An Environmentally Friendly Method for Removing Hg(II), Pb(II), Cd(II) and Sn(II) Heavy Metals from Wastewater Using Novel Metal–Carbon-Based Composites

Rapid economic and industrial development and population growth have made water contamination a serious environmental problem and a major threat to public health worldwide. Heavy metals are extensively used in numerous industrial applications and are some of the most important environmental contaminants. The impacts of heavy metals on the health of humans, animals, and plants make their removal from wastewater and water resources an important and vital issue. In this study, a simple and environmentally friendly method is proposed for the synthesis of a ZnFe2O4-carbon nanotube (CNT) adsorbent material. SEM/EDX analysis and Fourier-transform infrared spectrophotometry (FTIR) are used to characterize the synthesized adsorbent material. We test the synthesized adsorbent material’s ability to recover four heavy metals (Hg(II), Pb(II), Cd(II) and Sn(II) ions) from an aqueous solution. We show that crushing fullerene CNTs with the ZnFe2O4 composite improves the adsorption properties of free fullerene CNTs towards the investigated heavy metal ions by 25%.

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Selenium phytoremediation study of contaminated soils by Vetiveria zizanioides and Medicago sativa

Environment Conservation Journal ◽

10.36953/ecj.2015.se1650 ◽

2015 ◽

Vol 16 (SE) ◽

pp. 429-434

Author(s):

Samaneh Rasooli ◽

Mojtaba Yousefirad ◽

Lobat Taghavi

Keyword(s):

Heavy Metals ◽

Soil Contamination ◽

Medicago Sativa ◽

Contaminated Soils ◽

Environmentally Friendly ◽

Factorial Experiment ◽

Vetiveria Zizanioides ◽

Great Ability ◽

Aerial Parts ◽

Environmentally Friendly Method

With the growth of industry and the increasing consumption of chemicals, their entrance into water, soil and air results in the contamination of environment and consequently the danger that humans face, resulting from heavy metals, is felt more than ever before. Phytoremediation is an environmentally friendly method employing plants for removing pollutants from contaminated soils. The present study was carried out under greenhouse conditions using factorial experiment based on the randomized complete blocks design in three replications in order to analyze the phytoremediation ability of Vetiveria zizanioides and Medicago sativa in soils contaminated with selenium. Five-kilogram pots of Vetiveria zizanioides and Medicago sativa with 0, 10 and 20 mg/Kg selenium in the soil were treated. Sixty days after the treatments, the plants were harvested. The results showed that in both Vetiveria zizanioides and Medicago sativa the effect of selenium in all the studied traits was significant (P<0.01). In both plants, with an increase in the amount of selenium in the soil, the dry weights of the organs decreased and the concentration of selenium in different organs increased. At every level of soil contamination the concentration of selenium in the different organs of Vetiver were higher than alfalfa. Since the transfer and absorption factors in the root and aerial parts of Vetiver were greater than that of Medicago, Vetiver has great ability in absorption and transfer of selenium from soil to shoot in comparison with alfalfa and is a more suitable plant for phytoremediation.

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An Overview on Eco-Friendly Polymer Composites for Heavy Metal Ion Remediation

Current Analytical Chemistry ◽

10.2174/1573411016666200311105838 ◽

2020 ◽

Vol 16 ◽

Author(s):

Muhammad Shahid Nazir ◽

Bushra Anees Palvasha ◽

Zaman Tahir ◽

Sadaf ul Hassan ◽

Zulfiqar Ali ◽

...

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Polymer Composites ◽

Metal Ion ◽

Water Contamination ◽

Environmental Problem ◽

Cost Effective ◽

Review Article ◽

Human Beings ◽

Global Environmental

Background: Water contamination by noxious heavy metals due to urbanization is a global environmental problem. Heavy metal ions pollution make the water unsuitable for drinking and are also highly toxic to human beings and eco-system. Remediation of heavy metals is therefore very crucial. Method: Adsorbents based on biopolymer and eco-friendly polymer composites have been developed and fabricated to remediate and remove heavy metals from the ecosystem. Result: In recent years, biocomposites have been successful as cost effective adsorbents for the remediation of various contaminants with their eco-friendly nature and sustainability. Conclusion: This review article gives an overview on the remediation of heavy metals using green biocomposites.

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Dietary Exposure of Heavy Metals, Minerals and Trace Elements through Cereals Commonly Consumed by Dhaka City Residents

Current Nutrition & Food Science ◽

10.2174/1573401315666191113154200 ◽

2020 ◽

Vol 16 (5) ◽

pp. 815-823

Author(s):

Md. Bayejid Hosen ◽

Abu T.M. Abdullah ◽

Md. Z.H. Howlader ◽

Yearul Kabir

Keyword(s):

Heavy Metals ◽

Trace Elements ◽

Inductively Coupled Plasma ◽

Industrial Development ◽

Daily Intake ◽

Dietary Exposure ◽

Risk Level ◽

Dhaka City ◽

Main Meal ◽

Minerals And Trace Elements

Background: Contamination of soil and agricultural products by heavy metals resulting from rapid industrial development has caused major concern. Dietary exposure to heavy metals has been associated with toxic and adverse health effects. The main threats to human health from heavy metals are associated with exposure to Pb, Cd and Hg. The aim of this study was to monitor the presence of heavy metals, minerals and trace elements in cereals consumed by Dhaka city residents. Methods: One hundred and sixty cereal samples were collected for eight (08) composited samples and analyzed for the determination of sixteen elements. Heavy metals were analyzed by Inductively Coupled Plasma Mass Spectrometry (ICP-MS), and other elements were determined by Atomic Absorption Spectrometry (AAS). Results: The average concentrations of elements in cereals fall within the safe limit except for Pb, Cr, Na and Mg, which exceeded the safe limits. The daily intake of Cd (23.0 μg), Hg (63.0 μg) and As (13.6 μg) through cereals was below the risk level except for Pb (634.0 μg) and Cr (263.1 μg). The dietary intake of Na (1860.0 mg), Mg (347.0 mg) and Mn (4600.0 μg) exceeded the toxic level while K (829 mg) was below the RDA. Conclusion: As the main meal of average Bangladeshi people is boiled rice served with some vegetables, our findings indicate that the residents of Dhaka city are at risk from Pb and Cr contamination and their dietary need for some important minerals and trace elements is not fulfilled by cereals.

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Optimization of preparation parameters for environmentally friendly attapulgite functionalized by chitosan and its adsorption properties for Cd2+

Environmental Science and Pollution Research ◽

10.1007/s11356-021-13788-8 ◽

2021 ◽

Author(s):

Yue Teng ◽

Ziyang Jiang ◽

An Yu ◽

Hongyan Yu ◽

Zhenxing Huang ◽

...

Keyword(s):

Environmentally Friendly ◽

Adsorption Properties

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Investigation an environmentally friendly method under magnetic field as a green solvent for the synthesis of brookite phase nanoparticles at room temperature

Journal of Materials Science Materials in Electronics ◽

10.1007/s10854-021-05889-4 ◽

2021 ◽

Author(s):

Yahya Absalan ◽

Mostafa Gholizadeh ◽

Vladimir V. Kopylov ◽

Leonid A. Butusov ◽

Valiolah Bagherzadeh ◽

...

Keyword(s):

Magnetic Field ◽

Room Temperature ◽

Environmentally Friendly ◽

Green Solvent ◽

Environmentally Friendly Method ◽

Brookite Phase

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A simple and environmentally friendly method for the synthesis of N-phenylanthranilic acid derivatives

Journal of Chemical Research ◽

10.3184/030823406777411098 ◽

2006 ◽

Vol 2006 (5) ◽

pp. 342-344 ◽

Cited By ~ 6

Author(s):

Hanakere R. Girisha ◽

Gejjalagere R. Srinivasa ◽

D. Channe Gowda

Keyword(s):

Environmentally Friendly ◽

Environmentally Friendly Method

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Development and Achievements of SSM Processes for High Performance Components

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.256.319 ◽

2016 ◽

Vol 256 ◽

pp. 319-327 ◽

Cited By ~ 1

Author(s):

Mario Rosso ◽

Ildiko Peter ◽

Ivano Gattelli

Keyword(s):

Industrial Development ◽

High Performance ◽

Rear Axle ◽

Research Work ◽

Industrial Applications ◽

Alternative Methods ◽

Front Suspension ◽

Large Numbers ◽

Automotive Parts ◽

High Level

During the last decades under the enthusiastic and competent guidance of Mr Chiarmetta SSM processes attained in Italy at Stampal Spa (Torino) an unquestionable high level of industrial development with the production of large numbers of high performance automotive parts, like variety of suspension support, engine suspension mounts, steering knuckle, front suspension wheel, arm and rear axle. Among the most highlighted findings SSM processes demonstrated their capability to reduce the existing gap between casting and forging, moreover during such a processes there are the opportunity to better control the defect level.Purpose of this paper is to highlight the research work and the SSM industrial production attained and developed by Mr G.L. Chiarmetta, as well as to give an overview concerning some alternative methods for the production of enhanced performance light alloys components for critical industrial applications and to present an analysis of a new rheocasting process suitable for the manufacturing of high performance industrial components.

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