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Enhanced cross-flow filtration with flat-sheet ceramic membranes by titanium-based coagulation for membrane fouling control

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Frontiers of Environmental Science & Engineering 2022年第8期16卷 269-284页

作者： Xiaoman Liu Chang Tian Yanxia Zhao Weiying Xu dehua dong Kaimin Shih Tao Yan Wen Song School of Water Conservancy and Environment University of JinanJinan 250022China School of Environmental Science and Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353China School of Material Science and Engineering University of JinanJinan 250022China Department of Civil Engineering The University of Hong KongHong Kong 999077China

Application of ceramic membrane(CM)with outstanding characteristics,such as high flux and chemical-resistance,is inevitably restricted by membrane *** was an economical and effective technology for membrane fouling *** study investigated the filtration performance of ceramic membrane enhanced by the emerging titanium-based coagulant(polytitanium chloride,PTC).Particular attention was paid to the simulation of ceramic membrane fouling using four widely used mathematical *** show that filtration of the PTC-coagulated effluent using flat-sheet ceramic membrane achieved the removal of organic matter up to 78.0%.Permeate flux of ceramic membrane filtration reached 600 L/(m2$h),which was 10-fold higher than that observed with conventional polyaluminum chloride(PAC)*** PTC,fouling of the ceramic membrane was attributed to the formation of cake layer,whereas for PAC,standard filtration/intermediate filtration(blocking of membrane pores)was also a key fouling *** sum up,cross-flow filtration with flat-sheet ceramic membranes could be significantly enhanced by titanium-based coagulation to produce both high-quality filtrate and high-permeation flux.

关键词： Ceramic membrane Coagulation Polytitanium chloride Membrane fouling

Robust Joule-heating ceramic reactors for catalytic CO oxidation

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Journal of Advanced Ceramics 2022年第7期11卷 1163-1171页

作者： Fangsheng LIU Zhibo ZHAO Yuyao MA Yi GAO Jiajie LI Xun HU Zhengmao YE Yihan LING dehua dong School of Materials Science and Engineering University of JinanJinan 250022China School of Materials and Physics China University of Mining and TechnologyXuzhou 221116China

Joule-heating reactors have the higher energy efficiency and product selectivity compared with the reactors based on radiative *** Joule-heating reactors are constructed with electrically-conductive metals or carbon materials,and therefore suffer from stability issue due to the presence of corrosive or oxidizing gases during high-temperature *** this study,chemicallystable and electrically-conductive(La_(0.80)Sr_(0.20))_(0.95)FeO_(3)(LSF)/Gd_(0.1)Ce_(0.9)O_(2)(GDC)ceramics have been used to construct Joule-heating reactors for the first *** the advantage of the resistance decrease of the ceramic reactors with temperature increase,the ceramic reactors heated under current control mode achieved the automatic adjustment of heating to stabilize reactor *** addition,the electrical resistance of LSF/GDC reactors can be tuned by the content of the highconductive LSF in composite ceramics and ceramic density via sintering temperature,which offers flexibility to control reactor *** ceramic reactors with dendritic channels(less than 100μm in diameter)showed the catalytic activity for CO oxidation,which was further improved by coating efficient MnO_(2)nanocatalyst on reactor channel *** Joule-heating ceramic reactors achieved complete CO oxidation at a low temperature of 165℃.Therefore,robust ceramic reactors have successfully demonstrated effective Joule heating for CO oxidation,which are potentially applied in other high-temperature catalytic reactions.

关键词： Joule heating ceramic reactor microchannel reactor temperature control CO oxidation

Factors influencing Li^(+)migration in garnet-type ceramic electrolytes

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Journal of Materiomics 2019年第2期5卷 214-220页

作者： Yu Huan Yi Fan Yining Li Baoyi Yin Xun Hu dehua dong Tao Wei School of Material Science and Engineering University of Jinan336 Nanxinzhuang West RoadJinanShandong250022China

Garnet-type ceramic electrolyte with exceptionally high Li^(+) conductivity has attracted wide interests for the development of safe electrochemical ***,the factors affecting the ionic migration still deserve more *** this study,five garnet-types ceramic electrolyte were chosen to investigate the *** thermal behavior of garnet-type electrolyte during sintering was studied to achieve high *** electrochemical properties are correlated with crystal structure,migrating route and lattice *** influening factors were discussed to analyze the ionic migration in garnet-type ceramic electrolyte.

关键词： ceramic conductivity. electrolyte

Mn-N-P doped carbon spheres as an efficient oxygen reduction catalyst for high performance Zn-Air batteries

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Chinese Chemical Letters 2023年第1期34卷 177-181页

作者： Jiajie Li Shanbao Zou Jinzhen Huang Xiaoqian Wu Yue Lu Xundao Liu Bo Song dehua dong School of Materials Science and Engineering University of JinanJi nan 250022China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of TechnologyHarbin 150001China

Low-cost and efficient oxygen reduction reaction(ORR)electrocatalysts are the key to developing Zn-air batteries for renewable energy ***,the Mn-N-P doped carbon sphere was prepared through polymerization of hexachlorotripolyphosphazene(HCCP)and phloroglucinol,and then followed the calcination at 900°*** calculations demonstrated the introduction of Mn in N-P doped carbon could lower the dissociation barrier of O2into O*and promote the ORR through a *** asprepared catalysts exhibited a half-wave potential of 0.82 V *** and limiting current density of 5.2 m A/cm^(2)toward ORR,which was comparable to those of the commercial Pt/C *** addition,Zn-air batteries with 0.05 Mn-N-P-C catalysts showed a high specific capacity of 830 m Ah/gZnand excellent cycle *** facile approach demonstrated herein could be a solution to develop optimum non-precious metal catalysts for the application in cathodes of proton exchange membrane fuel *** study also provides new insight to design the catalysts of multi-heteroatom coordinated metal in the carbon matrix for both fundamental researches and practical applications.

关键词： Oxygen reduction reaction Zn-air batteries Transition metal Doped carbon spheres

基于滑动分块百分位数Bootstrap法的风电功率概率区间预测

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太阳能学报 2019年第2期40卷 430-437页

作者：杨锡运张璜关文渊董德华华北电力大学控制与计算机工程学院北京102206 中船电子科技有限公司北京100070

提出一种基于非参数滑动分块百分位数Bootstrap法(MBPB)的风电功率概率区间预测方法。由于风功率数据存在显著的时间相依结构,该方法首先对预测功率进行等间隔划分,再以某区间内的预测误差序列为样本,借助滑动分块Bootstrap法(MBB)抽样... 详细信息

提出一种基于非参数滑动分块百分位数Bootstrap法(MBPB)的风电功率概率区间预测方法。由于风功率数据存在显著的时间相依结构,该方法首先对预测功率进行等间隔划分,再以某区间内的预测误差序列为样本,借助滑动分块Bootstrap法(MBB)抽样产生多个伪样本,然后对伪样本数据通过滑动分块百分位Bootstrap法和四分位法相结合的统计推断生成一定置信水平下的误差上下限,进而得到该预测功率段内的概率预测区间。同时建立包含区间覆盖率和区间平均带宽的评价指标,通过将其与百分位法、百分位数Bootstrap(PB)法的预测结果对比,表明基于MBPB的概率性预测区间的覆盖率更高,平均带宽更窄,精度更好且效果也更优。

关键词：风电功率预测概率区间滑动分块百分位数Bootstrap法四分位数

Optimizing the Bacillus thuringiensis(Bt)protein concentration in cotton:Coordinated application of exogenous amino acids and EDTA to reduce spatiotemporal variability in boll and leaf toxins

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Journal of Integrative Agriculture 2024年第10期23卷 3419-3436页

作者： Zhenyu Liu Shu dong Yuting Liu Hanjia Li Fuqin Zhou Junfeng Ding Zixu Zhao Yinglong Chen Xiang Zhang Yuan Chen dehua Chen Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of GrainCrops Yangzhou UniversityYangzhou 225009China The UWA Institute of Agriculture School of Agriculture and EnvironmentThe University of Western AustraliaPerth 6009WAAustralia

During the boll formation stage,cotton bolls exhibit the lowest expression of Bacillus thuringiensis(Bt)insecticidal *** to insects varies notably among different organs,which poses challenges for controlling cotton ***,an experimental strategy was designed in the 2020-2021 cotton growing season to coordinate the enhancement of protein synthesis and the attenuation of *** Bt cultivars of Gossypium hirsutum,namely the hybrid Sikang 3 and the conventional Sikang 1,were used as test *** treatments were applied at the peak flowering period:CK(the control),T1(amino acids),and T2(amino acids and EDTA).The results show that,in comparison to the CK group,the Bt protein contents were significantly increased in both cotton bolls and their subtending leaves under the T1 and T2 *** maximum levels of increase observed were 67.5%in cotton bolls and 21.7%in ***,the disparity in Bt protein content between cotton bolls and their subtending leaves notably decreased by 31.2%.Correlation analysis suggested that the primary physiological mechanisms for augmenting Bt protein content involve increased protein synthesis and reduced protein catabolism,which are independent of Bt gene expression *** regression and path analysis revealed that elevating the soluble protein content and transaminase activity,while reducing the catabolic enzyme activities,are instrumental in enhancing the Bt protein ***,the coordinated application of amino acids and EDTA emerges as a strategy that can improve the overall resistance of Bt cotton and mitigate the spatiotemporal variations in Bt toxin concentrations in both cotton bolls and leaves.

关键词： Gossypium hirsutum Bt cotton insecticidal protein bolls and their subtending leaves nitrogen metabolism

结合序列分布概率的储能系统典型功率曲线提取方法

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电力自动化设备 2017年第10期37卷 8-14,28页

作者：杨锡运任杰李相俊董德华贾学翠华北电力大学控制与计算机工程学院北京102206 中国电力科学研究院新能源与储能运行控制国家重点实验室北京100192

在平滑光伏电站功率波动的应用场景下,提出一种储能系统典型功率曲线挖掘方法。基于储能系统功率在纵向时序的区间分布特性,利用基于Bloch球面的量子遗传算法寻找所有分布概率大于阈值的分布区间及相应特征功率值;根据特征功率值得到该... 详细信息

在平滑光伏电站功率波动的应用场景下,提出一种储能系统典型功率曲线挖掘方法。基于储能系统功率在纵向时序的区间分布特性,利用基于Bloch球面的量子遗传算法寻找所有分布概率大于阈值的分布区间及相应特征功率值;根据特征功率值得到该时刻典型功率值,从而获得典型功率曲线。通过对挖掘得到的4种天气类型下储能系统典型功率曲线进行综合分析,验证了所提方法的有效性。

关键词：储能功率平滑典型功率曲线分布概率区间

商业园区储能系统削峰填谷的有功功率协调控制策略

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电网技术 2018年第8期42卷 2551-2561页

作者：杨锡运董德华李相俊马雪耿娜贾学翠华北电力大学控制与计算机工程学院北京市昌平区102206 新能源与储能运行控制国家重点实验室中国电力科学研究院有限公司北京市海淀区100192 吉林省电力有限公司电力科学研究院吉林省长春市130021

作为未来重要的电力用户,商业园区建设将成为智能电网建设的重要内容之一。商业园区中储能系统最基本的作用是进行负荷侧的削峰填谷,在给园区带来经济收益的同时,也保证了电网运行的安全性。提出了一种储能系统削峰填谷的变参数功率差... 详细信息

作为未来重要的电力用户,商业园区建设将成为智能电网建设的重要内容之一。商业园区中储能系统最基本的作用是进行负荷侧的削峰填谷,在给园区带来经济收益的同时,也保证了电网运行的安全性。提出了一种储能系统削峰填谷的变参数功率差控制策略,基于园区典型日负荷预测曲线,对负荷状态和储能SOC状态进行区间划分,提出了对应的子目标函数,采用适应度函数变差系数排序法确定各子目标函数权重,对目标函数进行寻优,确定不同负荷区间与SOC区间的储能系统控制策略。最后,以上海某商业园区为例进行了仿真,验证了所提控制策略的有效性。

关键词：商业园区电池储能系统削峰填谷荷电状态日负荷预测

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承继共同正犯修正肯定说之理论肯认及运用

梧州学院学报 2021年第4期31卷 32-38页

作者：梁萌瑜童德华中南财经政法大学刑事司法学院湖北武汉430073

承继共同正犯理论中,后行为人的归责问题,不但是刑法学界存在争议的重要问题,也是司法实务中的实际难题。对于后行为人是否应当归责,学界有着纯粹肯定说、纯粹否定说及部分肯定说的争论。学说争论之背后是“部分实行全部责任”的处罚原... 详细信息

承继共同正犯理论中,后行为人的归责问题,不但是刑法学界存在争议的重要问题,也是司法实务中的实际难题。对于后行为人是否应当归责,学界有着纯粹肯定说、纯粹否定说及部分肯定说的争论。学说争论之背后是“部分实行全部责任”的处罚原则和共同正犯本质也即犯罪共同说和行为共同说的分立,从承继共同正犯的理论根基出发进行分析,修正肯定说在理论上立足于整体主义承认共同正犯的存在,同时兼顾个人责任原则,是更为合理的理论选择。此种理论在司法实务中对单一犯和复合犯的认定也具有实践价值,具有其他理论路径所不具有的实践合理性。

关键词：承继共同正犯部分实行全部责任犯罪共同说行为共同说