ACS Omega最新文献

{"title":"Remarkable Enhancement of TiO2–N Activity under Visible Light Exposure by Codoping with Cu from Electroplating Wastewater for Degradation of Amoxicillin Residual in Water Media","authors":"Kusuma Putri Suwondo,&nbsp;Early Zahwa Alharissa,&nbsp;Nurul Hidayat Aprilita and Endang Tri Wahyuni*,&nbsp;","doi":"10.1021/acsomega.4c0785310.1021/acsomega.4c07853","DOIUrl":"https://doi.org/10.1021/acsomega.4c07853https://doi.org/10.1021/acsomega.4c07853","url":null,"abstract":"<p >The development of photocatalysts with wastewater management has drawn the attention of many scientists. This research investigates the enhancement activity of TiO₂ photocatalyst codoped with N and Cu from urea and electroplating wastewater respectively as sources, for photodegradation of amoxicillin (AMX) residual in water media. The synthesis of codoped TiO₂ photocatalyst has been done through sol–gel process to determine the optimal concentration for each single dopant of Cu and N based on the highest band gap energy (<i>E</i>_g) narrowing and their performance in photodegradation of AMX. The synthesized photocatalysts are investigated by material characterization. The effect of the double dopants on the photocatalyst activity was examined through photodegradation of AMX. The optimum N and Cu dopant concentrations were 30 and 0.60 wt %, giving <i>E</i>_g values of 2.88 and 2.93 eV, respectively. This ratio is used to synthesize the codoping photocatalyst that significantly reduces <i>E</i>_g in 2.74 eV with AMX photodegradation reaching 95.76%. This dwindling of band gap energy in codoping photocatalyst could be widely applied in visible light exposure for the photodegradation of AMX having 20 mg/L in 50 mL over TiO₂–N,Cu (30:0.6 wt %) using 1 g/L of the photocatalyst dose, solution pH 5, and 120 min irradiation time.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 8","pages":"7722–7733 7722–7733"},"PeriodicalIF":3.7,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c07853","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genotoxic and Hematological Effects Associated with Chronic Dietary Mercury Toxicity in Juvenile Tilapia Oreochromis sp.","authors":"Ahieska A. Liscano-Carreño*,&nbsp;Cassiano J. Saatkamp,&nbsp;Ricardo B. de Oliveira and Luís R. R. Rodrigues,&nbsp;","doi":"10.1021/acsomega.4c0974910.1021/acsomega.4c09749","DOIUrl":"https://doi.org/10.1021/acsomega.4c09749https://doi.org/10.1021/acsomega.4c09749","url":null,"abstract":"<p >Fish farming and artisanal fishing represent important protein sources for riverside communities and populations of small towns in the Amazon. In recent decades, the Amazon basin has been the target of environmental contamination by mercury (Hg), which warns of possible adverse effects of human exposure through food. In this study, we evaluated the effect of mercury bioaccumulation in juvenile tilapia exposed via dietary intake. The fish were fed commercial feed supplemented with methylmercury chloride for a period of 28 days. Hematological parameters (hemogram, hematocrit (Hct), hemoglobin (Hgb), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC)) and genotoxic effects in blood (micronucleus (MN), erythrocytic nuclear abnormalities (ENAs), DNA damage) were analyzed. Total mercury (THg) was determined in muscle tissue and blood. Hg bioaccumulation increased 7-fold in exposed fish, representing a body accumulation rate of 41%. No variation in growth performance or feeding habits was observed. The following biomarkers Hgb, thrombocytes (Trb), MCH, MCHC, MN and ENAs showed variation as a function of exposure time. Compensatory mechanisms of defense metabolism showed greater deficiency between 21 and 28 days.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 8","pages":"8190–8201 8190–8201"},"PeriodicalIF":3.7,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c09749","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Oligomerization Function of the Native Exon 5 Sequence of Ameloblastin Fused with Calmodulin","authors":"Monika Zouharova,&nbsp;Petr Herman,&nbsp;Lucie Bednarova,&nbsp;Veronika Vetyskova,&nbsp;Romana Hadravova,&nbsp;Klara Postulkova,&nbsp;Lucie Zemanova,&nbsp;Jiri Vondrasek* and Kristyna Vydra Bousova*,&nbsp;","doi":"10.1021/acsomega.4c0795310.1021/acsomega.4c07953","DOIUrl":"https://doi.org/10.1021/acsomega.4c07953https://doi.org/10.1021/acsomega.4c07953","url":null,"abstract":"<p >The evolution of proteins is primarily driven by the combinatorial assembly of a limited set of pre-existing modules known as protein domains. This modular architecture not only supports the diversity of natural proteins but also provides a robust strategy for protein engineering, enabling the design of artificial proteins with enhanced or novel functions for various industrial applications. Among these functions, oligomerization plays a crucial role in enhancing protein activity, such as by increasing the binding capacity of antibodies. To investigate the potential of engineering oligomerization, we examined the transferability of the sequence domain encoded by exon 5 (Ex5), which was originally responsible for the oligomerization of ameloblastin (AMBN). We designed a two-domain protein composed of Ex5 in combination with a monomeric, globular, and highly stable protein, specifically calmodulin (CaM). CaM represents the opposite protein character to AMBN, which is highly disordered and has a dynamic character. This engineered protein, termed eCaM, successfully acquired an oligomeric function, inducing self-assembly under specific conditions. Biochemical and biophysical analyses revealed that the oligomerization of eCaM is both concentration- and time-dependent, with the process being reversible upon dilution. Furthermore, mutating a key oligomerization residue within Ex5 abolished the self-assembly of eCaM, confirming the essential role of the Ex5 motif in driving oligomerization. Our findings demonstrate that the oligomerization properties encoded by Ex5 can be effectively transferred to a new protein context, though the positioning of Ex5 within the protein structure is critical. This work highlights the potential of enhancing monomeric proteins with oligomeric functions, paving the way for industrial applications and the development of proteins with tailored properties.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 8","pages":"7741–7751 7741–7751"},"PeriodicalIF":3.7,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c07953","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Injectable Thermosensitive Thiol-Modified NIPAAm-g-Chitosan Hydrogels for Cartilage Regeneration in a Rabbit Osteoarthritis Model","authors":"Paula Carmela O. Ching,&nbsp;Ya-Ching Chang,&nbsp;Chen-Hsun Weng,&nbsp;Jun-Sheng Wang and Ming-Long Yeh*,&nbsp;","doi":"10.1021/acsomega.4c1082910.1021/acsomega.4c10829","DOIUrl":"https://doi.org/10.1021/acsomega.4c10829https://doi.org/10.1021/acsomega.4c10829","url":null,"abstract":"<p >Cartilage tissue has a limited intrinsic capacity for self-healing. Over the decades, researchers have extensively researched methods of cartilage repair, yet some limitations still need to be resolved. Most studies typically evaluate osteochondral regeneration in normal animals. However, traumatic articular cartilage defects may eventually result in osteoarthritis (OA), and the relationship between cartilage defects and OA is not independent. Therefore, in this study, the effect of thiol-modified NIPAAm-<i>g</i>-chitosan (TNC) hydrogels containing human adipose-derived mesenchymal stem cells (hADMSCs), with or without etanercept, a TNF-α inhibitor, was evaluated for cartilage regeneration in a monosodium iodoacetate (MIA)-induced OA rabbit model. TNC hydrogels, with a suitable lower critical solution temperature (LCST), porous interior microstructures, enhanced mechanical properties, and without cytotoxicity were synthesized and characterized by DSC, SEM, NMR, and the CCK8 kit. The OA rabbit models were established by MIA injection in the rabbit knees and verified with histological examinations and cytokine detection for IL-1β, IL-6, and TNF-α. According to macroscopic evaluations, micro-CT analysis, and histological and immunohistochemical evaluations, the results of cartilage repair in OA models showed improvement in cartilage regeneration in the cell-seeded hydrogel groups compared with the empty defect groups. Furthermore, etanercept effectively promoted osteochondral defect repair in the first 4 weeks. In OA models, TNC hydrogels containing hADMSCs and etanercepts could be promising for cartilage tissue engineering.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 8","pages":"8523–8537 8523–8537"},"PeriodicalIF":3.7,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c10829","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Highly Stable, Flexible, Anticorrosive Coating of Metalized Nonwoven Textiles for Durable EMI Shielding and Thermal Properties","authors":"Muhammad Zaman Khan*,&nbsp;Hadi Taghavian,&nbsp;Xiuling Zhang,&nbsp;Jiri Militky,&nbsp;Azam Ali,&nbsp;Jakub Wiener,&nbsp;Veronika Tunáková,&nbsp;Mohanapriya Venkataraman* and Lukas Dvorak,&nbsp;","doi":"10.1021/acsomega.4c0946710.1021/acsomega.4c09467","DOIUrl":"https://doi.org/10.1021/acsomega.4c09467https://doi.org/10.1021/acsomega.4c09467","url":null,"abstract":"<p >In the present research, an advanced silane-bonded polydopamine (PDA) coating through a simple, low-cost, and highly effective technique was employed to enhance the stability of copper-coated electromagnetic shielding fabrics. Coating the metalized nonwoven PET fabric with PDA can protect it from oxidation, mechanical forces, and extreme chemical conditions such as acid and alkali corrosion. The coated nonwoven fabric retained its excellent electromagnetic shielding effect even after machine- and handwashing cycles, showing average shielding effectiveness (SE) values above 41 dB for PDA@MEFTEX and Si-QAC/PDA@MEFTEX samples, and the average SE remained consistently above 39 dB under acidic and alkaline conditions. The PDA-coated MEFTEX did not significantly increase the surface and volume resistivities and exhibited excellent thermal insulation properties. In addition, silane-bonded PDA coating increased the softness, acted as a barrier, and provided a perfect interface that inhibits the penetration of corrosive ions from the surroundings. This outcome further highlights the promising impact of the novel coating, serving as protective coverage for metalized nonwoven fabric and providing good physical and thermal properties. This method can effectively protect electromagnetic shielding cloth, prolong the use time of shielding material, and expand its scope of application.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 8","pages":"8127–8139 8127–8139"},"PeriodicalIF":3.7,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c09467","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carvacrol Regulates the Expression of SLC25A6 by Inhibiting VDAC1 to Improve Mitochondrial Function and Reduce LPS-Induced Inflammatory Injury in HMEC-1 Cells","authors":"Cuifang Lu,&nbsp;Bin Yang,&nbsp;Ying Liu,&nbsp;Wenbo Liu,&nbsp;Jie Yan,&nbsp;Chenggong Guo,&nbsp;Tingyu Song and Xiaofei Wang*,&nbsp;","doi":"10.1021/acsomega.4c1079510.1021/acsomega.4c10795","DOIUrl":"https://doi.org/10.1021/acsomega.4c10795https://doi.org/10.1021/acsomega.4c10795","url":null,"abstract":"<p >Carvacrol has been demonstrated to possess anti-inflammatory and antioxidant properties. This study aims to further explore the mechanisms by which carvacrol mitigates LPS-induced human microvascular endothelial cells injury by improving mitochondrial function. An inflammatory injury model of human microvascular endothelial cells was established using LPS. The expression levels of inflammatory cytokines (IL-1β, IL-6, IL-18, TNF-α) were measured. Assessment of apoptosis, necrosis, and proliferation was conducted using the YO-PRO-1/PI apoptosis and necrosis detection kit and EdU assay. The evaluation of oxidative stress levels was facilitated by the use of ROS, MDA, and SOD assay kits. Angiogenic capacity and cytoskeletal changes were also examined. Assessment of mitochondrial function and energy metabolism was achieved by measuring mitochondrial membrane potential (MMP), mitochondrial permeability transition pore (mPTP) opening, ROS levels, and ATP production. Western blot analysis was performed to detect the expression of VDAC1 and SLC25A6. The results show that carvacrol significantly reduced LPS-induced expression of IL-1β, IL-6, IL-18, and TNF-α and alleviated the effects of LPS on cell proliferation and apoptosis of HMEC-1. It also decreased oxidative stress levels, inhibited excessive tube formation capacity, and promoted cytoskeletal remodeling. Furthermore, carvacrol has been shown to reduce VDAC1 protein expression, improve mitochondrial function and energy metabolism by regulating MMP, mPTP opening, ROS levels, and ATP production, and increase SLC25A6 protein expression. Importantly, carvacrol and VDAC1 knockdown exhibited similar effects. In the mechanism of inflammatory injury, SLC25A6 may act as a downstream effector of VDAC1. The results of this study demonstrate that carvacrol exerts a protective effect on human microvascular endothelial cells by improving mitochondrial function and alleviating oxidative stress through the inhibition of VDAC1.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 8","pages":"8512–8522 8512–8522"},"PeriodicalIF":3.7,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c10795","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anticancer Activities of Natural and Synthetic Steroids: A Review","authors":"Daniel F. Mendoza Lara,&nbsp;M. Elena Hernández-Caballero,&nbsp;Joel L. Terán,&nbsp;Jesús Sandoval Ramírez* and Alan Carrasco-Carballo*,&nbsp;","doi":"10.1021/acsomega.4c0857710.1021/acsomega.4c08577","DOIUrl":"https://doi.org/10.1021/acsomega.4c08577https://doi.org/10.1021/acsomega.4c08577","url":null,"abstract":"<p >Steroids have demonstrated a wide field of research on the subject of anticancer compounds, particularly antiproliferative with cell lines, with special emphasis on the historical link between steroids and cancer and the use of in silico technologies to understand the impact of natural and synthetic steroids on cancer cells focused on finding common denominators of the type of structural changes that give antiproliferative and/or cytotoxic properties, both in control and cancer cell lines. Through this review and classification by origin and/or synthesis, it is found that steroidal saponins are highly cytotoxic, although with low selectivity against control cells, while on the part of the aglycone the presence of heteroatoms such as nitrogen and oxygen increases the antiproliferative activity, mainly via cell cycle arrest and the induction of apoptosis, mechanisms that have been partially proven, using semisynthetic derivatives, as well as bioconjugates between saponins and nitrogenous steroids with now a high cytotoxicity and selectivity against control cell lines. This gives rise to the idea that steroids as a study model for the design of anticancer agents are an excellent template with a wide field of study.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 8","pages":"7493–7509 7493–7509"},"PeriodicalIF":3.7,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c08577","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chemical, Physical, Microbial, and Sensory Properties of Innovative Sesame Milk Kefir, Focusing on the Ultrastructure of Kefir Grains","authors":"Ibrahim A. A. Abou Ayana*,&nbsp;Fatimah O. Al-Otibi,&nbsp;Mohamed R. Elgarhy,&nbsp;Mohamed M. Omar,&nbsp;Mohamed. Z. EL-Abbassy,&nbsp;Salah A. Khalifa,&nbsp;Yosra A. Helmy and WesamEldin I. A. Saber*,&nbsp;","doi":"10.1021/acsomega.4c0804410.1021/acsomega.4c08044","DOIUrl":"https://doi.org/10.1021/acsomega.4c08044https://doi.org/10.1021/acsomega.4c08044","url":null,"abstract":"<p >The demand for innovative plant-based probiotic beverages is growing rapidly. This study aimed to develop and evaluate a novel kefir beverage using two types of sesame milk: permeate-based sesame milk (PSM) and water-based sesame milk (WSM). Chemical, physical, microbial, and sensory properties of kefir were assessed. The total solids content (protein, fat, carbohydrates, and ash) in fresh kefir was 12.68, 13.31, and 16.38% for cow milk kefir (CMK), WSM kefir (WSMK), and PSM kefir (PSMK), respectively, and increased slightly after 14 days of storage, reaching 13.18, 13.53, and 16.56%. The fresh PSMK exhibited notable mineral content, containing (mg/100 g) 258.23 Ca, 137.14 P, 70.24 K, and smaller amounts of Na, Mg, Cu, Fe, Zn, and Mn, along with 5.18 μg/100 g of Se. In terms of volatile compounds, PSMK had the highest acetaldehyde concentration (7.48 mg/L), followed by CMK (4.91 mg/L) and WSMK (4.44 mg/L). Ethanol levels were the highest in fresh WSMK (0.129%). The viscosity and color attributes of PSMK were closely aligned with those of CMK, with the viscosity increasing over time to 1.53, 1.40, and 1.57 cP for PSMK, WSMK, and CMK, respectively. All kefir types supported viable probiotic populations, with PSMK demonstrating superior <i>Lactobacillus</i> and <i>Lactococcus</i> growth compared to WSMK. Sensory evaluations revealed high consumer acceptability for PSMK, comparable to CMK, with a purchase recommendation rate exceeding 76% for both PSMK and WSMK. Scanning electron microscopy revealed that the microstructure of PSMK grains was well-balanced and similar to that of CMK grains. This study highlights PSM as a promising dairy alternative for producing high-quality probiotic kefir, offering consumers an appealing, nutritious option within the growing plant-based beverage market.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 8","pages":"7752–7769 7752–7769"},"PeriodicalIF":3.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c08044","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insight into the Pyrolysis of Melocanna baccifera Biomass: Pyrolysis Behavior, Kinetics, and Thermodynamic Parameters Analysis Based on Iso-conversional Methods","authors":"Pikesh Kumar,&nbsp; and ,&nbsp;Kaustubha Mohanty*,&nbsp;","doi":"10.1021/acsomega.4c1042310.1021/acsomega.4c10423","DOIUrl":"https://doi.org/10.1021/acsomega.4c10423https://doi.org/10.1021/acsomega.4c10423","url":null,"abstract":"<p ><i>Melocanna baccifera</i> biomass’s thermal degradation was investigated in a nonisothermal thermogravimetric analyzer at four heating rates. Iso-conversional methods (differential Friedman, Kissinger–Akahira–Sunose, Ozawa–Flynn–Wall, Starink, and distributed activation energy) were used to analyze the kinetic and thermodynamic parameters. The pre-exponential factor and activation energy for all iso-conversional processes varied from 10²⁰ to 10³⁵ min^–1 and 168.70 to 218.86 kJ mol^–1 respectively. The average enthalpy and Gibbs free energy varied in the range 265.49 to 451.89 and 165.27 to 193.7 kJ mol^–1, respectively, at maximum conversion. The highest product yield of liquid plus biochar (53.67 ± 0.7 wt %) was obtained at 550 °C during pyrolysis of biomass, and BET surface area and high heating values were 27.27 MJ kg^–1 and 58.69 m² g^–1, respectively, for biochar at the optimum condition (550 °C). GC–MS revealed the presence of phenols (42.18%), ketones (14.33%), carboxylic acids (2.37%), and alcohols (11.72%). Combining these results suggests that biochar and pyrolytic bio-oil have a variety of applications and that <i>M. baccifera</i> biomass can be used as a feedstock for producing sustainable chemicals and fuel.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 8","pages":"8420–8432 8420–8432"},"PeriodicalIF":3.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c10423","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic Effects of Waste Tires, Plastic, and Biomass in Pyro-Oil Production","authors":"Vhukudo Hazel Singo,&nbsp;Lanrewaju Ibrahim Fajimi,&nbsp;Naadhira Seedat* and Rishen Roopchund,&nbsp;","doi":"10.1021/acsomega.4c0277710.1021/acsomega.4c02777","DOIUrl":"https://doi.org/10.1021/acsomega.4c02777https://doi.org/10.1021/acsomega.4c02777","url":null,"abstract":"<p >This study explores the potential of converting waste tires, low-density polyethylene (LDPE) waste plastic, biomass (sawdust), and their blends into pyro-oils. Comprehensive analyses, including proximate and ultimate analyses and calorific value (CV) assessments, were conducted to determine the elemental composition, moisture content, ash content, fixed carbon, volatile matter, and energy density of the feedstocks. Thermogravimetric analyses (TG and DTG) assessed the thermal stability and decomposition points, while scanning electron microscopy (SEM) examined the surface characteristics and morphology of the feedstocks and their blends. These characterizations were crucial for evaluating the suitability of the feedstocks for pyrolysis. DTG analysis indicated decomposition temperature ranges of 315–498 °C for waste tires, 420–534 °C for waste plastic, 224–413 °C for biomass, and 220–527 °C for the blend. FTIR analysis of the produced pyro-oils identified functional groups such as phenols, alcohols, ketones, aldehydes, and alkanes. The study also investigated the effects of feedstock composition and temperature on the synergistic effect of pyro-oil yield. The highest CVs of pyro-oil were 50.28 MJ/kg from waste plastics, 47.36 MJ/kg from waste tires, and 43.39 MJ/kg from the blends at a 2:1:1 mass ratio at 550 °C. The highest pyro-oil yields were wt % from waste tires with 46.7 and 53.3 wt % at 500 and 550 °C, respectively, and 41.7 wt % from the blends at a 2:1:1 mass ratio at 550 °C. Optimal operating conditions were determined to be 550 °C with a 2:1:1 mass ratio for maximizing pyro-oil yield. Overall, this study provides valuable insights into the potential of combining waste tires, waste plastics, and biomass for pyro-oil production, emphasizing the importance of specific operating conditions and feedstock ratios to achieve optimal results.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 8","pages":"7609–7620 7609–7620"},"PeriodicalIF":3.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c02777","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}