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Diversity and ecological assembly process of aerobic anoxygenic phototrophic bacteria in a low irradiation area,Three Gorges Reservoir

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Journal of Environmental Sciences 2024年第9期143卷 116-125页

作者： Lixin Huo Anran Ma Hong Liu xingzu wang Cheng Song Chongqing Institute of Green and Intelligent Technology Chinese Academy of SciencesChongqing 400714China Chongqing School University of Chinese Academy of SciencesCollege of Resources and EnvironmentChongqing 400714China Key Laboratory of Reservoir Aquatic Environment Chinese Academy of SciencesChongqing 400714China University of Chinese Academy of Sciences Beijing 100049China

Aerobic anoxygenic phototrophic bacteria(AAPB)are significant bacterial groups in aquatic ecosystems,known for their rapid growth and photoheterotrophic ***,the distribution and ecological assembly process of AAPB in low irradiation freshwater basins remain unclear,warranting further *** this study,we present the diversity,abundance,spatial variations,ecological process,and community interaction of AAPB in sediment of Three Gorges Reservoir(TGR)under low *** findings demonstrate the dominant genera of AAPB community that exist in the TGR area also are appeared in different waters,with some regional ***,the concentration of pufM gene,an indicator for AAPB,maintains a consistently high numerical level ranging from(2.21±0.44)×10^(4)to(9.98±0.30)×10^(7)gene copies/*** solar irradiation is suggested as the major factor affecting AAPB,it remains unclear whether and how AAPB differ between regions due to varying solar irradiation *** results show spatial differences between total bacteria and AAPB communities,with significant differences observed only in *** and environmental factor contributed less than 10%to the spatial difference of community,with sediment type and environmental factors being the key factors influencing microbial community *** stochastic process plays a dominant role in the aggregation and replacement of AAPB communities,among which the most contribution is dispersal *** AAPB network,Yoonia and Gemmobacter are the hubs for *** results valuable insights into the AAPB communities in TGR with low irradiation.

关键词： Three Gorges Reservoir(TGR) Aerobic anoxygenic phototrophic bacteria(AAPB) Bacterial community Null model Community assembly

Estimation of PM_(10) in the trafc-related atmosphere for three road types in Beijing and Guangzhou, China

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Journal of Environmental Sciences 2014年第1期26卷 197-204页

作者： Yu wang Jiong Li Xiang Cheng Xiaoxiu Lun Dezhi Sun xingzu wang College of Environmental Science and Engineering Beijing Forestry University Beijing Northland Construction Engineering Co. Ltd

The levels of roadside PM10 in Beijing, China, were investigated in 2011 and 2012 on a seasonal basis to estimate the population exposure to particulates for three road types. The measurements of PM10 were also conducted in the southern Chinese megacity of Guangzhou for comparison purposes. The results showed that roadside PMlo in Beijing correlated strongly with the PM10 background in the urban atmosphere. The levels of PM10 in street canyons were markedly higher than those along the open roads and in crossroad areas because of limited ventilation. An elevation of PM10 was observed in April, which was possibly due to the sand storms that frequently occur in the spring. Based on these observations, roadside PM10 in Beijing could have multiple origins and was to some extent dispersion- governed. In Guangzhou, the roadside PM10 did not closely relate to the background values. The PM10 pollution was greatly affected by local traffic conditions. The simulation of PM10 for different road types was completed during the study period using the Motor Vehicle Emissions Factor Model （MOBILE6.2） as an emission model and the California Line Source Dispersion Model （CALINE4） and Operational Street Pollution Model （OSPM） as dispersion models. The MOBILE6.2/CALINE4 software package was demonstrated to be sufficient for the simulation of PM10 in the open roads and crossroad areas in both Beijing and Guangzhou, and the simulation results of roadside PM10 in the street canyons by the MOBILE6.2/OSPM package were in close agreement with those of the measurements.

关键词： roadside PM10 traffic volume open road crossroad street canyon

Enhancing sensitivity of microbial fuel cell sensors for low concentration biodegradable organic matter detection:Regulation of substrate concentration,anode area and external resistance

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Journal of Environmental Sciences 2021年第3期33卷 227-235页

作者： Yangyang Gao Sha wang Fengjun Yin Pin Hu xingzu wang Yuan Liu Hong Liu Key Laboratory of Reservoir Aquatic Environment Chinese Academy of SciencesChongqing 400714China Chongqing Institute of Green and Intelligent Technology Chinese Academy of SciencesChongqing 400714China University of Chinese Academy of Sciences Beijing100049China

The relatively low sensitivity is an important reason for restricting the microbial fuel cell(MFC)sensors'application in low concentration biodegradable organic matter(BOM)*** startup parameters,including substrate concentration,anode area and external resistance,were regulated to enhance the sensitivity of MFC *** results demonstrated that both the substrate concentration and anode area were positively correlated with the sensitivity of MFC sensors,and an external resistance of 210Ωwas found to be optimal in terms of sensitivity of MFC *** MFC sensors had lower detection limit(1 mg/L)and higher sensitivity(Slope value of the linear regression curve was 1.02),which effectively overcome the limitation of low concentration BOM *** essential reason is that optimized MFC sensors had higher coulombic efficiency,which was beneficial to improve the sensitivity of MFC *** main impact of the substrate concentration and anode area was to regulate the proportion between electrogens and nonelectrogens,biomass and living cells of the anode *** external resistance mainly affected the morphology structure and the proportion of living cells of the *** study demonstrated an effective way to improve the sensitivity of MFC sensors for low concentration BOM detection.

关键词： Microbial fuel cell sensor High sensitivity Biodegradable organic matter Substrate concentration Anode area External resistance

ZnAlLa类水滑石对污泥脱水液中磷酸根的吸附

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化工学报 2010年第4期61卷 955-962页

作者：程翔黄新瑞王兴祖孙德智哈尔滨工业大学市政环境工程学院黑龙江哈尔滨150090 北京林业大学环境科学与工程学院北京100083

通过共沉淀法合成了ZnAlLa三元类水滑石,并考察了其结构特征和对磷酸根的吸附性能。结果表明,在保持类水滑石层状结构的条件下,La的适量掺杂可增强吸附剂对磷酸根的吸附。当Zn∶Al∶La摩尔比为2.00∶0.90∶0.10时,ZnAlLa类水滑石在24h... 详细信息

通过共沉淀法合成了ZnAlLa三元类水滑石,并考察了其结构特征和对磷酸根的吸附性能。结果表明,在保持类水滑石层状结构的条件下,La的适量掺杂可增强吸附剂对磷酸根的吸附。当Zn∶Al∶La摩尔比为2.00∶0.90∶0.10时,ZnAlLa类水滑石在24h内对污泥脱水液中磷酸根的吸附量为35.15mgP.g-1,比无La时的吸附量提高了41.9%。300℃焙烧处理后,ZnAlLa样品转化为亚稳态的复合金属氧化物,同时比表面积明显增加,其磷酸根吸附量约为焙烧前的1.48倍。ZnAlLa对磷酸根的吸附在pH变化及竞争离子存在时表现出较强的稳定性。该吸附剂对污泥脱水液中磷酸根的吸附符合假二级吸附动力学;吸附等温线表现为Langmuir型。

关键词： ZnAlLa类水滑石污泥脱水液磷酸根吸附

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缓释促生剂的制备及其河道水氨氮脱除效能

环境污染与防治 2018年第2期40卷 145-150页

作者：鲍捷王兴祖唐婧任以伟沈阳建筑大学市政与环境工程学院辽宁沈阳110168 中国科学院重庆绿色智能技术研究院重庆400714 重庆膜材料与膜技术装备环保产业技术创新研究院重庆408400

针对生物促生剂储存困难、投加频繁等关键问题,在优化其配方的基础上,采用溶剂挥发法将生物促生剂和遴选的骨架材料进行复合,制备缓释促生剂,并进行了释放性能和生物脱氮的测试。结果表明,最佳的生物促生剂配方为改性活性炭20mg/L、维... 详细信息

针对生物促生剂储存困难、投加频繁等关键问题,在优化其配方的基础上,采用溶剂挥发法将生物促生剂和遴选的骨架材料进行复合,制备缓释促生剂,并进行了释放性能和生物脱氮的测试。结果表明,最佳的生物促生剂配方为改性活性炭20mg/L、维生素与微量元素混合液1mL/L、芦荟萃取物10mg/L、螯合剂B 10mg/L。聚乳酸(PLA)的降解速率较聚羟基脂肪酸酯(PHA)和聚己内酯(PCL)低,且价格低廉,更适宜作为缓释促生剂的骨架材料。缓释促生剂中PLA质量分数在30%~70%时,生物促生剂释放周期可达到15d以上。综合生物促生剂的释放周期和氨氮去除效果考虑,PLA最佳质量分数为40%。

关键词：河道治理原位修复生物促生剂缓释材料氨氮去除

可迁移性零价铁的制备及其活化过硫酸盐氧化修复石油污染土壤

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环境科学研究 2023年第1期36卷 89-99页

作者：王兴族王茂林王亚玲柴旭辉蔡喜运大连理工大学环境学院工业生态与环境工程教育部重点实验室辽宁大连116024

纳米零价铁(nZVI)活化过硫酸盐(PS)体系具有活性高、持效性长等潜在优势,在有机污染土壤修复领域具有良好的应用前景.然而,nZVI颗粒易于发生团聚和被空气氧化,在土壤中迁移性能和稳定性能较差,限制了其活化性能的发挥.本研究采用聚天冬... 详细信息

纳米零价铁(nZVI)活化过硫酸盐(PS)体系具有活性高、持效性长等潜在优势,在有机污染土壤修复领域具有良好的应用前景.然而,nZVI颗粒易于发生团聚和被空气氧化,在土壤中迁移性能和稳定性能较差,限制了其活化性能的发挥.本研究采用聚天冬氨酸(PASP)修饰和硫化改性技术,制备了可迁移的零价铁复合材料(PASP-S-nZVI),评价了PASP-S-nZVI的活化PS性能及其在石英砂填充介质中的迁移性能,优化了该材料活化PS降解土壤中石油烃的反应条件,并开展了土壤污染修复小试试验. SEM-EDS和XPS表征结果显示,PASP-S-nZVI材料为表面具有PASP涂层及硫铁化物(FeSx)的零价铁.与未改性nZVI和S-nZVI相比,PASP-S-nZVI材料的悬浮稳定性、Zeta电位和电子利用率都显著增加,表明双重改性增加了nZVI的稳定性能.柱试验结果显示,PASP-S-nZVI具有较低的附着效率,其实际碰撞效率是S-nZVI的38.0%、nZVI的26.5%,在含水介质中的迁移性能显著增加,且增加程度与填充介质的粒径尺寸和水体pH有关.在优化的条件参数下,PASP-S-nZVI材料可高效活化PS,氧化降解土壤中的石油烃,实验室试验中石油烃3 d的降解率为77%±2%.土壤修复小试试验显示,石油烃3 d的降解率达到53%±2%,证实了PASP-S-nZVI材料在土壤中活化PS性能较好,具有潜在的应用前景.

关键词：聚天冬氨酸硫化纳米零价铁过硫酸盐氧化石油烃

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面向概念设计的扩展功能建模方法

机械工程学报 2013年第15期49卷 153-162页

作者：杨波高常青尹晓玲王兴祖姚孔济南大学机械工程学院济南250022

在功能描述方法分析的基础上,提出一种对功能进行扩展建模的方法。建立扩展功能基模型及其基于本体的描述策略;提出表征功能之间关联的扩展功能关联模型,包括功能的逻辑关系模型、语义关系模型以及组合关系模型;提出建立扩展功能结构聚... 详细信息

在功能描述方法分析的基础上,提出一种对功能进行扩展建模的方法。建立扩展功能基模型及其基于本体的描述策略;提出表征功能之间关联的扩展功能关联模型,包括功能的逻辑关系模型、语义关系模型以及组合关系模型;提出建立扩展功能结构聚合单元的构想,这种聚合单元是一个不考虑具体的结构形式,而抽取出功能上的本质特征,集功能与概念原理结构特征于一体的强连接结构集合,这种聚合单元形式的引入,避免功构映射过程中功能关联图出现组合爆炸,同时也避免了在概念设计阶段使用常规机构而过早地限制住产品结构形式的缺陷。在此基础上,从功能单元可解性的判定、功能空间的正向扩展规则及逆向扩展规则三个方面给出功能推理的基本策略。通过实例描述扩展功能建模方法的应用以及引入扩展功能模型的有效性。

关键词：扩展功能基扩展功能关联模型扩展功能结构单元功能推理概念设计

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风电机组变桨轴承漏油分析

轴承 2016年第11期 46-49页

作者：刘勇王兴祖赵登利山东中车风电有限公司风电装备研究所济南250022

针对风场中变桨轴承的漏油现象,通过漏油试验,对变桨轴承的漏油问题进行深入分析,结果证明,影响变桨轴承漏油的主要因素是填充量过多、排油油路不畅以及密封件不具备补偿轴承内、外圈偏移量的能力。

关键词：变桨轴承风电机组漏油

硫磺-生物绳为填料的自养反硝化污水脱氮处理

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土木与环境工程学报（中英文） 2022年第3期44卷 150-159页

作者：时绍鹏万柳杨廖宏燕王兴祖重庆交通大学河海学院重庆400074 中国科学院重庆绿色智能技术研究院水污染过程与防治研究中心重庆400714 中国科学院大学资源与环境学院北京100049

针对传统的填充床硫自养反硝化工艺填料用量大、水头损失严重以及反应器易堵塞等问题,采用硫涂层接触反硝化工艺进行模拟污水脱氮研究,主要考察反应器内部的填料填充比、温度以及水力停留时间(HRT)对其脱氮性能的影响。结果表明:在进水N... 详细信息

针对传统的填充床硫自养反硝化工艺填料用量大、水头损失严重以及反应器易堵塞等问题,采用硫涂层接触反硝化工艺进行模拟污水脱氮研究,主要考察反应器内部的填料填充比、温度以及水力停留时间(HRT)对其脱氮性能的影响。结果表明:在进水NO_(3)^(-)-N浓度为50 mg/L、温度为(25±1)℃、HRT=19.5 h时,将填料填充比由1/10增大到1/5,NO_(3)^(-)-N的去除效果明显提升,由56.77%提升至78.26%;温度变化对反应器脱氮有很大影响,当填料填充比为1/5、HRT=19.5 h时,在(25±1)℃和(30±1)℃条件下,NO_(3)^(-)-N的平均去除率分别为71.05%和98.38%;此外,当HRT降低至9.7 h时,NO_(3)^(-)-N的平均去除率为89.29%。整个反应过程中,出水NO_(2)^(-)-N浓度均很低,保持在0.4 mg/L以内,并且反应器出水pH值保持在6.8~8.3之间,满足微生物生长所需的pH条件。硫涂层接触反硝化系统的硫自养反硝化优势菌属是Thiothrixs、Thiomonas和Sulfuritalea,其占比分别为2.89%、1.55%和1.35%。微生物功能预测结果表明,硫、氮代谢对系统脱氮起着关键作用。

关键词：硫自养反硝化硫涂层生物脱氮填料填充比反应器堵塞

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