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Removal of cadmium using MnO_2 loaded D301 resin

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Journal of Environmental Sciences 2007年第6期19卷 652-656页

作者： zhu zhi-liang MA Hong-mei ZHANG Rong-hua GE Yuan-xin ZHAO Jian-fu Key Laboratory of Yangtze Aquatic Environment of Ministry of Education State Key Laboratory of Pollution Control and Resource Reuse Tongji University Shanghai 200092 China

MnO2 loaded weak basic anion exchange resin D301 （Anion exchange resin, macroreticular weak basic styrene） as adsorbent has been prepared and applied to the removal of cadmium. The adsorption characteristics have been investigated with respect to effect of pH, equilibrium isotherms, removal kinetic data, and interference of the coexisting ions. The results indicated that the Cd^2＋ could be efficiently removed using MnO2 loaded D301 resin in the pH range of 3-8 from aqueous solutions with the co-existence of high concentration of alkali and alkaline-earth metals ions. The saturate adsorption capacity of the Cd^2＋ was 77.88 mg/g. The adsorption process followed the pseudo first-order kinetics. The equilibrium data obtained in this study accorded excellently with the Langmuir adsorption isotherm.

关键词： cadmium kinetics adsorption loaded resin removal

Rapid Determination of HAAs Formation Potential of the Reaction of Humic Acid with Chlorine or Chlorine Dioxide

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Chemical Research in Chinese Universities 2007年第3期23卷 268-272页

作者： zhu zhi-liang GE Yuan-xin ZHANG Rong-hua MA Hong-mei ZHAO Jian-fu State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and Engineering Tongji University Shanghai 200092 P. R. China

On the basis of gas chromatography（GC） coupled with a short capillary column and an electron capture detector （ ECD）, a simple and rapid method for the determination of five haloaceric acids （ HAAs ） in drinking water was developed by the optimization of derivation conditions and the modification of gas chromatographic program. HAAs formarion potential（HAAFP） of the reaction of humic acid with chlorine was determined via this method. The major advantages of the method are the simplicity of chromatographic temperature program and the short run time of GC. Dichloroaceric acid（DCAA） and Trichloroacetic acid（TCAA）, which were detected in the determination of HAAFP, were rapidly formed in the first 72 h of the reaction of humic acid with chlorine. HAAFP of the reaction of humic acid with chlorine increased with the increase in the concentrations of humic acid and chlorine. The average HAAFP of the reaction of humic acid with chlorine was 39.9μg/mg TOC under the experimental conditions. When the concentration of humic acid was 4 mg/L, the concentration of HAAs, which were produced in the reaction of humic acid with choline, may exceed MCL of 60μg/L HAAs as the water quality standards for urban water supply of China and the first stage of US EPA disinfecrion/disinfection by-products（D/DBP） rule; when the concentration of humic acid was 2 mg/L, the concentration of HAAs may exceed MCL of 30 μg/L HAAs for the second stage of US EPA D/DBP rule. When humic acid was reacted with chlorine dioxide, only DCAA was detected with a maximum concentration of 3.3 μg/L at a humic acid content of 5 mg/L. It was demonstrated that the substitution of chlorine dioxide for chorine may entirely or partly control the formation of HAAs and effectively reduce the health risk associated with disinfected drinking water.

关键词： Humic acid Short capillary column Chlorine HAAs formation potential(HAAFP)

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痕量砷的形态分析方法研究进展

光谱学与光谱分析 2008年第5期28卷 1176-1180页

作者：朱志良秦琴同济大学污染控制与资源化国家重点实验室教育部长江水环境重点实验室上海200092

综述了近年来痕量As测定方法的研究进展,从分光光度法、原子吸收光谱法、氢化物-原子荧光光谱法、电感耦合等离子体法、X-射线荧光法、色谱分离技术与原子特征检测联用等6个方面介绍了目前有关痕量As分析方法的基本特点和应用实例,比较... 详细信息

综述了近年来痕量As测定方法的研究进展,从分光光度法、原子吸收光谱法、氢化物-原子荧光光谱法、电感耦合等离子体法、X-射线荧光法、色谱分离技术与原子特征检测联用等6个方面介绍了目前有关痕量As分析方法的基本特点和应用实例,比较了各种方法的优缺点和适用范围。文章指出,痕量As的分析测定目前虽然已经取得很大进展,当已有方法真正涉及形态分析的不多,而且在实际分析应用中存在设备昂贵难以推广等缺点。今后的发展方向应该是,进一步深入研究各种高效的痕量As分离技术,实现对各种形态痕量As的直接、快速、高选择性的分离和分析,同时,各种现代分析技术的联用测定痕量As将是今后发展的重点方向之一。

关键词：痕量As 测定方法形态进展

Extraction of Cadmium from Sewage Sludge Using Polyepoxysuccinic Acid

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Pedosphere 2009年第2期19卷 137-142页

作者： zhu zhi-liang ZHANG Li-Hua ZHANG Hua QIU Yan-Ling ZHANG Rong-Hua ZHAO Jian-Fu State Key Laboratory of Pollution Control and Resource Reuse Tongji University Shanghai 200092 China Chemistry and Biology Engineering Department Sanming College Sanming 365004 China

Polyepoxysuccinic acid （PESA）, as an environmental benign biodegradable chelant, was used to remove heavy metals from the sewage sludge of Shanghai Taopu Wastewater Treatment Plant. The extraction of cadmium （Cd） from sewage sludge using aqueous solution of PESA was studied. It was found that PESA was capable of extracting Cd from the sludge, and the extraction efficiency was dependent on both pH and the concentration of the chelating reagent. The extraction efficiency decreased gradually with increasing of pH, whereas the dependency on pH decreased as the concentration of PESA increased. In the case of the high PESA to total metal ratio, e.g., 10：1, the extraction efficiency reached above 70% within the pH range from 1 to 7. The highest extraction efficiency obtained in tbe experiment was 78%. By comparing the contents of the heavy metals in sewage sludge before and after the extraction, it was found that the extracted Cd came mainly from the four fractions： acid-soluble, reducible, oxidizable, and water-soluble fractions.

关键词： cadmium extraction PESA sewage sludge

A Spectral Index for Estimating Soil Salinity in the Yellow River Delta Region of China Using EO-1 Hyperion Data

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Pedosphere 2010年第3期20卷 378-388页

作者： WENG Yong-Ling GONG Peng zhu zhi-liang Department of Surveying and Mapping Engineering College of Transportation Southeast University Nanjing 210096(China) State Key Laboratory of Remote Sensing Science Institute of Remote Sensing Applications of the Chinese Academy ofSciences and Beijing Normal University Beijing 100101 (China) Department of Environment Science Policy and Management University of California Berkeley CA 94720 (USA) EROS Data Center U.S. Geological Survey Sioux Falls SD 57198 (USA)

Soil salinization is one of the most common land degradation processes. In this study, spectral measurements of saline soil samples collected from the Yellow River Delta region of China were conducted in laboratory and hyperspectral data were acquired from an EO-1 Hyperion sensor to quantitatively map soil salinity in the region. A soil salinity spectral index (SSI) was constructed from continuum-removed reflectance (CR-reflectance) at 2052 and 2203 nm, to analyze the spectral absorption features of the salt-affected soils. There existed a strong correlation (r = 0.91) between the SSI and soil salt content (SSC). Then, a model for estimation of SSC with SSI was established using univariate regression and validation of the model yielded a root mean square error (RMSE) of 0.986 and an R2 of 0.873. The model was applied to a Hyperion reflectance image on a pixel-by-pixel basis and the resulting quantitative salinity map was validated successfully with RMSE = 1.921 and R2 = 0.627. These suggested that the satellite hyperspectral data had the potential for predicting SSC in a large area.

关键词： hyperspectral reflectance soil salt content spectral absorption features

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动态服务流程模型混合分割方法及应用

东北大学学报（自然科学版） 2010年第5期31卷 639-643页

作者：毕敬朱志良东北大学信息科学与工程学院辽宁沈阳110004 东北大学软件学院辽宁沈阳110004

为统一跨组织之间的服务流程定制问题,提出了基于高级Petri网的动态服务流程模型混合分割方法,将一个全局的BPEL模型分割为若干个完备的执行分片,根据组织的不同,分别放置在多个BPEL引擎上协同执行,在此基础上进行了模型混合分割的正确... 详细信息

为统一跨组织之间的服务流程定制问题,提出了基于高级Petri网的动态服务流程模型混合分割方法,将一个全局的BPEL模型分割为若干个完备的执行分片,根据组织的不同,分别放置在多个BPEL引擎上协同执行,在此基础上进行了模型混合分割的正确性验证.通过示例验证了BPEL流程模型混合分割执行的可行性,最后结合示例给出了支持模型混合分割的原型系统.仿真结果表明:动态服务流程模型混合分割方法支持下的多个BPEL引擎分布式执行比集中式BPEL引擎的集中编制有明显的优势,从而提高了服务流程引擎的吞吐率,也减少了服务响应时间的花费.

关键词： BPEL 执行引擎服务流程混合分割 Petri网

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论中国传统艺术哲学的“无名艺术观”

南京大学学报（哲学．人文科学．社会科学） 2019年第1期56卷 133-146页

作者：朱良志北京大学哲学系北京100871

唐宋以来中国传统艺术哲学形成一种"无名艺术观",这是一种非功利、非目的的艺术观,根源于至人无名、无凡无圣的平等哲学智慧,深刻地影响了传统艺术创造。这种"无名艺术观"可从以下六个方面来把握:巨师神髓,说无贵贱的天籁智慧;赏雨茅屋... 详细信息

唐宋以来中国传统艺术哲学形成一种"无名艺术观",这是一种非功利、非目的的艺术观,根源于至人无名、无凡无圣的平等哲学智慧,深刻地影响了传统艺术创造。这种"无名艺术观"可从以下六个方面来把握:巨师神髓,说无贵贱的天籁智慧;赏雨茅屋,说唐宋以后一种不同于正统观念的新典雅观的出现;石上菖蒲,从微物凡草的欣赏,说一种突破传统比喻象征模式的新价值观;江路野梅,在野意萧瑟中,破秩序和等级的观念,将艺术引向生命真性的书写;蓬莱清浅,则从神性的消解方面,谈传统艺术中存在的非宗教倾向;光而不耀,说中国艺术沉潜往复、不肆张扬风格的深层原因。这六个方面都是对"名"的超越,反映出传统艺术在唐宋以来发展中出现的新趋势。

关键词：中国艺术无名非功利荒野哲学

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金农绘画的“金石气”

艺术百家 2013年第2期29卷 138-153,137页

作者：朱良志北京大学哲学系北京100875

金农毕生有金石之好,他既奇且怪的绘画是在"金石气"浸染中产生出来的。金石气影响他对永恒感的追求,影响他的绘画真性观,也影响到他绘画中所蕴藏的"历史感",更铸造出他脱略凡尘的绘画语言。本文通过金石气与金农绘画之间的关系分析,探... 详细信息

金农毕生有金石之好,他既奇且怪的绘画是在"金石气"浸染中产生出来的。金石气影响他对永恒感的追求,影响他的绘画真性观,也影响到他绘画中所蕴藏的"历史感",更铸造出他脱略凡尘的绘画语言。本文通过金石气与金农绘画之间的关系分析,探讨他在拓展文人画表现领域方面的贡献,并由此思考文人画发展中的相关理论问题。

关键词：金农绘画创作艺术作品文人画金石气生命真性觉悟冷香

主被动相结合的Ad Hoc网络拓扑重构算法

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东北大学学报（自然科学版） 2011年第1期32卷 40-43页

作者：叶宁朱志良刘军东北大学信息科学与工程学院辽宁沈阳110819 东北大学软件学院辽宁沈阳110819

根据性能与拓扑的相关性,提出一种分级Ad Hoc网络拓扑重构算法.主动重构分为簇内、簇间两部分:在簇内,通过收集邻居信息进行局部拓扑发现,维护邻域拓扑的k-连通实现簇内拓扑k-连通;在邻簇间,通过计算由各簇边界节点及其链路所组成赋权... 详细信息

根据性能与拓扑的相关性,提出一种分级Ad Hoc网络拓扑重构算法.主动重构分为簇内、簇间两部分:在簇内,通过收集邻居信息进行局部拓扑发现,维护邻域拓扑的k-连通实现簇内拓扑k-连通;在邻簇间,通过计算由各簇边界节点及其链路所组成赋权二分图的最优匹配,以维护k条不邻接的链路,k值根据局部拓扑特性和应用要求动态调整;网络故障时,采用k跳邻域扩散连通性恢复方案进行被动重构,并在故障恢复后,对故障区域进行局部拓扑优化.仿真结果表明,主被动相结合拓扑重构方案能够提高网络的抗毁性、可靠性和有效性.

关键词： Ad Hoc网络拓扑重构拓扑控制异构分级结构