Soil washing of chromium- and cadmium-contaminated sludge using acids and ethylenediaminetetra acetic acid chelating agent

2011 ◽  
Vol 37 (1) ◽  
pp. 145-151 ◽  
Author(s):  
Saeid Gitipour ◽  
Soheil Ahmadi ◽  
Edris Madadian ◽  
Mojtaba Ardestani
Keyword(s):  
Acetic Acid ◽  
Soil Washing ◽  
Chelating Agent

scholarly journals Pengaruh Kitosan Terhadap Kadar Residu Pb Ginjal Tikus Putih (Rattus Sp.) Jantan Yang Dipapari Plumbum Asetat

2016 ◽  
Vol 2 (1) ◽  
Author(s):  
Ulina Catarina Jeni Simatupang
Keyword(s):  
Acetic Acid ◽  
Atomic Absorption ◽  
Lead Acetate ◽  
Kidney Tissue ◽  
Chelating Agent ◽  
Kidney Damage ◽  
Isolated Kidney

The  study aimed to determine the effect of chitosan on  the kidney of rats (Rattus sp.) exposed to lead acetate. Thirty five male animals weighing 250g were divided into 7 groups:  K group as a control (without treatment), P1  received  Pb (40 mg/kg bw as lead acetate),  while P2, P3, and P4, all received Pb (40 mg/kg bw) and chitosan (0,5%, 0,75%, and 1% respectively). P5 group received only chitosan (1%) and P6 group received acetic acid. After 7 weeks of  treatment, the animals were sacrificed and the kidneys were isolated. Kidney damage was observed with residue of Pb in kidney tissue was evaluated using Atomic Absorption Spectrophotography. Chitosan able to decrease kidney damage resulted from  Pb treatment. Residue of Pb in the  kidney of rat exposed to Pb acetate was decreased after chitosan treatment. In conclusion, chitosan has the ability to reduce residue of Pb after exposed Pb. The effectiveness of chitosan as a chelating agent for Pb in the organs is important  for   further investigated. Keywords: Pb, chitosan, kidny, residual Pb,AAS

Sol-Gel Synthesis of SrTiO3Nanoparticles Using Acetic Acid as a Chelating Agent

2013 ◽  
Vol 457 (1) ◽  
pp. 82-88 ◽  
Author(s):  
Patama Visuttipitukul ◽  
Pat Sooksaen ◽  
Niti Yongvanich
Keyword(s):  
Acetic Acid ◽  
Sol Gel ◽  
Chelating Agent ◽  
Sol Gel Synthesis

scholarly journals Delineation of iron and manganese status in soils of central research station Akola

2018 ◽  
Author(s):  
Jayalakshmi Mitnala
Keyword(s):  
Acetic Acid ◽  
Global Positioning System ◽  
Chelating Agent ◽  
Research Station ◽  
Positioning System ◽  
Central Research ◽  
Micronutrient Status ◽  
Global Positioning ◽  
Iron And Manganese

A study of delineation of Iron (Fe) and Manganese (Mn) status in soils of Central Researchstation, Akola was conducted during the year 2006 and 2007. Detailed maps of micronutrient alsoprepared. Delineation of study area was completed with help of global positioning system and forpredicting available cationic micronutrient status extraction with chelating agent such as di ethylenetriamine penta acetic acid (DTPA) is used. The soils of Central Research Station were found 20 percent deficient in iron and 7 per cent deficient in manganese. While the available micronutrient statusof Central Research Station soils was found as iron 0.12 to 16.32 and manganese 0.32 to 16.78.

scholarly journals Novel and facile synthesis of transparent-monolithic TiO2 gels by sol-gel method based on an esterification reaction

2016 ◽  
Vol 34 (3) ◽  
pp. 633-640 ◽  
Author(s):  
Kais Elghniji ◽  
Zohra Anna-Rabah ◽  
Elimame Elaloui
Keyword(s):  
Acetic Acid ◽  
Anatase Phase ◽  
Sol Gel ◽  
Gelation Time ◽  
Chelating Agent ◽  
Active Role ◽  
Titanium Isopropoxide ◽  
Esterification Reaction ◽  
X Ray Diffraction ◽  
External Water

AbstractTransparent TiO2 monoliths were obtained through a modified sol-gel route from titanium isopropoxide as a precursor. By controlling the hydrolysis of this precursor through the intermediate of esterification reaction between acetic acid and isopropanol at 40 °C, transparent TiO2 xerogel monoliths were obtained. The monoliths prepared by this method were transparent in the wavelengths between 400 nm and 700 nm. Fourier transform infrared (FT-IR) spectroscopy suggested that the acetic acid played also an active role as a chelating agent, forming Ti[(OH)y(OOCCH3)x] less reactive species. Powder X-ray diffraction confirmed the amorphous-to-anatase phase transformation with the formation of unknown Ti-containing complex at 90 °C. Only anatase TiO2 could be observed in the samples calcined at 250 °C and 450 °C. Optical aspects of the gel (transparent-transluscent transformation of monolithic gel) and gelation time were controlled by changing the amount of external water.

In Vitro Skin Absorption of the Topically Applied Metal Ion-Chelating Agent Diethylenetriaminepenta-acetic Acid

2003 ◽  
Vol 22 (3) ◽  
pp. 117-124
Author(s):  
Ruth U. Pendlington ◽  
Elizabeth J. Brown ◽  
David J. Sanders ◽  
Helen M. Minter ◽  
Simon Hyde ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Metal Ion ◽  
Chelating Agent ◽  
Skin Absorption

Soil Washing and Bioremediation of Tailing Dam Wastes

2012 ◽  
Vol 610-613 ◽  
pp. 2405-2409
Author(s):  
Li Mei Sun ◽  
Jiang Wu ◽  
Shuai Qi Meng
Keyword(s):  
Heavy Metals ◽  
Acetic Acid ◽  
Oxalic Acid ◽  
Contaminated Soil ◽  
Soil Washing ◽  
Silica Sand ◽  
Critical Parameters ◽  
Tailing Dam ◽  
Leaching Solution ◽  
Plate Counts

The paper presents that soil washing and bioremediation technologies were employed to treat the contaminated soil. Various works were conduced in parallel with each other and th results of the laboratouy studies were used to determine critical parameters. Four lixiviants, i.e. sulphuric acid, acetic acid, oxalic acid and ethylene diamine acetic acid were tests at three concentration levels respectively. The tests showed that the leaching of the heavy metals increases as the soil porosity increases. Silica sand was added to increase porosity of the contaminated soil. Hightest Mn removal was achieved mainly by sulphuric and oxalic acid at 0.001M at all soil samples. EDTA was significantly efficient in the removal of Ni and Zn. The recovery of heavy metals, particalarly Mn, decreased as the depth of samping increased. Heterogeneous bacteria and filamentous organism plate counts were conduced to evaluate the growth of the bacteria and filamentous organisms in the soil. The results from this study suggest that the leaching of heavy metals from the contaminated soil is to a large extent dependant on the pH of the leaching solution. By increasing the soil’s porosity and bioremediating the soil, higher extractions of metals were achieved.

scholarly journals Decontamination of Nickel Toxicity of Soil by Chelate Assisted Remediation using Brachiaria Mutica (FORSSK.) STAPF

2019 ◽  
Vol 8 (3) ◽  
pp. 8199-8203
Keyword(s):  
Acetic Acid ◽  
Contaminated Soils ◽  
Metal Uptake ◽  
Chelating Agents ◽  
Chelating Agent ◽  
Cost Effective ◽  
Wild Plant ◽  
Treated Soil ◽  
Cost Effective Method ◽  
Brachiaria Mutica

Phytoremediation is an environment friendly and cost effective method for remediation of heavy metals from contaminated soils by using plants. Chelate assisted metal uptake by plant has only been discovered in the sector of phytoremediation. It is a potential technology for accumulation of heavy metal by plants after application of chelating agents to soil which enhances the level of metal uptake in phytoremediation processes. Chelating agents are commonly used to form complexes with different metal contaminants within the natural environment. The novelty of this work is to reduce the pollution load by ecofriendly method. The research gap adresses in this study is the reduction of nickel pollution by using chelating agent. In this study two chelating agents namely EDTA (Ethylene diamine tetra acetic acid) and DTPA (Diethylene triamine penta acetic acid) were used along with the nickel treated soil and also with soil without containing nickel to determine the efficiency of decontamination by a wild plant "Para grass" [Brachiaria mutica (Forssk.) Stapf] towards phytoremediation of nickel. In this experiment it was observed that the plant which were subjected to grow in EDTA with nickel treated soil accumulated more nickel than the other two sets which were subjected to grow in nickel treated soil with DTPA and also without chelating agent.

The Effects of the Chelating Agent Ethylenediamine Tetra-acetic Acid on Cell Adhesion in the Slime Mould Dictyostelium discoideum

Development ◽  
1959 ◽  
Vol 7 (3) ◽  
pp. 335-343
Author(s):  
Robert L. Dehaan
Keyword(s):  
Acetic Acid ◽  
Plasma Membrane ◽  
Cell Adhesion ◽  
Cell Surface ◽  
Dictyostelium Discoideum ◽  
Chelating Agent ◽  
Living Cells ◽  
Slime Mould ◽  
Chemical Mechanisms ◽  
Mechanical Separation

Certain properties of living cells appear to depend primarily on changes at, or characteristics of, the cell surface or plasma membrane. Among these ‘surfacelinked’ phenomena are to be classed adhesion of cells to their neighbours or substratum, pseudopodial activity and plasma membrane stability, and, frequently, cell and tissue movements. (Others which might be mentioned, such as pinocytosis, trans-membrane movements of substances, and vacoule formation, will not be considered here.) Attempts to examine these properties in terms of chemical mechanisms have not been notably successful, owing in part to the fact that the experimental material has traditionally been the tissues or embryos of metazoan forms. Thus, investigators have worked with heterogeneous and often constantly changing populations of cells, from which individual cells could be obtained only by the use of more or less deleterious methods such as mechanical separation or treatment with disaggregating agents.

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