检索结果-南通市图书馆

A novel advanced oxidation process to degrade organic pollutants in wastewater:Microwave-activated persulfate oxidation

引用

Journal of Environmental Sciences 2009年第9期21卷 1175-1180页

作者： yang shiying WANG Ping yang Xin WEI Guang ZHANG Wenyi SHAN Liang Key Laboratory of Marine Environment & Ecology Ministry of Education Qingdao 266100 China. College of Environmental Science and Engineering Ocean University of China Qingdao 266100 China. Qingdao Huashan Biochemical Company Limited Qingdao 266216 China

This article, for the first time, provides a novel advanced oxidation process based on sulfate radical （SO^4·-） to degrade organic pollutants in wastewater： microwave （MW）-activated persulfate oxidation （APO） with or without active carbon （AC）. Azo dye acid Orange 7 （AO7） is used as a model compound to investigate the high reactivity of MW-APO. It is found that AO7 （up to 1000 mg/L） is completely decolorized within 5-7 min under an 800 W MW furnace assisted-APO. In the presence of chloride ion （up to 0.50 mol/L）, the decolorization is still 100% completed, though delayed for about 1-2 min. Experiments are made to examine the enhancement by AC. It is exciting to find that the 100% decolorization of AO7 （500 mg/L） is achieved within 3 min by MW-APO using 1.0 g/L AC as catalyst, while the degradation efficiency maintains at 50% by MW energy without persulfate after about 5 min. Besides the destruction of visible light chromophore band of AO7 （484 nm）, during MW-APO, two bands in the ultraviolet region （228 nm and 310 nm） are rapidly broken down. The removal of COD is about 83%-95% for 500 mg/L AO7. SO^4·- is identified with quenching studies using specific alcohols. Both SO^4·- and ·OH could degrade AO7, but SO^4·- plays the dominant role. In a word, MW-APO AC is a new catalytic combustion technology for destruction of organic contamination even for high concentration.

关键词： microwave-activated persulfate oxidation active carbon sulfate radical advanced oxidation technology

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Involvements of chloride ion in decolorization of Acid Orange 7 by activated peroxydisulfate or peroxymonosulfate oxidation

引用

Journal of Environmental Sciences 2011年第11期23卷 1799-1807页

作者： Ping Wang shiying yang Liang Shan Rui Niu Xueting Shao Key Laboratory of Marine Environment and Ecology Ministry of EducationQingdao 266100China College of Environmental Science and Engineering Ocean University of ChinaQingdao 266100China Department of Civil and Structural Engineering The Hong Kong Polytechnic UniversityKowloonHong KongChina

The effects of chloride anion （Cl-）（up to 1.0 mol/L） on the decolorization of a model compound,azo dye Acid Orange 7 （AO7）,by sulfate radical （SO4-） based-peroxydisulfate （PS） or peroxymonosulfate （PMS） oxidation under various activated conditions （UV 254 nm /PS,Thermal （70°C/PS,UV 254 nm /PMS,Co 2＋ /PMS） were *** and NH4 ＋ were used as quenching reagents to determine the contributions of active chlorine species （dichloride radical （Cl2-.） and hypochlorous acid （HClO））.The results indicated that the effects of Cl- on the reaction mechanism were different under various activated *** UV/PS and Thermal/PS,the inhibition tendency became more clear as the Cl- concentration increased,probably due to the reaction between Cl- and SO4-.and the generation of Cl2-.or *** UV/PMS,Cl- did not exhibit inhibition when the concentration was below 0.1 mol/*** Cl- concentration reached to 1.0 mol/L,the decolorization rate of AO7 was,however,accelerated,possibly because PMS directly reacts with Cl- to form *** Co2＋ /PMS,Cl- exhibited a significant inhibiting effect even at low concentration （ 0.01 mol/L）.When Cl- concentration exceeded 0.1 mol/L,the activation of PMS by Co 2＋ was almost completely *** this condition,HClO maybe played a major role in decolorization of *** results implicated that chloride ion is an important factor in SO4-.-based degradation of organic contamination in chloride-containing water.

关键词： chloride anion activated peroxydisulfate oxidation activated peroxymonosulfate oxidation radicals decolorization

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Rapid and simple spectrophotometric determination of persulfate in water by microwave assisted decolorization of Methylene Blue

引用

Journal of Environmental Sciences 2015年第5期27卷 235-239页

作者： Lajuan Zhao shiying yang Leilei Wang Chao Shi Meiqing Huo Yan Li Key Laboratory of Marine Environment and Ecology Ministry of Education College of Environmental Science and Engineering Ocean University of China Qingdao Shuiqingmuhua Environmental Engineering Co. Ltd.

A rapid and simple method for determination of persulfate in aqueous solution was developed. The method is based on the rapid reaction of persulfate with Methylene Blue（MB） via domestic microwave activation, which can promote the activation of persulfate and decolorize MB quickly. The depletion of MB at 644 nm（the maximum absorption wavelength of MB） is in proportion to the increasing concentration of persulfate in aqueous solution. Linear calibration curve was obtained in the range 0-1.5 mmol/L, with a limit of detection of 0.0028 mmol/L. The reaction time is rapid（within 60 sec）, which is much shorter than that used for conventional methods. Compared with existing analytical methods, it need not any additives, especially colorful Fe2＋, and need not any pretreatment for samples, such as p H adjustment.

关键词： Decolorization Methylene Blue Microwave activation Persulfate Spectrophotometric determination

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Structural landscape on a series of rhein:Berberine cocrystal salt solvates:The formation,dissolution elucidation from experimental and theoretical investigations

引用

Chinese Chemical Letters 2022年第6期33卷 3207-3211页

作者： Dezhi yang Hongjuan Wang Qiwen Liu Penghui Yuan Ting Chen Li Zhang shiying yang Zhengzheng Zhou yang Lu Guanhua Du Beijing City Key Laboratory of Polymorphic Drugs Center of Pharmaceutical PolymorphsInstitute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China Department of Hygiene Inspection and Quarantine Science School of Public HealthSouthern Medical University(Guangdong Provincial Key Laboratory of Tropical Disease ResearchNMPA Key Laboratory for Safety Evaluation of Cosmetics)Guangzhou 510515China Beijing City Key Laboratory of Drug Target and Screening Research National Center for Pharmaceutical ScreeningInstitute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China

The specific crystalline form of a compound remarkably affects its physicochemical ***,a detailed analysis of the structural features and intermolecular interactions of a multi-component crystal is feasible to understand the relationships among the structure,physicochemical properties and the formation *** the present study,three novel cocrystal salt solvates of rhein and berberine were reported for the first *** solid characterizations and theoretical computations based on density functional theory(DFT)were carried out to demonstrate the intermolecular *** theoretical computation shows that the strongest interaction existed between berberine cation and rhein anion,and the electrostatic interaction play a dominant ***,no salt bond was observed between *** intrinsic dissolution rate analysis in water shows that the monohydrate exhibits 17 times enhancement in comparison with *** rhein and berberine combined in ionic state in cocrystal salt is the main reason for the solubility *** paper suggests that the interactions between the different components can be visualized and qualitatively and quantitatively analyzed by theoretical computation,which is helpful to understand the relationship between stereochemical structure and physicochemical properties of multi-component complex.

关键词： Cocrystal Rhein Berberine Theoretical computation Energy decomposition analysis Solubility

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Anti-inflammatory Effects and Mechanisms of Rhein, an Anthraquinone Compound, and Its Applications in Treating Arthritis: A Review

引用

Natural Products and Bioprospecting 2020年第6期10卷 445-452页

作者： Hongjuan Wang Dezhi yang Li Li shiying yang Guanhua Du yang Lu Beijing Key Laboratory of Polymorphic Drugs Center of Pharmaceutical PolymorphsInstitute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China Beijing Key Laboratory of Drug Targets Identification and Drug Screening National Center for Pharmaceutical ScreeningInstitute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China

Inflammation is a defensive response of living tissues to damaging agents,which exists in two forms,acute inflammation and chronic inflammation,and chronic inflammation is closely related to ***,the commonly prescribed anti-inflammatory medications are greatly limited by high incidence of gastrointestinal erosions in the clinical ***,a bioactive constituent of anthraquinone,exhibits excellent anti-inflammatory activities and therapeutic effects on arthritis with less gastrointestinal *** there are numbers of studies on anti-inflammatory effects and mechanisms of rhein in the last few decades,to the best of our knowledge,only a few review articles pay attention to the interactive relationships of rhein on multiple inflammatory signaling pathways and cellular processes from a comprehensive ***,we summarized anti-inflammatory effects and mechanisms of rhein and its practical applications in the treatment of arthritis,thereby providing a reference for its basic researches and clinical applications.

关键词： Rhein Anthraquinone Anti-inflammatory Arthritis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

An innovative rhein-matrine cocrystal: Synthesis, characterization,formation mechanism and pharmacokinetic study

引用

Chinese Chemical Letters 2023年第2期34卷 546-549页

作者： Hongjuan Wang Dezhi yang Wen Zhang Junke Song Ningbo Gong Mingchao Yu shiying yang Baoxi Zhang Qiwen Liu Guanhua Du yang Lu Beijing Key Laboratory of Polymorphic Drugs Center of Pharmaceutical PolymorphsInstitute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China Beijing Key Laboratory of Drug Targets Identification and Drug Screening National Center for Pharmaceutical ScreeningInstitute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China

Rhein(Rhe), an anthraquinone derivative, exhibits excellent anti-inflammatory effects and other pharmacological activities, but its clinical application remains limited due to poor solubility. The present work aims at the improvement of solubility and oral bioavailability of Rhe through cocrystal formation. For this purpose, Rhe and matrine(Mat) were selected as pharmaceutical ingredient(API) and cocrystal former(CCF), respectively, and the Rhe-Mat cocrystal was synthesized and characterized by single crystal X-ray diffraction(SXRD), powder X-ray diffraction(PXRD), thermogravimetric analysis(TGA), differential scanning calorimetry(DSC). The formation mechanism of Rhe-Mat cocrystal was elucidated by molecular surface electrostatic potential(MSEP). It is worth mentioning that the 50-fold increment of dissolution in vitro was observed in pure water in the form of Rhe-Mat cocrystal. Furthermore, the in vivo studies revealed that Rhe-Mat cocrystal indicated the faster absorption rate and the higher peak blood concentration than the pure Rhe. Hence, it can be concluded that current study successfully improved the solubility and oral bioavailability of Rhe.

关键词： Rhein Matrine Cocrystal Poor solubility Molecular surface electrostatic potential

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Screening, Characterization and Evaluation of Mangiferin Polymorphs

引用

Natural Products and Bioprospecting 2020年第4期10卷 187-200页

作者： shiying yang Qi Zhou Baoxi Zhang Li Zhang Dezhi yang Haiguang yang Guanhua Du yang Lu Beijing Key Laboratory of Polymorphic Drugs Institute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China Beijing Key Laboratory of Drug Targets and Screening Research Institute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China

Mangiferin is a compound with many pharmacological activities and exists in many natural *** and hydrate of mangiferin have been reported separately in two literatures,but the polymorphism of this compound has not been realized until this *** this study,polymorph screening of mangiferin has been carried out and five forms have been obtained including three new forms never *** solid state characterization methods,such as powder X-ray diffraction,differential scanning calorimetry and thermogravimetry,are used to identify and characterize all of mangiferin *** comparison of the crystallographic data and hirshfeld surface analysis were first reported for mangiferin anhydrous and ***,the studies on stability,transformation and solubility have been undertaken,the results prompt that form V can be used as the dominant polymorph for the development of innovative pharmaceuticals.

关键词： Mangiferin Polymorph screening Characterize Stability Solubility

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

零价铝表面物相转变及影响污染物去除的作用机制

引用

化学进展 2023年第7期35卷 1030-1039页

作者：杨世迎杨震海洋环境与生态教育部重点实验室青岛266100 山东省海洋环境地质工程重点实验室青岛266100 中国海洋大学环境科学与工程学院青岛266100

零价铝(Zero-valent aluminum,ZVAl)在气相和液相介质中都容易被氧化,这会使得作为“电子库”的单质Al外部覆盖一层(氢)氧化物外壳。该外壳通常会由结构各异的Al2O3、AlOOH、Al(OH)3等物相组成。随着环境条件的改变,组成外壳的各物相间... 详细信息

零价铝(Zero-valent aluminum,ZVAl)在气相和液相介质中都容易被氧化,这会使得作为“电子库”的单质Al外部覆盖一层(氢)氧化物外壳。该外壳通常会由结构各异的Al2O3、AlOOH、Al(OH)3等物相组成。随着环境条件的改变,组成外壳的各物相间会发生转变,且同一物相的不同晶型间也会发生相变,最终皆会使得ZVAl整体性能改变。目前各领域学者对ZVAl的处理皆可看作是对ZVAl原表面成分进行的不同程度调控。在污染物降解领域中,虽已有研究证明ZVAl可凭借其强还原能力有效降解污染物,但目前研究仅仅关注于表面固有(氢)氧化物从而活化ZVAl,忽略了表面各物相间的转化与联系,这难以系统明确ZVAl在降解污染物过程中的表面氧化物转变对其还原性能的影响。然而,全面了解组成ZVAl表面物相的各类氧化物结构、性质特别是物相间的转变过程至关重要,可为ZVAl与污染物的界面反应过程和作用机制研究及ZVAl的定向调控提供理论基础。因此,本文首次从ZVAl表面物相的类型、结构、性质以及物相转变的作用机理角度出发,以目前国内外涉及ZVAl基材料的能源燃料、防腐涂料、亲疏水材料等相关应用为理论依据,对ZVAl基材料表面氧化物转变的作用机制进行综述、展望,以期促进污染物降解领域中ZVAl的研究,使其表面调控向目标性能方向发展。

关键词：零价铝 (氢)氧化物物相转变污染物降解表面作用机制

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Optimized solubility and bioavailability of genistein based on cocrystal engineering

引用

Natural Products and Bioprospecting 2023年第1期13卷 450-463页

作者： Zhipeng Wang Qi Li Qi An Lixiang Gong shiying yang Baoxi Zhang Bin Su Dezhi yang Li Zhang yang Lu Guanhua Du Beijing City Key Laboratory of Polymorphic Drugs Center of Pharmaceutical PolymorphsInstitute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050People’s Republic of China Beijing City Key Laboratory of Drug Target and Screening Research National Center for Pharmaceutical ScreeningInstitute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050People’s Republic of China Shandong Soteria Pharmaceutical Co. Ltd.Laiwu 271100China

With various potential health-promoting bioactivities,genistein has great prospects in treatment of a series of complex diseases and metabolic syndromes such as cancer,diabetes,cardiovascular diseases,menopausal symptoms and so ***,poor solubility and unsatisfactory bioavailability seriously limits its clinical application and market *** optimize the solubility and bioavailability of genistein,the cocrystal of genistein and piperazine was prepared by grinding assisted with solvent based on the concept of cocrystal *** a series of analytical techniques including single-crystal X-ray diffraction,powder X-ray diffraction,Fourier transform infrared spectroscopy,differential scanning calorimetry and thermogravimetric analysis,the cocrystal was characterized and ***,structure analysis on the basis of theoretical calculation and a series of evaluation on the stability,dissolution and bioavailability were carried *** results indicated that the cocrystal of genistein and piperazine improved the solubility and bioavailability of *** with the previous studies on the cocrystal of genistein,this is a systematic and comprehensive investigation from the aspects of preparation,characterization,structural analysis,stability,solubility and bioavailability *** a simple,efficient and green approach,cocrystal engineering can pave a new path to optimize the pharmaceutical properties of natural products for successful drug formulation and delivery.

关键词： Genistein Piperazine Cocrystal Solubility Bioavailability

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Efficient magnetic capture of PE microplastic from water by PEG modified Fe_(3)O_(4)nanoparticles:Performance,kinetics,isotherms and influence factors

引用

Journal of Environmental Sciences 2025年第1期147卷 677-687页

作者： Yifan Zhang Jingjing Duan Ruiqian Liu Evangelos Petropoulos Yanfang Feng Lihong Xue Linzhang yang shiying He College of Resources and Environmental Sciences Nanjing Agricultural UniversityNanjing 210095China Key Laboratory of Agro-Environment in Downstream of yangze Plain Ministry of Agriculture and Rural AffairsInstitute of Agricultural Resources and EnvironmentJiangsu Academy of Agricultural SciencesNanjing 210014China School of Engineering Newcastle UniversityNewcastle upon Tyne NE17RUUK Stantec UK Newcastle upon Tyne NE13DYUK

Due to their resistance to degradation,wide distribution,easy diffusion and potential uptake by organisms,microplastics(MPs)pollution has become a major environmental *** this study,PEG-modified Fe_(3)O_(4)magnetic nanoparticles demonstrated superior adsorption efficiency against polyethylene(PE)microspheres compared to other adsorbents(bare Fe_(3)O_(4),PEI/Fe_(3)O_(4)and CA/Fe_(3)O_(4)).Themaximumadsorption capacity of PEwas found to be 2203 mg/g by adsorption isotherm ***/Fe_(3)O_(4)maintained a high adsorption capacity even at low temperature(5℃,2163 mg/g),while neutral pH was favorable for MP *** presence of anions(Cl^(-),SO_(4)^(2-),HCO_(3)^(-),NO_(3)^(-))and of humic acids inhibited the adsorption of *** is proposed that the adsorption process was mainly driven by intermolecular hydrogen ***,the study demonstrated that PEG/Fe_(3)O_(4)can potentially be used as an efficient control against MPs,thus improving the quality of the aquatic environment and of our water resources.

关键词： Microplastic removal Adsorption Magnetic nanoparticles Wastewater Surface modification

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：