Effective Removal of Heavy Metals From Aqueous Solution by Nano-Composites

2018 ◽  
pp. 249-258 ◽  
Author(s):  
Ashok K. Rathoure ◽  
J. Anuradha ◽  
R. Sanjeevi ◽  
Dushyant Singh Chauhan ◽  
Sandeep Tripathi
Keyword(s):  
Heavy Metals ◽  
Magnetite Nanoparticles ◽  
Heavy Metal Contamination ◽  
Industrial Effluents ◽  
Nano Composites ◽  
Air Oxidation ◽  
Metals Removal ◽  
Removal Of Heavy Metals ◽  
Effects Of Ph ◽  
Living Organisms

Heavy metal contamination in industrial effluents presents a serious threat to the environment and human health because of their toxicity, non-biodegradability, carcinogenicity, and bioaccumulation in living organisms. Recently, the preparation and application of iron oxides, especially magnetite nanoparticles, for metals removal have been investigated due to their nano size, magnetic separation, and the ease of synthesis, coating, and modification. However, magnetic nanoparticles lose some magnetization due to air oxidation. Magnetite nanoparticles coating with inorganic shell, like silica and carbon, have been reported and were capable of improving chemical stability. The effects of pH, contact time, and initial concentrations on the removal of heavy metals should be studied using nano-composites in water. In this chapter, the authors present a technical review on different nano-composites used for bioremediation and their limitations.

scholarly journals Impact of industrial effluents on ground water and soil quality in the vicinity of industrial area of Panipat city, India

2013 ◽  
Vol 5 (1) ◽  
pp. 132-136 ◽  
Author(s):  
Pawan K. Bharti ◽  
Pawan Kumar ◽  
Vijender Singh
Keyword(s):  
Heavy Metals ◽  
Ground Water ◽  
Soil Quality ◽  
Agricultural Soil ◽  
Heavy Metal Contamination ◽  
Industrial Effluents ◽  
Industrial Area ◽  
Soil System ◽  
Transfer Factors ◽  
Agricultural Plant

The present paper is aimed towards the assessment of heavy metal contamination of agricultural soil due to irrigation with contaminated ground water affected by textile industrial effluents at Panipat city in India. Samples of ground water and irrigated soils from textile industrial area were analyzed for various heavy metals, viz. Mn, Ni, Fe, Cu, Cd, Pb and Zn, using Atomic Absorption Spectrophotometry. Metal transfer factors from ground water to irrigated agricultural soil and from soil to ground water were calculated for heavy metals. The findings deal with the distribution of heavy metals in ground water of industrial area and irrigated agricultural soil. Transfer factors for heavy metals from effluent to ground water were observed to be 0.436, 1.180, 6.461, 2.401, 2.790, 3.178 and 0.634 for Cd, Cu, Fe, Mn, Ni, Pb and Zn respectively. These were found to be very high from ground water to agriculture soil due to the natural shale value of heavy metals in soil system. Thus, untreated industrial effluents can cause an environmental threat to ground water resources and affects soil quality and agricultural plant productivity.

scholarly journals Biomonitoring of Heavy Metal Pollution Using Acanthocephalans Parasite in Ecosystem: An Updated Overview

Animals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 811 ◽  
Author(s):  
El-Sayed E. Mehana ◽  
Asmaa F. Khafaga ◽  
Samar S. Elblehi ◽  
Mohamed E. Abd El-Hack ◽  
Mohammed A.E. Naiel ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Industrial Revolution ◽  
Heavy Metal Contamination ◽  
Developmental Stages ◽  
Heavy Metal Accumulation ◽  
Natural Ecosystem ◽  
Parasitic Infestation ◽  
Living Organisms ◽  
Life On Earth

As a result of the global industrial revolution, contamination of the ecosystem by heavy metals has given rise to one of the most important ecological and organismic problems, particularly human, early developmental stages of fish and animal life. The bioaccumulation of heavy metals in fish tissues can be influenced by several factors, including metal concentration, exposure time, method of metal ingestion and environmental conditions, such as water temperature. Upon recognizing the danger of contamination from heavy metals and the effects on the ecosystem that support life on earth, new ways of monitoring and controlling this pollution, besides the practical ones, had to be found. Diverse living organisms, such as insects, fish, planktons, livestock and bacteria can be used as bioindicators for monitoring the health of the natural ecosystem of the environment. Parasites have attracted intense interest from parasitic ecologists, because of the variety of different ways in which they respond to human activity contamination as prospective indices of environmental quality. Previous studies showed that fish intestinal helminths might consider potential bioindicators for heavy metal contamination in aquatic creatures. In particular, cestodes and acanthocephalans have an increased capacity to accumulate heavy metals, where, for example, metal concentrations in acanthocephalans were several thousand times higher than in host tissues. On the other hand, parasitic infestation in fish could induce significant damage to the physiologic and biochemical processes inside the fish body. It may encourage serious impairment to the physiologic and general health status of fish. Thus, this review aimed to highlight the role of heavy metal accumulation, fish histopathological signs and parasitic infestation in monitoring the ecosystem pollutions and their relationship with each other.

scholarly journals Scenario of heavy metal contamination in agricultural soil and its management

2009 ◽  
Vol 1 (1) ◽  
pp. 99-108 ◽  
Author(s):  
A. K. Chopra ◽  
Chakresh Pathak ◽  
G. Prasad
Keyword(s):  
Heavy Metals ◽  
Heavy Metal Contamination ◽  
Complex Structure ◽  
Specific Area ◽  
Genetically Engineered ◽  
Natural Phenomenon ◽  
Mineral Matter ◽  
Rural And Urban ◽  
Precise Knowledge ◽  
Living Organisms

Soil is a complex structure and contains mainly five major components i.e. mineral matter, water, air, organic matter and living organisms. The quantity of these components in the soil does not remain the same but varies with the locality. Soil possesses not only a nucleus position for existence of living being but also ensures their future existence. Therefore, it is essential to make an adequate land management to maintain the quality of soil in both rural and urban soil. The presence of different kinds of heavy metals such as Cd, Cu, Mn, Bi and Zn etc. in trace or in minimum level is a natural phenomenon but their enhanced level is an indicator of the degree of pollution load in that specific area. The precise knowledge of these kinds of heavy metals, their forms and their dependence on soil provides a genuine base for soil management. The heavy metals have potent cumulative properties and toxicity due to which they have a potential hazardous effect not only on crop plants but also on human health. The metal contaminants can be reduced by immobilization of contaminants using macrophytes and also by using genetically engineered microorganisms.

Application of Functionalized Nanomaterials as Effective Adsorbents for the Removal of Heavy Metals from Wastewater: A Review

2020 ◽  
Vol 17 (1) ◽  
pp. 4-22
Author(s):  
Saifeldin M. Siddeeg ◽  
Mohamed A. Tahoon ◽  
Norah S. Alsaiari ◽  
Muhamad Shabbir ◽  
Faouzi B. Rebah
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Graphene Oxide ◽  
Engineered Nanomaterials ◽  
Complete Analysis ◽  
Toxic Heavy Metals ◽  
Metals Removal ◽  
Functionalized Nanomaterials ◽  
Metal Selectivity ◽  
Removal Of Heavy Metals

Background: Nanomaterials offer promising remediation techniques for water containing toxic pollutants especially heavy metals. Method: A complete analysis of the application of nano-adsorbents for heavy metals removal from water has been reviewed. The effect of their functionalization on the adsorption capacity, the reusability, and the surface area has also been discussed. Result: In particular, the focus was on the applications of graphene oxide, carbon, silica, titanium dioxide, and iron oxide for water treatment. Additionally, the effect of functional groups on heavy metal selectivity has been discussed as well. Conclusion: This article will provide environmental engineers and academicians with information related to the latest engineered nanomaterials employed for the treatment of wastewater containing toxic heavy metals.

Microbial stress response to heavy metals in the environment

RSC Advances ◽  
2016 ◽  
Vol 6 (111) ◽  
pp. 109862-109877 ◽  
Author(s):  
Pranesha Prabhakaran ◽  
Muhammad Aqeel Ashraf ◽  
Wan Syaidatul Aqma
Keyword(s):  
Public Health ◽  
Heavy Metals ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Threshold Level ◽  
Environmental Issue ◽  
Global Environmental Issue ◽  
Global Environmental ◽  
Living Organisms ◽  
Microbial Stress

Heavy metal contamination is a global environmental issue as it poses a significant threat to public health, and exposure to metals above a certain threshold level can cause deleterious effects in all living organisms including microbes.

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