Study properties and mechanisms adsorption heavy metal ions on materials made from red mud

... increases, which results in more metallic ions absorbed and less ions remain in water in equilibrium, showing as the removal of metallic more ions In the mean time, as the ion content in water decreases, ... or honeycomb, of PTW by mixing and calcining with a suitable binder material Research in this area is being done in Shandong University ACKNOWLEDGMENT This resea...

Ngày tải lên: 05/09/2013, 09:38

... (Bhattacharya and Venkobachar, 1984; Panday and Singh, 1985; Yadava et al., 1987) for a limited number of metals The alternative mechanism for heavy metal removal by red muds and fly ashes (either ... of metallurgical solid wastes as cost-effective sorbents in heavy metal removal from contaminated water, red muds and especially fly ashes have been shown to exhibit...

Ngày tải lên: 23/09/2012, 14:47

... ion adsorption Spectroscopic evidence suggested the formation of weak mono- and binuclear metal- like outer-sphere complexes Parameters influencing adsorption Adsorption of heavy metal ions on soils ... the adsorption of different heavy metals onto soil humic acid [5] 50% of the Cd or Zn is adsorbed between pH 4.8–4.9 In general, adsorption of heavy metals on...

Ngày tải lên: 15/03/2014, 23:09

... DEVELOPMENT OF MULTIFUNCTIONAL MEMBRANES FOR VISUAL DETECTION AND ADSORPTIVE REMOVAL OF HEAVY METAL IONS FROM AQUEOUS SOLUTIONS ZHANG LINZI (B Eng., Xi’an Jiaotong ... to develop multifunctional membranes for visual detection and removal of heavy metal ions in aqueous solutions Lead (Pb), mercury (Hg) and cadmium (Cd) were selected...

Ngày tải lên: 09/09/2015, 17:52

... STUDY OF POLYAMINES -FUNCTIONALIZED PGMA BEADS AS ADSORBENTS FOR THE REMOVAL OF HEAVY METAL IONS FROM AQUEOUS SOLUTIONS LIU CHANGKUN (B Eng., Tianjin University) A THESIS SUBMITTED FOR THE ... of functional adsorbents for the removal and separation of heavy metal ions from water or wastewater The application of amine -functionalized...

Ngày tải lên: 14/09/2015, 08:48

... compare these two models for appropriate modeling and prediction of heavy metal toxicity and accumulation Funaria hygrometrica Hedw is one of the most tolerant mosses to heavy metals (Itouga ... prediction of heavy metal toxicity and accumulation in organisms CONCLUSIONS Two BLMs predicting copper toxicity and copper accumulation in F hygr...

Ngày tải lên: 05/09/2013, 10:15

... mixture did not result in their insertion into MPT (data not shown) In addition, we tested the insertion of metal ions into MPT-containing hSO None of the metals was inserted into hSO (Fig 3B), which ... for the biosynthesis of Moco in bacteria [22] In addition to copper, various metals are known to bind tightly to sulfur-rich sites, leading to the question...

Ngày tải lên: 23/03/2014, 06:20

... SYNERGISTIC EFFECT OF TWO FOREIGN METAL IONS ON SHAPE- SELECTIVE SYNTHESIS OF GOLD NANOCRYSTALS TRAN TRONG TOAN (B.Sc (Hons.), University of Science Ho Chi Minh City) ... ratio of Ag and Pd ions The synergistic effect of Ag and Pd ions on the formation of the novel Au nanocrystals was studied In our experimental conditions, the underpotential dep...

Ngày tải lên: 13/10/2015, 16:41

... absorption were analyzed/tested in the laboratory of Construction material, Hanoi University of Construction The environmental safety of sludge re-usage was assessed based on heavy metals leaching ... ratio origin material (%) In further study, heavy metal leaching into rain water with lower pH value and longer soaking time should be investigated; the use of mi...

Ngày tải lên: 12/02/2014, 17:20

... histidines (His67 and His247, presumably providing metal binding at site II and the neighbouring His242) bind phosphate ions, thereby providing another level of competition for metal ion binding Kinetics ... modelling of Cu(II) and Ni(II) transport by albumins On the other hand, the direct thermodynamic and kinetic characterization of Ni(II) binding at sit...

Ngày tải lên: 22/02/2014, 04:20

... Percentage concentration of ethanol in MnSO4 solution and EP2: Percentage concentration of ethanol in KMnO4 solution Table showed strong effect of ethanol concentration in reagents’ solution on MnO2 ... solution became colorless Arsenic adsorption test Let MnO2 coated materials contact with arsenic solution Then concentration of arsenic in water phase was det...

Ngày tải lên: 14/03/2014, 10:20

... microbiological activity and plant uptake PURIFICATION CAPACITY OF WETLANDS Observations show that both natural and artificial wetlands have a capacity to purify wastewater containing heavy metals (Matagi, ... contamination and plant genotype REMOVAL MECHANISMS OF HEAVY METALS IN WETLANDS SEDIMENTATION AND FLOCCULATION Once a heavy metal is in a wetland, whethe...

Ngày tải lên: 15/03/2014, 23:06

... ABSTRACT A Meta- Analysis and Risk Assessment of Heavy Metal Uptake in Common Garden Vegetables by Trent David LeCoultre Peer reviewed literature was searched to identify research pertaining ... concentration of Cd 43% in the roots of oats Trace metal deficiencies in plants have been associated with increases in heavy metal uptake (Khan and Frankla...

Ngày tải lên: 15/03/2014, 23:10

... amounts and modes of EDTA application on Pb, Zn and Cd uptake by test plant Brassica rapa We monitored the leaching of HMs and EDTA through the soil profile We also tested phytotoxicity and toxicity ... from control treatments and treatments with weekly additions of EDTA, suggested that EDTA mobilized heavy metals and caused significant leaching The dynamic of Pb, Zn...

Ngày tải lên: 16/03/2014, 00:07

... Based upon the changes in different chemical pools of heavy metals in sludge due to metal spiking and incubation, it appeared that bio-oxidation of organic carbon and consequent acidification effected ... **, * and NS indicate significance at P = 0.01, 0.05 and non-significant difference between pairs, respectively 3.3 Effect of metal spiking and incubation o...

Ngày tải lên: 16/03/2014, 00:07