Adsorption of Cd, Cu, Ni and Zn in tropical soils under competitive and non-competitive systems
نویسندگان
چکیده
منابع مشابه
Competitive Adsorption of Cu, Ni, Pb, and Cd from Aqueous Solution Onto Fly Ash-Based Linde F(K) Zeolite
The reaction of fly ash with a KOH solution was used to synthesize Linde F(K) zeolite, following which Fourier transform infrared spectroscopy were used to characterize the crystalline material. The competitive adsorption of Cu, Ni, Pb, and Cd onto this zeolite was subsequently studied in quaternary solution systems. The results show that the metal removal rates gradually increase with incr...
متن کاملaccumulation of heavy metals (cu, zn, cd and pb) in sediment and selected organisms in lukut river, negrisembilan, malaysia, and toxocological studies of heavy metals (cu, zn, cd and pb) on penaeus monodon (fabricius, 1798) juveniles
چکیده ندارد.
15 صفحه اولFractionation of Cd, Cu, Ni, Pb, and Zn in floodplain soils from Egypt, Germany and Greece
Trace elements are potentially toxic to human life and the environment. Element toxicity depends on chemical associations in soils. Therefore, determining the chemical form of an element in soils is important to evaluate its mobility and bioavailability. Initial soil development in river floodplains influences soil properties, processes and therefore behavior of trace elements. In this study, t...
متن کاملReaction-based model describing competitive sorption and transport of Cd, Zn, and Ni in an acidic soil.
Predicting the mobility of heavy metals in soils requires models that accurately describe metal adsorption in the presence of competing cations. They should also be easily adjustable to specific soil materials and applicable in reactive transport codes. In this study, Cd adsorption to an acidic soil material was investigated over a wide concentration range (10(-8) to 10(-2) M CdCl2) in the pres...
متن کاملUsing isotopic dilution to assess chemical extraction of labile Ni, Cu, Zn, Cd and Pb in soils.
Chemical extractants used to measure labile soil metal must ideally select for and solubilise the labile fraction, with minimal solubilisation of non-labile metal. We assessed four extractants (0.43 M HNO3, 0.43 M CH3COOH, 0.05 M Na2H2EDTA and 1 M CaCl2) against these requirements. For soils contaminated by contrasting sources, we compared isotopically exchangeable Ni, Cu, Zn, Cd and Pb (EValue...
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ژورنال
عنوان ژورنال: Scientia Agricola
سال: 2010
ISSN: 0103-9016
DOI: 10.1590/s0103-90162010000300008