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A pyrazine based metal-organic framework for selective removal of copper from strongly acidic solutions

《环境科学与工程前沿（英文）》 2023年 第17卷 第3期 doi: 10.1007/s11783-023-1633-0

摘要：

● pz-UiO-66 was synthesized facilely by a solvothermal method.

关键词： Pyrazine     Metal-organic frameworks     Copper removal     Strong acidity     High selectivity    

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Removal of copper by modified chitosan adsorptive membrane

Xiaoshuai LIU, Zihong CHENG, Wei MA

《化学科学与工程前沿（英文）》 2009年 第3卷 第1期   页码 102-106 doi: 10.1007/s11705-009-0123-7

摘要： In this study, a novel adsorptive membrane was prepared from chitosan as the functional polymer and some additive blend solutions by solution casting method. The modified chitosan membrane was characterized by FTIR and its Water Swelling Ratio (WSR). The adsorption of copper ions on the adsorptive membrane was investigated in batch experiments. The results obtained from the experiments indicated that the membrane had a good adsorption capacity for copper ions, the optimal ionic strength and pH were 0.1 and 5-6, respectively. Compared with the Langmuir isotherm model, the experimental data were found to be following the Freundlich model.

关键词： chitosan     adsorptive membrane     copper removal     environmental engineering     heavy metal     isotherm model    

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Removal of copper ions from aqueous solution by adsorption using LABORATORIES-modified bentonite (organo-bentonite

Sandy, Velycia MARAMIS, Alfin KURNIAWAN, Aning AYUCITRA, Jaka SUNARSO, Suryadi ISMADJI

《化学科学与工程前沿（英文）》 2012年 第6卷 第1期   页码 58-66 doi: 10.1007/s11705-011-1160-6

摘要： Equilibrium, kinetic and thermodynamic aspects of the adsorption of copper ions from an aqueous solution using linear alkylbenzene sulfonate (LABORATORIES) modified bentonite (organo-bentonite) are reported. Modification of bentonite was performed via microwave heating with a concentration of LABORATORIES surfactant equivalent to 1.5 times that of the cation exchange capacity (CEC) of the raw bentonite. Experimental parameters affecting the adsorption process such as pH, contact time and temperature were studied. Several adsorption equations (e.g., Langmuir, Freundlich, Sips and Toth) with temperature dependency were used to correlate the equilibrium data. These models were evaluated based on the theoretical justifications of each isotherm parameter. The Sips model had the best fit for the adsorption of copper ions onto organo-bentonite. For the kinetic data, the pseudo-second order model was superior to the pseudo-first order model. Thermodynamically, the adsorption of copper ions occurs via chemisorption and the process is endothermic (Δ >0), irreversible (Δ >0) and nonspontaneous (Δ >0).

关键词： heavy metal     copper     adsorption     organo-bentonite     temperature dependent    

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Tailoring the simultaneous abatement of methanol and NO on Sb-Ce-Zr catalysts via copper modification

《环境科学与工程前沿（英文）》 2022年 第16卷 第10期 doi: 10.1007/s11684-022-1565-0

摘要：

● Cu addition enhances CH3OH oxidation and alleviates its inhibitory effect on SCR.

关键词： Copper modification     Sb-CeZr2Ox catalyst     NOx     Methanol     Simultaneous removal    

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Insights into influence of aging processes on zero-valent iron modified biochar in copper(II) immobilization

《化学科学与工程前沿（英文）》 2023年 第17卷 第7期   页码 880-892 doi: 10.1007/s11705-022-2282-8

摘要： The zero-valent iron modified biochar materials are widely employed for heavy metals immobilization. However, these materials would be inevitably aged by natural forces after entering into the environment, while there are seldom studies reported the aging effects of zero-valent iron modified biochar. In this work, the hydrogen peroxide and hydrochloric acid solution were applied to simulate aging conditions of zero-valent iron modified biochar. According to the results, the adsorption capacity of copper(II) contaminants on biochar, zero-valent iron modified biochar-1, and zero-valent iron modified biochar-2 after aging was decreased by 15.36%, 22.65% and 23.26%, respectively. The surface interactions were assigned with chemisorption occurred on multi-molecular layers, which were proved by the pseudo-second-order and Langmuir models. After aging, the decreasing of capacity could be mainly attributed to the inhibition of ion-exchange and zero-valent iron oxidation. Moreover, the plant growth and soil leaching experiments also proved the effects of aging treatment, the zero-valent iron modified biochar reduced the inhibition of copper(II) bioavailability and increased the mobility of copper(II) after aging. All these results bridged the gaps between bio-adsorbents customization and their environmental behaviors during practical agro-industrial application.

关键词： zero-valent iron modified biochar     aging processes     copper removal     adsorption     pilot-scale experiments    

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高效选择性PVDF中空纤维膜设计及除铯研究 Article

丁士元, 张利兰, 李阳, 候立安

《工程（英文）》 2019年 第5卷 第5期   页码 865-871 doi: 10.1016/j.eng.2019.07.021

摘要：

本研究通过一种简单有效的接枝方法成功制备了亚铁氰化铜/二氧化硅/聚偏氟乙烯（CuFC/SiO2/PVDF）中空纤维膜。PVDF中空纤维膜通过SiO2中间层将CuFC纳米颗粒固定以去除Cs。分别通过扫描电子显微镜和X射线能谱仪分析了改性膜表面形貌和化学组成。3层CuFC和0.5% SiO2负载制备的CuFC/SiO2/PVDF膜具有非常高的膜渗透通量（49 L·m-2·h-1·bar-1）和Cs截留率（99.82%），且pH（4~10）的变化对Cs的去除率影响较小。改性膜可以通过NH4NO3进行多次有效再生。在1 mmol·L–1的共存竞争离子（K+和Na+）影响下，改性膜仍保持较高的除Cs效率（8 h分别为76.25%和88.67%），展现出对Cs的选择去除性。特别地， CuFC/SiO2/PVDF膜在处理含低浓度Cs（100 μg·L–1）的天然地表水和模拟水体时表现出非常优异的去除率（>90%）。因此，CuFC/SiO2/PVDF膜具有处理受Cs污染的放射性废水的工程应用潜力。

关键词： 铯去除     膜改性     亚铁氰化铜     聚偏氟乙烯    

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Copper and zinc interaction on water clearance and tissue metal distribution in the freshwater mussel

Tianxiang XIA, Xuehua LIU

《环境科学与工程前沿（英文）》 2011年 第5卷 第2期   页码 236-242 doi: 10.1007/s11783-010-0218-8

摘要： Copper and zinc interaction on clearance from water and distribution in different tissues was investigated for the freshwater mussel, , under laboratory conditions. Clearance rate of Cu or Zn from water was highly dependent on exposure concentration. Interaction effect was most evident at 300 μg·L Cu exposure and depressed the Zn clearance rate significantly ( <0.05). However, the presence of 100 μg·L and 300 μg·L Zn hardly affected the Cu clearance rate. The 300 μg·L Cu presence enhanced Cu accumulation in each tissue most significantly ( <0.01), but caused Zn content to decrease in the gills by 62% ( <0.05), viscera by 49% ( <0.05) and foot by 31% ( <0.05), and increase in the mantle by 97% ( <0.05) and the muscles by 243% ( <0.05) for different Zn exposure treatments. The response of metal accumulation in various tissues of the test mussels indicated that Zn transferred from the gills, viscera and foot to the mantle and muscles might be one of the important characteristics of the Zn regulatory mechanism by leading to a narrow range of Zn concentration in the different tissues.

关键词： interaction     mussel     copper     zinc     clearance     distribution    

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Identification and assessment of environmental burdens of Chinese copper production from a life cycle

Xiaolong SONG,Jianxin YANG,Bin LU,Bo LI,Guangyuan ZENG

《环境科学与工程前沿（英文）》 2014年 第8卷 第4期   页码 580-588 doi: 10.1007/s11783-013-0599-8

摘要： The environmental burdens of Chinese copper production have been identified and quantified in the context of typical technologies, materials supplies and environmental emissions by a life cycle approach. Primary and secondary copper production using copper ores and scraps, respectively, were analyzed in detail. The flash and bath smelting approaches and the recycling of copper scraps were selected as representative copper production processes. A quantitative analysis was also conducted to assess the influence of material transport distance in copper production. Life cycle assessment (LCA) results showed that resources depletion and human health contribute significantly to environmental burdens in Chinese copper production. In addition, the secondary copper production has dramatically lower environmental burdens than the primary production. There is no obvious distinction in overall environmental burdens in primary copper production by flash or bath smelting approach. However, resources depletion is lower and the damage to human health is higher for flash smelting approach. Ecosystem quality damage is slight for both approaches. Environmental burdens from the mining stage contribute most in all life cycle stages in primary copper production. In secondary copper production, the electrolytic refining stage dominates. Based on the life cycle assessment results, some suggestions for improving environmental performance were proposed to meet the sustainable development of Chinese copper industry.

关键词： copper production     environmental burden     life cycle assessment     refined copper    

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迎接铜工业挑战——低成本处理硫化铜精矿途径的思考

朱祖泽

《中国工程科学》 2000年 第2卷 第2期   页码 87-90

摘要：

对过去10年来铜冶炼的技术进步和铜价格的变化作出的简要回顾指出，未来铜市场的竞争是取决于冶炼技术的生产成本的竞争。坚持自我研究开发和引进相结合才能保证我国铜工业健康稳定发展，并能应付国际竞争。评述了现在强氧化-PS转炉吹炼-火法精炼-电解流程的不足；分析了火湿法联合流程的可能性及依据；新的火湿法联合流程将有更强的竞争优势。

关键词： 未来铜工业     硫化铜精矿     低成本处理    

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Variability of waste copper slag concrete and its effect on the seismic safety of reinforced concrete

《结构与土木工程前沿（英文）》 2022年 第16卷 第1期   页码 117-130 doi: 10.1007/s11709-021-0788-7

摘要： Proven research output on the behavior of structures made of waste copper slag concrete can improve its utilization in the construction industry and thereby help to develop a sustainable built environment. Although numerous studies on waste copper slag concrete can be found in the published literature, no research has focused on the structural application of this type of concrete. In particular, the variability in the strength properties of waste copper slag concrete, which is required for various structural applications, such as limit state design formulation, reliability-based structural analysis, etc., has so far not attracted the attention of researchers. This paper quantifies the uncertainty associated with the compressive-, flexural- and split tensile strength of hardened concrete with different dosages of waste copper slag as fine aggregate. Best-fit probability distribution models are proposed based on statistical analyses of strength data generated from laboratory experiments. In addition, the paper presents a reliability-based seismic risk assessment of a typical waste copper slag incorporated reinforced concrete framed building, considering the proposed distribution model. The results show that waste copper slag can be safely used for seismic resistant structures as it results in an identical probability of failure and dispersion in the drift demand when compared with a conventional concrete building made of natural sand.

关键词： waste copper slag     quantification of variability     goodness-of-fit test     seismic risk assessment     PSDM    

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Microwave enhanced stabilization of copper in artificially contaminated soil

Hua ZHANG, Zhiliang ZHU, Noboru YOSHIKAWA

《环境科学与工程前沿（英文）》 2011年 第5卷 第2期   页码 205-211 doi: 10.1007/s11783-010-0290-2

摘要： Microwave processing was used to stabilize copper ions in soil samples. Its effects on the stabilization efficiency were studied as a function of additive, microwave power, process time, and reaction atmosphere. The stabilization efficiency of the microwave process was evaluated based on the results of the toxicity characteristic leaching procedure (TCLP) test. The results showed that the optimal experimental condition contained a 700 W microwave power, 20 min process time and 3 iron wires as the additive, and that the highest stabilization efficiency level was more than 70%. In addition, the different reaction atmospheres showed no apparent effect on the stabilization efficiency of copper in the artificially contaminated soil. According to the result of the Tessier sequential extraction, the partial species of copper in the contaminated soil was deduced to transform from unstable species to stable states after the microwave process.

关键词： microwave     copper     stabilization    

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Cuprous oxide/copper oxide interpenetrated into ordered mesoporous cellulose-based carbon aerogels for

《化学科学与工程前沿（英文）》 2023年 第17卷 第7期   页码 918-929 doi: 10.1007/s11705-023-2305-0

摘要： The casual discharge of dyes from industrial settings has seriously polluted global water systems. Owing to the abundance of biomass resources, preparing photocatalysts for photocatalytic degradation of dyes is significant; however, it still remains challenging. In this work, a cuprous oxide/copper oxide composite was interpenetrated onto carbon nanosheets of cellulose-based flexible carbon aerogels (Cu2O/CuO@CAx) via a simple freeze-drying-calcination method. The introduction of the carbon aerogel effectively prevents the aggregation of the cuprous oxide/copper oxide composite. In addition, Cu2O/CuO@CA0.2 has a larger specific surface area, stronger charge transfer capacity, and lower recombination rate of photogenerated carriers than copper oxide. Moreover, Cu2O/CuO@CA0.2 exhibited high photocatalytic activity in decomposing methylene blue, with a degradation rate reaching up to 99.09% in 60 min. The active oxidation species in the photocatalytic degradation process were systematically investigated by electron spin resonance characterization and poisoning experiments, among which singlet oxygen played a major role. In conclusion, this work provides an effective method for preparing photocatalysts using biomass resources in combination with different metal oxides. It also promotes the development of photocatalytic degradation of dyes.

关键词： carbon aerogel     photocatalysis     dye degradation     biomass     cuprous oxide/copper oxide    

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Nano-copper ions assembled cellulose-based composite with antibacterial activity for biodegradable personal

《化学科学与工程前沿（英文）》 2023年 第17卷 第10期   页码 1544-1554 doi: 10.1007/s11705-022-2288-2

摘要： The current SARS-CoV-2 pandemic has resulted in the widespread use of personal protective equipment, particularly face masks. However, the use of commercial disposable face masks puts great pressure on the environment. In this study, nano-copper ions assembled cotton fabric used in face masks to impart antibacterial activity has been discussed. To produce the nanocomposite, the cotton fabric was modified by sodium chloroacetate after its mercerization, and assembled with bactericidal nano-copper ions (about 10.61 mg·g–1) through electrostatic adsorption. It demonstrated excellent antibacterial activity against Staphylococcus aureus and Escherichia coli because the gaps between fibers in the cotton fabric allow the nano-copper ions to be fully released. Moreover, the antibacterial efficiency was maintained even after 50 washing cycles. Furthermore, the face mask constructed with this novel nanocomposite upper layer exhibited a high particle filtration efficiency (96.08% ± 0.91%) without compromising the air permeability (28.9 min·L–1). This green, economical, facile, and scalable process of depositing nano-copper ions onto modified cotton fibric has great potential to reduce disease transmission, resource consumption, and environmental impact of waste, while also expanding the range of protective fabrics.

关键词： cellulose-based     nanocomposite     biodegradable antibacterial fabric     nano-copper ions     face masks    

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PCDD/Fs emission, risk characterization, and reduction in China’s secondary copper production industry

Haiqian LI, Yonglong LU, Li LI

《环境科学与工程前沿（英文）》 2013年 第7卷 第4期   页码 589-597 doi: 10.1007/s11783-013-0495-2

摘要： Secondary copper production is one of the key polychlorinated dibenzo- -dioxins and dibenzofurans (PCDD/Fs) emission sources in China, but research and data on this issue are rare. In 2004, when the Stockholm Convention entered into force in China, PCDD/Fs emissions from secondary copper production contributed to 32.2% of the total release. In this paper, PCDD/Fs emission dynamics from secondary copper industry were discussed and cumulative risks were characterized. From 2004 to 2009, industrial policies played an indirect role in PCDD/Fs reduction, but its effects are still limited. The Yangtze River Delta, Pearl River Delta and central regions were among the top three of dioxin emissions from secondary copper production in China. Shanghai, Shandong, Zhejiang, and Jiangxi had comparatively higher accumulated risk and were recommended as the priority regions for promoting PCDD/Fs emission control in China. From 2009 to 2015, the PCDD/Fs emission dynamics in the secondary copper industry were presented through simulation. PCDD/Fs emission equations were established, resulting in the recommendation of control technology conversion rate at 30% for small scale smelters and 51%–57% for large and medium-sized enterprises in 2015. In conclusion, both indirect policy and direct control technology retrofitting should be integrated for more effective PCDD/Fs emission reduction in secondary copper industry.

关键词： polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs)     secondary copper production     emission     risk     China    

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Field evidence of decreased extractability of copper and nickel added to soils in 6-year field experiments

Bao Jiang, Dechun Su, Xiaoqing Wang, Jifang Liu, Yibing Ma

《环境科学与工程前沿（英文）》 2018年 第12卷 第2期 doi: 10.1007/s11783-017-0990-y

摘要： The phytotoxicity of added copper (Cu) and nickel (Ni) is influenced by soil properties and field aging. However, the differences in the chemical behavior between Cu and Ni are still unclear. Therefore, this study was conducted to investigate the extractability of added Cu and Ni in 6-year field experiments, as well as the link with their phytotoxicity. The results showed that the extractability of added Cu decreased by 6.63% (5.10%–7.90%), 22.5% (20.6%–23.9%), and 6.87% (0%–17.9%) on average for acidic, neutral, and alkaline soil from 1 to 6 years, although the phytotoxicity of added Cu and Ni did not change significantly from 1 to 6 years in the long term field experiment. Because of dissolution of Cu, when the pH decreased below 7.0, the extractability of Cu in alkaline soil by EDTA at pH 4.0 could not reflect the effects of aging. For Ni, the extractability decreased by 18.1% (10.1%–33.0%), 63.0% (59.2%–68.8%), and 22.0% (12.4%–31.8%) from 1 to 6 years in acidic, neutral, and alkaline soils, respectively, indicating the effects of aging on Ni were greater than on Cu. The sum of ten sequential extractions of Cu and Ni showed that added Cu was more extractable than Ni in neutral and alkaline soil, but similar in acidic soil.

关键词： Copper     Nickel     EDTA     Sequential extraction    

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标题 作者 时间 类型 操作

A pyrazine based metal-organic framework for selective removal of copper from strongly acidic solutions

期刊论文

Removal of copper by modified chitosan adsorptive membrane

Xiaoshuai LIU, Zihong CHENG, Wei MA

期刊论文

Removal of copper ions from aqueous solution by adsorption using LABORATORIES-modified bentonite (organo-bentonite

Sandy, Velycia MARAMIS, Alfin KURNIAWAN, Aning AYUCITRA, Jaka SUNARSO, Suryadi ISMADJI

期刊论文

Tailoring the simultaneous abatement of methanol and NO on Sb-Ce-Zr catalysts via copper modification

期刊论文

Insights into influence of aging processes on zero-valent iron modified biochar in copper(II) immobilization

期刊论文

高效选择性PVDF中空纤维膜设计及除铯研究

丁士元, 张利兰, 李阳, 候立安

期刊论文

Copper and zinc interaction on water clearance and tissue metal distribution in the freshwater mussel

Tianxiang XIA, Xuehua LIU

期刊论文

Identification and assessment of environmental burdens of Chinese copper production from a life cycle

Xiaolong SONG,Jianxin YANG,Bin LU,Bo LI,Guangyuan ZENG

期刊论文

迎接铜工业挑战——低成本处理硫化铜精矿途径的思考

朱祖泽

期刊论文

Variability of waste copper slag concrete and its effect on the seismic safety of reinforced concrete

期刊论文

Microwave enhanced stabilization of copper in artificially contaminated soil

Hua ZHANG, Zhiliang ZHU, Noboru YOSHIKAWA

期刊论文

Cuprous oxide/copper oxide interpenetrated into ordered mesoporous cellulose-based carbon aerogels for

期刊论文

Nano-copper ions assembled cellulose-based composite with antibacterial activity for biodegradable personal

期刊论文

PCDD/Fs emission, risk characterization, and reduction in China’s secondary copper production industry

Haiqian LI, Yonglong LU, Li LI

期刊论文

Field evidence of decreased extractability of copper and nickel added to soils in 6-year field experiments

Bao Jiang, Dechun Su, Xiaoqing Wang, Jifang Liu, Yibing Ma

期刊论文