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Article: Reverse Osmosis Membrane Combined with Ultrasonic Cleaning for Flue Gas Desulfurization Wastewater Treatment

Chen, Xingyu / Li, Tianxin / Dou, Xiaomin / Meng, Linglong / Xu, Shuiyang

Water. 2022 Mar. 11, v. 14, no. 6

2022

Abstract: Flue gas desulfurization (FGD) wastewater treatment is currently of interest, as stringent standards have been released in order to limit the pollution emissions from the energy industry, and concerns about water scarcity are also increasing. Reverse ... ...

Abstract	Flue gas desulfurization (FGD) wastewater treatment is currently of interest, as stringent standards have been released in order to limit the pollution emissions from the energy industry, and concerns about water scarcity are also increasing. Reverse osmosis (RO) membrane is a promising alternative for highly efficient FGD wastewater treatment. However, membrane fouling strongly limits its application. This study developed a suitable treatment system by combining RO membrane with ultrasonic cleaning. The introduction of low-frequency and high-intensity ultrasonic cleaning improved the cleaning efficiency of membrane fouling, as the permeate flux recovered 49% of the reduced value within 10 min of cleaning. The lifespan of the membrane was also extended, as the time of permeate flux declined to the same level, increasing from 2 h to 4 h after ultrasonic cleaning. The effluent of the system could meet the standard of desulfurization wastewater treatment. The treatment system is feasible for FGD wastewater treatment at a laboratory scale. These findings proved that the combination of RO membrane and ultrasonic cleaning could be applied to FGD wastewater treatment. The study provided an efficient, cost-saving, and convenient way to develop the FGD wastewater treatment system.
Keywords	cost effectiveness ; energy industry ; flue gas desulfurization ; longevity ; pollution ; reverse osmosis ; ultrasonics ; wastewater treatment ; water ; water shortages
Language	English
Dates of publication	2022-0311
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article
ZDB-ID	2521238-2
ISSN	2073-4441
ISSN	2073-4441
DOI	10.3390/w14060875
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Soil erosion spatio-temporal exploration and Geodetection of driving factors using InVEST-sediment delivery ratio and Geodetector models in Dongsheng, China

Matomela, Nametso / Li, Tianxin / Ikhumhen, Harrison O. / Raimundo Lopes, Namir Domingos / Meng, Linglong

Geocarto International. 2022 Dec. 13, v. 37, no. 26 p.13039-13056

2022

Abstract: Assessment of soil erosion processes and accurately identifying erosion drivers is crucial for effective control and conservation strategies. We introduced a new approach involving the integration of the SDR of the InVEST and Geodetector models to ... ...

Abstract	Assessment of soil erosion processes and accurately identifying erosion drivers is crucial for effective control and conservation strategies. We introduced a new approach involving the integration of the SDR of the InVEST and Geodetector models to explore the spatio-temporal variability of erosion and investigate the key drivers contributing to soil erosion. The results revealed an average soil loss increase of 19 to 37 t ha⁻¹ yr⁻¹ in the watershed from 1990 to 2020, respectively. Cropland areas had the highest growth in soil loss from 26.53 in 1990 to 118.76 t ha⁻¹ yr⁻¹ in 2020. The Geodetector revealed that the key variables influencing erosion are vegetation, slope, precipitation, and aspect factors. The interaction of slope and aspect, slope and precipitation, had the strongest influence on erosion than other variables, with q values of 0.80 and 0.79, respectively. The approach of this study can be used in other regions characterized by severe soil erosion.
Keywords	cropland ; soil erosion ; vegetation ; watersheds ; China ; sediment export ; Geographic information system ; Geodetector ; RUSLE
Language	English
Dates of publication	2022-1213
Size	p. 13039-13056.
Publishing place	Taylor & Francis
Document type	Article ; Online
ISSN	1752-0762
DOI	10.1080/10106049.2022.2076912
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Bonding the Terminal Isocyanate-Related Functional Group to the Surface Manganese Ions to Enhance Li-Rich Cathode's Cycling Stability.

Fu, Chaochao / Meng, Linglong / Wang, Jinfeng / Wang, Qi / Yang, Kun / Zhang, Wenming / Li, Liping

ACS applied materials & interfaces

2021 Volume 13, Issue 15, Page(s) 17565–17576

Abstract: Capacity fading of Li-rich cathodes in the cycling process is mainly caused by the irreversible side reactions at the interface of electrode and electrolyte by reason of the lack of a corrosion resistant surface. In this work, isocyanate-related ... ...

Abstract	Capacity fading of Li-rich cathodes in the cycling process is mainly caused by the irreversible side reactions at the interface of electrode and electrolyte by reason of the lack of a corrosion resistant surface. In this work, isocyanate-related functional groups (-N═C═O groups and polyamide-like groups) were tightly bonded on the surface of Li-rich oxides through a urea decomposition gas heat-treatment. The surface isocyanate functionalization inhibits the side reaction of PF
Language	English
Publishing date	2021-04-07
Publishing country	United States
Document type	Journal Article
ISSN	1944-8252
ISSN (online)	1944-8252
DOI	10.1021/acsami.1c01726
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Role of structural parameters on strength-ductility combination of laminated carbon nanotubes/copper composites

Meng, Linglong / Xiaojun Wang / Xiaoshi Hu / Hailong Shi / Kun Wu

Composites. 2019 Jan., v. 116

2019

Abstract: Carbon nanotubes (CNTs) reinforced Cu laminated composites were constructed to analyze the effect of structural parameters on strength-ductility combination. CNTs were uniformly dispersed on Cu foils through electrophoresis deposition and embedded into ... ...

Abstract	Carbon nanotubes (CNTs) reinforced Cu laminated composites were constructed to analyze the effect of structural parameters on strength-ductility combination. CNTs were uniformly dispersed on Cu foils through electrophoresis deposition and embedded into the Cu matrix after hot pressing and rolling. Nanoscale CNTs/Cu composite layers were formed and a bimodal structure was induced. Introduction of CNTs and the induced laminated structure promote the enhancement in yield strength of ∼31 and ∼51 MPa in composites with original 100 and 30 μm Cu foils. More composite layers introduced by adopting 30 μm Cu foils inhibited the rapid concentrated plastic deformation and prolonged the crack pathway, thus realizing the strength-ductility combination. The deteriorated ductility of Cu layers in composite with original 100 μm Cu foils finally leaded to damaged ductility of the composite. This work provides a feasible way to construct the laminated composites and demonstrates the effect of structural parameters on strength-ductility combination.
Keywords	carbon nanotubes ; composite materials ; copper ; copper nanoparticles ; electrophoresis ; plastic deformation ; pressing ; rolling
Language	English
Dates of publication	2019-01
Size	p. 138-146.
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	2012223-8
ISSN	1359-835X
ISSN	1359-835X
DOI	10.1016/j.compositesa.2018.10.021
Database	NAL-Catalogue (AGRICOLA)

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Article: A LiPF6-electrolyte-solvothermal route for the synthesis of LiF/LixPFyOz-coated Li-rich cathode materials with enhanced cycling stability

Fu, Chaochao / Li, Liping / Li, Xiaoting / Meng, Linglong / Wang, Jiayun / Wang, Jinfeng / Zhang, Wenming

Journal of materials chemistry A. 2019 Oct. 15, v. 7, no. 40

2019

Abstract: Li-rich layered oxide materials are promising cathode materials for lithium ion batteries because of their high capacity and low cost. Nevertheless, the lack of a stable surface structure to suppress surface side reactions and layered-to-spinel ... ...

Abstract	Li-rich layered oxide materials are promising cathode materials for lithium ion batteries because of their high capacity and low cost. Nevertheless, the lack of a stable surface structure to suppress surface side reactions and layered-to-spinel transitions and thus rapid capacity fading is a critical problem that hinders the widespread practical applications of Li-rich layered oxide materials. In this work, a stable coating layer of LiF/LixPFyOz was introduced on the surface of Li-rich particles by a LiPF6-electrolyte-solvothermal process followed by post-sintering treatment. In the solvothermal process, the LiPF6-based electrolyte reacts with surface residues (such as H2O and Li2CO3) moderately at 80 °C, and then a thin LiF/LixPFyOz protective layer is formed. The LiF/LixPFyOz protective layer is tightly chemically bonded to the surface of Li-rich particles inhibiting surface side reactions and layered-to-spinel transitions during cycling as confirmed by dQ/dV, EIS, TEM, and XPS measurements. The obtained LiF/LixPFyOz-coated Li-rich cathode (sample LFP4) delivers an enhanced reversible discharge capacity of 210.7 mA h g−1 at 100 mA g−1 with 90.7% capacity retention after 100 cycles, while the uncoated sample LFP0 suffers from a rapid capacity fading and the capacity retention ratio is only 75.3%. Even at a higher current density of 1000 mA g−1, the discharge capacity of LiF/LixPFyOz-coated sample LFP4 is still as high as 188 mA h g−1 with a capacity retention ratio of 91.2% (much higher than 55.7% for uncoated sample LFP0) after 100 cycles, showing improved cycling stability and superior rate capability. This work demonstrates that LiF/LixPFyOz coating through the LiPF6-electrolyte-solvothermal route is a successful strategy for the modification of Li-rich oxide electrodes for the next-generation of high-energy Li-ion batteries.
Keywords	cathodes ; coatings ; electrolytes ; lithium batteries ; X-ray photoelectron spectroscopy
Language	English
Dates of publication	2019-1015
Size	p. 23149-23161.
Publishing place	The Royal Society of Chemistry
Document type	Article
ZDB-ID	2702232-8
ISSN	2050-7496 ; 2050-7488
ISSN (online)	2050-7496
ISSN	2050-7488
DOI	10.1039/c9ta09327c
Database	NAL-Catalogue (AGRICOLA)

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Article: Beyond the dimensional limitation in bio-inspired composite: Insertion of carbon nanotubes induced laminated Cu composite and the simultaneously enhanced strength and toughness

Meng, Linglong / Wang, Xiaojun / Ning, Jiangli / Hu, Xiaoshi / Fan, Guohua / Wu, Kun

Carbon. 2018 Apr., v. 130

2018

Abstract: Metal/reinforcement nanolayered composites can effectively balance the strength and toughness. However, the difficulty of inserting nanoscaled metal layers restricts their practical application. In this study, laminated carbon nanotubes (CNTs) reinforced ...

Abstract	Metal/reinforcement nanolayered composites can effectively balance the strength and toughness. However, the difficulty of inserting nanoscaled metal layers restricts their practical application. In this study, laminated carbon nanotubes (CNTs) reinforced Cu composites with microscaled metal layered were fabricated by a feasible method and exhibited simultaneously enhanced strength and toughness. CNTs were deposited on Cu foils by electrophoretic deposition with two-dimensional homogeneous dispersion. Insertion of CNTs induced the laminated Cu composite with repeated layer spacing of ∼20 μm through hot pressing and hot rolling. Simultaneously enhanced yield strength (183 MPa) and elongation (30.9%) were obtained with only 0.067 vol% CNTs. The strength improvement reached far beyond the mixture rule in metal matrix composites (MMCs) with homogeneous CNTs dispersion. CNTs and the induced interfaces serve as effective dislocations motion barriers and strengthen the composite. Laminated composite exhibited more stable deformation due to suppressed strain location by the layered structure. This work highlights the strengthening and toughening effects of laminated structure induced by CNTs, and provides a feasible method to build the laminated MMCs with adjustable metal layer thickness and CNTs amount, thus breaking the dimensional limit of metal layers in the design of laminated MMCs with enhanced mechanical properties.
Keywords	carbon ; carbon nanotubes ; composite materials ; copper ; deformation ; electrophoresis ; mechanical properties ; pressing
Language	English
Dates of publication	2018-04
Size	p. 222-232.
Publishing place	Elsevier Ltd
Document type	Article
ISSN	0008-6223
DOI	10.1016/j.carbon.2018.01.006
Database	NAL-Catalogue (AGRICOLA)

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Article: Achieving ultra-high strengthening and toughening efficiency in carbon nanotubes/magnesium composites via constructing micro-nano layered structure

Xiang, Yeyang / Wang, Xiaojun / Hu, Xiaoshi / Meng, Linglong / Song, Zhengxiang / Li, Xuejian / Sun, Zhenming / Zhang, Qiang / Wu, Kun

Composites. 2019 Apr., v. 119

2019

Abstract: Magnesium (Mg) is the lightest metal structural material but exhibits low toughness. By imitating the structure of nacre, constructing micro-nano layered structure is an effective way to balance strength and toughness. The micro-nano layered structure is ...

Abstract	Magnesium (Mg) is the lightest metal structural material but exhibits low toughness. By imitating the structure of nacre, constructing micro-nano layered structure is an effective way to balance strength and toughness. The micro-nano layered structure is constructed by electrophoretic depositing carbon nanotubes (CNTs) on Mg foils. The CNTs layers embedded into 50 μm Mg foils exhibit a strengthening efficiency of 500 while increasing the toughness of the composites. Experiments and theoretical calculation results reveal that the high back stress induced by CNTs layers is an important strengthening mechanism. The significantly improved toughness derives from the increase in energy required for crack propagation and high Schmid factor for the basal slip system {0 0 0 1} 〈1 1 2 ̄ 0〉. This work provides a feasible and universal way for conductive matrix, such as aluminum, titanium, copper and even conductive polymers to construct micro-nano layered structure to break through the mismatch between strength and toughness.
Keywords	aluminum ; carbon nanotubes ; composite materials ; copper ; electrophoresis ; energy ; magnesium ; nacre ; polymers ; titanium
Language	English
Dates of publication	2019-04
Size	p. 225-234.
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	2012223-8
ISSN	1359-835X
ISSN	1359-835X
DOI	10.1016/j.compositesa.2019.02.006
Database	NAL-Catalogue (AGRICOLA)

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Article: The Economic-Environmental Impacts of China’s Action Plan for Soil Pollution Control

Li, Zhitao / Huang, Guoxin / Li, Jia / Liu, Ruiping / Meng, Linglong / Song, Zhixiao / Wang, Xiahui / Zhang, Wei

Sustainability. 2019 Apr. 17, v. 11, no. 8

2019

Abstract: To effectively control soil pollution, an action plan (called Soil Plan) was carried out by Chinese government in 2016, which may cost CNY 1.14 trillion during the 2016–2020 period. To evaluate the potential impacts of this action plan on the national ... ...

Abstract	To effectively control soil pollution, an action plan (called Soil Plan) was carried out by Chinese government in 2016, which may cost CNY 1.14 trillion during the 2016–2020 period. To evaluate the potential impacts of this action plan on the national economy and environmental control, this study employed a closed macro input-output model to quantitatively account for the economic and environmental impacts from the view of the whole domestic supply chain. Our results show that the implementation of the Soil Plan may stimulate economic development and bring more jobs. It will help generate a gross domestic product (GDP) of CNY 2.72 trillion, with CNY 358.11 billion (15%) made from direct contributions, and CNY 2.36 trillion (85%) from indirect contributions. Meanwhile, the scheme could also produce 2 million jobs within five years, of which 580,000 (29%) are a direct contribution, and 1.42 million (71%) are an indirect contribution. On the other hands, increased demands for products and services of various sectors (such as power/heat production and supply, and chemical products) would also cause more air and water pollutants along with domestic supply chains. The emissions of sulfur dioxide(SO<inf>2</inf>), nitrogen oxide(NO<inf>x</inf>), chemical oxygen demand (COD) and ammonia nitrogen(NH<inf>3</inf>-N) would increase by a total of 5.20 × 105 t, 5.27 × 105 t, 1.62 × 105 t and 9.36 × 103 t, respectively. Our results may raise the concern about the indirect impacts of an environmental policy for the policy maker from both economic and environmental perspectives.
Keywords	air ; ammonium nitrogen ; chemical oxygen demand ; economic development ; emissions ; employment ; environmental impact ; environmental policy ; gross domestic product ; heat production ; models ; nitrogen oxides ; pollutants ; pollution control ; soil ; soil pollution ; sulfur dioxide ; supply chain ; China
Language	English
Dates of publication	2019-0417
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article
ZDB-ID	2518383-7
ISSN	2071-1050
ISSN	2071-1050
DOI	10.3390/su11082322
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: A Survey of Soil Enzyme Activities along Major Roads in Beijing: The Implications for Traffic Corridor Green Space Management.

Li, Tianxin / Meng, Linglong / Herman, Uwizeyimana / Lu, Zhongming / Crittenden, John

International journal of environmental research and public health

2015 Volume 12, Issue 10, Page(s) 12475–12488

Abstract: Soil quality is critical to the management of urban green space, in particular, along traffic corridors where traffic-related air pollution is significant. Soil quality can be evaluated by soil enzyme activities, which show quick responses to both ... ...

Abstract	Soil quality is critical to the management of urban green space, in particular, along traffic corridors where traffic-related air pollution is significant. Soil quality can be evaluated by soil enzyme activities, which show quick responses to both natural and anthropogenic disturbances. In this study, we investigated three soil enzyme activities (i.e., dehydrogenase, catalase and urease) along the major roads in urban areas of Beijing. Results show the activities of dehydrogenase, catalase and urease in urban samples were 58.8%, 68.2% and 48.5% less than the rural sample, respectively. The content of fluorescent amino acids as indicators of microbial activities was also consistently lower in urban samples than the rural. We observed two times greater exposure of particulate material along the roadsides in urban areas than rural areas. Although traffic air pollutants provide some nutrient sources to stimulate the URE activity, the exposure to traffic-related air pollution leads to the substantial decrease in enzyme activities. There were significant negative correlations for exposure to PM10 with DHA (r = -0.8267, p = 0.0017) and CAT (r = -0.89, p = 0.0002) activities. For the urban soils URE activity increased with the increasing of PM. We conclude that the degraded soil quality can negatively affect the target of developing plants and green spaces along the traffic corridors to mitigate the traffic impact. This study suggests the investigation of integrated strategies to restore the soil quality, reinforce the ecological service functions of green spaces along the traffic corridors and reduce the traffic pollutants.
MeSH term(s)	Bacterial Proteins/metabolism ; Beijing ; Catalase/metabolism ; Models, Theoretical ; Oxidoreductases/metabolism ; Soil/chemistry ; Soil Pollutants/analysis ; Urease/metabolism ; Vehicle Emissions/analysis
Chemical Substances	Bacterial Proteins ; Soil ; Soil Pollutants ; Vehicle Emissions ; Oxidoreductases (EC 1.-) ; Catalase (EC 1.11.1.6) ; Urease (EC 3.5.1.5)
Language	English
Publishing date	2015-10-08
Publishing country	Switzerland
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ISSN	1660-4601
ISSN (online)	1660-4601
DOI	10.3390/ijerph121012475
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Evaluation of groundwater pollution in a mining area using analytical solution: a case study of the Yimin open-pit mine in China.

Li, Tianxin / Li, Li / Song, Hongqing / Meng, Linglong / Zhang, Shuli / Huang, Gang

SpringerPlus

2016 Volume 5, Page(s) 392

Abstract: Introduction: This study focused on using analytical and numerical models to develop and manage groundwater resources, and predict the effects of management measurements in the groundwater system. Movement of contaminants can be studied based on ... ...

Abstract	Introduction: This study focused on using analytical and numerical models to develop and manage groundwater resources, and predict the effects of management measurements in the groundwater system. Movement of contaminants can be studied based on groundwater flow characteristics. This study can be used for prediction of ion concentration and evaluation of groundwater pollution as the theoretical basis. Case description: The Yimin open-pit mine is located in the northern part of the Inner Mongolia Autonomous Region of China. High concentrations of iron and manganese are observed in Yimin open-pit mine because of exploitation and pumping that have increased the concentration of the ions in groundwater. In this study, iron was considered as an index of contamination, and the solute model was calibrated using concentration observations from 14 wells in 2014. Discussion and evaluation: The groundwater flow model and analytical solutions were used in this study to forecast pollution concentration and variation trend after calibration. With continuous pumping, contaminants will migrate, and become enriched, towards the wellhead in the flow direction. The concentration of the contaminants and the range of pollution increase with the flow rate increased. Conclusions: The suitable flow rate of single well should be <380 m/day at Yimin open-pit for the standard value of pollution concentration.
Language	English
Publishing date	2016-03-31
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2661116-8
ISSN	2193-1801
ISSN	2193-1801
DOI	10.1186/s40064-016-2023-x
Database	MEDical Literature Analysis and Retrieval System OnLINE

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