Recent advances in the histochemical staining of heavy metals by means of chelating agents, with special reference to cadmium

2002 ◽  
Vol 56 (5) ◽  
pp. 332-340 ◽  
Author(s):  
Y. Sumi ◽  
T. Suzuki
Keyword(s):  
Heavy Metals ◽  
Special Reference ◽  
Chelating Agents ◽  
Histochemical Staining ◽  
Recent Advances

Recent advances in the application of noble metal nanoparticles in colorimetric sensors for lead ions

2021 ◽  
Author(s):  
H Singh ◽  
Amy Bamrah ◽  
Sanjeev Kumar ◽  
A Deep ◽  
M Khatri ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Chemical Properties ◽  
Lead Ions ◽  
Noble Metal Nanoparticles ◽  
Physical Chemical ◽  
Recent Advances ◽  
Recent Developments ◽  
Colorimetric Sensors

Recent developments in nanotechnology and engineering have produced a plethora of nanomaterials with amazing physical/chemical properties and enhanced sensing potential for various heavy metals in the environment. Noble metal nanoparticles...

Effect of biodegradable chelating agents on heavy metals phytoextraction with Mirabilis jalapa and on its associated bacteria

2007 ◽  
Vol 43 (4) ◽  
pp. 200-206 ◽  
Author(s):  
Alessia Cao ◽  
Alessandra Carucci ◽  
Tiziana Lai ◽  
Paolo La Colla ◽  
Elena Tamburini
Keyword(s):  
Heavy Metals ◽  
Chelating Agents ◽  
Associated Bacteria ◽  
Mirabilis Jalapa

Effect of EDTA and EDDS on Phytoremediation of Pb- and Zn- Contaminated Soil by Brassica Juncea

2012 ◽  
Vol 518-523 ◽  
pp. 5040-5046 ◽  
Author(s):  
Li Di Gao ◽  
Naoki Kano ◽  
Yuichi Sato ◽  
Shuang Zhang ◽  
Hiroshi Imaizumi
Keyword(s):  
Heavy Metals ◽  
Control System ◽  
Plant Growth ◽  
Brassica Juncea ◽  
Contaminated Soil ◽  
Chelating Agents ◽  
Environmental Control ◽  
Chelating Agent ◽  
Whole Plant ◽  
Biomass Loss

Effect of EDTA and EDDS on phytoremediation of Pb- and Zn- contaminated soil by Brassica Juncea was investigated in this work. Especially, the effect of the kind and the method of adding chelating agent was investigated during the plant growth. Plants were grown in an environmental control system. The biomass of the whole plant was weighed, and the uptake of Pb and Zn in shoot and root were determined using ICP-AES. Consequently, the following matters have been obtained: (1) Both EDTA and EDDS significantly enhanced the translocation of metals (Pb and Zn) in soil from root to shoot. Furthermore, the two chelating agents resulted in a sharply biomass loss for more than 30% of the control. As a result, the total uptake amount of metals by Brassica Juncea was decreased (except the uptake of Pb with the addition of 3.0 mmol•kg-1 EDTA). (2) EDDS showed the higher inhibition for the growth of Brassica Juncea than EDTA. (3) The method for adding EDTA and EDDS at several times separately did not necessarily increase the uptake of heavy metals.

Newer Approaches in Phytoremediation

2021 ◽  
pp. 1785-1808
Author(s):  
Khushboo Chaudhary ◽  
Suphiya Khan ◽  
Pankaj Kumar Saraswat
Keyword(s):  
Heavy Metals ◽  
Plant Growth ◽  
Chelating Agents ◽  
Plant Growth Promoting Bacteria ◽  
Metals Removal ◽  
Pollution Problem ◽  
The World ◽  
Plant Growth Promoting ◽  
Growth Promoting

The heavy metal pollution problem is all over the world. Plant-growth-promoting bacteria (PGPB) has transformed heavy metals present in the soil, which removes and minimizes their toxic effects. This chapter highlights the role of plant-growth-promoting bacteria, chelating agents, and nanoparticles for remediation of heavy metals; their mechanism of action; and their applications approach of hyperaccumulation. Therefore, this chapter focuses on the mechanisms by which microorganisms, chelating agents, and nanoparticles can mobilize or immobilize metals in soils and the nano-phytoremediation strategies are addressed for the improvement of phytoextraction as an innovative process for enhancement of heavy metals removal from soil.

scholarly journals Advances in heavy metal removal by sulfate-reducing bacteria

2020 ◽  
Vol 81 (9) ◽  
pp. 1797-1827 ◽  
Author(s):  
Ya-Nan Xu ◽  
Yinguang Chen
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Industrial Development ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Sulfate Reducing Bacteria ◽  
Sulfate Reducing ◽  
Recent Advances ◽  
Conventional Methods ◽  
Reducing Bacteria

Abstract Industrial development has led to generation of large volumes of wastewater containing heavy metals, which need to be removed before the wastewater is released into the environment. Chemical and electrochemical methods are traditionally applied to treat this type of wastewater. These conventional methods have several shortcomings, such as secondary pollution and cost. Bioprocesses are gradually gaining popularity because of their high selectivities, low costs, and reduced environmental pollution. Removal of heavy metals by sulfate-reducing bacteria (SRB) is an economical and effective alternative to conventional methods. The limitations of and advances in SRB activity have not been comprehensively reviewed. In this paper, recent advances from laboratory studies in heavy metal removal by SRB were reported. Firstly, the mechanism of heavy metal removal by SRB is introduced. Then, the factors affecting microbial activity and metal removal efficiency are elucidated and discussed in detail. In addition, recent advances in selection of an electron donor, enhancement of SRB activity, and improvement of SRB tolerance to heavy metals are reviewed. Furthermore, key points for future studies of the SRB process are proposed.

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