Discussion on the Sediment Internal Pollution and its Countermeasures of Nansi Lake

2013 ◽  
Vol 664 ◽  
pp. 288-292
Author(s):  
Long Feng Wang ◽  
Li Yuan Yang
Keyword(s):  
Heavy Metal ◽  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Storage Capacity ◽  
Nansi Lake ◽  
Metal Pollutants ◽  
High Storage Capacity ◽  
Heavy Metal Pollutants ◽  
High Storage ◽  
Internal Pollution

Sediment is an important ecological part of the lake and has a high storage capacity. Based on the cognition of Nansi Lake, this article presents the main sediment internal pollution in Nansi Lake, including nutrient pollutants, heavy metal pollutants and persistent organic pollutants, then make some countermeasures to control pollution, which has certain guidance to the improvement of environmental contamination in Nansi Lake.

scholarly journals Application of nanoscale zero-valent iron in hexavalent chromium-contaminated soil: A review

2020 ◽  
Vol 9 (1) ◽  
pp. 736-750
Author(s):  
Xilu Chen ◽  
Xiaomin Li ◽  
Dandan Xu ◽  
Weichun Yang ◽  
Shaoyuan Bai
Keyword(s):  
Heavy Metal ◽  
Hexavalent Chromium ◽  
Contaminated Soil ◽  
Zero Valent Iron ◽  
Toxic Heavy Metal ◽  
Factors Affecting ◽  
Metal Pollutants ◽  
Nanoscale Zero Valent Iron ◽  
Low Toxicity ◽  
Heavy Metal Pollutants

AbstractChromium (Cr) is a common toxic heavy metal that is widely used in all kinds of industries, causing a series of environmental problems. Nanoscale zero- valent iron (nZVI) is considered to be an ideal remediation material for contaminated soil, especially for heavy metal pollutants. As a material of low toxicity and good activity, nZVI has been widely applied in the in situ remediation of soil hexavalent chromium (Cr(vi)) with mobility and toxicity in recent years. In this paper, some current technologies for the preparation of nZVI are summarized and the remediation mechanism of Cr(vi)-contaminated soil is proposed. Five classified modified nZVI materials are introduced and their remediation processes in Cr(vi)-contaminated soil are summarized. Key factors affecting the remediation of Cr(vi)-contaminated soil by nZVI are studied. Interaction mechanisms between nZVI-based materials and Cr(vi) are explored. This study provides a comprehensive review of the nZVI materials for the remediation of Cr(vi)-contaminated soil, which is conducive to reducing soil pollution.

A high-storage capacity content-addressable memory and its learning algorithm

1989 ◽  
Vol 36 (5) ◽  
pp. 762-766 ◽  
Author(s):  
M. Verleysen ◽  
B. Sirletti ◽  
A. Vandemeulebroecke ◽  
P.G.A. Jespers
Keyword(s):  
Storage Capacity ◽  
Learning Algorithm ◽  
Content Addressable Memory ◽  
High Storage Capacity ◽  
High Storage

Highly sensitive detection of Cr(vi) in groundwater by bimetallic NiFe nanoparticles

2017 ◽  
Vol 9 (6) ◽  
pp. 1031-1037 ◽  
Author(s):  
Jingtao Liu ◽  
Yu Ding ◽  
Lifei Ji ◽  
Xin Zhang ◽  
Fengchun Yang ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Hexavalent Chromium ◽  
Low Cost ◽  
High Sensitivity ◽  
Sensitive Detection ◽  
Toxic Heavy Metal ◽  
Metal Pollutants ◽  
Highly Sensitive ◽  
Highly Sensitive Detection ◽  
Heavy Metal Pollutants

Hexavalent chromium (Cr(vi)) is one of the most toxic heavy metal pollutants in groundwater, and thus the detection of Cr(vi) with high sensitivity, accuracy, and simplicity and low cost is of great importance.

scholarly journals Asymmetric pathways in the electrochemical conversion reaction of NiO as battery electrode with high storage capacity

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Ulrike Boesenberg ◽  
Matthew A. Marcus ◽  
Alpesh K. Shukla ◽  
Tanghong Yi ◽  
Eamon McDermott ◽  
...  
Keyword(s):  
Storage Capacity ◽  
Conversion Reaction ◽  
Electrochemical Conversion ◽  
High Storage Capacity ◽  
Battery Electrode ◽  
High Storage

A stable zinc-4-carboxypyrazole framework with high uptake and selectivity of light hydrocarbons

2015 ◽  
Vol 44 (6) ◽  
pp. 2893-2896 ◽  
Author(s):  
Hong-Ru Fu ◽  
Fei Wang ◽  
Jian Zhang
Keyword(s):  
Chemical Stability ◽  
Storage Capacity ◽  
Metal Organic Framework ◽  
High Uptake ◽  
Light Hydrocarbons ◽  
High Storage Capacity ◽  
Metal Organic ◽  
High Storage ◽  
Organic Framework

A metal–organic framework based on 4-carboxypyrazole ligands has been synthesized, and it shows unusual chemical stability and high storage capacity for C2 light hydrocarbons.

scholarly journals The Effect of Heavy Metal Pollutants on Bioluminescence Intensity of Luminous Mushrooms (Nenothopanus sp)

2020 ◽  
Vol 21 (2) ◽  
pp. 98-109
Author(s):  
Witriani Marvinatur Ihsan ◽  
Ratnawulan Ratnawulan
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Heavy Metal Concentration ◽  
Maximum Intensity ◽  
Coastal Forest ◽  
Metal Pollutants ◽  
Heavy Metal Concentrations ◽  
Measurement Results ◽  
West Sumatra ◽  
Heavy Metal Pollutants

In the South Coastal Forest area, West Sumatra, a luminous mushroom with the species Neonothopanus Sp. This research was conducted with the aim of seeing the effect of heavy metals on the bioluminescence reaction of luminous mushrooms. Starting from the effect of heavy metal concentrations on the intensity and inhibition coefficient of luminous mushroom biolumination. From the measurement results, the maximum intensity value of luminous mushrooms is 499.6 au occurring at a wavelength of 505 nm. At a wavelength of 505 nm, visible light is produced in green. The results obtained are in accordance with observations, because the light emitted by the glowing mushroom is green. If the concentration of heavy metals is greater, the intensity of the bioluminescent fungus (Neonothopanus sp) will decrease. The type of heavy metal affects the intensity of the fungus biolumination. The greatest decrease in intensity occurred in copper (Cu) and iron (Fe), zinc (Zn) and lead (Pb). If the heavy metal concentration is greater, the inhibition coefficient will be smaller. The greatest inhibition coefficient due to the presence of heavy metals occurs in copper (Cu) then iron (Fe), zinc (Zn) and the smallest is lead (Pb).

A Fuzzy Cluster Algorithm of Heavy Metal City Topsoil Pollution

2013 ◽  
Vol 830 ◽  
pp. 341-344
Author(s):  
Jun Jun Du ◽  
Sheng Ping Jin ◽  
Qiong Li ◽  
She Sheng Zhang
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Fuzzy Clustering ◽  
Clustering Algorithm ◽  
Fuzzy Ahp ◽  
Science Research ◽  
Fuzzy Cluster ◽  
Metal Pollutants ◽  
Fuzzy Cluster Algorithm ◽  
Heavy Metal Pollutants

Consider heavy metal pollution of topsoil in the city of world today is a hot science research project. A fuzzy clustering algorithm l is constructed ed by analyzing the propagation characteristics of heavy metal pollutants. Considering topography, areas, factories, roads, , irredentist, etc. we calculate a evaluation on comprehensive pollution, and the degree of heavy metals pollution, by using fuzzy clustering and fuzzy AHP. The results show that the index of the comprehensive pollution of heavy metals on the region, and the weight of pollution of each category.

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