Microplastics Aggregation, Deposition, and Enhancement of Contaminants Transport

2020 ◽  
pp. 1-12
Author(s):  
D. P. Korfiatis
Keyword(s):  
Contaminants Transport

Feasibility of Using Magnetic Properties for Assessment of Particle-Associated Contaminated Transport

1996 ◽  
Vol 31 (4) ◽  
pp. 741-752 ◽  
Author(s):  
T. Mayer ◽  
W.A. Morris ◽  
K.J. Versteeg
Keyword(s):  
Heavy Metal ◽  
Bottom Sediments ◽  
Magnetic Measurements ◽  
Analytical Techniques ◽  
Suspended Sediments ◽  
Hamilton Harbour ◽  
Data Comparison ◽  
Depositional Processes ◽  
Magnetic Signature ◽  
Contaminants Transport

Abstract The desire to develop rapid tools for monitoring particle-associated contaminants transport in Hamilton Harbour has led the search for fast and inexpensive tests that could be used as screening procedures prior to labour- and time-intensive conventional analytical techniques. Magnetic property measurements promised to be a viable technique if it can be shown that there is a relation between this property and contaminant concentrations in suspended and bottom sediments. Correlation between magnetic susceptibility and heavy metal concentrations in suspended and bottom sediments from Hamilton Harbour is investigated. Analyses of results from six stations and two core samples indicate that magnetic measurements provide a meaningful proxy for heavy metal analyses, and that post-depositional processes produce only very limited changes in either the magnetic and/or chemical data. Comparison of the magnetic signature and chemistry of the suspended sediments suggests that susceptibility can be used to rapidly map plume patterns in the water column.

Lake Kinneret watershed contamination transports - a GIS based hydrological model

2003 ◽  
Vol 48 (10) ◽  
pp. 63-70 ◽  
Author(s):  
A. Ostfeld ◽  
A. Pries
Keyword(s):  
Hydrological Model ◽  
Lake Kinneret ◽  
Water Quantity ◽  
Rainfall Runoff ◽  
Input Output ◽  
Runoff Water ◽  
Gis Database ◽  
Proposed Model ◽  
Physical Response ◽  
Contaminants Transport

This paper describes the efforts and current achievements of developing a GIS based hydrological model for flow and contaminants transport within Lake Kinneret watershed. The proposed model is built of hydrological “input-output” physical response blocks for routing rainfall-runoff water quantity and quality in sub-watersheds, coupled further with a delineated GIS database. An illustrative example of the model capabilities is demonstrated.

Risk Assessment for Petroleum Contamination Exposure in Groundwater

2012 ◽  
Vol 518-523 ◽  
pp. 987-990
Author(s):  
Jing Shen ◽  
Guo He Huang ◽  
Qi Yang ◽  
Chao Li ◽  
Bin Shi ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Human Health ◽  
Human Health Risk ◽  
Petroleum Contamination ◽  
Fuzzy Simulation ◽  
Groundwater System ◽  
Transport Simulation ◽  
Assessment Approach ◽  
Contaminants Transport ◽  
Beijing China

This paper presents a human health risk assessment approach based on fuzzy transport simulation (HHRA-FTS) to create the response relationships between contaminants transport and human health. Compared to the conventional methods, HHRA-FTS employs the fuzzy transport simulation to model the concentration and fate of contaminants, and takes into account different exposure pathways of pollutions in risk assessment. It has the advantage of avoiding miscalculation of results in terms of giving an interval values for the concentration of contamination by the fuzzy simulation. The HHRA-FTS approach is applied to a real-world PH-contaminated groundwater system in Pinggu County, located in northwest of Beijing, China, for demonstration studies.

Review of the Role of Analytical Modelling Methods in Riverbank Filtration System

2014 ◽  
Vol 71 (1) ◽  
Author(s):  
Shaymaa Mustafa ◽  
Arifah Bahar ◽  
Zainal Abdul Aziz ◽  
Saim Suratman
Keyword(s):  
Point Of View ◽  
Analytical Modelling ◽  
Analytical Models ◽  
Riverbank Filtration ◽  
Stream Depletion ◽  
Filtration System ◽  
Depletion Rate ◽  
Contaminants Transport ◽  
Modelling Methods

Riverbank filtration (RBF) technology is applied in several countries around the world as one of the main sources of drinking water supply both from quantitative and qualitative point of view. Consequently, several analytical modelling methods, mostly based on the transformation techniques, are developed in literature to describe different processes which occur in RBF system. An extensive overview of these analytical methods, their uses and limitations are discussed. The review disclosed that most analytical models usually are concerned in evaluating stream depletion rate rather than contaminants transport especially the transportation of pesticides and pathogens. Laplace and Fourier methods are more popular methods used by researchers to solve the system of partial differential equation that developed to simulate the RBF problem.

The Alaskan Outer Continental Shelf Environmental Assessment Program

1979 ◽  
Vol 6 (3) ◽  
pp. 171-180 ◽  
Author(s):  
Rudolf J. Engelmann
Keyword(s):  
Continental Shelf ◽  
Environmental Assessment ◽  
Oil And Gas ◽  
Environmental Study ◽  
Outer Continental Shelf ◽  
Oil And Gas Development ◽  
Assessment Program ◽  
Oil And Gas Operations ◽  
Contaminants Transport ◽  
Environmental Prediction

The Outer Continental Shelf Environmental Assessment Program (OCSEAP) is a multidisciplinary environmental study that is designed to provide timely inputs which are needed for decisions on off-shore oil and gas development. Approximately 100 projects in the Program address six tasks that are universal to environmental prediction and assessment. These include determination of predevelopment contamination, anticipation of future contaminants, transport of contaminants through the environment to receptors, location and character of biological populations, and the effects on organisms of exposure to a contaminant. The sixth task identifies and characterizes the various physical hazards which the environment poses to human safety, installations, and oil and gas operations.

scholarly journals Simulation of Contaminants Transport in Groundwater From Nickel Mining Waste Dump Southeast Sulawesi

2022 ◽  
Author(s):  
Kadek Nando Setiawan ◽  
Tedy Agung Cahyadi ◽  
Nur Ali Amri ◽  
Rika Ernawati ◽  
Nurkhamim Nurkhamim ◽  
...  
Keyword(s):  
Mining Waste ◽  
Compacted Clay ◽  
Waste Dump ◽  
Contaminant Migration ◽  
The North ◽  
Waste Dumps ◽  
Nickel Mining ◽  
Contaminants Transport ◽  
Clay Layers ◽  
The Impact

Abstract The irregularities of nickel resource mining in Indonesia cause many serious environmental problems. Piles of leftover rocks on nickel mining waste dumps have the potential to be a source of heavy metal seepage into the water. This study was conducted to assess the impact of nickel mining in the Langgikima Subdistrict of the North Konawe Regency of Southeast Sulawesi Province. The focus is to assess the migration of hexavalent chromium (Cr6+) and iron (Fe) using MT3DMS to model the transport of solutes. The study's goal was to identify cr6+ and Fe concentrations in waste dumps and predict the spread of contaminants over a 20-year period of time. XRF (X-Ray Fluorescence) is done to determine the content of elements and minerals in rocks. Toxicity Characteristics Leaching Procedure (TCLP) is performed to estimate the concentration of Cr6+ and Fe in waste dumps. AAS (Atomic Absorption Spectrophotometer) to find out the content of Cr6+ and Fe in surface water and land water samples. The results showed the highest concentrations of Cr6+ of 0.0462 mg/L and Feat 0.8709 mg/L. Simulations without compacted clay coatings, Cr6+ and Fe contaminants could be transported consecutively by 2.7 km and 2.42 km while simulations used compacted clay layers with a hydraulic conductivity of 1 × 10−9 m/s of Cr6+ and Fe contaminants could be transported consecutively by 0.412 km and 0.467 km. It can therefore be concluded that heavy metals in the remaining rock piles from the waste dump can be transported into groundwater, and the action of using a compacted layer of clay must be taken to prevent contaminant migration into groundwater.

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