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Effects of Diesel Concentration on the Thermal Conductivity,Specific Heat Capacity and Thermal Diffusivity of Diesel-Contaminated Soil

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Journal of Thermal Science 2024年第2期33卷 696-709页

作者： WU Yuhao WU yuefei LUO Gubai ZHANG Teng WANG Qing FAN Liwu song Xin YU Zitao Key Laboratory of Clean Energy and Carbon Neutrality of Zhejiang Province Zhejiang UniversityHangzhou310027China State Key Laboratory of Clean Energy Utilization Zhejiang UniversityHangzhou310027China Institute of Thermal Science and Power Systems School of Energy EngineeringZhejiang UniversityHangzhou310027China Center Environmental Protection Technology Company Limited Beijing100176China Institute of Soil Science Chinese Academy of SciencesNanjing210008China

High energy consumption is a serious issue associated with in situ thermal desorption(TD)remediation of sites contaminated by petroleum hydrocarbons(PHs).The knowledge on the thermophysical properties of contaminated soil can help predict accurately the transient temperature distribution in a remediation site,for the purpose of energy conservation.However,such data are rarely reported for PH-contaminated soil.In this study,by taking diesel as a representative example for PHs,soil samples with constant dry bulk density but different diesel mass concentrations ranging from 0% to 20% were prepared,and the variations of their thermal conductivity,specific heat capacity and thermal diffusivity were measured and analyzed over a wide temperature range between 0℃ and 120℃.It was found that the effect of diesel concentration on the thermal conductivity of soil is negligible when it is below 1%.When diesel concentration is below 10%,the thermal conductivity of soil increases with raising the temperature.However,when diesel concentration becomes above 10%,the change of the thermal conductivity of soil with temperature exhibits the opposite trend.This is mainly due to the competition between soil minerals and diesel,because the thermal conductivity of minerals increases with temperature,whereas the thermal conductivity of diesel decreases with temperature.The analysis results showed that,compared with temperature,the diesel concentration has more significant effects on soil thermal conductivity.Regardless of the diesel concentration,with the increase of temperature,the specific heat capacity of soil increases,while the thermal diffusivity of soil decreases.In addition,the results of a control experiment exhibited that the relative differences of the thermal conductivity of the soil samples containing the same concentration of both diesel and a pure alkane are all below 10%,indicating that the results obtained with diesel in this study can be extended to the family of PHs.A theoretical prediction model was proposed based on c

关键词： contaminated soil diesel concentration thermal conductivity specific heat capacity thermal diffusivity thermal desorption fractal model

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Advanced Reclamation of Hairwork Dyeing Effluent Using a Novel Tight Nanofiltration Membrane with Improved Performance

Advanced Reclamation of Hairwork Dyeing Effluent Using a Nov...

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河南省化学会2020年学术年会

作者： Xueshuang Bai yuefei song Yueke Sun Qihua Hu Yongxin Wang School of Environment Henan Key Laboratory for Environmental Pollution Control Key Laboratory of Yellow River and Huai River Water Environmental and Pollution Control Ministry of Education Henan Normal University

Considering the need for a sustained and steady increase in hairwork dyeing effluent (HDE)reuse rate,in this study,a novel tight,negatively charged thin-film nanocomposite (TFN)membrane with custom-tailoring removal property from real HDE after preoptimized dual-stage pretreatment was fabricated.It was prepared by interfacial polymerization (IP) method on top of the PES substrate with m-phenylenediamine aqueous solution incorporating M-tolidine-H (MTH)and carbon quantum dots (CQDs) and trimesoyl chloride organic phase in n-hexane (see Fig.1).Here,0.15 wt.%and 150 mg/L were considered to be the optimum loading content of MTH and GQDs for fabricating TFN membranes on the basis of the perm-selectivity data of those resultant membranes containing both dopant contents from 0 to 0.66 wt.%and 300 mg/L,respectively.Compared with bare thin-film composite membrane,the permeate flux and salt rejection of TFN improved by 35%and concurrently maintained at 90%or more.After flocculation (tree-shaped cellulose-based CLF-10)-ultrafiltration hybrid pretreatment,the ideal removal efficiency of this resultant TFN membrane module was determined with permeate recovery ratio up to 95%under the circumstance of lower operating pressure and significantly mitigated membrane fouling.At this point,and the final cleaner reuse water only contained 227 mg·Lof total dissolved solids,35.1 mg CaCO·Lof total hardness and 1.69 mg·Lof DOC.Furthermore,we verified the satisfying long-term operation stability and anti-fouling performance of TFN membrane,realizing the advanced reclamation of real HDE.

关键词： Nanofiltration Hairwork dyeing effluent Carbon quantum dots Wastewater reclamation

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Novel Composite Membranes Incorporating Quaterniazed Carbon-based Nanoparticles for Efficient Removal of Emerging Contaminants

Novel Composite Membranes Incorporating Quaterniazed Carbon-...

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河南省化学会2020年学术年会

作者： Yongxin Wang yuefei song Xifan Li Yueke Sun Xueshuang Bai School of Environment Henan Key Laboratory for Environmental Pollution Control Key Laboratory of Yellow River and Huai River Water Environmental and Pollution Control Ministry of Education Henan Normal University

As pollutant constituents getting complicated and the ever increasing public demand for water quality,some deep/ultra-deep treatment technologies have attracted more attention of researchers to continuously improve wastewater treatment efficiency on the basis of upgrading standards.In this work,two novel positively-charged thin-film nanocomposite (TFN)membranes were successfully prepared by incorporating different quaternized carbon-based nanoparticles (QCBNPs) into PEI aqueous solution (0.5 wt.%) via interfacial polymerization (IP),as illustrated in Fig.1,in order to improve their isoelectric point and hydrophilic properties.Specifically,0.04 g·Land 0.2 g·Lwere identified as the optimal doping content of quaternized graphene oxide (QGO) and quaternized carbon quantum dots (QCQDs) for preparing TFN membranes on the basis of their perm-selectivity orthogonal experimental results.Experiments showed that the doping of hydrophilic quaternized monomers could not only create new fast water transport channels,but also enhance selective separation of both resultant TFN membranes.In terms of those two CBNPs,QCQDs manifested superior permeate flux (25 LMH·bar) and great rejection (all greater than 90%) of four types of pharmaceuticals (PhACs) with molecular weights lower than 300 Da and different ionization (p Ka) and hydrophobicity (log K).In addition,the as-prepared TFN membrane had an outstanding antifouling property when bovine serum albumin was selected as the model foulant.Therefore,this work proposed a viable strategy for fabricating positively charged TFN membrane towards efficient removal of emerging small-sized organic contaminants.

关键词： Nanofiltration Carbon-based nanoparticles Positive charged membrane Enhanced performance

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The fabricated PCS/PAN NFMs' permeation and selectivity performance for anionic dyes removal

The fabricated PCS/PAN NFMs' permeation and selectivity perf...

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河南省化学会2018年学术年会

作者： yuefei song Tiemei Li Wenbo Qin Yueke Sun Jing Fan School of Environment Henan Key Laboratory for Environmental Pollution ControlKey Laboratory of Yellow River and Huai River Water Environmental and Pollution ControlMinistry of EducationHenan Normal University

The regulation for preparation of phosphorylated chitosan(PCS)/polyacrylonitrile(PAN) membranes with tunable surface charge and enhanced selectivity of charged anionic dyes in standard conditions was discussed systematically, by manipulating of phosphorus content or substituted degree of phosphate group in the synthetic PCS precursors. Anionic dyes such as Methylene blue, Methyl orange and Alizarine yellow R were used as model solutes for studying the charged organic compounds’ removal performance by the fabricated membranes. Main structure and characteristics, such as molecular weights and maximal absorption wave-lengths(λmax) of these dyes adopted are 319.9, 327.3 and 287.2 g·mol-1;664, 464 and 374 nm, respectively. Investigation of surface charge effect on the NFM1 and NFM4 membranes separating performance for the anionic dyes was carried out. The cross-flow nanofiltration(NF) tests were carried out at a dye concentration of 0.1 g·L-1, pressure of 0.8 MPa, pH of 6.8±0.05, and temperature of 25±0.03 °C. As mentioned above, the membranes fluxes for all dyes are close to each other. Rejections acquired from NFM1 and NFM4 for methyl orange and methylene blue are 52. 6% and 64.2%, 49.5% and 57.2%, while alizarine yellow R are 71.9% and 87.5%, respectively, affirming the vital role of Donnan exclusion in the removal mechanism. As can be seen in Table 1, molecular weights of these adopted dyes are similar, but the polarities or negative charges of the indicative functional groups(-COO-for alizarine yellow R,-SO3-for methyl orange and –C=S+ for methylene blue) show significant difference [1].

关键词： Nanofiltration Membrane performance Dyeing removal Selectivity

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Ultrafiltration Membrane Performance in Treatment for Dyeing Effluent from Hairwork Industry on High Filtrate Recovery

Ultrafiltration Membrane Performance in Treatment for Dyeing...

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河南省化学会2018年学术年会

作者： Qihua Hu Tiemei Li yuefei song Wenbo Qin Yueke Sun Huilin Wan Jing Fan School of Environment Henan Key Laboratory for Environmental Pollution ControlKey Laboratory of Yellow River and Huai River Water Environmental and Pollution ControlMinistry of EducationHenan Normal University

High water consumption and large amounts of discharged pollutants are the two critical environmental problems in hairwork industry[1]. Dying effluent, as a primary contributor of the hairwork wastewater, contains a high concentration of color, COD and NH-N. In order to test and verify the feasibility of ultrafiltration(UF) treatment for dying effluent, sedimentation-microfiltration pretreatment and UF treatment experiment was performed. The influence of UF system recovery, which ranges from 50% to 90%, on membrane performance and removal rates of multiple pollutants were investigated to determine an ideal system recovery. The results showed that both UF flux and removal rate declined with the increase of system recovery. UF flux remains a relatively high level until 10.7% of the total decrease occurred when recovery reaches 68%. The removal rates of pollutants peaked at 52% of system recovery, and then significantly declined at 64% of system recovery. UF treatment showed a good removal for colority, UV254 and COD, but an inadequate rejection for electrical conductivity and ammonia nitrogen even at low system recovery. Removal of particle matters had a higher tendency for large particles(>15 um) than small particles(4-15 um), and this tendency became more and more evident with the increase of system recovery(seen in Fig.1). Based on the results, 64% was selected as the optimal system recovery to balance the operating efficiency and pollutant removal of UF treatment.

关键词： Membrane performance Dyeing effluent Water reuse Filtrate recovery

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一种基于AdaBoost模型的区块链异常交易检测方案

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信息网络安全 2024年第1期 24-35页

作者：宋玉涵祝跃飞魏福山中国人民解放军信息工程大学网络空间安全学院郑州450001

针对区块链系统加密货币交易记录中存在的盗币异常行为,文章基于Ada Boost模型提出一种具有隐私保护功能的异常交易检测方案。该方案采用加法同态加密和矩阵混淆技术,在有效识别并预测异常交易的同时,保证交易数据的隐私性。此外,在云... 详细信息

针对区块链系统加密货币交易记录中存在的盗币异常行为,文章基于Ada Boost模型提出一种具有隐私保护功能的异常交易检测方案。该方案采用加法同态加密和矩阵混淆技术,在有效识别并预测异常交易的同时,保证交易数据的隐私性。此外,在云外包环境中设计实现方案的底层协议,并证明了方案的正确性和隐私保护性质。与同类协议相比,该方案在保证隐私性的同时,具有较高的检测准确率和召回率,平均每条记录的检测时间为毫秒级,适用于真实加密货币交易的检测场景。

关键词：隐私保护机器学习异常检测同态加密

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进水水质对纳滤膜苦咸水软化的分离性能

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化工学报 2017年第8期68卷 3133-3140页

作者：宋跃飞赵果李铁梅秦文博河南师范大学环境学院黄淮水环境与污染防治教育部重点实验室河南省环境污染控制重点实验室河南新乡453007

针对黄淮地区苦咸水,构建了小试级别的纳滤膜法软化系统,并开展了包括pH、总溶解固体含盐量(TDS)和总有机碳(TOC)等进水水质对DL、DK型纳滤膜的软化分离实验。结果表明,pH为3~10、TDS为1317~5926 mg·L^(-1)和TOC为2.72~12.24 mg·L^(-1... 详细信息

针对黄淮地区苦咸水,构建了小试级别的纳滤膜法软化系统,并开展了包括pH、总溶解固体含盐量(TDS)和总有机碳(TOC)等进水水质对DL、DK型纳滤膜的软化分离实验。结果表明,pH为3~10、TDS为1317~5926 mg·L^(-1)和TOC为2.72~12.24 mg·L^(-1)的进水条件下,DL和DK纳滤膜比通量随pH的增加分别呈先上升后下降和缓慢下降的趋势,随进水TDS和TOC的增加呈整体下降趋势,而纳滤膜对硬度离子(Mg^(2+)和Ca^(2+))的截留率均呈明显的上升趋势。DL膜运行至267 h时,膜比通量下降幅度超过10%,进行化学清洗,酸洗后膜比通量恢复率达到85.05%,酸洗加碱洗后该值高达97.2%,结合扫描电子显微镜和原子力显微镜表征结果,可知化学清洗对膜面污染有较好的去除效果。

关键词：纳滤分离结垢进水水质长期运行

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搅拌棒吸附萃取涂层研制进展

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化学通报 2018年第1期81卷 12-20页

作者：李铁梅宋跃飞樊静河南师范大学环境学院黄淮水环境与污染防治省部共建教育部重点实验室河南省环境污染控制重点实验室新乡453007

搅拌棒吸附萃取(SBSE)是20世纪90年代末发展起来的一种新型无溶剂样品前处理技术,具有固定相体积大、萃取容量高、无需外加搅拌子、可避免竞争性吸附、能在自身搅拌的同时实现萃取富集等优点,已广泛应用于环境、食品和生物等复杂样品中... 详细信息

搅拌棒吸附萃取(SBSE)是20世纪90年代末发展起来的一种新型无溶剂样品前处理技术,具有固定相体积大、萃取容量高、无需外加搅拌子、可避免竞争性吸附、能在自身搅拌的同时实现萃取富集等优点,已广泛应用于环境、食品和生物等复杂样品中目标物质的痕量分析。涂层是SBSE技术的核心,决定了萃取选择性和容量。本文简要介绍了SBSE涂层的萃取原理、萃取解吸模式及其影响因素,重点阐述了近年SBSE涂层制备技术与方法,探讨了SBSE涂层发展中的不足,并展望了其发展趋势。

关键词：样品前处理搅拌棒吸附萃取固相微萃取涂层

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扫描电镜原位激光加热与高温成像研究

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电子显微学报 2024年第2期43卷 200-207页

作者：柴松吕俊霞李隆玉张跃飞张泽北京工业大学材料与制造学部北京100124 浙江大学材料科学与工程学院浙江杭州310027

扫描电子显微镜(SEM)原位研究材料高温组织与力学性能是近年来材料领域关注的一个重要方向,在扫描电子显微镜内进行原位加热实验可以直接揭示材料微观组织、力学性能与温度之间的关系。然而传统的电流加热方式在样品温度超过800℃时金... 详细信息

扫描电子显微镜(SEM)原位研究材料高温组织与力学性能是近年来材料领域关注的一个重要方向,在扫描电子显微镜内进行原位加热实验可以直接揭示材料微观组织、力学性能与温度之间的关系。然而传统的电流加热方式在样品温度超过800℃时金属材料会释放出大量热电子,无法获得高质量图像。本研究开发了一种与SEM联用的激光加热台,该加热台使用激光作为加热源,可以对材料进行快速加热以及高分辨原位结构表征。本文详细介绍了激光加热台的设计原理并对加热台温度场进行有限元仿真模拟及分析,以镍基单晶高温合金为例,实现了1370℃原位高温成像,验证了该装置的主要功能。

关键词：扫描电子显微镜激光加热台高温成像原位表征

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“实践感”与理解个体行动——对布迪厄实践理论的分析

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武汉科技大学学报（社会科学版） 2011年第1期13卷 75-79,109页

作者：宋跃飞北京大学社会学系北京100871 内蒙古大学社会学系内蒙古呼和浩特010070

布迪厄在把握"实践感"的运作逻辑时,运用新创制的社会学分析概念和分析单位,不仅帮助布迪厄从全新的角度展现了实践的模糊的、总体的、不确定的特征,也使他能够通过"构建某种类似于主题的东西",把握住"实践感",从而为我们理解日常生活... 详细信息

布迪厄在把握"实践感"的运作逻辑时,运用新创制的社会学分析概念和分析单位,不仅帮助布迪厄从全新的角度展现了实践的模糊的、总体的、不确定的特征,也使他能够通过"构建某种类似于主题的东西",把握住"实践感",从而为我们理解日常生活中的行动者及其行动开辟了一条崭新的思路。

关键词：布迪厄实践逻辑个体行动实践理论

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