Chelating Agents of a New Generation as an Alternative to Conventional Chelators for Heavy Metal Ions Removal from Different Waste Waters

Kołodyńska, Dorota

doi:10.5772/21180

Cited by 50 publications

(58 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Probably the best known and most successful chelating agent is ethylenediaminetetraacetic acid (EDTA), first synthesized in 1935 by I.G. Farbenindustrie [37]. EDTA is one of the cheapest and most suitable complexing agents for many technical purposes and has the best cost/performance ratio of all chelates [38].…”

Section: Introductionmentioning

confidence: 99%

“…EDTA is not readily biodegradable, although it experiences some photodegradation at a very slow rate in the environment. Its biodegradation has been demonstrated using specialized bacterial cultures [37][38][39]. The use of EDTA in phytoremediation/phytoextraction has been banned in most countries because of the dangers associated with complexed metals been leached into the environment.…”

Section: Introductionmentioning

confidence: 99%

“…Thousands of tons of EDTA are used every year in industries such as detergent and paper production [37]. EDTA has a low toxicity profile for humans and is commonly used in cosmetics and pharmaceuticals.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Induced Plant Accumulation of Lithium

et al. 2018

View full text Add to dashboard Cite

Lithium's (Li) value has grown exponentially since the development of Li-ion batteries. It is usually accessed in one of two ways: hard rock mineral mining or extraction from mineral-rich brines. Both methods are expensive and require a rich source of Li. This paper examines the potential of agro-mining as an environmentally friendly, economically viable process for extracting Li from low grade ore. Agro-mining exploits an ability found in few plant species, to accumulate substantial amounts of metals in the above ground parts of the plant. Phyto-mined metals are then retrieved from the incinerated plants. Although the actual amount of metal collected from a crop may be low, the process has been shown to be profitable. We have investigated the suitability of several plant species including: Brassica napus and Helianthus annuus, as Li-accumulators under controlled conditions. Large plant trials were carried out with/without chelating agents to encourage Li accumulation. The question we sought to answer was, can any of the plant species investigated accumulate Li at levels high enough to justify using them to agro-mine Li. Results show maximum accumulated levels of >4000 mg/kg Li in some species. Our data suggests that agro-mining of Li is a potentially viable process.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Induced Plant Accumulation of Lithium

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Film diffusion is usually the controlling reaction in dilute solutions whereas the internal diffusion is controlling in more concentrated solutions. The particle size of an ion exchange resin affects both the film diffusion and the internal diffusion (Kołodyńska, 2011).…”

Section: Complexing Agentsmentioning

confidence: 99%

Selective Removal of Heavy Metal Ions from Waters and Waste Waters Using Ion Exchange Methods

Hubicki¹,

Kołodyńska²

2012

Ion Exchange Technologies

110

View full text Add to dashboard Cite

Ion Exchange Technologies 194gastrointestinal tract less than 10% cadmium is absorbed. An important source of human exposure to cadmium is food and water. In natural water its typical concentration lies below 0.001 mg/dm 3 , whereas, the upper limit recommended by EPA (Environmental Protection Agency) is less than 0.003 mg/dm 3 . The maximum limit in drinking water is 0.003 mg/dm 3 .Cadmium accumulates in kidneys, pancreas, intestines and glands altering the metabolism of the elements necessary for the body, such as zinc, copper, iron, magnesium, calcium and selenium. Damage to the respiratory tract and kidneys are the main adverse effects in humans exposed to cadmium compounds. In humans exposed to fumes and dusts chronic toxicity of cadmium compounds is usually found after a few years. The main symptom of emphysema is that it often develops without preceding bronchitis. The second basic symptom of chronic metal poisoning is kidney damage. It includes the loss and impairment of smell, pathological changes in the skeletal system (osteoporosis with spontaneous fractures and bone fractures), pain in the extremities and the spine, difficulty in walking, the formation of hypochromic anemia. The most known 'Itai-Itai' disease caused by cadmium exposure is mixed osteomalacia and osteoporosis. However, an important source of cadmium in soils are phosphate fertilizers. Large amounts of cadmium are also introduced to soil together with municipal waste. The high mobility of cadmium in all types of soils is the reason for its rapid integration into the food chain. Daily intake of cadmium from food in most countries of the world is 10-20 mg.Lead is a toxic metal, which accumulates in the vital organs of men and animals and enters into the body through air, water and food. According to the WHO (World Health Organization) standards, its maximum limit in drinking water is 0.05 mg/dm 3 but the maximum discharge limit for lead in wastewater is 0.5 mg/dm 3 . Its cumulative poisoning effects are serious haematological damage, anaemia, kidney malfunctioning, brain damage etc. Chronic exposure to lead causes severe lesions in kidney, liver, lungs and spleen.Lead is used as industrial raw material in the manufacture of storage batteries, pigments, leaded glass, fuels, photographic materials, matches and explosives. Lead being one of very important pollutants comes from wastewaters from refinery, wastewaters from production of basic compounds containing lead, wastewaters with the remains of after production solvents and paints. Large toxicity of lead requires that its contents are reduced to the minimum (ppb level). To this end there are applied chelating ions with the functional phosphonic and aminophosphonic groups. Also weakly basic anion exchangers in the free base form can be used for selective removal of lead(II) chloride complexes from the solutions of pH in the range 4-6. Also a combined process of cation exchange and precipitation is often applied for lead(II) removal form wastewaters (Pramanik et al. 2009). The average colle...

show abstract

“…In the literature data, there is no information concerning the applicability of ethylenediaminedisuccinic acid as a complexing agent for heavy metal ion removal on HIX based on the hydrous iron oxides. EDDS was only used for heavy metal ion removal in the anionic complexes on anion exchangers, as shown in [39][40][41]. The preliminary results for heavy metal ion removal on Lewatit FO36 were also presented in our previous article [42].…”

Section: Resultsmentioning

confidence: 99%

Evaluation of iron-based hybrid materials for heavy metal ions removal

2013

View full text Add to dashboard Cite

The article presents in detail the results of the sorption of heavy metal ions such as Cu(II), Zn(II), Cd(II), and Zn(II) in the presence of ethylenediamine-N,N 0 -disuccinic acid as well as chromium(VI) on Purolite Arsen X np and Lewatit FO36. Factors affecting the sorption equilibrium (sorbent dose, contact time, temperature, pH, and the presence of interfering ions) were studied. To compare the surface morphologies of the studied ion exchangers, scans using atomic force microscope were also recorded, and attenuated total reflectance infrared spectroscopy was applied to establish the adsorption mechanism. The main parameters affecting sorption are initial concentration of the solution, pH, and phase contact time. Temperature has only a slight influence. The kinetic data were fitted using the pseudo-first-order and pseudo-second-order models. In the case of Cr(VI) adsorption, the equilibriums on Purolite Arsen X np and Lewatit FO36 were established within 60 min, in the case of Cu(II) and Zn(II) within 30-40 min and for Cd(II) and Pb(II) even less than 30 min. Moreover, it was found that the effectiveness of adsorption in the case of Cr(VI), Cu(II), Zn(II), Cd(II), and Pb(II) on Purolite ArsenX np was higher than that on Lewatit FO36.

show abstract

Chelating Agents of a New Generation as an Alternative to Conventional Chelators for Heavy Metal Ions Removal from Different Waste Waters

Cited by 50 publications

References 57 publications

Induced Plant Accumulation of Lithium

Induced Plant Accumulation of Lithium

Selective Removal of Heavy Metal Ions from Waters and Waste Waters Using Ion Exchange Methods

Evaluation of iron-based hybrid materials for heavy metal ions removal

Contact Info

Product

Resources

About