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功率密度 1

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盐度差能,压力延缓渗透,反向电渗析 1

盐度梯度(蓝色)能量 1

纳米孔发电机 1

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Responses of microbial interactions to elevated salinity in activated sludge microbial community

《环境科学与工程前沿(英文)》 2023年 第17卷 第5期 doi: 10.1007/s11783-023-1660-x

摘要:

● Salinity led to the elevation of NAR over 99.72%.

关键词: Elevated salinity     Activated sludge system     Pollution removal     Microbial interactions     Competitive relationship    

Multistage-batch bipolar membrane electrodialysis for base production from high-salinity wastewater

《化学科学与工程前沿(英文)》 2022年 第16卷 第5期   页码 764-773 doi: 10.1007/s11705-021-2114-2

摘要: Bipolar membrane electrodialysis (BMED) is considered a state-of-the-art technology for the conversion of salts into acids and bases. However, the low concentration of base generated from a traditional BMED process may limit the viability of this technology for a large-scale application. Herein, we report an especially designed multistage-batch (two/three-stage-batch) BMED process to increase the base concentration by adjusting different volume ratios in the acid (Vacid), base (Vbase), and salt compartments (Vsalt). The findings indicated that performance of the two-stage-batch with a volume ratio of Vacid:Vbase:Vsalt = 1:1:5 was superior in comparison to the three-stage-batch with a volume ratio of Vacid:Vbase:Vsalt = 1:1:2. Besides, the base concentration could be further increased by exchanging the acid produced in the acid compartment with fresh water in the second stage-batch process. With the two-stage-batch BMED, the maximum concentration of the base can be obtained up to 3.40 mol∙L–1, which was higher than the most reported base production by BMED. The low energy consumption and high current efficiency further authenticate that the designed process is reliable, cost-effective, and more productive to convert saline water into valuable industrial commodities.

关键词: bipolar membrane electrodialysis     multistage-batch     base production     high-salinity wastewater    

Effect of seawater salinity on the synthesis of zeolite from coal fly ash

Yanqing YU, Xiaoliang LI, Xiaolan ZOU, Xiaobin ZHU

《环境科学与工程前沿(英文)》 2014年 第8卷 第1期   页码 54-61 doi: 10.1007/s11783-013-0493-4

摘要: A novel method for the synthesis of zeolite was developed in this paper. The synthesis was carried out by hydrothermal activation after alkali fusion and coal fly ash (CFA) was used as raw material with seawater of different salinities. Seawater salinity was varied from 32 to 88 for zeolite crystallization during the hydrothermal process. The results show that seawater salinity plays an important role in zeolite synthesis with CFA during hydrothermal treatment. The products were a mixture of NaX zeolite and hydroxysodalite; seawater salinity more strongly affected the crystallization than the type and chemical composition of the zeolites. The yield of CFA transformed into zeolite gradually rose with the increase in salinity, reaching a transformation rate of 48%–62% as the salinity increased from 32 to 88, respectively. The proposed method allows for the efficient disposal of by-products; therefore, the application of seawater in zeolite synthesis presents promising economic and ecological benefits.

关键词: coal fly ash (CFA)     seawater salinity     zeolite synthesis    

Effect of salinity on community structure and naphthalene dioxygenase gene diversity of a halophilic

Tingting Fang, Ruisong Pan, Jing Jiang, Fen He, Hui Wang

《环境科学与工程前沿(英文)》 2016年 第10卷 第6期 doi: 10.1007/s11783-016-0888-0

摘要: Various salinities affected the PAH-biodegrading community structure. Various salinities affected the growth of strains with different salt tolerance. The two genes belonged to a new divergent cluster of the known -like genes. The two main genes had correlations with the phenanthrene degradation. The aim of this study is to analyze the effect of salinity on polycyclic aromatic hydrocarbons (PAHs) biodegradation, community structure and naphthalene dioxygenase gene ( ) diversity of a halophilic bacterial consortium with the denaturing gradient gel electrophoresis (DGGE) approach. The consortium was developed from oil-contaminated saline soil after enrichment for six times, using phenanthrene as the substrate. The prominent species in the bacterial consortium at all salinities were identified as halophilic bacteria , , , , and uncultured bacteria. The predominant microbes gradually changed associating with the saline concentration fluctuations ranging from 0.1% to 25% (w/v). Two alpha subunits were dominant at salinities ranging from 0.1% to 20%, while not been clearly detected at 25% salinity. Consistently, the biodegradation occurred at salinities ranging from 0.1% to 20%, while no at 25% salinity, suggesting the two genes played an important role in the degradation. The phylogenetic analysis revealed that both of the two alpha subunits were related to the classic -like gene from AN10 and PaK1, while one with identity of about 82% and the other one with identity of 90% at amino acid sequence level. We concluded that salinity greatly affected halophilic bacterial community structure and also the functional genes which were more related to biodegradation.

关键词: Phenanthrene     Halophilic bacteria     Gene diversity     Naphthalene dioxygenase genes    

Performance of activated carbon coated graphite bipolar electrodes on capacitive deionization method for salinity

Hossein D. Atoufi, Hasti Hasheminejad, David J. Lampert

《环境科学与工程前沿(英文)》 2020年 第14卷 第6期 doi: 10.1007/s11783-020-1278-1

摘要: Abstract • Graphite bipolar electrodes act as an appropriate bed for the CDI process. • Activated carbon Coating improves the application of the electrodes. • CDI is an environmentally friendly method to apply for brackish water. • Initial concentration is the most important parameter in the CDI method. • CDI process in a batch-mode setup needs more development. This research investigates a capacitive deionization method for salinity reduction in a batch reactor as a new approach for desalination. Reductions of cost and energy compared with conventional desalination methods are the significant advantages of this approach. In this research, experiments were performed with a pair of graphite bipolar electrodes that were coated with a one-gram activated carbon solution. After completing preliminary tests, the impacts of four parameters on electrical conductivity reduction, including (1) the initial concentration of feed solution, (2) the duration of the tests, (3) the applied voltage, and (4) the pH of the solution, were examined. The results show that the maximum efficiency of electrical conductivity reduction in this laboratory-scale reactor is about 55%. Furthermore, the effects of the initial concentration of feed solution are more significant than the other parameters. Thus, using the capacitive deionization method for water desalination with low and moderate salt concentrations (i.e., brackish water) is proposed as an affordable method. Compared with conventional desalination methods, capacitive deionization is not only more efficient but also potentially more environmentally friendly.

关键词: Capacitive deionization (CDI)     Desalination     Electrical conductivity (EC)     Graphite bipolar electrode     Activated carbon coated (ACC)    

heterotrophic nitrification-aerobic denitrification bacterium TJPU05 suitable for nitrogen removal from high-salinity

《环境科学与工程前沿(英文)》 2022年 第16卷 第6期 doi: 10.1007/s11783-021-1503-6

摘要:

H. venusta TJPU05 showed excellent HN-AD ability at high salinity.

关键词: Salt-tolerant bacteria     H. venusta TJPU05     Heterotrophic nitrification and aerobic denitrification     High-salinity wastewater    

Salinity exchange between seawater/brackish water and domestic wastewater through electrodialysis for

《环境科学与工程前沿(英文)》 2023年 第17卷 第2期 doi: 10.1007/s11783-023-1616-1

摘要:

● Present a general concept called “salinity exchange”.

关键词: Desalination     Potable water reuse     Ion-exchange membrane     Salinity gradient energy     Wastewater discharge    

盐度差能:现状和新趋势

Olivier Schaetzle, Cees J. N. Buisman

《工程(英文)》 2015年 第1卷 第2期   页码 164-166 doi: 10.15302/J-ENG-2015046

摘要:

在本文中,我们概述了盐度梯度技术的最新发展情况。在描述最先进盐度梯度技术的发展现状之前,我们首先介绍了盐度差能概念。本文以盐度梯度技术新兴领域中的新趋势作为结尾。

关键词: 盐度差能,压力延缓渗透,反向电渗析    

基于纳米孔渗透获取盐度梯度能量发电的可行性研究 Article

王樟新, Li Wang, Menachem Elimelech

《工程(英文)》 2022年 第9卷 第2期   页码 51-60 doi: 10.1016/j.eng.2021.02.016

摘要:

随着具有离子选择性纳米通道的新型材料的研发,一种获取盐度梯度(蓝色)能量的新技术被提出,即纳米孔发电机(NPG)。在本研究中,我们对膜片尺度和组件尺度的NPG运行的实际性能进行了全面分析。结果表明,虽然NPG 膜片可以在理想条件下产生超高的功率密度,但由于浓度极化效应,实际运行中NPG膜片上产生的功率密度很难达到10 W·m−2。对于组件尺度的NPG运行,我们估算了功率密度和可提取比能(即使用单位总体积工作溶液可产生的能量),并基于浓度极化与高浓度溶液和低浓度溶液的混合程度之间的相互作用,阐明运行条件对这两个指标的影响。此外,我们还开发了一个用来评估NPG 系统可行性的模型框架。结果表明,对于使用海水与河水的NPG 系统,总可提取比能非常低(约0.1 kW·h·m−3),且受到系统运行能耗的影响(特别是海水和河水溶液的汲取与预处理能耗)。总的来说,NPG系统产生的净可提取比能(< 0.025 kW·h·m−3)和净功率密度(< 0.1 W·m−2)非常低。我们的研究重点指出了NPG在现实运行中存在极大的局限性,进而对NPG作为一种蓝色能量收集技术的可行性提出了质疑。

关键词: 纳米孔发电机     盐度梯度(蓝色)能量     功率密度     可提取比能    

Sequence of the main geochemical controls on the Cu and Zn fractions in the Yangtze River estuarine sediments

Shou ZHAO,Dongxin WANG,Chenghong FENG,Ying WANG,Zhenyao SHEN

《环境科学与工程前沿(英文)》 2016年 第10卷 第1期   页码 19-27 doi: 10.1007/s11783-014-0723-4

摘要: Metal speciation can provide sufficient information for environmental and geochemical researches. In this study, based on the speciation determination of Cu and Zn in the Yangtze Estuary sediments, roles of eight geochemical controls (i.e., total organic carbon (TOC), clay, Fe/Mn in five chemical fractions and salinity) are fully investigated and sequenced with correlation analysis (CA) and principal components analysis (PCA). Results show that TOC, clay and Fe/Mn oxides are key geochemical factors affecting the chemical speciation distributions of Cu and Zn in sediments, while the role of salinity appears to be more indirect effect. The influencing sequence generally follows the order: TOC>clay>Mn oxides>Fe oxides>salinity. Among the different fractions of Fe/Mn oxides, residual and total Fe content, and exchangeable and carbonate Mn exert the greatest influences, while exchangeable Fe and residual Mn show the poorest influences.

关键词: chemical speciation     geochemical factors     estuaries     sediments     correlation     salinity    

Mechanistic insight into the biofilm formation and process performance of a passive aeration ditch (PAD) for decentralized wastewater treatment

《环境科学与工程前沿(英文)》 2022年 第16卷 第7期 doi: 10.1007/s11783-021-1494-3

摘要:

• A Passive Aeration Ditch was developed to treat decentralized wastewater.

关键词: Decentralized wastewater     Passive aeration ditch     Biofilm formation     C/N ratio     Salinity     Model simulation    

Optimization of the O/HO process with response surface methodology for pretreatment of mother liquor of gas field wastewater

《环境科学与工程前沿(英文)》 2021年 第15卷 第4期 doi: 10.1007/s11783-020-1371-5

摘要:

• Real ML-GFW with high salinity and high organics was degraded by O3/H2O2 process.

关键词: High salinity     High organic matters     Gas field wastewater     O3/H2O2     Response surface methodology    

Efficient photoelectrochemical oxidation of rhodamine B on metal electrodes without photocatalyst or supporting electrolyte

Xuejiao Wang, Xiang Feng, Jing Shang

《环境科学与工程前沿(英文)》 2018年 第12卷 第6期 doi: 10.1007/s11783-018-1061-8

摘要:

•The efficient PEC degradation of RhB is realized using no photocatalyst.

•The efficient PEC degradation of RhB features the low salinity.

•The PEC degradation of RhB takes place on the anode and cathode simultaneously.

关键词: Energy relay structure     Energy saving     Photocatalyst-free and low-salinity degradation     Photoelectrochemical cell    

Nitrogen removal performance of municipal reverse osmosis concentrate with low C/N ratio by membrane-aerated biofilm reactor

Xiao Quan, Kai Huang, Mei Li, Meichao Lan, Baoan Li

《环境科学与工程前沿(英文)》 2018年 第12卷 第6期 doi: 10.1007/s11783-018-1047-6

摘要:

MABR exhibits excellent TN removal performance for treating ROC with low C/N ratio.

Operating conditions should be properly controlled to achieve optimal TN removal.

Denitrifying bacteria and NOB are proved notably inhibited by high salinity stress.

The TN removal rate remains over 70% when the NaCl addition amount is below 20 g/L.

关键词: Membrane-aerated biofilm reactor (MABR)     Salinity     Total nitrogen     Reverse osmosis concentrate    

标题 作者 时间 类型 操作

Responses of microbial interactions to elevated salinity in activated sludge microbial community

期刊论文

Multistage-batch bipolar membrane electrodialysis for base production from high-salinity wastewater

期刊论文

Effect of seawater salinity on the synthesis of zeolite from coal fly ash

Yanqing YU, Xiaoliang LI, Xiaolan ZOU, Xiaobin ZHU

期刊论文

Effect of salinity on community structure and naphthalene dioxygenase gene diversity of a halophilic

Tingting Fang, Ruisong Pan, Jing Jiang, Fen He, Hui Wang

期刊论文

Performance of activated carbon coated graphite bipolar electrodes on capacitive deionization method for salinity

Hossein D. Atoufi, Hasti Hasheminejad, David J. Lampert

期刊论文

heterotrophic nitrification-aerobic denitrification bacterium TJPU05 suitable for nitrogen removal from high-salinity

期刊论文

Salinity exchange between seawater/brackish water and domestic wastewater through electrodialysis for

期刊论文

盐度差能:现状和新趋势

Olivier Schaetzle, Cees J. N. Buisman

期刊论文

基于纳米孔渗透获取盐度梯度能量发电的可行性研究

王樟新, Li Wang, Menachem Elimelech

期刊论文

Sequence of the main geochemical controls on the Cu and Zn fractions in the Yangtze River estuarine sediments

Shou ZHAO,Dongxin WANG,Chenghong FENG,Ying WANG,Zhenyao SHEN

期刊论文

Mechanistic insight into the biofilm formation and process performance of a passive aeration ditch (PAD) for decentralized wastewater treatment

期刊论文

Optimization of the O/HO process with response surface methodology for pretreatment of mother liquor of gas field wastewater

期刊论文

Efficient photoelectrochemical oxidation of rhodamine B on metal electrodes without photocatalyst or supporting electrolyte

Xuejiao Wang, Xiang Feng, Jing Shang

期刊论文

Nitrogen removal performance of municipal reverse osmosis concentrate with low C/N ratio by membrane-aerated biofilm reactor

Xiao Quan, Kai Huang, Mei Li, Meichao Lan, Baoan Li

期刊论文

Jan Hopmans:农田土地和水分利用:认知差距及实践与管理建议(2019年8月22日)

2021年04月23日

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