FOOD CHEMISTRY
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2024
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IF 8.5
Ying-dan Zhu,Yue-ting Luan,Cheng-liang Chai,Ya-lin Xue,Zhang-qun Duan
With the extension of heat processing, the oxidation and formation of harmful substances in oils appeared. The effect of the high-temperature stages (180 °C, four stages I, II, III, and IV were divided according to the heating-up period) on the fatty acid profile, the thermal properties, the composition of total polar compounds, and the physicochemical properties of rapeseed oil (RSO) were investigated. As the heating processing, carnosic acid (CA) significantly reduces the peroxide value, p -anisidine value, trans-fatty acid, the action of alkyl radicals, and the formation of oxidized triglyceride monomers (Ox-TGM). The T p of the RSO shifts towards the lower temperature, and the enthalpy exhibits a significant decrease in stages II, III, and IV. Stage II is the crucial period for the transformation of Ox-TGM into polymers. CA helps control the oxidation process of the oil. It is essential to maintain the quality and prolong the usage time of RSO.
研究领域:
食品科学
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化学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yangyang Ma,Chiquan He,Linlin Yang,Xiaoyan Liu,Feifei Wang
Benzo [a] anthracene (BaA), a highly toxic tetracyclic polycyclic aromatic hydrocarbon, is frequently detected in soils worldwide. Traditional high-temperature thermal desorption and unactivated advanced oxidation process (AOP) are either energy-intensive or inefficient due to slow pollutant degradation. This study presented an innovative and effective remediation approach for BaA contaminated soil by combining low-temperature thermal desorption with AOP. The combined method utilizes heat from low-temperature thermal desorption to activate sodium persulfate, thereby enhancing BaA degradation. The results demonstrated that the combined low-temperature thermal desorption and AOP achieved an impressive BaA removal efficiency of up to 92.7 % at 60 °C and 90 °C, surpassing the efficiency of individual treatments. The primary reactive oxygen species responsible for BaA degradation were identified as sulfate radicals and hydroxyl radicals with both contributing nearly equally to the process. The study identified the intermediates formed during BaA degradation and proposed a degradation pathway. The intermediates had lower boiling points and reduced toxicity compared to BaA, indicating the mineralization process was effective in reducing environmental risks. Additionally, the addition of 3 mL methanol improved BaA removal efficiency to 62.2 % from 41.9 % in the control group without methanol, indicating the addition of methanol in AOP significantly improved BaA removal by enhancing desorption from soil particles. This research underscores the potential of the combined low-temperature thermal desorption and AOP as a sustainable, energy-efficient, and cost-effective remediation technology for soils contaminated with polycyclic aromatic hydrocarbons, offering a promising solution for soil remediation.
研究领域:
环境科学
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土壤修复
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化学工程
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DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·Vol. 31
·期 39
·51673-51686
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IF 0
Wang Xi,Hou Fali,Zhai Jinli,Yan Jiali,Gong Chao,Li Yinghao,Zhu Wenjie,Luo Yongming,Yang Daoli,Gao Xiaoya
Considering the high cost and complicated recycling process of spent lithium-ion batteries (SLIBs), transforming SLIBs into environment functional materials may be a wise approach. Herein, lithium cobaltite (LCO) cathode powders recovered from SLIBs were used to activate peroxymonosulfate (PMS) for removing carbamazepine (CBZ). The recovered LCO enables a 98.2% removal efficiency of CBZ (2.5 mg/L) within 10 min, which was effective at a broader pH range (pH = 5.0–11.0). The influence of key factors (initial pH, PMS, and catalyst dosage) and coexisting substances (SO 4 2− , H 2 PO 4 − , NO 3 − , Cl − , HCO 3 − , and HA) on CBZ degradation were examined in detail. The primary radical species during the degradation of CBZ were proved to be 1 O 2 , SO 4 − , and . OH that generated from PMS activation initiated by the valence change of Co in recovered LCO. The recovered LCO displayed excellent reusability with about 80.0% removal of CBZ after six cycles. Homogeneous activation of PMS mainly contributed to CBZ degradation in the first run, but the recovered LCO catalyst dominated the heterogeneous activation of PMS for the degradation of CBZ in the second to sixth run. Finally, the CBZ degradation pathways were presented based on the identified intermediates. This research has offered a new strategy of “treating wastes with wastes” to maximize the recycling of electronic wastes to remove emerging pollutants.
研究领域:
环境科学
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化学工程
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DOI
PubMed
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
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2024
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IF 6.9
Niao Zou,Hong Guo,Zhihong Zheng,Yuancai Lv,Yifan Liu,Zengpeng Chen,Minghua Liu
Heterogeneous electro-Fenton (hetero-EF) system was one of the most promising approaches for treating antibiotic-laden wastewater. However, the rational design of cost-effective, eco-friendly, and efficient earth-abundant electrocatalysts remains a significant challenge. This study synthesized a novel catalyst, lignin-based metal biochar (Co-L@C), from coniferous lignin via hydrothermal reaction and temperature-controlled pyrolysis. The results demonstrated that Co-L@C achieved nearly 100 % oxytetracycline hydrochloride (OTC) removal within 30 min employing the hetero-EF system, consistently exhibiting efficient OTC degradation rates across a wide pH range (3−9) and in various practical water matrices. In conjunction with the burst test and electron paramagnetic resonance (EPR) analysis, singlet oxygen ( 1 O 2 ) was shown to play a dominant role in OTC degradation. At the same time, further investigation revealed that hydroxyl radicals (·OH), superoxide radicals (O 2 ·− ), and dissolved oxygen (DO) all contributed to 1 O 2 production. This work offers a potential technology for the effective degradation of antibiotic-contaminated wastewater.
研究领域:
环境科学
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材料科学
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化学工程
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DOI
高影响因子
Water
·
2024
·Vol. 16
·期 9
·1281
·
IF 3
Xiuneng Zhu,Jie Qiu,Yexing Wang,Yulin Tang,Yongji Zhang
There is more and more research focusing on the removal of dioxane by advanced oxidation technology at this stage, and this study investigated the efficacy of an advanced oxidation system with UV-activated persulfate (UV/PDS). This method had the advantages of fast reaction rate, simple equipment and convenient operation. Free radical quenching test and electron paramagnetic resonance (EPR) analysis showed that the main active radicals in the reaction system wereSO4−and ·OH. This study also investigated that the optimal parameters were the initial PDS dosage of 3 mM, the UV intensity of 0.190 mM/cm2, the pH between 5 and 7 and the initial dioxane concentration of 50 mg/L. Additionally, after a reaction time of 150 min, the total organic carbon (TOC) content still remained at 83.53%, which revealed that the mineralization degree of organic matter was not fully achieved through UV/PDS treatment. The concentration ofSO42−in the reaction system was 74.69 mg·L−1, which complied with the standard concentration specified. Furthermore, the cytotoxicity of the system exhibited an initial increase followed by a subsequent decrease, under the influence of the intermediates. It showed that the technology could efficiently degrade organic pollutants.
研究领域:
环境科学
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化学工程
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水处理
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DOI
高影响因子
FOOD CHEMISTRY
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2024
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IF 8.5
Libin Sun,Zhe Huang,Junguo Wang,Dianyu Yu,Liqi Wang
Oxidative stability is a key quality characteristic of edible oils, and the oil’s antioxidant capacity decreases during the deodorization stage. This study explores the changes in radical formation, molecular structure, oxidative characteristics, fatty acids, and main bioactive compounds in soybean oil during deodorization. The lag phase decreased, whereas the total amount of spins of free radicals increased as the deodorization time increased from 90 to 150 min. The total amount of spins and percentage of alkyl radicals varied dramatically under different times and temperatures (220 ∼ 260 ℃). Results showed that identifying and quantifying the formed radicals can provide useful information for monitoring and controlling oil oxidation in vegetable oil refining systems. Therefore, to control early oxidation events, maximize refined oil product yield, and reduce energy consumption in the refining plant, the priority should be to minimize temperature during the oil refining process and then shorten the deodorization time.
研究领域:
食品科学
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化学
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Chaozhi Kuang,Yaoyao Wu,Guoshen Zeng,Yangjian Zhou,Zhuofeng Hu,Dexuan Li,Jiapeng Zhong,Rongyue Wang,Yuanlong Yang,Chuanhao Li
The electron transfer-based nonradical advanced oxidation processes (AOPs) exhibit great potential for degrading organic pollutants. However, achieving efficient electron transfer-based nonradical AOPs remains challenging. In this study, we developed the edge-rich and nitrogen/phosphorus (N/P) co-doped graphene nanoribbons by unfolding the multi-walled carbon nanotubes (MWCNTs). The catalysts with the edge-rich structure are capable of efficiently activating the peroxydisulfate (PDS) towards the degradation of carbamazepine (CBZ), a representative pharmaceutical and personal care products (PPCPs). Through adjusting the N/P ratio, the N/P co-doped graphene nanoribbons presented the optimal degradation kinetic constant of 0.452 min −1 , compared with 0.0611 min −1 for the intact MWCNTs. Electrochemical characterizations, in situ Raman, galvanic oxidation tests, and quenching experiments confirmed that the N/P co-doped graphene nanoribbons followed an electron transfer-dominated nonradical pathway for pollutant degradation. Density functional theory (DFT) demonstrated that the exposed N/P co-doped edges at the boundary of graphene nanoribbons could elongated O O bond of PDS in facilitating PDS activation. This study provides a new approach to develop the nonradical AOPs-based techniques.
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-13
·
IF 15.7
You Xiujia,Zhang Hanmin,Lin Hongjun,Rao Linhua
Gel fouling is a major rate-limiting factor for forward osmosis (FO) dewatering of waste activated sludge (WAS). This study proposes a novel FO system, assisted by in-situ ultraviolet/electrooxidation (UV/E-Cl) driven by dynamic reverse chloride ions (Cl − ), for simultaneous WAS conditioning and dewatering. Superior filtration performances were achieved, with water flux reaching 614% of the control and filtration resistance reduced by orders of magnitude, primarily due to the targeted attack on protein and polysaccharide fractions within extracellular polymeric substances (EPS). Density functional theory (DFT) simulations identified that protein-polysaccharide interactions prefer a specific linear configuration, driving cross-linked network formation. Interfacial thermodynamics demonstrated that UV/E-Cl decreased foulant adhesion energy on the membrane surface by 97.51% through cleaving cross-links. Crucially, this work provides the quantitative thermodynamic evidence that shifts in water occurrence states surrounding network pores from bound to free water dominate gel fouling mitigation, with chemical potential variation accounting for 90.71% of filtration resistance.
研究领域:
环境工程
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生物化学
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DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
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IF 19
Wenting Xu,Yuzhen Yang,Lijuan Liu,Bangli Hu,Yanping Tang,He Ding,Litu Zhang,Piaoping Yang,Chen Wang
Ferroptosis is a newly identified type of regulated cell death characterized by iron-dependent lipid peroxidation. Among the main ferroptosis-suppressing systems, the dihydroorotate dehydrogenase (DHODH)- ubiquinone axis is closely related to mitochondria and energy metabolism, implying that the axis protects cells from oxidative stress damage via the maintenance of redox homeostasis. However, ferroptosis initiation requires a suitable oxidative environment and a breakthrough in redox homeostatic limitations by ferroptosis-suppressing systems. Hence, the nanoparticles are rationally engineered to achieve efficient ferroptosis induction by releasing dual-release free iron and disrupting ferroptosis-suppressing systems. Atovaquone (ATO)-loaded hollow mesoporous etching zeolitic imidazolate framework-67 double-coated iron oxide/calcium phosphate (Fe 3 O 4 /CaP) is conjugated with polyethylene glycol. The external double-coated Fe 3 O 4 /CaP structure enhances the efficiency of multiple reactive oxygen species (ROS) generation promoting oxidative stress. Still, it achieves free iron dual-release to increase the content of unstable iron pools for igniting the ROS storm and lipid peroxidation spark. The release of ATO not only affects the energy metabolism of the mitochondrial respiratory chain by binding to complex III but also downregulates DHODH to restrict the ubiquinol system to disrupt the ferroptosis-suppressing systems. Therefore, the design of this composite nanomedicine provides an approach for inducing ferroptosis and a theoretical basis for clinical ferroptosis anti-tumor trials.
研究领域:
肿瘤学
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分子生物学
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纳米医学
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药理学
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DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2025
·
IF 3.7
Xiao Wei,Xuan Fang,Shuming Ma,Huaqiang He,Zhixin Wu,Silin Li,Shihao Zhang,Pei Nian,Wenlan Ji,Yibin Wei
Addressing the contamination of antibiotics has attracted ever-increasing and imperative attention due to their widespread existence, easy-to-cause drug-resistant bacteria infection, coupled with their intrinsic toxicity and hazard to environments and human health. Herein, a novel CC/CoNi-LDH-10%Ce anode material was directly constructed through a simple and rapid electrodeposition strategy, serving as an efficacious electrocatalyst for removing ciprofloxacin (CIP) from aqueous solution. Such novel CC/CoNi-LDH-10%Ce anode delivered a higher charge transfer, relatively abundant oxygen vacancies, and a higher electrochemical active area. The as-fabricated CC/CoNi-LDH-10%Ce electrode achieved a substantially boosted CIP removal efficiency of 52.5% relative to that of pure CC at about 23.9%. Notably, doping an appropriate amount of Ce 3+ can endow the pristine CC/CoNi-LDH with richer oxygen vacancies and excellent electrocatalytic performance. Additionally, the electrocatalytic oxidation of CIP was attributed to both direct oxidation on the electrode surface and indirect oxidation induced by the generated active species (superoxide radicals and hydroxyl radicals). This study provides a simple, universal and flexible tactic for other researchers in designing and manufacturing avenues of electrodes.
研究领域:
环境科学
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材料科学
·
电化学
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产品关联
DOI
高影响因子
Journal of Water Process Engineering
·
2024
·
IF 6.3
Hai-Xu Zou,Yang-Yang Xu,Xing Fan,Feng-Yun Ma,Wei-Dong Cao,De-Quan Li,Jia-Feng Song
Simulated wastewater samples, representative of coal chemical industry and comprising major constituents such as phenol , p -cresol, o -cresol, and naphthalene , were subjected to treatment in a range of catalytic ozonation systems. To prepare the catalysts for ozonation, three series of metal oxides, iron oxides , manganese oxides , and cerium oxides, were manufactured onto the surface of γ-Al 2 O 3 support in varying loadings. The determination of the optimal loading amount for each catalyst was based on the observed removal efficiency of chemical oxygen demand (COD) in phenol-containing aqueous solution. Primary small molecular organic acids formed in the aqueous solution during the degradation of phenol were analyzed by ion chromatography . The decomposition of ozone without catalyst can directly oxidize phenol, and catalytic ozonation can reach the same goal through the generation of OH. The synergy effects between ozone and the catalysts facilitate the production of highly reactive oxidizing species, leading to more efficacious degradation of phenol and an increased total concentration of organic acids till 37.8 mg/L. Radical capture experiments revealed that the generation of OH within the catalyzed ozonation system is associated with the presence of oxygen defects on the catalyst's surface, which significantly influenced the catalytic efficacy during the ozonation process. A loading of 20 %CeO2 on γ-Al2O3 support exhibited the best COD removal rate as high as 90 % due to the increased availability of lattice oxygen participating in catalytic ozonation. Thus, the methodology built for the optimization of ozonation catalyst is proven a promising way to prepare candidate catalyst for the treatment of wastewater from coal chemical industry.
研究领域:
环境科学
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化学工程
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Zhiming Lai,Yang Yang,Zhou Yang,Wenqi Ruan,Can Yang,Qiang Chen,Kaining Ding,Jinshui Zhang,Yidong Hou
The development of durable and highly efficient visible-light-driven photocatalysts is essential for the photocatalytic ozonation process towards degrading organic pollutants. This study presents CN-MA, a novel photocatalyst synthesized by grafting carbon nitride (CN) with single-atom Mn and 2-hydroxy-4,6-dimethylpyrimidine (HDMP) via one-step thermal polymerization. Experimental characterization and theoretical calculation results reveal that incorporating single-atom Mn and HDMP into CN alters the charge density distribution on the heptazine rings. This modification enhances the absorption of visible light and reduces exciton binding energy, leading to improved separation and migration of photogenerated charge carriers. Moreover, the single-atom Mn provides abundant active sites for O 3 adsorption and activation, which increases the utilization of photogenerated electrons to produce highly reactive oxidative species. Consequently, CN-MA exhibits superior photocatalytic ozonation activity, achieving 94% mineralization of phenol within 60 min and maintaining excellent stability over multiple cycles. The research also proposes a plausible reaction mechanism based on free-radical trapping experiments and steady-state concentration experiments using molecular probes. This strategy advances the development of molecular-engineered catalysts co-modified with single metal atoms, thereby enhancing the photocatalytic ozonation process for the degradation of organic pollutants.
研究领域:
环境科学
·
材料科学
·
化学工程
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）