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Comparison of UV-based advanced oxidation processes for the removal of different fractions of NOM from drinking water

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Journal of Environmental Sciences 2023年第4期126卷 387-395页

作者： Zhenxing Yao Mingquan Wang Ruibao Jia Qinghua Zhao Li Liu Shaohua Sun Shandong Province City water supply and drainage water Quality monitoring center Jinan 250101China

This study examined the effectiveness for degradation of hydrophobic (HPO),transphilic(TPI) and hydrophilic (HPI) fractions of natural organic matter (NOM) during UV/H_(2)O_(2),UV/TiO_(2)and UV/K2S2O8(UV/PS) advanced oxidation processes (AOPs).The changing characteristics of NOM were evaluated by dissolved organic carbon (DOC),the specific UV absorbance (SUVA),trihalomethanes formation potential (THMFP),organic halogen adsorbable on activated carbon formation potential (AOXFP) and parallel factor analysis of excitation–emission matrices (PARAFAC-EEMs).In the three UV-based AOPs,HPI fraction with low molecular weight and aromaticity was more likely to degradate than HPO and TPI,and the removal efficiency of SUVA for HPO was much higher than TPI and HPI *** terms of the specific THMFP of HPO,TPI and HPI,a reduction was achieved in the UV/H_(2)O_(2)process,and the higest removal rate even reached to 83%.UV/TiO_(2)and UV/PS processes can only decrease the specific THMFP of *** specific AOXFP of HPO,TPI and HPI fractions were all able to be degraded by the three UV-based AOPs,and HPO content is more susceptible to decompose than TPI and HPI ***/H_(2)O_(2)was found to be the most effective treatment for the removal of THMFP and AOXFP under given conditions.C1 (microbial or marine derived humic-like substances),C_(2) (terrestrially derived humic-like substances)and C_(3) (tryptophan-like proteins) fluorescent components of HPO fraction were fairly labile across the UV-based AOPs treatment.C_(3) of each fraction of NOM was the most resistant to degrade upon the UV-based *** from this study may provide the prediction about the consequence of UV-based AOPs for the degradation of different fractions of NOM with varied characteristics.

关键词： Advanced oxidation processes Natural organic matter Trihalomethanes Organic halogen adsorbable on activated carbon Parallel factor analysis

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Experimental and theoretical investigation on degradation of dimethyl trisulfide by ultraviolet/peroxymonosulfate: Reaction mechanism and influencing factors

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Journal of Environmental Sciences 2023年第5期127卷 824-832页

作者： Jianing Sun Xiaodong Xin Shaohua Sun Zhenqi Du Zhenxing Yao Mingquan Wang Ruibao Jia Shandong Province water supply and drainage monitoring center Jinan 250101China School of water Conservancy and Environment University of JinanJinan 250022China State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China

With a large amount of domestic sewage and industrial wastewater discharged into the water bodies,sulfur-containing organicmatter inwastewater produced volatile organic sulfide,such as dimethyl trisulfide(DMTS)throughmicroorganisms,caused the potential danger of drinking water safety and human *** present,there is still a lack of technology on the removal of *** this study,the ultraviolet/peroxymonosulfate(UV/PMS)advanced oxidation processes was used to explore the degradation of *** than 90%of DMTS(30μg/L)was removed under the conditions of the concentration ratio of DMTS to PMS was 3:40,the temperature(T)was 25±2℃,and 10 min of irradiation by a 200 W mercury lamp(365 nm).The kinetics rate constant k of DMTS reacting with hydroxyl radical(HO·)was determined to be 0.2477 min^(−1).Mn^(2+),Cu^(2+)and NO_(3)^(-)promoted the degradation of DMTS,whereas humic acid and Cl-in high concentrations inhibited the degradation *** chromatography-mass spectrometry was used to analyze the degradation products and the degradation intermediates were dimethyl disulfide and *** functional theory was used to predict the possible degradation mechanism according to the frontier orbital theory and the bond breaking mechanism of organic *** results showed that the S–S,C–S and C–H bonds in DMTS molecular structure were prone to fracture in the presence of free radicals,resulting in the formation of alkyl radicals and sulfur-containing radicals,which randomly combined to generate a variety of degradation products.

关键词： Ultraviolet/peroxymonosulfate Dimethyl trisulfide Products Density functional theory Degradation mechanism

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Super-resolution imaging for in situ monitoring sub-cellular micro-dynamics of small molecule drug

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Acta Pharmaceutica Sinica B 2024年第4期14卷 1864-1877页

作者： Huimin Chen Guiqian Fang Youxiao Ren Weiwei Zou Kang Ying Zhiwei Yang Qixin Chen School of Pharmaceutical Sciences&Institute of Materia Medica Medical Science and Technology Innovation CenterShandong First Medical University&Shandong Academy of Medical SciencesJinan 250062China MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of PhysicsXi'an Jiaotong UniversityXi'an 710049China Reproductive Medicine center Department of Obstetrics and Gynecologythe First Affiliated Hospital of Anhui Medical UniversityHefei 230022China

Small molecule drugs play a pivotal role in the arsenal of anticancer pharmacological agents. Nonetheless, their small size poses a challenge when directly visualizing their localization, distribution, mechanism of action (MOA), and target engagement at the subcellular level in real time. We propose a strategy for developing triple-functioning drug beacons that seamlessly integrate therapeutically relevant bioactivity, precise subcellular localization, and direct visualization capabilities within a single molecular entity. As a proof of concept, we have meticulously designed and constructed a boronic acid fluorescence drug beacon using coumarin–hemicyanine (CHB). Our CHB design includes three pivotal features: a boronic acid moiety that binds both adenosine triphosphate (ATP) and adenosine diphosphate (ADP), thus depleting their levels and disrupting the energy supply within mitochondria;a positively charged component that targets the drug beacon to mitochondria;and a sizeable conjugated luminophore that emits fluorescence, facilitating the application of structured illumination microscopy (SIM). Our study indicates the exceptional responsiveness of our proof-of-concept drug beacon to ADP and ATP, its efficacy in inhibiting tumor growth, and its ability to facilitate the tracking of ADP and ATP distribution around the mitochondrial cristae. Furthermore, our investigation reveals that the micro-dynamics of CHB induce mitochondrial dysfunction by causing damage to the mitochondrial cristae and mitochondrial DNA. Altogether, our findings highlight the potential of SIM in conjunction with visual drug design as a potent tool for monitoring the in situ MOA of small molecule anticancer compounds. This approach represents a crucial advancement in addressing a current challenge within the field of small molecule drug discovery and validation.

关键词： Mitochondrial Drug beacon Sub-cellular Small molecule Energy supply Anti-tumor

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Investigate of in situ sludge reduction in sequencing batch biofilm reactor:Performances,mechanisms and comparison of different carriers

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Frontiers of Environmental Science & Engineering 2018年第5期12卷 131-145页

作者： Yonglei Wang Baozhen Liu Kefeng Zhang Yongjian Liu Xuexin Xu Junqi Jia School of Municipal and Environmental Engineering Shandong Jianzhu UniversityJinan 250101China Co-Innovation center of Green Building Jinan 250101China Shandong Province City water supply and drainage water Quality monitoring center Jinan 250101China Shandong Huaihe River Basin water Conservancy Administration Planning and Design Institute Jinan 250101China

Biofilm is an effective simultaneous denitrification and in situ sludge reduction system,and the characteristics of different biofilm carrier have important implications for biofilm growth and in situ sludge *** this study,the performance and mechanism of in situ sludge reduction were compared between FSC-SBBR and SC-SBBR with constructed by composite floating spherical carriers(FSC)and multi-faceted polyethylene suspension carriers(SC),*** variation of EPS concentration indicated that the biofilm formation of FSC was faster than *** with SCSBBR,the FSC-SBBR yielded 0.16 g MLSS/g COD,almost 27.27%less *** average removal rates of COD and NH_(4)^(+)-N were 93.39% and 96.66%,respectively,which were 5.21% and 1.43% higher than the average removal rate of *** of the mechanisms of sludge reduction revealed that,energy uncoupling metabolism and sludge decay were the main factors for sludge reduction inducing 43.13%and 49.65%less sludge,respectively,in *** fluorescence spectroscopy and SUVA analysis showed that the hydrolytic capacity of biofilm attached in FSC was stronger than those of SC,and the hydrolysis of EPS released more DOM contributed to lysis-cryptic growth *** additional,Bacteroidetes and Mizugakiibacter associated with sludge reduction were the dominant phylum and genus in ***,the effect of simultaneous in situ sludge reduction and pollutant removal in FSC-SBBR was better.

关键词： In situ sludge reduction Biofilm Composite floating spherical carriers Microbial community SBBR

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The Impacts of Different Bromide Concentrations and Advanced Oxidation Ways on the Bromate Generation

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Meteorological and Environmental Research 2015年第1期6卷 55-58页

作者： Yang Xiaoliang Jia Ruibao Sun Shaohua Song Wuchang jinan water supply and drainage monitoring center Shandong Province City water supply and drainage water Quality monitoring center

Taking reservoir water diverting from Yellow River as raw water, and using 5 m^3/h of pilot device, the impacts of different bromide concentrations and advanced oxidation ways on bmmate generation in effluent of ozone -upward flow BAC -sand filtration technology. Results showed that when bromine ion of raw water was about 100 μg/L, and ozone dosage was 2 mg/L, bromate exceeding risk existed in the effluent of ozone - upward flow BAC technology, and bromate content in the effluent reached 10 μg/L. Moreover, generation amount of bromate had certain linear rela- tionship with bromine ion of influent. Both dosing hydrogen peroxide and potassium permanganate could effectively inhibit bromate production, and there was no bromate generation in final effluent of the technology. Moreover, it also could improve the removal of major pollutants in the water by the combined process. Compared with advanced oxidation of hydrogen peroxide, potassium permanganate pre-oxidation could better control production costs.

关键词： Bromate Reservoir water from Yellow River Hydrogen peroxide Potassium permanganate Ozone China

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Adsorption Characteristics of the Powdered Activated Carbon on Pesticide in the water

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Meteorological and Environmental Research 2014年第12期5卷 53-56页

作者： Pan Zhangbin Song Wuchang Feng Guixue Jia Ruibao Sun Shaohua jinan water supply and drainage monitoring center Shandong Province City water supply and drainage water Quality monitoring center

The adsorption characteristics of the powdered activated carbon on four kinds of pesticides （ dichlorvos, chlorothalonil, lindane and chlorphyrifos） were studied, and the influential factors of adsorption effect were discussed. Results showed that the powdered activated carbon could effectively remove the above four kinds of pesticides. It was rapid adsorption period before 30 min, and removal rate has reached 90%. Adsorption kinetics of the powdered activated carbon on pesticides corresponded with quasi-two-level kinetic equation, and both Freundlich and Langmuir adsorption isotherms could simulate the adsorption process of the activated carbon on pesticide well. Competitive adsorption between small-molecule organics in the water diverting from Yellow River and Desticides on microDore of the activated carbon would occur.

关键词： Pesticide The powdered activated carbon Adsorption Natural organics Competitive adsorption China

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The Application of KMnO_4 Pre-oxidation in Emergency Treatment of High-algae Source water

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Meteorological and Environmental Research 2014年第11期5卷 49-51页

作者： Wang Zhanjin Pan Zhangbin Jia Ruibao Sun Shaohua jinan water and Wastewater monitoring center Shandong Province City water supply and drainage water Quality monitoring center

Mobile emergency pilot water plant was used to carry out pilot study of KMnO4 pre-oxidation enhanced coagulation treating high-algae source water. Research showed that the optimal dosages of coagulant and KMnO4 in the process were 6 and 0. 4- 0. 6 mg / L respectively. Under the dosage,removal rate of water turbidity after precipitation rose by 11% than simple coagulation,and removal rate of algae rose by 15%. Removal rates of total amount of odor and GSM by the process were respectively 73% and 59%. The removal rate of total amount of algae by KMnO4 preoxidation was 40%,and removal effect of THM precursors was obvious.

关键词： KMnO_4 pre-oxidation High-algae source water Enhanced coagulation THM precursors China

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Applications of nanogenerators for biomedical engineering and healthcare systems

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InfoMat 2022年第2期4卷 53-109页

作者： Wanli Wang Jinbo Pang Jie Su Fujiang Li Qiang Li Xiaoxiong Wang Jingang Wang Bergoi Ibarlucea Xiaoyan Liu Yufen Li Weijia Zhou Kai Wang Qingfang Han Lei Liu Ruohan Zang Mark HRümmeli Yang Li Hong Liu Han Hu Gianaurelio Cuniberti College of Electrical Engineering Qingdao UniversityQingdaoChina Collaborative Innovation center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong Institute for Advanced Interdisciplinary Research(iAIR)University of JinanJinanChina College of Electronic Information Qingdao UniversityQingdaoChina Department of Pediatric Surgery The Affiliated Hospital of Qingdao UniversityQingdaoChina College of Physics Qingdao UniversityQingdaoChina Institute for Materials Science and Max Bergmann center of Biomaterials Technische Universität DresdenDresdenGermany center for Advancing Electronics Dresden Technische Universität DresdenDresdenGermany College of Biological Science and Technology University of JinanJinanChina School of Chemistry and Chemical Engineering University of JinanShandongJinanChina College of Energy Soochow Institute for Energy and Materials InnovationsSoochow UniversitySuzhouChina Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province Soochow UniversitySuzhouChina Centre of Polymer and Carbon Materials Polish Academy of SciencesZabrzePoland Institute for Complex Materials IFW DresdenDresdenGermany Institute of Environmental Technology VŠB-Technical University of OstravaOstravaCzech Republic School of Information Science and Engineering University of JinanJinanChina Shandong Provincial Key Laboratory of Network Based Intelligent Computing University of JinanJinanChina State Key Laboratory of Crystal Materials Center of Bio&Micro/Nano Functional MaterialsShandong UniversityJinanChina College of Chemical Engineering China University of Petroleum(East China)QingdaoChina Dresden center for Computational Materials Science Technische Universität DresdenDresdenGermany The Dresden center for Intelligent Materials(DCIM) Technische Universität DresdenDresdenGermany

The dream of human beings for long living has stimulated the rapid development of biomedical and healthcare ***,conventional biomedical and healthcare devices have shortcomings such as short service life,large equipment size,and high potential safety ***,the power supply for conventional implantable device remains predominantly *** emerging nanogenerators,which harvest micro/nanomechanical energy and thermal energy from human beings and convert into electrical energy,provide an ideal solution for self-powering of biomedical *** combination of nanogenerators and biomedicine has been accelerating the development of self-powered biomedical *** article first introduces the operating principle of nanogenerators and then reviews the progress of nanogenerators in biomedical applications,including power supply,smart sensing,and effective ***,the microbial disinfection and biodegradation performances of nanogenerators have been ***,the protection devices have been discussed such as face mask with air filtering function together with real-time monitoring of human health from the respiration and heat ***,the nanogenerator devices have been categorized by the types of mechanical energy from human beings,such as the body movement,tissue and organ activities,energy from chemical reactions,and gravitational potential ***,the challenges and future opportunities in the applications of nanogenerators are delivered in the conclusive remarks.

关键词： biomedical engineering healthcare implantable devices nanogenerators self-powered devices sensors

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From the water sources of the Tibetan Plateau to the ocean:State of nutrients in the Changjiang linked to land use changes and climate variability

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Science China Earth Sciences 2022年第11期65卷 2127-2174页

作者： Jing ZHANG Guosen ZHANG Yanan DU Anyu ZHANG Yan CHANG Yingchun ZHOU Zhuoyi ZHU Ying WU Zaifeng ZHANG Sumei LIU State Key Laboratory of Estuarine and Coastal Research East China Normal UniversityShanghai 200241China Yangze River Estuary Survey Bureau of Hydrology and water Resource CWRCShanghai 200136.China KLATASDS-MOE School of StatisticsEast China Normal UniversityShanghai 200241China Nantong Environmental monitoring center Ministry of Ecology and EnvironmentNantong 226006China Key Laboratory of Marine Chemistry Theory and Technology Ocean University of ChinaQingdao 266100China School of Oceanography Shanghai Jiao Tong University Shanghai 200030China

Anthropogenic activity is an important driver of changes in the chemistry of nutrients(N,P,and Si)over watersheds at the sub-continental scale(e.g.,106km~2)and can markedly modify their seaward fluxes to the global *** the present study,we reviewed the current status of nutrient chemistry in Changjiang(Yangtze River)based on data collected through 11 expeditions along a river course spanning 4,500 km and 15–20 major tributaries during 1997–2016 as well as monthly monitoring at the river mouth since *** data were analyzed together with published results in the literature to synthesize the recent developments and current state of nutrients in the *** published results from the Qinghai-Tibetan Plateau head waters were included to realize the systematics of nutrients for the whole drainage ***,we showed that tributaries of the upper reaches of watersheds collectively determine the regime with high concentration and skewed species ratio of nutrients in the Changjiang mainstream,producing profound effects over a water course of 2,000–2,500 km further downstream and until the river ***,using data across the Three Gorges Reservoir(TGR)during 2003–2016,we evaluated the trapping and/or amplifying effects of the Three Gorges Dam(TGD)on nutrient ***-influenced river delta contributed an additional 20%dissolved inorganic phosphorus and 5–10%dissolved inorganic nitrogen and dissolved silicates to the seaward flux,dramatically affecting the stoichiometry of nutrients at the river ***,based on compiled data on supply and export,legacy nutrients were *** nitrogen and phosphorus are in the accumulation phase over the watersheds,and the legacy nutrient fluxes are much higher than the annual riverine seaward ***,we demonstrated that the seaward fluxes of anthropogenic nutrients from the Changjiang exceed those from other top 10 largest rivers on this planet,which can be attributed to land use changes

关键词： Changjiang Nutrient chemistry Species ratio Fluxes Global river systems Hysteresis effect Legacy contributions

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Nursing Care and Causative Analysis of Grade IV Capsular Contracture Following Breast Cancer Expander Implantation

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Advances in Breast Cancer Research 2024年第1期13卷 1-9页

作者： Rong Chen Nan Zhang Huiting Zhang State Key Laboratory of Oncology in South China Collaborative Innovation Center for Cancer Medicine Department of Breast Cancer Sun Yat-sen University Cancer Hospital Guangzhou China

Objective: By observing the treatment and nursing care of a patient with Grade IV capsular contracture following breast cancer expander implantation and subsequent Stage II reconstruction, we aim to analyze the reasons for the formation of capsular contracture after Stage I expander implantation and prevent its recurrence following Stage II reconstruction. Methods: In May 2020, the patient noticed an increase in the size of a breast mass. In August, she underwent AC-THP neoadjuvant chemotherapy, followed by a “right breast-conserving nipple-areolar subglandular excision + right axillary lymph node dissection + expander implantation” surgery in November 2020. Radiation therapy began in January 2021. During radiation therapy, the patient experienced severe breast hardening, distortion, tenderness, and was diagnosed with Grade IV capsular contracture. To relieve the capsular contracture, the patient underwent a “contracted capsule incision and release procedure + removal of the right breast expander + right breast implantation” surgery in July 2021. Postoperatively, measures were taken to prevent incision infection, emphasizing aseptic techniques, ensuring smooth negative pressure drainage, reducing skin flap tension, monitoring skin flap blood supply, actively preventing subcutaneous effusion and hematoma, and applying appropriate compression dressings. Results: The patient was discharged after the removal of the drainage tube. During the postoperative follow-up at 3 and 6 months, there was no recurrence of capsular contracture, and the breast appeared full, upright, and relatively soft. There were no complications such as hematoma, infection, breast implant rupture, breast sagging, or displacement. The patient had a good outcome without additional financial or surgical burdens. Conclusion: The occurrence of Grade IV capsular contracture in the patient is generally related to infection after Stage I expander implantation, improper compression dressing, excessive salin

关键词： Breast Cancer Capsular Contracture Expander Implantation

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