mg GAE/g sample), TFC (242.24 ± 2.95 mg QE/g sample), and tyrosinase inhibition (4.75 ± 0.35 mg KAE/g sample) compared to EtOH. LC-QQQ analysis identified quercetin, catechin, and trigonelline as key contributors to tyrosinase inhibition and melanin content reduction, with PG extracts demonstrating superior functional activity despite similar quercetin levels in both solvents. Comparative cytotoxicity, anti-melanogenic assays, and cellular tyrosinase inhibition further confirmed the enhanced safety and efficacy of PG extracts over conventional ethanol extracts, positioning them as a novel green solvent system for developing effective skin-whitening active ingredients in cosmetic formulations.

可可豆壳是可可工业的主要副产品，具有巨大的增值应用潜力，特别是在化妆品中。本研究的目的是开发一种可持续的、环保的提取工艺，利用微波辅助提取（MAE）和多元醇溶剂提取具有皮肤美白特性的生物活性化合物，这是可可豆壳增值的一种新方法。多元醇，如丙二醇（PG）与乙醇（EtOH）在提取生物活性化合物方面的效率进行了比较。系统评价了多元醇类型、多元醇浓度、料液比、提取温度和提取时间对总酚含量（TPC）、总黄酮含量（TFC）和酪氨酸酶抑制活性的影响。本研究表明，在最佳条件下（60% w/v， 1:50固液比，100°C，提取30 min）， PG与EtOH相比，显著提高了TPC（59.57±1.33 mg GAE/g样品），TFC（242.24±2.95 mg QE/g样品）和酪氨酸酶抑制（4.75±0.35 mg KAE/g样品）。LC-QQQ分析发现槲皮素、儿茶素和葫芦巴碱是酪氨酸酶抑制和黑色素含量降低的关键因素，尽管在两种溶剂中槲皮素水平相似，但PG提取物显示出更好的功能活性。比较细胞毒性、抗黑素测定和细胞酪氨酸酶抑制进一步证实了PG提取物比传统乙醇提取物具有更高的安全性和有效性，将其定位为一种新型的绿色溶剂系统，用于开发化妆品配方中有效的皮肤美白活性成分。

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引用次数: 0

Selective flotation of silicates from phosphates using Tetrabutyl Ammonium Chloride as a green collector 用四丁基氯化铵作为绿色捕收剂从磷酸盐中选择性浮选硅酸盐

Q2 Materials Science

Current Research in Green and Sustainable Chemistry

Pub Date : 2025-01-01 DOI: 10.1016/j.crgsc.2025.100461

Ashraf Alsafasfeh

This study introduces Tetrabutyl Ammonium Chloride (TBAC) as a novel selective collector for silicates in the reverse flotation of apatite-quartz model sample. Zeta potential measurements, contact angle analysis, FTIR, and X-ray fluorescence spectroscopy (XPS) were employed to investigate reagent adsorption at mineral-water interfaces. FTIR analysis revealed the appearance of new peaks corresponding to C–H and C–N stretching in TBAC-treated quartz, but not in apatite, indicating TBAC's preferential adsorption on quartz surfaces. XPS analysis further supported FTIR results; a distinct N 1s peak at 401.5 eV was observed on TBAC-treated quartz, while no such peak appeared on apatite, confirming the absence of significant interaction. Zeta potential measurements showed a larger shift in surface charge for quartz than for apatite after TBAC treatment, particularly at higher pH levels, with a notable shift of +16.28 mV at pH 11 for quartz, compared to only +0.4 mV for apatite. Contact angle measurements also demonstrated that TBAC significantly increased quartz hydrophobicity—reaching values above 115°—while apatite showed minimal change. Flotation tests were conducted to evaluate the performance of TBAC as collector for apatite and quartz. In single mineral flotation, the highest quartz recovery (97 %) was achieved at pH 11 with a TBAC dosage of 150 g/ton while the apatite recovery was reduced to 31.6 %. The binary-mineral system showed a higher recovery of apatite with a commercial quartz collector at 52.4 %, compared to just 25.3 % when TBAC was used. Comparative tests with a conventional DA collector revealed that apatite recovery was significantly higher with DA (52.4 %) than with TBAC (25.3 %), emphasizing TBAC's limited interaction with phosphate minerals and its potential utility for silicate removal in reverse flotation processes.

介绍了四丁基氯化铵（TBAC）作为一种新型的选择性捕收剂在磷灰石-石英模型样品反浮选中的应用。采用Zeta电位测量、接触角分析、FTIR和x射线荧光光谱（XPS）研究试剂在矿物质-水界面的吸附。FTIR分析显示，在TBAC处理的石英中出现了与C-H和C-N拉伸相对应的新峰，而在磷灰石中没有，表明TBAC在石英表面的优先吸附。XPS分析进一步支持FTIR结果；经tbac处理的石英在401.5 eV处有明显的n1s峰，而磷灰石没有出现n1s峰，证实了两者之间没有明显的相互作用。Zeta电位测量结果显示，经过TBAC处理后，石英的表面电荷变化幅度大于磷灰石，特别是在较高的pH值下，石英在pH值11时的表面电荷变化幅度为+16.28 mV，而磷灰石的表面电荷变化幅度仅为+0.4 mV。接触角测量也表明，TBAC显著提高了石英的疏水性，达到115°以上的值，而磷灰石的变化很小。通过浮选试验，评价了TBAC作为磷灰石和石英捕收剂的性能。单矿物浮选中，当TBAC用量为150 g/t时，pH为11时石英回收率最高，达97%，磷灰石回收率降至31.6%。使用商用石英捕收剂，二元矿物体系的磷灰石回收率高达52.4%，而使用TBAC时，磷灰石回收率仅为25.3%。与传统DA捕收剂的对比试验表明，DA的磷灰石回收率（52.4%）明显高于TBAC(25.3%)，强调了TBAC与磷矿物的有限相互作用及其在反浮选过程中去除硅酸盐的潜在用途。

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引用次数: 0

Optimizing reaction configurations of sequential batch reactor (SBR) for nitrogen removal from wastewater 序批式反应器（SBR）脱氮反应构型优化

Q2 Materials Science

Current Research in Green and Sustainable Chemistry

Pub Date : 2025-01-01 DOI: 10.1016/j.crgsc.2025.100493

Uma Sakthivel PhD (Guest Teacher) , Sukumar P

Biological nutrient removal in SBRs requires the optimized sequencing of aerobic and anoxic phases to balance nitrification, denitrification and energy use. This study uses GPS-X v8.1 to simulate a 212 m³ SBR treating synthetic domestic wastewater (COD 2,500–3,500 mg L⁻¹; TN ≈ 60 mg N L⁻¹) under a 24-h cycle (1 h fill, 20 h react, 2 h settle/decant, 1 h idle) with DO setpoint of 2.0 mgL⁻¹. Eleven operational strategies—including pre-anoxic, post-anoxic, intermittent aeration and their combinations—were evaluated. The model was calibrated and validated against independent plant data (R² ≥ 0.85; NSE ≥0.70). A combined pre-anoxic + post-anoxic + intermittent aeration configuration delivered the best trade-off, achieving 87.1 % TN removal and 88.6 % TP removal while maintaining BOD and COD removal >89 % and a moderate energy penalty. Sensitivity and multi-objective optimization (TN removal vs energy) identified SRT, internal recirculation ratio and aerobic fraction as dominant controls and produced Pareto-optimal aeration schedules for practical implementation. These results provide actionable guidance for energy-efficient SBR operation to meet stringent nutrient targets.

sbr生物脱氮需要优化好氧和缺氧相的顺序，以平衡硝化、反硝化和能量利用。本研究使用GPS-X v8.1模拟了一个212 m3 SBR处理合成生活废水（COD 2500 - 3500 mgL−1;TN≈60 mg N L−1），24小时循环（1小时填充，20小时反应，2小时沉淀/倒液，1小时空转），DO设值为2.0 mgL−1。评估了包括缺氧前、缺氧后、间歇曝气及其组合在内的11种操作策略。根据独立的植物数据对模型进行校准和验证（R2≥0.85;NSE≥0.70）。组合缺氧前+缺氧后+间歇曝气配置提供了最佳的权衡，实现了87.1%的TN去除率和88.6%的TP去除率，同时保持了BOD和COD去除率>； 89%和适度的能量损失。灵敏度和多目标优化（TN去除率与能量）确定SRT、内部再循环比和有氧分数为主要控制因素，并为实际实施制定了帕累托最优曝气计划。这些结果为SBR的节能运行提供了可操作的指导，以达到严格的营养指标。

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