Hydrodynamic Behavior and the Effects of Water Pollution from Dalian’s Large-Scale Offshore Airport Island in Jinzhou Bay, China

2015 ◽  
Vol 141 (1) ◽  
pp. 05014003 ◽  
Author(s):  
Hua-Kun Yan ◽  
Nuo Wang ◽  
Tiao-Lan Yu ◽  
Nan-Qi Song
Keyword(s):  
Water Pollution ◽  
Large Scale ◽  
Hydrodynamic Behavior

Study and Application of Various Activated Carbons and Ash used in Water Purification Techniques: A Review

2020 ◽  
Vol 15 (3) ◽  
pp. 384-397
Author(s):  
Ajinkya Ravindra Telgote ◽  
Satish Sudhakarao Patil
Keyword(s):  
Water Pollution ◽  
Large Scale ◽  
Activated Carbons ◽  
Orange Peel ◽  
Cost Effective ◽  
Review Article ◽  
Banana Peel ◽  
Contaminated Water ◽  
Peanut Shell ◽  
Pomegranate Peel

Water pollution is increasing due to the different factors such as population growth, large-scale urbanization, deforestation, and unethical activities in the river or other sources of water. Various experts have been working in the field of the preparation ofactivated carbon from renewable energy including cost-effective technologies and products in an eco-friendly manner for various applications. This review article discusses methodologies utilized by various experts for the preparation of activated carbon for the abatement of water pollution. Biomasssuch ascoconut shell, Moringaoleifera seed, Peanut shell, Pomegranate peel, Rice husk, Lemon shell, Banana peel, and Orange Peel are found extremely helpful in the field of treatment of the contaminated water. The reviewed literature showed that the Biomass can be isolatespollutants from contaminated water through physical, mechanical, and biological techniques and removes various physicochemical pollutants such as pH, color, DO, turbidity, conductivity, turbidity, chloride, fluoride, TSS, TDS, BOD, COD, nitrate, phosphate, and heavy metal, etc. from contaminated water.

Polydopamine-Based Surface Modification of Chlorella Microspheres for Multiple Environmental Applications

2021 ◽  
Vol 21 (5) ◽  
pp. 3065-3071
Author(s):  
Sihao Pan ◽  
Guanhua Huang ◽  
Hui Ding ◽  
Ke Wang ◽  
Hong Wang
Keyword(s):  
Water Pollution ◽  
Heavy Metal ◽  
Surface Modification ◽  
Large Scale ◽  
Low Cost ◽  
Functional Materials ◽  
Scale Production ◽  
Oil Removal ◽  
Directional Motion ◽  
Enhanced Adsorption

Towards addressing water pollution issues, the development of multifunctional chlorella with applications ranging from sensing pollutants to heavy metal and oil removal is described. The use of chlorella cells, which are widely abundant natural structures, leads to simple and low-cost mass production of effective functional materials. Bioinspired surface modification approaches mediated by polydopamine can endow chlorella with enhanced adsorption capacity for heavy metals, as well as superhydrophobic, fluorescence and magnetic properties according to the desired application. The resulting chlorella exhibits excellent heavy metal and oil removal ability, while magnetic propulsion and guidance allow directional motion over long distances for implementation in situ removal. Moreover, it is further demonstrated that chlorella can be used as a biosensor to detect metal ions by taking advantage of the fluorescence properties of carbon dots. Such use of chlorella provides a new way for the large-scale production of functional materials to tackle water pollution.

scholarly journals Magnetohydrodynamic Simulation of the Evolution of Large-Scale Magnetic Fields in Disk Galaxies

1990 ◽  
Vol 140 ◽  
pp. 151-152
Author(s):  
Robert C. Bishop ◽  
Paul R. Shapiro ◽  
Daniel C. Barnes
Keyword(s):  
Magnetic Field ◽  
Numerical Simulation ◽  
Magnetic Fields ◽  
Large Scale ◽  
Disk Galaxies ◽  
Challenging Problem ◽  
Hydrodynamic Behavior ◽  
Subsequent Evolution ◽  
Initial Work ◽  
Magnetohydrodynamic Simulation

The amplification of a seed magnetic field by the hydrodynamic behavior of a disk galaxy is an important and challenging problem. We present our initial work on a numerical simulation of the amplification of such a field to large scales and its subsequent evolution. The computations will be carried out using a 3-D magnetohydrodynamic code.

Health risks from large-scale water pollution: Trends in Central Asia

2011 ◽  
Vol 37 (2) ◽  
pp. 435-442 ◽  
Author(s):  
Rebecka Törnqvist ◽  
Jerker Jarsjö ◽  
Bakhtiyor Karimov
Keyword(s):  
Water Pollution ◽  
Central Asia ◽  
Health Risks ◽  
Large Scale

scholarly journals Recent Advances on Plasmon-enhanced Titania Nanocatalysts for Photocatalytic Degradation of Organic Dyes

2020 ◽  
Vol 3 (3) ◽  
pp. 117
Author(s):  
Munawar Khalil ◽  
Rendy Muhamad Iqbal ◽  
Grandprix T.M. Kadja ◽  
Dede Djuhana
Keyword(s):  
Water Pollution ◽  
Photocatalytic Degradation ◽  
Industrial Wastewater ◽  
Large Scale ◽  
Recent Progress ◽  
Organic Dyes ◽  
Plasmonic Nanoparticles ◽  
The Past ◽  
Excellent Activity ◽  
Different Types

In the past several years, solar-driven photocatalytic degradation of organic dyes has been considered as one of the most promising and effective ways to address water pollution issues. Nevertheless, the implementation of such technology for large scale industrial wastewater application is still hampered by the limitation in currently used photocatalysts. Recently, plasmon-enhanced titania-based nanocatalyst has emerged as one of the promising photocatalytic materials for solar-driven wastewater treatment due to its excellent activity and ability to absorb a large portion of solar radiation. Therefore, this review highlights recent progress on applying such material for the photodegradation of organic dyes. In this review, the focus is placed on several mechanisms on how the surface plasmon resonance (SPR) phenomenon could enhance the photocatalytic activity of semiconductors, such as TiO2. Furthermore, the performance of several types of plasmon-enhanced titania nanocatalyst with different kinds of metal plasmonic nanoparticles, i.e., Au-TiO2, Ag-TiO2, and Pd-TiO2, is also compared and comprehensively discussed. Finally, a particular emphasis is also given to highlight the nanocatalysts' kinetics in facilitating the photocatalytic degradation of different types of organic dyes.

scholarly journals Airborne transmission pathway for coastal water pollution

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11358
Author(s):  
Matthew A. Pendergraft ◽  
Derek J. Grimes ◽  
Sarah N. Giddings ◽  
Falk Feddersen ◽  
Charlotte M. Beall ◽  
...  
Keyword(s):  
Public Health ◽  
Water Pollution ◽  
Coastal Water ◽  
Large Scale ◽  
Coastal Pollution ◽  
Airborne Transmission ◽  
Transport Pathways ◽  
Airborne Exposure ◽  
Scale Experiment ◽  
The Impact

Each year, over one hundred million people become ill and tens of thousands die from exposure to viruses and bacteria from sewage transported to the ocean by rivers, estuaries, stormwater, and other coastal discharges. Water activities and seafood consumption have been emphasized as the major exposure pathways to coastal water pollution. In contrast, relatively little is known about the potential for airborne exposure to pollutants and pathogens from contaminated seawater. The Cross Surfzone/Inner-shelf Dye Exchange (CSIDE) study was a large-scale experiment designed to investigate the transport pathways of water pollution along the coast by releasing dye into the surfzone in Imperial Beach, CA. Additionally, we leveraged this ocean-focused study to investigate potential airborne transmission of coastal water pollution by collecting complementary air samples along the coast and inland. Aerial measurements tracked sea surface dye concentrations along 5+ km of coast at 2 m × 2 m resolution. Dye was detected in the air over land for the first 2 days during two of the three dye releases, as far as 668 m inland and 720 m downwind of the ocean. These coordinated water/air measurements, comparing dye concentrations in the air and upwind source waters, provide insights into the factors that lead to the water-to-air transfer of pollutants. These findings show that coastal water pollution can reach people through an airborne pathway and this needs to be taken into account when assessing the full impact of coastal ocean pollution on public health. This study sets the stage for further studies to determine the details and importance of airborne exposure to sewage-based pathogens and toxins in order to fully assess the impact of coastal pollution on public health.

scholarly journals GIS and RS-Based Analysis of Water Pollution Potential Caused by Acid Mine Drainage in Samarinda, Indonesia

2021 ◽  
Vol SI (11) ◽  
pp. 5-13
Author(s):  
Tito Latif INDRA ◽  
Regina Putri AMALIA ◽  
Astrid DAMAYANTI
Keyword(s):  
Water Pollution ◽  
Acid Mine Drainage ◽  
Large Scale ◽  
Mine Drainage ◽  
High Potential ◽  
Water Bodies ◽  
Gis And Remote Sensing ◽  
Acid Mine ◽  
East Kalimantan ◽  
Void Distribution

Large-scale mining activity is the major environmental issue, including water pollution caused by Acid Mine Drainage (AMD). Samarinda, which is located in the province of East Kalimantan, Indonesia, has open pits and acid contributing land as a source of AMD pollutants. The potential AMD pollution can be assessed by utilizing Geographic Information System (GIS) and Remote Sensing (RS), which are considered reliable tools for measuring, mapping, monitoring, and model making for an area. The variables used in this research are void distribution, land cover, soil type, rainfall, topography, water body, and groundwater. The integration of these variables is used to analyze the potential of AMD pollution to water bodies by acid contributing land. Meanwhile, the void distribution and groundwater integration data are used to analyze the potential of AMD pollution to groundwater by voids. The overlay method is employed to analyze the potential spatial patterns of AMD pollution in the study area. The results show the high potential of AMD pollution to water bodies, specifically in the districts of Samarinda Utara, Palaran, and Sungai Kunjang. The high potential of AMD pollution to groundwater is found in the south delineation area, namely Palaran, Loa Janan Hilir, and Samarinda Seberang districts, with low and medium groundwater depth categories (20 - 70 and 50 - 150 MBGL). The spatial pattern of AMD pollution was random with the geometric arrangement of AMD pollution in the form of clusters.

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