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Functional characterization of a thermostable methionine adenosyltransferase from

Yanhui Liu,Biqiang Chen,Zheng Wang,Luo Liu,Tianwei Tan

《化学科学与工程前沿（英文）》 2016年 第10卷 第2期   页码 238-244 doi: 10.1007/s11705-016-1566-2

摘要： MATTt (a thermostable methionine adenosyltransferase from HB27) was overexpressed in and purified using Ni-NTA affinity column. The enzymatic activity of MATTt was investigated in a temperature range from 30 °C to 90 °C, showing that MATTt exhibited a high enzymatic activity and good thermostability at 80 °C. Circular dichroism spectra reveals that MATTt contains high portion of -sheet structures contributing to the thermostability of MATTt. The kinetic parameter, is 4.19 mmol/L and 1.2 mmol/L for ATP and methionine, respectively. MATTt exhibits the highest enzymatic activity at pH 8. Cobalt (Co ) and zinc ion (Zn ) enhances remarkably the activity of MATTt compared to the magnesium ion (Mg ). All these results indicated that the thermostable MATTt has great potential for industry applications.

关键词： ion-preference     methionine adenosyltransferase     secondary structure     thermostability     Thermus thermophilus    

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Fuel type preference of taxi driver and its implications for air emissions

Feng WANG,Beibei LIU,Bing ZHANG,Jun BI

《环境科学与工程前沿（英文）》 2015年 第9卷 第4期   页码 702-711 doi: 10.1007/s11783-014-0665-x

摘要： Natural gas became an available fuel for taxis in 2005 and had occupied a market share of 43.6% in taxi industry till 2010 in Nanjing, China. To investigate the energy replacement pattern as well as the pollutants reduction potential of the taxi industry, first, the fuel preference determinants of taxi drivers for their next taxis are analyzed. Results show that as an important alternative for the traditional gasoline, natural gas is widely accepted (75%) by taxi drivers. Different from the previous studies which focused on the early stage of cleaner fuel replacement, taxi drivers with various characteristics (such as age, working experience, and education level) are consistent with their fuel preference when they choose their next taxis. Result suggests that policies that concern consumers with specific characteristics may have little effects on the change of the market share, when the alternative fuel market has been developed well. In addition, the increased share of gas in the fuel market achieves a 7.2% reduction of energy consumption. Considering life cycle emissions, the following air pollutants, namely Greenhouse Gases (GHGs), carbonic oxide (CO), nitrogen oxide (NO ), particulate matters (PM) and hydrocarbons (C H ), gain 10.0%, 3.5%, 20.5%, 36.1%, and 26.4% of reduction respectively. Assuming all taxi fleets powered by natural gas with local policy intervention, the energy conservation and the five major air pollutant emissions could achieve the maximum reductions with 12.2%, 16.0%, 8.8%, 22.5%, 44.2%, and 49.4% correspondingly.

关键词： fuel preference     energy replacement     environmental impacts     taxi    

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ENVIRONMENTAL ATTITUDES AND CONSUMER PREFERENCE FOR ENVIRONMENTALLY-FRIENDLY BEVERAGE PACKAGING: THE

《农业科学与工程前沿（英文）》 2023年 第10卷 第1期   页码 95-108 doi: 10.15302/J-FASE-2022478

摘要：

● Consumer preference for environmentally-friendly beverage packaging was investigated.

关键词： China     consumer preference     food and beverage packaging     green identity label     information treatment     plastics    

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Optimal risk allocation in alliance infrastructure projects: A social preference perspective

Xiang DING, Qian LI

《工程管理前沿（英文）》 2022年 第9卷 第2期   页码 326-336 doi: 10.1007/s42524-020-0145-x

摘要： The mechanism of risk allocation is designed to protect all stakeholders, and it is vital to project success. Qualitative and quantitative ways of optimizing risk allocation have been well documented in extant literature (e.g., allocation principles, models, and solutions), and the foci of existing research are usually the maximization of rational utility. Few research has focused on partners’ social preferences affecting the output of risk allocation. This study presents a quantitative approach based on modeling alliance member (AM)’s inequity aversion (IA) to analyze risk-sharing arrangements in an alliance project. Fehr and Schmidt’s inequity-aversion model is integrated into modeling partner’s utility. This paper derives results for an alliance leader (AL)’s optimal risk-sharing ratio and AM’s optimal risk-management effort simultaneously. The derivation is based on solving a restrained optimization problem using the conception and methods from Stackelberg game theory. Results show that an AM’s IA significantly affects risk allocation between AL and AM. Specifically, envious preference is positively related to AL’s optimal risk-sharing ratio, whereas guilty preference negatively affects AL’s optimal risk-sharing ratio. These findings will be of interest to academics and practitioners involved in designing alliance negotiations.

关键词： public project     contract design     risk sharing     inequity aversion     governance    

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DIP-MOEA：一种形式化表达决策者偏好的双重网格交互偏好多目标进化算法 Research Article

赵禄达1,2,王斌1,2,姜晓平1,2,卢义成3,胡以华1,2

《信息与电子工程前沿（英文）》 2022年 第23卷 第11期   页码 1714-1732 doi: 10.1631/FITEE.2100508

摘要：

几乎所有现有的基于偏好的多目标进化算法(MOEA)给出的最终解集都与决策者偏好信息的表示存在一定距离。因此，提出一种多目标优化算法，称为双重网格交互式基于偏好的多目标进化算法(DIP-MOEA)，该算法明确考虑了决策者偏好。首先根据实际多目标优化问题(MOPs)的优化目标和决策者偏好映射隶属度函数，生成决策偏好度网格和偏好误差网格。其次，提出偏好度支配和偏好误差支配两种种群支配方式，并利用该方案更新两个网格中的种群。最后综合两个网格中的种群并结合决策者偏好交互信息可进行偏好多目标优化交互。为验证DIP-MOEA性能，我们在基本DTLZ系列函数和多目标背包问题上对DIP-MOEA进行测试，并将其与几种流行的基于偏好的多目标进化算法进行比较。实验结果表明，DIP-MOEA能较好表达决策者偏好信息，提供满足决策者偏好的解集，快速求解测试问题结果，并在最终解集的Pareto前沿分布性具有较好表现。

关键词： 多目标进化算法（MOEA）；决策者偏好形式化；种群更新策略；偏好交互    

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Advancing ion-exchange membranes to ion-selective membranes: principles, status, and opportunities

《环境科学与工程前沿（英文）》 2023年 第17卷 第2期 doi: 10.1007/s11783-023-1625-0

摘要：

● IEM ion/ion selectivities of charge, valence, & specific ion are critically assessed.

关键词： Ion-exchange membranes     Selectivity     Separations    

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Alumina modified sodium vanadate cathode for aqueous zinc-ion batteries

《能源前沿（英文）》   页码 775-781 doi: 10.1007/s11708-023-0902-8

摘要： Aqueous zinc-ion batteries (ZIBs) have great prospects for widespread application in massive scale energy storage. By virtue of the multivalent state, open frame structure and high theoretical specific capacity, vanadium (V)-based compounds are a kind of the most developmental potential cathode materials for ZIBs. However, the slow kinetics caused by low conductivity and the capacity degradation caused by material dissolution still need to be addressed for large-scale applications. Therefore, sodium vanadate Na2V6O16·3H2O (NVO) was chosen as a model material, and was modified with alumina coating through simple mixing and stirring methods. After Al2O3 coating modification, the rate capability and long-cycle stability of Zn//NVO@Al2O3 battery have been significantly improved. The discharge specific capacity of NVO@Al2O3 reach up to 228 mAh/g (at 4 A/g), with a capacity reservation rate of approximately 68% after 1000 cycles, and the Coulombic efficiency (CE) is close to 100%. As a comparison, the capacity reservation rate of Zn//NVO battery is only 27.7%. Its superior electrochemical performance is mainly attributed to the Al2O3 coating layer, which can increase zinc-ion conductivity of the material surface, and to some extent inhibit the dissolution of NVO, making the structure stable and improving the cyclic stability of the material. This paper offers new prospects for the development of cathode coating materials for ZIBs.

关键词： cathodes     aqueous zinc-ion batteries     sodium vanadate     alumina     coating    

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Vanadium oxide cathode with synergistic engineering of calcium-ion intercalation and polyaniline coatingfor high performance zinc-ion batteries

《化学科学与工程前沿（英文）》 2023年 第17卷 第9期   页码 1244-1253 doi: 10.1007/s11705-022-2293-5

摘要： Vanadium oxides as cathode for zinc-ion batteries have attracted much attention because of their high theoretical capacity, flexible layered structure and abundant resources. However, cathodes are susceptible to the collapse of their layered structure and the dissolution of vanadium after repeated long cycles, which worsen their capacities and cycling stabilities. Herein, a synergistic engineering of calcium-ion intercalation and polyaniline coating was developed to achieve the superior electrochemical performance of vanadium pentoxide for zinc-ion batteries. The pre-intercalation of calcium-ion between vanadium pentoxide layers as pillars increase the crystal structure’s stability, while the polyaniline coating on the cathodes improves the conductivity and inhibits the dissolution of vanadium. This synergistic engineering enables that the battery system based-on the polyaniline coated calcium vanadate cathode to deliver a high capacity of 406.4 mAh·g−1 at 1 A·g−1, an ultralong cycle life over 6000 cycles at 10 A·g−1 with 93% capacity retention and high-rate capability. The vanadium oxide cathode with synergistic engineering of calcium-ion intercalation and polyaniline coating was verified to effectively improve the electrochemical performance of zinc-ion batteries.

关键词： zinc-ion battery     CaV8O20     polyaniline coating     synergistic engineering     high capacity     long durability    

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Ion-imprinted silica gel and its dynamic membrane for nickel ion removal from wastewaters

Jiehui Zeng, Jianxian Zeng, Hu Zhou, Guoqing Liu, Zhengqiu Yuan, Jian Jian

《化学科学与工程前沿（英文）》 2020年 第14卷 第6期   页码 1018-1028 doi: 10.1007/s11705-020-1915-z

摘要： An ion-imprinted sorbent (IIP) was prepared by using Ni as template, 3-[2-(2-aminoethylamino) ethylamino] propyl-trimethoxysilane as functional monomer, and silica gel as carrier. The adsorption performance of IIP towards Ni was investigated. IIP showed a higher adsorption capacity than that of non-imprinted sorbent, and it also exhibited high selectivity for Ni in the presence of Cu and Zn ions. Then, IIP was used to form a dynamic membrane onto the surface of ceramic membrane for treatment of electroplating wastewater containing Ni . Compared with ceramic membrane, IIP dynamic membrane had much higher steady membrane flux, and also rejected Ni to obtain a lower concentration of Ni in the permeate fluid. Perhaps it is suitable for future practice applications.

关键词： ion-imprinted     nickel ion     dynamic membrane     adsorption    

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Highly selective metal recovery from spent lithium-ion batteries through stoichiometric hydrogen ion

Weiguang Lv, Xiaohong Zheng, Li Li, Hongbin Cao, Yi Zhang, Renjie Chen, Hancheng Ou, Fei Kang, Zhi Sun

《化学科学与工程前沿（英文）》 2021年 第15卷 第5期   页码 1243-1256 doi: 10.1007/s11705-020-2029-3

摘要： Spent lithium-ion battery recycling has attracted significant attention because of its importance in regard to the environment and resource importance. Traditional hydrometallurgical methods usually leach all valuable metals and subsequently extract target meals to prepare corresponding materials. However, Li recovery in these processes requires lengthy operational procedures, and the recovery efficiency is low. In this research, we demonstrate a method to selectively recover lithium before the leaching of other elements by introducing a hydrothermal treatment. Approximately 90% of Li is leached from high-Ni layered oxide cathode powders, while consuming a nearly stoichiometric amount of hydrogen ions. With this selective recovery of Li, the transition metals remain as solid residue hydroxides or oxides. Furthermore, the extraction of Li is found to be highly dependent on the content of transition metals in the cathode materials. A high leaching selectivity of Li (>98%) and nearly 95% leaching efficiency of Li can be reached with LiNi Co Mn O . In this case, both the energy and material consumption during the proposed Li recovery is significantly decreased compared to traditional methods; furthermore, the proposed method makes full use of H to leach Li . This research is expected to provide new understanding for selectively recovering metal from secondary resources.

关键词： recycling     spent LIBs     selective recovery     hydrothermal treatment    

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Preparation of lithium ion-sieve and utilizing in recovery of lithium from seawater

Lu WANG, Changgong MENG, Wei MA

《化学科学与工程前沿（英文）》 2009年 第3卷 第1期   页码 65-67 doi: 10.1007/s11705-009-0105-9

摘要： Lithium is one of the most important light metals, which is widely used as raw materials for large-capacity rechargeable batteries, light aircraft alloys and nuclear fusion fuel. Seawater, which contains 250 billion tons of lithium in total, has thus recently been noticed as a possible resource of lithium. While, since the average concentration of lithium in seawater is quite low (0.17 mg·L ), enriching it to an adequate high density becomes the primary step for industrial applications. The adsorption method is the most prospective technology for increasing the concentration of lithium in liquid. Among the adsorbents for lithium, the ion-sieve is a kind of special absorbent which has high selectivity for Li , especially the spinel manganese oxides (SMO), which among the series of ion-sieves, has become the most promising adsorption material for lithium. In this study, the SMO ion-sieve was prepared by a coprecipitation method. The preparation conditions were discussed and the sample characters were analyzed. Recovery of Li from seawater were studied in batch experiments using prepared ion-sieve, and the effect of solution pH and the uptake rates were also investigated in different Li solutions.

关键词： lithium     ion-sieve     seawater     spinel manganese oxide    

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Migration of ammonium nitrogen in ion-absorbed rare earth soils during and post mining: a column study

《环境科学与工程前沿（英文）》 2023年 第17卷 第8期 doi: 10.1007/s11783-023-1702-4

摘要：

● Column experiments with an inclined slope were applied to simulate NH4–N transport.

关键词： Ion-absorbed rare earth     Ammonium nitrogen transport     HYDRUS-2D     Numerical simulation    

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Control strategies for disinfection byproducts by ion exchange resin, nanofiltration and their sequential

《环境科学与工程前沿（英文）》 2023年 第17卷 第10期 doi: 10.1007/s11783-023-1725-x

摘要：

● Effects of AER adsorption and NF on DBP precursors, DBPs, and TOX were examined.

关键词： Disinfection byproducts     Control     Anion exchange resin     Nanofiltration     Cytotoxicity    

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Recent advances toward high voltage, EC-free electrolytes for graphite-based Li-ion battery

Tong Zhang, Elie Paillard

《化学科学与工程前沿（英文）》 2018年 第12卷 第3期   页码 577-591 doi: 10.1007/s11705-018-1758-z

摘要：

Lithium-ion batteries are a key technology in today’s world and improving their performances requires, in many cases, the use of cathodes operating above the anodic stability of state-of-the-art electrolytes based on ethylene carbonate (EC) mixtures. EC, however, is a crucial component of electrolytes, due to its excellent ability to allow graphite anode operation–also required for high energy density batteries–by stabilizing the electrode/electrolyte interface. In the last years, many alternative electrolytes, aiming at allowing high voltage battery operation, have been proposed. However, often, graphite electrode operation is not well demonstrated in these electrolytes. Thus, we review here the high voltage, EC-free alternative electrolytes, focusing on those allowing the steady operation of graphite anodes. This review covers electrolyte compositions, with the widespread use of additives, the change in main lithium salt, the effect of anion (or Li salt) concentration, but also reports on graphite protection strategies, by coatings or artificial solid electrolyte interphase (SEI) or by use of water-soluble binder for electrode processing as these can also enable the use of graphite in electrolytes with suboptimal intrinsic SEI formation ability.

关键词： lithium-ion     electrolyte     solid electrolyte interphase     additives     high voltage     graphite    

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g-CN-coated MnO hollow nanorod cathode for stable aqueous Zn-ion batteries

《化学科学与工程前沿（英文）》 2023年 第17卷 第2期   页码 217-225 doi: 10.1007/s11705-022-2214-7

摘要： Aqueous zinc-ion batteries are attracting considerable attention because of their high safety compared with conventional lithium-ion batteries. Manganese-based materials have been widely developed for zinc-ion batteries cathode owning to their low cost, high security and simple preparation. However, the severe volume expansion and poor stability during charging and discharging limit the further development of manganese-based cathodes. Herein, superior α-MnO2@g-C3N4 was successfully prepared for stable zinc-ion batteries (ZIBs) cathode by introducing g-C3N4 nanosheets. Compared with pure α-MnO2, α-MnO2@g-C3N4 has a specific capacity of 298 mAh·g–1 at 0.1 A·g–1. Even at 1 A·g–1, the α-MnO2@g-C3N4 still retains 100 mAh·g–1 (83.4% retention after 5000 cycles), implying its excellent cycling stability. The α-MnO2@g-C3N4-based cathode has the highest energy density (563 Wh·kg–1) and power energy density (2170 W·kg–1). This work provides new avenues for the development of a wider range of cathode materials for ZIBs.

关键词： α-MnO2 hollow nanorods     g-C3N4     heterojunction     aqueous Zn-ion batteries    

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标题 作者 时间 类型 操作

Functional characterization of a thermostable methionine adenosyltransferase from

Yanhui Liu,Biqiang Chen,Zheng Wang,Luo Liu,Tianwei Tan

期刊论文

Fuel type preference of taxi driver and its implications for air emissions

Feng WANG,Beibei LIU,Bing ZHANG,Jun BI

期刊论文

ENVIRONMENTAL ATTITUDES AND CONSUMER PREFERENCE FOR ENVIRONMENTALLY-FRIENDLY BEVERAGE PACKAGING: THE

期刊论文

Optimal risk allocation in alliance infrastructure projects: A social preference perspective

Xiang DING, Qian LI

期刊论文

DIP-MOEA：一种形式化表达决策者偏好的双重网格交互偏好多目标进化算法

赵禄达1,2,王斌1,2,姜晓平1,2,卢义成3,胡以华1,2

期刊论文

Advancing ion-exchange membranes to ion-selective membranes: principles, status, and opportunities

期刊论文

Alumina modified sodium vanadate cathode for aqueous zinc-ion batteries

期刊论文

Vanadium oxide cathode with synergistic engineering of calcium-ion intercalation and polyaniline coatingfor high performance zinc-ion batteries

期刊论文

Ion-imprinted silica gel and its dynamic membrane for nickel ion removal from wastewaters

Jiehui Zeng, Jianxian Zeng, Hu Zhou, Guoqing Liu, Zhengqiu Yuan, Jian Jian

期刊论文

Highly selective metal recovery from spent lithium-ion batteries through stoichiometric hydrogen ion

Weiguang Lv, Xiaohong Zheng, Li Li, Hongbin Cao, Yi Zhang, Renjie Chen, Hancheng Ou, Fei Kang, Zhi Sun

期刊论文

Preparation of lithium ion-sieve and utilizing in recovery of lithium from seawater

Lu WANG, Changgong MENG, Wei MA

期刊论文

Migration of ammonium nitrogen in ion-absorbed rare earth soils during and post mining: a column study

期刊论文

Control strategies for disinfection byproducts by ion exchange resin, nanofiltration and their sequential

期刊论文

Recent advances toward high voltage, EC-free electrolytes for graphite-based Li-ion battery

Tong Zhang, Elie Paillard

期刊论文

g-CN-coated MnO hollow nanorod cathode for stable aqueous Zn-ion batteries

期刊论文