نتایج جستجو برای: heavy metal ions

تعداد نتایج: 412588  

Journal: :Biomedical and environmental sciences : BES 2006
Umit Divrikli Durali Mendil Mustafa Tuzen Mustafa Soylak Latif Elci

OBJECTIVE To determine the metal contents of date palm (Pheonix dactylifera) samples in dry season from Denizli-Turkey for investigation of heavy metal-polluted traffic. METHOD The levels of iron, copper, zinc, lead, cadmium, nickel, chromium, and manganese ions in the leaves of thirty five date palm (Pheonix dactylifera) samples collected from various levels of traffic in the streets of Deni...

Journal: :international journal of nanoscience and nanotechnology 2010
a. pourahmad sh. sohrabnezhad b. sadeghi

this study examined the ability of the synthetic mordenite nanocrystal to remove tl(iii) and as(iii) from an aqueous solution. the determination of the concentration changes of h+ and oh- quantities in the acidic (ph 3) and alkali (ph 9) treated mordenite nanocrystals were done by the potentiometric titration curves. the maximum uptake capacities (qmax) of these metal ions using the mordenite i...

In this study the ability of Acidithiobacillus ferrooxidans, with regard to the biorecovery of heavy metals inshake flask has been investigated. Adaptation experiments with the single metal ions Ni, Co, V, Mo, W anda mixture of the first four metal ions in the medium was developed through serial sub-culturing. Adaptationshowed that A. ferrooxidans could tolerate up to 2.3 g/l ...

Journal: :Handbook of environmental engineering 2021

Heavy metal ions contaminate water environment through point sources and nonpoint sources. are categorized as inorganic contaminants by both the WHO USEPA. The heavy increasingly being introduced into pollutants resulting from human activities. Magnetic particles for treatment applications have received considerable attention researchers due to high separation efficiency. magnetic behave simila...

2008
Jihyun Lim Hee-Man Kang Lee-Hyung Kim Seok-Oh Ko

Adsorption of heavy metals by sawdust was investigated to evaluate the effectiveness of using sawdust to remove heavy metals from aqueous solutions. Kinetic and isotherm studies were carried out by considering the effects of initial concentration and pH. The adsorption isotherms of heavy metals fitted the Langmuir or Freundlich model reasonably well. The adsorption capacity of metal was in the ...

2011
Juliana Ivanova Ivayla N Pantcheva Mariana Mitewa Svetlana Simova Makoto Tanabe Kohtaro Osakada

BACKGROUND The natural polyether ionophorous antibiotics are used for the treatment of coccidiosis in poultry and ruminants. They are effective agents against infections caused by Gram-positive microorganisms. On the other hand, it was found that some of these compounds selectively bind lead(II) ions in in vivo experiments, despite so far no Pb(II)-containing compounds of defined composition ha...

Bisma Malik, Pervaiz Ahmad Dar Seema Rashid Sheikh Tanveer Salam Tanveer Bilal Pirzadah

Heavy metal (HMs) pollution is currently one of the serious issues for the environment and agriculture as it has a direct impact on the production yield. This situation has gained a rapid momentum in the present era due to the population pressure, industrialization, and various anthropogenic activities which in turn lead to oxidative ...

Chromium (Cr) and copper (Cu) are heavy metals known for their dangerous effect towards human health and could enter into human body mainly through ingestion. Over the years, different treatment methods have been used to eliminate heavy metal from raw water source and these include (co)precipitation, coagulation/flocculation, adsorption and ion- exchange. Nonetheless, adsorption is the most pro...

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