Evaluation Concept and Testing Method for Heavy Metal Contaminant Transport in the Underground

2004 ◽  
pp. 117-124 ◽  
Author(s):  
Rafig Azzam ◽  
Mouad Lambarki
Keyword(s):  
Heavy Metal ◽  
Contaminant Transport ◽  
Testing Method ◽  
Metal Contaminant

Heavy metal contaminant remediation study of western Xiamen Bay sediment, China: Laboratory bench scale testing results

2009 ◽  
Vol 172 (1) ◽  
pp. 108-116 ◽  
Author(s):  
Luoping Zhang ◽  
Huan Feng ◽  
Xiaoxia Li ◽  
Xin Ye ◽  
Youhai Jing ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Xiamen Bay ◽  
Bench Scale ◽  
Laboratory Bench ◽  
Contaminant Remediation ◽  
Metal Contaminant

High Density Metal Contaminant Transport in Arid Region Ephemeral Channels

2015 ◽  
pp. 139-151
Author(s):  
Julianne J. Miller ◽  
David S. Shafer ◽  
Charalambos Papelis ◽  
Craig A. Refosco ◽  
Nathan A. Krzyaniak
Keyword(s):  
Contaminant Transport ◽  
Arid Region ◽  
High Density ◽  
Ephemeral Channels ◽  
Metal Contaminant

scholarly journals Impact of Climate Change on Metal and Suspended Sediment Concentrations in Urban Waters

2020 ◽  
Vol 8 ◽  
Author(s):  
Paul Frogner-Kockum ◽  
Gunnel Göransson ◽  
Marie Haeger-Eugensson
Keyword(s):  
Climate Change ◽  
Suspended Sediment ◽  
Contaminant Transport ◽  
Dry Period ◽  
Short Term ◽  
Impact Of Climate Change ◽  
Suspended Sediment Concentrations ◽  
River Loads ◽  
Metal Contaminant ◽  
The Impact

In order to study the impact of climate change on metal contaminant transport in urban waters and its relevance for water quality, we have analyzed variations in metal- and suspended sediment concentrations (SSC) in three urban rivers and one small creek in the Gothenburg region during various hydrological events such as spring flood, dry period, and wet period. To interpret river loads of metals and SSC we have furthermore followed meteorological trends since 1961 and additionally calculated future trends for the Gothenburg region, located on the west coast of Sweden. During periods of a short-term increase in precipitation we found an increased particle bound metal transport in urban watercourses of the Göta Älv River. In addition, a correlation between studied parameters indicates that surface runoff from brownfields most likely is the main source to the increased transport of pollutants in river systems rather than re-suspension of polluted river sediment.

Heavy metal contaminant in development process of artificial biological Soil Crusts in sand-land

2012 ◽  
Vol 32 (23) ◽  
pp. 7402-7410 ◽  
Author(s):  
徐杰 XU Jie ◽  
敖艳青 AO Yanqing ◽  
张璟霞 ZHANG Jingxia ◽  
姚一平 YAO Yiping ◽  
高天云 GAO Tianyun ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Development Process ◽  
Biological Soil Crusts ◽  
Soil Crusts ◽  
Sand Land ◽  
Metal Contaminant

A Model to Determine the Location of Heavy Metal Contaminant Source

2012 ◽  
Vol 610-613 ◽  
pp. 1023-1027 ◽  
Author(s):  
Zhi Jia Wang ◽  
Hu Wang ◽  
Hai Lang Gao ◽  
Peiai Zhang
Keyword(s):  
Heavy Metal ◽  
Diffusion Coefficients ◽  
High Accuracy ◽  
Spatial Distributions ◽  
Absorption Coefficients ◽  
Contaminant Source ◽  
Transmission Modes ◽  
Contaminant Sources ◽  
Metal Contaminant ◽  
Human Brains

We conducted a tracing model which was based on the process of dopamine diffusion in human brains, taking the diffusion coefficients and absorption coefficients into consideration. By combining with the spatial distributions of heavy metals plotted by ArcGIS, we can determine the contaminant sources and the results have high accuracy. Besides, we made an improvement in consideration of different transmission modes of heavy metal contaminants and the corresponding dilution factors.

scholarly journals Microbial and Heavy Metal Contaminant of Antidiabetic Herbal Preparations Formulated in Bangladesh

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Rausan Zamir ◽  
Anowar Hosen ◽  
M. Obayed Ullah ◽  
Nilufar Nahar
Keyword(s):  
Escherichia Coli ◽  
Heavy Metal ◽  
Pathogenic Bacteria ◽  
Microbial Contamination ◽  
Daily Intake ◽  
Total Coliform ◽  
Microbial Counts ◽  
Herbal Preparations ◽  
Metal Contaminant ◽  
Safety Limit

The aim of the current study was to evaluate microbial contamination in terms of microbial load (total aerobic count and total coliform count) and specific pathogenic bacteria (Salmonellaspp.,Escherichia coli,particularly Escherichia coli0157) in thirteen antidiabetic herbal preparations (ADHPs) from Dhaka City. All the thirteen ADHPs had been found contaminated with fungi and different pathogenic bacteria. From the data, it is found that only two of these preparations (ADHP-1 and ADHP-12) complied with the safety limit (as stated in different Pharmacopoeias and WHO guidelines) evaluated by all different microbial counts. None of these herbal preparations could assure the safety as all of them were contaminated by fungi. The overall safety regarding heavy metal content (Zn, Cu, Mn, Cr, Cd, and Pb) was assured as none of them exceeded the safety limit of the daily intake. Microbial contaminants in these herbal preparations pose a potential risk for human health and care should be taken in every step involved in the preparation of these herbal preparations to assure safety.

scholarly journals An Overview of Electrokinetic Remediation Assisted Phytoremediation to Remediate Barren Acidic Soil

2015 ◽  
Vol 773-774 ◽  
pp. 1476-1480
Author(s):  
Norashira Jamil ◽  
Aziman Madun ◽  
Saiful Azhar Ahmad Tajudin ◽  
Zaidi Embong
Keyword(s):  
Heavy Metal ◽  
Ph Value ◽  
Soft Soil ◽  
Soil Surface ◽  
Electrokinetic Remediation ◽  
Acidic Soil ◽  
Attractive Alternative ◽  
Surface Erosion ◽  
Ion Migration ◽  
Metal Contaminant

Electrokinetic has proven to be alternative technique to remediate pollution and increase soil strength for soft soil. This remediation method has been applied to remediate the hydrocarbon and heavy metal contaminant. Phytoremediation is a technique used to remediate the hydrocarbon and heavy metal contaminant. Both of this remediation technique has been proven as attractive alternative to clean up polluted soils. Although barren acidic soil is not categories as hazardous, the necessity of covered soil surface is on demand in order to minimize the surface erosion. Other than that, this remediation technology also helps in horticulture in order to enlarge the plantation and farming area. This paper will explain the formation of barren acidic soil, principles electrokinetic remediation for remediation of barren acidic soil and application of phytoremediation in order to sustain the process of remediation. Correlation of both remediation methods will minimize the acidic ion migration and sustain the pH value on soil surface for grass, vegetable or palm oil plantation.

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