Sustainable Chemistry and Pharmacy最新文献

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Carbonation behavior and performance optimization of anhydrous phosphogypsum-based concrete: synergistic effect of admixtures 无水磷石膏基混凝土的碳化行为及性能优化:外加剂的协同效应
IF 5.5 2区 化学
Sustainable Chemistry and Pharmacy Pub Date : 2025-07-26 DOI: 10.1016/j.scp.2025.102132
Yonghui Zhao , Xuhong Zhou , Fangjie Cheng , Qishi Zhou , Zilin Fang
{"title":"Carbonation behavior and performance optimization of anhydrous phosphogypsum-based concrete: synergistic effect of admixtures","authors":"Yonghui Zhao ,&nbsp;Xuhong Zhou ,&nbsp;Fangjie Cheng ,&nbsp;Qishi Zhou ,&nbsp;Zilin Fang","doi":"10.1016/j.scp.2025.102132","DOIUrl":"10.1016/j.scp.2025.102132","url":null,"abstract":"<div><div>During the service life of concrete, carbonation is an inevitable phenomenon. This study innovatively developed a novel anhydrous phosphogypsum-based concrete (APGC) using anhydrous phosphogypsum (APG) as the primary cementitious material, synergistically combined with granulated blast furnace slag (GBFS), ordinary Portland cement (OPC), and carbide slag (CS), addressing the low utilization rate of industrial solid wastes. The carbonation performance was systematically evaluated through multi-scale characterizations (FTIR, XRD, SEM-EDS, MIP), accompanied by the first integrated environmental risk assessment of heavy metal leaching and carbon emissions for such materials. APGC exhibits exceptional high-fluidity (spread flow diameter up to 690 mm), high-strength (28-day compressive strength 78.6 MPa), and superior water resistance (softening coefficient 0.92, water absorption rate 0.74 %), enabled by GBFS-OPC synergies enhancing matrix density and alkalinity. Carbonation led to the decomposition of ettringite and the decalcification of C-S-H gel in APGC, as well as an increase in the proportion of harmful pores and porosity, resulting in APGC deterioration. A Fick's first law-based carbonation prediction model shows &lt;10 % error, enabling service life prediction of APGC. Carbonation disrupted the chemical speciation of heavy metals in APGC, leading to increased leaching of heavy metals., yet APGC reduces carbon emissions by 49.8 % compared to conventional C60 concrete. The optimal mix design (30 % GBFS, 2 % CS, ≥5 % OPC) is expected to reduce the use of traditional Portland cement, pioneering exploration of APGC carbonation behavior and filling the research gap in phosphogypsum-based concrete durability.</div></div>","PeriodicalId":22138,"journal":{"name":"Sustainable Chemistry and Pharmacy","volume":"47 ","pages":"Article 102132"},"PeriodicalIF":5.5,"publicationDate":"2025-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144711525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A challenged spectral overlap resolution of oromucosal spray: A comparative study of PCR, PLS, and siPLS algorithms with sustainability assessment 口腔粘膜喷雾的光谱重叠分辨率受到挑战:PCR, PLS和siPLS算法与可持续性评估的比较研究
IF 5.5 2区 化学
Sustainable Chemistry and Pharmacy Pub Date : 2025-07-25 DOI: 10.1016/j.scp.2025.102126
Maryam A. Bakr , Samah S. Abbas , Maha A. Hegazy , Amr M. Badawey , Sally S. El-Mosallamy
{"title":"A challenged spectral overlap resolution of oromucosal spray: A comparative study of PCR, PLS, and siPLS algorithms with sustainability assessment","authors":"Maryam A. Bakr ,&nbsp;Samah S. Abbas ,&nbsp;Maha A. Hegazy ,&nbsp;Amr M. Badawey ,&nbsp;Sally S. El-Mosallamy","doi":"10.1016/j.scp.2025.102126","DOIUrl":"10.1016/j.scp.2025.102126","url":null,"abstract":"<div><div>Three novel multivariate spectrophotometric methods namely Principal Component Regression (PCR), Partial Least Squares (PLS), and synergy intervals Partial Least Squares (siPLS) were developed for the successful resolution of spectrally overlapping signals of a quaternary mixture of benzocaine, benzydamine hydrochloride, cetalkonium chloride, and benzydamine hydrochloride official impurity (Impurity C). This work represents the first reported application of chemometric techniques to resolve this specific quaternary mixture in both its pure form and co-formulated dosage form.</div><div>The methods demonstrated good linearity and accuracy in analyzing the aforementioned compounds in laboratory-prepared mixtures and oromucosal spray. Linearity of the developed methods was found to be (3.00–15.00, 1.50–7.50 and 1.50–3.50 μg/mL) for benzocaine, benzydamine hydrochloride, and benzydamine hydrochloride impurity C (1-benzyl-1H-indazol-3-ol), correspondingly. The developed models were validated using internal and external data sets. Furthermore, statistical analysis did not reveal any substantial differences between our findings and those of the reported methods.</div><div>A comprehensive sustainability assessment, employing metrics such as Analytical Eco-Scale (AES), Green Analytical Procedure Index (GAPI), Analytical GREEnness metric (AGREE), Red-Green-Blue model (RGB12), and Blue Applicability Grade Index (BAGI), highlighted the advantages of the developed methods over conventional HPLC with respect to cost, time, and environmental impact. The developed methods achieved the following scores of 79, 0.69, 89.4, and 70 for AES, AGREE, RGB12, and BAGI, respectively.</div><div>These findings suggest that the proposed multivariate assisted spectrophotometric methods could offer a valuable alternative to HPLC for rapid and efficient quality control analysis of these compounds in pharmaceutical formulations.</div></div>","PeriodicalId":22138,"journal":{"name":"Sustainable Chemistry and Pharmacy","volume":"47 ","pages":"Article 102126"},"PeriodicalIF":5.5,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144704084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Green and high-efficiency sulfuric acid leaching strategy for enhanced recovery of rubidium and potassium from biotite 绿色高效硫酸浸出策略提高黑云母中铷和钾的回收率
IF 5.5 2区 化学
Sustainable Chemistry and Pharmacy Pub Date : 2025-07-24 DOI: 10.1016/j.scp.2025.102128
Yinbo Song , Zhengwei Han , Geji Kuo , Hui Zhong , Zhiguo He
{"title":"Green and high-efficiency sulfuric acid leaching strategy for enhanced recovery of rubidium and potassium from biotite","authors":"Yinbo Song ,&nbsp;Zhengwei Han ,&nbsp;Geji Kuo ,&nbsp;Hui Zhong ,&nbsp;Zhiguo He","doi":"10.1016/j.scp.2025.102128","DOIUrl":"10.1016/j.scp.2025.102128","url":null,"abstract":"<div><div>The extraction of rubidium (Rb) and potassium (K) from biotite faces challenges due to the mineral's structural stability and high energy consumption in conventional methods. Herein, an environmentally friendly ion-exchange synergistic oxidation process was developed to enhance sulfuric acid leaching efficiency. By introducing sodium ions and magnesium ions as exchange agents and hydrogen peroxide as an oxidant, the layered structure of biotite was preserved while facilitating rubidium ion release. Key parameters, including sulfuric acid concentration, additive dosage, oxidant concentration, liquid-to-solid ratio, and temperature, were systematically optimized. Under optimal conditions (1.5 mol/L H<sub>2</sub>SO<sub>4</sub>, 0.4 g/g MgSO<sub>4</sub>, 0.2 g/g Na<sub>2</sub>SO<sub>4</sub>, 1 mol/L H<sub>2</sub>O<sub>2</sub>, L/S ratio 5 mL/g, 90 °C), a maximum Rb extraction efficiency of 95.2 % was achieved. By employing a 4-stage countercurrent leaching sequence followed by 3-stage countercurrent washing, the Rb<sup>+</sup> concentration was ultimately increased to 1250 mg/L. Kinetic analysis revealed a two-stage mechanism: the initial 0–2 h phase was chemically controlled with an activation energy of 17.5 kJ/mol, while the subsequent 2–7 h phase transitioned to diffusion control with an activation energy of 16.5 kJ/mol. Multi-stage countercurrent leaching further concentrated rubidium ions to 1250 mg/L. DFT Calculations and structural analyses (XRD, FTIR, FIR, SEM-EDS, XPS) confirmed intact silicate frameworks and successful Na<sup>+</sup>/Mg<sup>2+</sup> interlayer exchange, avoiding mineral decomposition. This strategy significantly reduces acid consumption, eliminates nitrate pollution, and demonstrates a promising and sustainable approach for the extraction of Rb and K from biotite.</div></div>","PeriodicalId":22138,"journal":{"name":"Sustainable Chemistry and Pharmacy","volume":"47 ","pages":"Article 102128"},"PeriodicalIF":5.5,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144694955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessment of biosolids produced in Northern Greece applied to agricultural soils as phytoprotective agents 希腊北部生产的生物固体作为植物保护剂应用于农业土壤的评估
IF 5.5 2区 化学
Sustainable Chemistry and Pharmacy Pub Date : 2025-07-24 DOI: 10.1016/j.scp.2025.102111
Christos Steppas , Ioannis Giannakis , Evangelia E. Golia , Sotiria G. Papadimou , Vasiliki Manakou , Christina Emmanouil , Anastasia Lagopodi , Athanasios Kungolos
{"title":"Assessment of biosolids produced in Northern Greece applied to agricultural soils as phytoprotective agents","authors":"Christos Steppas ,&nbsp;Ioannis Giannakis ,&nbsp;Evangelia E. Golia ,&nbsp;Sotiria G. Papadimou ,&nbsp;Vasiliki Manakou ,&nbsp;Christina Emmanouil ,&nbsp;Anastasia Lagopodi ,&nbsp;Athanasios Kungolos","doi":"10.1016/j.scp.2025.102111","DOIUrl":"10.1016/j.scp.2025.102111","url":null,"abstract":"<div><div>In the context of circular economy, biosolids from three WWTPs (WWTP1, 2 and 3) in Northern Greece were tested for their metal content (pseudo-total and leachate content) and their ecotoxicity on <em>D. magna</em> neonates, as part of a risk assessment strategy. Results showed metal concentration much lower than the limits of Greek legislation for use in agriculture. Low but non-negligible toxicity on <em>D. magna</em> was detected, irrespective of biosolids’ origin or seasonality. Biosolids from WWTP1 were applied against Verticillium wilt of pepper plants caused by the fungus <em>Verticillium dahliae</em>. These biosolids had undergone additional processing in relation to previous research in 2018–2019, but this did not alleviate <em>D. magna</em> toxicity whilst it affected metal leachate in the following ways: in the EN-12457-2 leaching test, Ni and Zn content were increased in relation to previous research; Cu leaching was variable, while Pb, Cd (and Hg) remained undetectable. A correlation between <em>D. magna</em> toxicity and Cr concentration in the leachates was observed but it did not reach statistical significance. Regarding their ability to act as phytoprotective agents, biosolids incorporation at 2 % w/w reduced wilt severity caused by <em>V. dahliae</em> on pepper. Similar results have previously been observed for Fusarium root rot of tomato. Plant growth characteristics were not enhanced in healthy plants. However, several growth parameters characteristics were promoted in the presence of the pathogen as also noted in our previous research. The results encourage research into novel agronomic uses of biosolids, including their use to produce novel plant growth boosters.</div></div>","PeriodicalId":22138,"journal":{"name":"Sustainable Chemistry and Pharmacy","volume":"47 ","pages":"Article 102111"},"PeriodicalIF":5.5,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144694957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sustainable adsorbent selection through green design: Linking water treatment performance, environmental impacts and scale-up scenarios 通过绿色设计选择可持续吸附剂:将水处理性能、环境影响和规模化方案联系起来
IF 5.5 2区 化学
Sustainable Chemistry and Pharmacy Pub Date : 2025-07-24 DOI: 10.1016/j.scp.2025.102130
Gopa Nandikes, Anh H. Nguyen, Seungdae Oh
{"title":"Sustainable adsorbent selection through green design: Linking water treatment performance, environmental impacts and scale-up scenarios","authors":"Gopa Nandikes,&nbsp;Anh H. Nguyen,&nbsp;Seungdae Oh","doi":"10.1016/j.scp.2025.102130","DOIUrl":"10.1016/j.scp.2025.102130","url":null,"abstract":"<div><div>Activated carbon (AC) is a highly versatile adsorbent utilized for water and wastewater treatment applications due to its strong adsorptive properties. However, the widely used conventional coal–derived ACs pose significant environmental concerns, necessitating the search for sustainable alternatives. The present study evaluates pyrolysis retention time optimized pine bark residue–derived adsorbent (PBA), for its adsorption capacity and environmental sustainability. The PBA featured a large specific surface area (506.88 m<sup>2</sup>/g), well–developed micro and mesopores, and surfaces functionalized with aromatic C=O and C=H, leading to the rapid removal of humic acid (<em>q</em><sub><em>max</em></sub> −9.81 mg/g). Cradle–to–gate life cycle assessment (LCA) was conducted with mass–based and the novel application–based functional units to fully explore the sustainability of the synthesized PBAs. In addition to conventional midpoint impact categories (TRACI), this study quantified the cumulative energy demand, endpoint impacts (human health, ecosystem degradation, and resource depletion), associated with PBA production. The study also critically quantifies the environmental impacts associated with the conventional adsorbents and benchmark PBA against its counterparts. Furthermore, the comprehensive scale–up framework provides valuable insights into identifying the full potential of AC production at pilot and industrial scales. In this aspect, the synchronous study involving both experimental analysis and LCA modeling establishes a structured and measurable framework for sustainable adsorbent development.</div></div>","PeriodicalId":22138,"journal":{"name":"Sustainable Chemistry and Pharmacy","volume":"47 ","pages":"Article 102130"},"PeriodicalIF":5.5,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144694956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation of calcium sulfate hemihydrate whiskers from chlor-alkali brine sludge and industrial waste under normal pressure 常压下以氯碱卤水污泥和工业废水为原料制备半水硫酸钙晶须
IF 5.5 2区 化学
Sustainable Chemistry and Pharmacy Pub Date : 2025-07-22 DOI: 10.1016/j.scp.2025.102120
Liya Wu , Enxue Gai , Bei Wang , Xvdong Jiang , Zongzheng Yang
{"title":"Preparation of calcium sulfate hemihydrate whiskers from chlor-alkali brine sludge and industrial waste under normal pressure","authors":"Liya Wu ,&nbsp;Enxue Gai ,&nbsp;Bei Wang ,&nbsp;Xvdong Jiang ,&nbsp;Zongzheng Yang","doi":"10.1016/j.scp.2025.102120","DOIUrl":"10.1016/j.scp.2025.102120","url":null,"abstract":"<div><div>Brine sludge is solid waste generated in the chlor-alkali industry. It contains high concentrations of salts and chemical substances, posing environmental and health risks. In this study, brine sludge and Glauber's salt from the chlor-alkali industry was used as raw materials to synthesize calcium sulfate hemihydrate whiskers (CSHW). This approach enables the effective resource utilization of industrial solid waste. The optimal preparation conditions were determined through single-factor and orthogonal experiments. The synthesized whiskers were an average length of 114.07 μm and an average aspect ratio of 30.30 under the conditions of a reaction temperature of 98 °C, reaction time of 4.0 h, molar ratio of Ca<sup>2+</sup> to SO<sub>4</sub><sup>2−</sup> of 1:1, and reaction pH of 1.0. Mg<sup>2+</sup> and Fe<sup>3+</sup> in the brine sludge exert distinct influences on CSHW growth. Specifically, Fe<sup>3+</sup> inhibits the whiskers growth. When the pH was around 2.69 during acid leaching process, Fe<sup>3+</sup> concentration was effectively controlled at 2.5 × 10<sup>−6</sup> mM, which significantly suppressed Fe<sup>3+</sup> release from the brine sludge and ensured whiskers with optimal aspect ratios. Low-concentration Mg<sup>2+</sup> (0.025 M) demonstrates selective adsorption on the whisker surfaces, facilitating the growth of whiskers with high aspect ratios. The preferential adsorption of Mg<sup>2+</sup> on the (200) crystallographic plane of CSHW was confirmed by X-ray photoelectron spectroscopy (XPS), Zeta potential measurements, and density functional theory (DFT) calculations. This study offers a viable strategy for the resource utilization of waste from the chlor-alkali industry.</div></div>","PeriodicalId":22138,"journal":{"name":"Sustainable Chemistry and Pharmacy","volume":"46 ","pages":"Article 102120"},"PeriodicalIF":5.5,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144680313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermal recovery of diclofenac and valorization of excipients via pyrolysis 双氯芬酸的热回收和赋形剂的热解增值
IF 5.5 2区 化学
Sustainable Chemistry and Pharmacy Pub Date : 2025-07-22 DOI: 10.1016/j.scp.2025.102129
Layal Halawy , Walid Saad , Aline Milane , Sara Kawrani , Joseph Zeaiter
{"title":"Thermal recovery of diclofenac and valorization of excipients via pyrolysis","authors":"Layal Halawy ,&nbsp;Walid Saad ,&nbsp;Aline Milane ,&nbsp;Sara Kawrani ,&nbsp;Joseph Zeaiter","doi":"10.1016/j.scp.2025.102129","DOIUrl":"10.1016/j.scp.2025.102129","url":null,"abstract":"<div><div>In this study, pyrolysis is investigated as a sustainable waste treatment method for pharmaceuticals within the context of the circular economy. Pyrolysis experiments were conducted on four different diclofenac sodium drug product formulations, including two gastro-resistant tablets, one capsule, and one suppository. The resultant gases and liquids were analyzed by chromatography. The pyrolysis liquids of the tablets and capsules, with liquid yields up to 32.93 %, contained large amounts of the active pharmaceutical ingredient (API) itself, with relative abundance values up to 94.76 %, as well as compounds typically found in bio-oil, such as phenols, esters, and ketones, owing to multiple lignocellulosic-based excipients in the formulations. Gases consisted mostly of CO up to 79.77 mol%, with smaller quantities of CO<sub>2</sub>, H<sub>2</sub>, CH<sub>4</sub>, and ethylene. The suppositories produced a high liquid yield of 79.73 % with composition similar to those resultants from pyrolysis of fatty materials, containing acids, esters, and long-chain alkanes and alkenes, and gases rich in H<sub>2</sub>, CH<sub>4</sub>, and ethylene. DSC data was used to conduct an energy balance during the pyrolysis of each formulation. All products gave a net positive energy output with the capsule form producing the highest net energy of +14,566.77 J/g. The findings highlight the potential of pyrolysis to recover high-value APIs and generate energy-rich byproducts to support the overall sustainability of the process.</div></div>","PeriodicalId":22138,"journal":{"name":"Sustainable Chemistry and Pharmacy","volume":"46 ","pages":"Article 102129"},"PeriodicalIF":5.5,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144680428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Two-step pressurized liquid extraction: Sustainable recovery of phenolic antioxidants and high-purity limonene from orange peel waste 两步加压液体萃取:从废桔皮中可持续回收酚类抗氧化剂和高纯度柠檬烯
IF 5.5 2区 化学
Sustainable Chemistry and Pharmacy Pub Date : 2025-07-21 DOI: 10.1016/j.scp.2025.102117
Merichel Plaza , Rocío Gallardo-Martínez , María Luisa Marina
{"title":"Two-step pressurized liquid extraction: Sustainable recovery of phenolic antioxidants and high-purity limonene from orange peel waste","authors":"Merichel Plaza ,&nbsp;Rocío Gallardo-Martínez ,&nbsp;María Luisa Marina","doi":"10.1016/j.scp.2025.102117","DOIUrl":"10.1016/j.scp.2025.102117","url":null,"abstract":"<div><div>This study presents a novel biorefinery approach for the sustainable valorization of orange peel waste using pressurized liquid extraction (PLE) to selectively recover phenolic compounds and limonene. A consecutive two-step PLE strategy was developed, employing water for polyphenol extraction followed by ethyl acetate for limonene recovery. To maximize extraction efficiency and purity, a Box-Behnken design was employed to optimize temperature and extraction time of the two consecutive extractions. The optimal PLE extraction conditions were determined as 100 °C for aqueous extraction and 125 °C for ethyl acetate extraction, with 9 min per process. The first extraction involved three static cycles, while activated carbon was incorporated in the second step to minimize carotenoid co-extraction, yielding high-purity limonene. The aqueous extract was rich in flavanones, known for their antioxidant and health-promoting properties, while the ethyl acetate extract contained high-purity limonene, free from other volatiles or terpenes. Given its bioactive potential, limonene has applications in food, cosmetics, and as a bio-based alternative to petroleum-derived monomers in biopolymers. This optimized PLE process provides a rapid, efficient, and environmentally friendly alternative to conventional extraction techniques, supporting the circular economy by transforming agri-food waste into high-value bioactive compounds for food, nutraceutical, cosmetic, and biopolymer industries.</div></div>","PeriodicalId":22138,"journal":{"name":"Sustainable Chemistry and Pharmacy","volume":"46 ","pages":"Article 102117"},"PeriodicalIF":5.5,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144670985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Green innovation: Clean conversion of shield-discharged waste soil and industrial solid waste into environmentally friendly high-performance flowable fill 绿色创新:将盾构排放的废土和工业固体废物清洁转化为环保的高性能流动填料
IF 5.5 2区 化学
Sustainable Chemistry and Pharmacy Pub Date : 2025-07-20 DOI: 10.1016/j.scp.2025.102125
Guijie Zhao , Hongzhan Guan , Huan Yan , Jinfeng Tian , Yafei Han , Jiaqi Wang , Yunkai Ruan , Liang Zhao , Feng Chen
{"title":"Green innovation: Clean conversion of shield-discharged waste soil and industrial solid waste into environmentally friendly high-performance flowable fill","authors":"Guijie Zhao ,&nbsp;Hongzhan Guan ,&nbsp;Huan Yan ,&nbsp;Jinfeng Tian ,&nbsp;Yafei Han ,&nbsp;Jiaqi Wang ,&nbsp;Yunkai Ruan ,&nbsp;Liang Zhao ,&nbsp;Feng Chen","doi":"10.1016/j.scp.2025.102125","DOIUrl":"10.1016/j.scp.2025.102125","url":null,"abstract":"<div><div>To address the high resource consumption and environmental burden of traditional fill materials, this study presents an environmentally friendly flowable fill using shield-discharged waste soil (SDWS), ground granulated blast-furnace slag (GGBFS), and fly ash as the main raw materials activated by a NaOH–Na<sub>2</sub>SiO<sub>3</sub> composite. Microstructural analysis, performance testing, and life cycle assessment (LCA) were conducted to systematically evaluate the reaction mechanisms, engineering properties, environmental impacts, and economic viability of the developed material. The results show that the prepared flowable fill has excellent workability and mechanical properties, with an initial flowability of 602–755 mm and a 28-day compressive strength of 6.43–8.98 MPa. The aggregate-to-binder ratio and alkali equivalent exert a more significant effect on the compressive strength than the liquid-to-solid ratio and activator modulus do. Microstructural analysis indicates that GGBFS and fly ash, under alkali activation, synergistically form dense C–S–H and C–A–S–H gels, improving the properties of the material. The LCA results reveal that the flowable fill achieves carbon dioxide equivalent (CO<sub>2</sub>-eq) emissions of 136–214 kg CO<sub>2</sub>-eq/m<sup>3</sup>, an eco-strength efficiency (ESE) of 0.038–0.053 MPa/(kg CO<sub>2</sub>-eq·m<sup>−3</sup>), and a cumulative energy demand (CED) of 1095–1537 MJ/m<sup>3</sup>. Both the ESE and CED metrics outperform those of conventional high-strength ordinary Portland cement-based controlled low-strength materials (CLSMs). The raw material cost is 224–307 CNY/m<sup>3</sup>, and the use of SDWS further reduces costs. This study provides an innovative and sustainable solution for flowable fill, supporting the green transformation and sustainable development of the construction industry.</div></div>","PeriodicalId":22138,"journal":{"name":"Sustainable Chemistry and Pharmacy","volume":"46 ","pages":"Article 102125"},"PeriodicalIF":5.5,"publicationDate":"2025-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144665954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Catalyst- and solvent-free multicomponent synthesis of dihydropyridines from biomass-derived building blocks 无催化剂和溶剂的多组分合成二氢吡啶从生物质衍生的积木
IF 5.5 2区 化学
Sustainable Chemistry and Pharmacy Pub Date : 2025-07-16 DOI: 10.1016/j.scp.2025.102123
Camila Vazquez , Santiago Yara , Martha Cobo , Marcelo Murguía , Ángel G. Sathicq , Gustavo P. Romanelli
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