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Exploring the methods on improving CH_(4) delivery performance to surpass the Advanced Research Project Ageney-Energy target

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Chinese Journal of Chemical Engineering 2021年第5期34卷 118-124页

作者： weichen zhu Yuxuan He Minman Tong Xiaoyong Lai Shijia Liang Xu Wang Yanjuan Li Xiao Yan School of Chemistry and Materials Science Jiangsu Normal UniversityXuzhou 221116China State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering College of Chemistry and Chemical EngineeringNingxia UniversityYinchuan 750021China

CH_(4) storage associated with adsorbed natural gas(ANG)technology is an issue attracting great *** the Advanced Research Project Agency-Energy(ARPA-E)targeted deliverable capacity of 315 cm^(3)·cm^(-3)(STP),hundreds of thousands of materials have been experimentally or theoretically evaluated,while the best results still show a 35% gap from the ***,recent theoretical research reveals that the target is beyond the possibility that real materials can be *** get rid of the awkward situation,we make attempts on investigating the CH_(4) delivery performance under other operation *** of raising the discharge temperature(to infinite high)or elevating the storage pressure(to 25 MPa)have been proved to show limited *** this work,it is found that the ARPA-E target can be achieved by using a decreasing storage temperature *** taking 280 CoRE(computation-ready,experimental)COFs(covalent organic frameworks)as ANG materials,when reduce the storage temperature to 190.6 K,the highest deliverable capacity can reach 392 cm^(3)·cm^(-3)(STP),and 16.1% CoRE COFs can surpass the *** target is also achievable when storage at 220 *** performance relationships study shows strong correlation between deliverable capacity and void ***,120 hypothetical COFs are generated to ascertain the optimum void *** addition,the performance of 2D-COFs can be greatly enhanced by increasing the interlayer spacings,***_(4) deliverable capacity(storage at 190.6 K)of ATFG-COF can be improved from 239 to 411 cm^(3)·cm^(-3)(STP)when interlayer spacing is enlarged to 1.65 nm.

关键词： Covalent organic frameworks CH_(4) delivery Adsorbed natural gas Molecular simulation Structure-property relationship Material design

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诱导结晶法回收磷的影响因素及应用研究进展

工业水处理 2024年第9期44卷 41-49页

作者：齐震刘汝鹏徐林煦房金峰朱炜臣樊浩宇乔一木山东建筑大学市政与环境工程学院山东济南250101 山东建筑大学资源与环境创新研究院山东济南250101

随着社会经济的发展和人类频繁的工业活动,磷逐渐从磷矿石转变为磷酸盐进入水体,废水中磷的存在会导致水体污染和富营养化。由于磷酸盐岩体消耗量不断增加,磷矿资源逐渐成为一种稀缺资源,磷的回收再利用具有重大意义,而含磷废水被认为... 详细信息

随着社会经济的发展和人类频繁的工业活动,磷逐渐从磷矿石转变为磷酸盐进入水体,废水中磷的存在会导致水体污染和富营养化。由于磷酸盐岩体消耗量不断增加,磷矿资源逐渐成为一种稀缺资源,磷的回收再利用具有重大意义,而含磷废水被认为是一种潜在的磷回收源。借用反应器的诱导结晶法具有设计简单、操作简便、回收效率高、对环境影响小等优点,是一种理想的磷回收方法。首先从动力学和热力学角度简要描述了诱导结晶法的原理,其次分析了羟基磷灰石(HAP)和鸟粪石(MAP)两种常用的诱导结晶法回收磷的影响因素,包括过饱和度、酸碱度(pH)、离子物质的量比、水力停留时间(HRT)、上升流速以及反应器类型等,再次介绍了两种诱导结晶法在实际回收磷领域的应用,最后对诱导结晶法回收利用磷资源的发展前景及工艺应用条件优化进行了展望。

关键词：磷酸盐反应器诱导结晶磷回收羟基磷灰石鸟粪石

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电容去离子技术去除水中硝酸盐的研究进展

工业水处理 2024年第7期44卷 29-37页

作者：房金峰曲莹赵玉博刘汝鹏张震齐震樊浩宇朱炜臣山东建筑大学市政与环境工程学院山东济南250101 济南水务集团有限公司山东济南250013 山东建筑大学资源与环境创新研究院山东济南250101

电容去离子技术(Capacitive deionization,CDI)是一种新兴的电化学硝酸盐脱除技术,具有结构和操作简单、成本低、能耗低、对环境友好等优点,但存在吸附容量不足、选择性较差、脱盐能力有限等问题。针对CDI存在的问题,国内外学者在CDI装... 详细信息

电容去离子技术(Capacitive deionization,CDI)是一种新兴的电化学硝酸盐脱除技术,具有结构和操作简单、成本低、能耗低、对环境友好等优点,但存在吸附容量不足、选择性较差、脱盐能力有限等问题。针对CDI存在的问题,国内外学者在CDI装置结构优化及电极材料改性方面进行了深入研究。介绍了CDI装置在膜电容去离子技术(MCDI)、流动电极电容去离子技术(FCDI)、电容-电催化耦合技术等结构优化方面的研究进展。电极材料改性研究进展主要从树脂类涂覆、表面改性、金属氧化物/氢氧化物掺杂、结构调控等方面进行了介绍。通过CDI装置结构优化和电极材料改性,提高了电容去离子技术去除硝酸盐的性能,扩大了其去除硝酸盐的适用范围,使得电容去离子技术在去除硝酸盐方面有十分广阔的应用前景。最后针对提高选择性与去除率、提高电极吸附容量、增强电极可持续利用性、实际应用等方面提出相应建议,以期为CDI的进一步发展提供参考。

关键词：电容去离子技术电极改性结构优化硝酸盐

混合电容去离子技术及法拉第电极材料研究进展

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应用化工 2024年第7期53卷 1692-1696,1701页

作者：房金峰刘洋滕新君赵玉博刘汝鹏张震樊浩宇朱炜臣齐震山东建筑大学市政与环境工程学院山东济南250101 南水北调东线山东干线有限责任公司山东济南250109 山东沃安环境科技有限公司山东德州253000 山东建筑大学资源与环境创新研究院山东济南250101

介绍了混合电容去离子技术的基本原理,并简要回顾了发展历程;从混合电容去离子的原理和现状分析,认为混合电容去离子技术的研究关键在于电极材料,依次介绍了过渡金属氧化物、聚阴离子型化合物、普鲁士蓝类似物等法拉第电极材料的研究现... 详细信息

介绍了混合电容去离子技术的基本原理,并简要回顾了发展历程;从混合电容去离子的原理和现状分析,认为混合电容去离子技术的研究关键在于电极材料,依次介绍了过渡金属氧化物、聚阴离子型化合物、普鲁士蓝类似物等法拉第电极材料的研究现状,提出现阶段的研究重点仍是提高电极材料的脱盐能力和循环稳定性,并对混合电容去离子技术未来的发展方向进行了展望。

关键词：电容去离子电极材料脱盐水资源

P-induced electron transfer interaction for enhanced selective hydrogenation rearrangement of furfural to cyclopentanone

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Journal of Energy Chemistry 2024年第5期92卷 43-51页

作者： weichen Wang Hongke Zhang Yidan Wang Fangyuan Zhou Zhiyu Xiang Wanbin zhu Hongliang Wang Center of Biomass Engineering College of Agronomy and BiotechnologyChina Agricultural UniversityBeijing 100193China

Optimizing the intrinsic activity of non-noble metal by precisely tailoring electronic structure offers an appealing way to construct cost-effective catalysts for selective biomass ***,we reported a P-doping bifunctional catalyst(Ni-P/mSiO_(2))that achieved 96.6%yield for the hydrogenation rearrangement of furfural to cyclopentanone at mild conditions(1 MPaH_(2),150°C).The turnover frequency of Ni-P/mSiO_(2)was 411.9 h^(-1),which was 3.2-fold than that of Ni/mSiO_(2)(127.2 h^(-1)).Detailed characterizations and differential charge density calculations revealed that the electron-deficient Niδ+species were generated by the electron transfer from Ni to P,which promoted the ring rearrangement *** functional theory calculations illustrated that the presence of P atoms endowed furfural tilted adsorb on the Ni surface by the C=O group and facilitated the desorption of *** work unraveled the connection between the localized electronic structures and the catalytic properties,so as to provide a promising reference for designing advanced catalysts for biomass valorization.

关键词： Furfural Hydrogenation rearrangement P-doping Electron transfer Biomass valorization

非同步网络中基于TOA的鲁棒非视距目标自定位算法

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传感技术学报 2019年第11期32卷 1719-1724,1744页

作者：朱伟辰王刚宁波大学信息科学与工程学院

讨论了非同步无线网络中基于到达时间(Time-of-Arrival,TOA)的非视距(Non-Line-of-Sight,NLOS)目标自定位问题。为了节省目标源的电池能量,假设目标源不向锚节点发送信号,而是仅接收来自锚节点的信号。这种信号的收发方式,会导致测量模... 详细信息

讨论了非同步无线网络中基于到达时间(Time-of-Arrival,TOA)的非视距(Non-Line-of-Sight,NLOS)目标自定位问题。为了节省目标源的电池能量,假设目标源不向锚节点发送信号,而是仅接收来自锚节点的信号。这种信号的收发方式,会导致测量模型中存在一些影响问题求解的参数。为消去这些参数,选定一个参考测量值,并用其他测量值减去参考测量值。使用经过转换后的测量数据,构造了一个新的鲁棒最小二乘(Robust Least Square,RLS)问题,其以目标源位置和参考测量值中的NLOS误差作为未知变量,同时对其余测量值中的NLOS误差具有鲁棒性。最后,将RLS问题松弛到易于处理的半正定规划(Semidefinite Program,SDP)问题以获得稳定的解。仿真结果表明,本文提出方法的均方根误差较现有其他方法在不同场景下有0.5 m^6 m以上的优势。

关键词：定位半正定松弛到达时间非同步无线网络到达时间差非视距误差

Cryogenian and Ediacaran integrative stratigraphy,biotas,and paleogeographical evolution of the Qinghai-Tibetan Plateau and its surrounding areas

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Science China Earth Sciences 2024年第4期67卷 919-949页

作者： Lang SUN Malik Muhammad Saud Sajid KHAN Chuan YANG Zhixin SUN Bing PAN Shehryar AHMED Lanyun MIAO weichen SUN Chunlin HU Xiaojuan SUN Cui LUO Bo CHEN Zongjun YIN Fangchen ZHAO Guoxiang LI Maoyan zhu State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of SciencesNanjing 210008China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China

The complex evolutionary history of the Qinghai-Tibetan Plateau and its surrounding areas,including the continental blocks(Indian,Lhasa,South Qiangtang,Tarim,Olongbuluk,Central Qilian,Alxa,North China,Yangtze,Central Iran and Oman)and the orogenic belts between them,has long been the frontier in Earth science *** Cryogenian and Ediacaran strata are extensively distributed in these ***,relatively complete Cryogenian and Ediacaran successions have been discovered in Oman,Indian,Yangtze,and Tarim blocks,while only the Ediacaran successions have been reported in Iran,the South Qiangtang,Central Qilian,Alxa,and North China *** on previous studies together with the integration of new materials and advancement obtained through the Second Tibetan Plateau Scientific Expedition and Research,this review aims to synthesize a correlative stratigraphic framework of the representative Cryogenian and Ediacaran sequences from the Qinghai-Tibetan Plateau and its surrounding ***,the Cryogenian and Ediacaran biotas and major geological events in these areas are comprehensively discussed in aspects of current research *** results indicate that,in general,Ediacaran fossils of each area exhibit distinct features in preservation and assemblage composition,but the typical late Ediacaran fossils Cloudina and Shaanxilithes have been reported from most of these *** addition to the two global Cryogenian glaciations,late Ediacaran glaciogenic deposits are extensively recorded in the areas within and around the northern QinghaiTibetan Plateau(including the North China,Alxa,Central Qilian,Olongbuluk,and Tarim blocks,and the North Qilian Accretionary Belt),as well as central and southern ***,further research is required to determine the age,distribution,and origin of these late Ediacaran glaciogenic ***,the middle Ediacaran DOUNCE/Shuram Excursion is widely documented in the Qinghai-Tibetan Plateau and its surroundi

关键词： Qinghai-Tibetan Plateau Cryogenian Ediacaran Stratigraphy Palaeogeography Biota Gondwana

Effects and fate of metal-based engineered nanomaterials in soil ecosystem: A review

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Pedosphere 2024年第05期 843-852页

作者： Qibin WANG Peng ZHANG weichen ZHAO Shakoor NOMAN Adeel MUHAMMAD Guikai zhu Yi SUN Quanlong WANG Yaqi JIANG Yukui RUI Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation College of Resources and Environmental Sciences China Agricultural University Department of Environmental Science and Engineering University of Science and Technology of China School of Geography Earth and Environmental Sciences University of Birmingham BNU-HKUST Laboratory of Green Innovation Advanced Institute of Natural Sciences Beijing Normal University at Zhuhai China Agricultural University Professor Workstation of Yuhuangmiao Town China Agricultural University Professor Workstation of Sunji Town

Metal-based engineered nanomaterials (MENMs) are increasingly being used in people’s working lives. Although MENMs have important effects on soil ecosystem and play an important role in solving soil environmental problems, the hazards associated with MENMs cannot be ignored. Therefore, more and more scholars have studied the behavior and effects of nanomaterials in soils in recent years. In this review, we explore the articles on MENMs and soil ecosystem retrieved from various databases from 2013 to 2022. We discuss the mechanisms of MENM toxicity, the current state of soil ecosystem, the ecological effects of MENMs on soil microbes, earthworms, and plants, and the ways by which soil organisms take up MENMs. We now know that although MENMs have positive effects on soil ecosystem, their potential hazards are not negligible. Therefore, it is necessary to investigate the effects of MENMs on soil organisms. Meanwhile, we should pay more attention to the negative effects of MENMs on soil ecosystem while exploring their positive effects on soil ecosystem in future research.

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模块式钢板桩在市政管道改造中的应用

智能建筑与工程机械 2019年第7期1卷 59-61页

作者：朱卫臣中铁十六局集团第四工程有限公司北京101400

北京怀柔北大街作为怀柔区最长主干道其改造工程涉及道路改造和地下管线改造两方面内容。为了克服既有管线、地质条件及交通导改等困难。本工程通过采用模块式钢板桩工艺,安全快速的完成了污水改造工程。实践证明该工艺的实施为以后类... 详细信息

北京怀柔北大街作为怀柔区最长主干道其改造工程涉及道路改造和地下管线改造两方面内容。为了克服既有管线、地质条件及交通导改等困难。本工程通过采用模块式钢板桩工艺,安全快速的完成了污水改造工程。实践证明该工艺的实施为以后类似地下管线改造工程提供了有效参考。

关键词：既有管线管线改造模块式钢板桩