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Removal of heavy metals from wastewater using agricultural and industrial wastes as adsorbents

Removal of Nutrients, Organic Matter and Heavy Metals from Paddy Field Drainage by Charcoal

Removal of Nutrients, Organic Matter and Heavy Metals from Paddy Field Drainage by Charcoal

... that the behavior of TP differs from that of TOC and TN in the equipment. The CVs in heavy metals were larger than those of TOC, TN and TP. Especially, the CV of Fe changed from 0.73 at IN ... the removal properties based on major factors such as initial concentration of water quality item at IN, chemical property for charcoal and heavy metals in soil and water, and so on. Since heavy ... Chemistry and chemical industry, 68 (4), 1 61-169. Journal of Water and Environment Technology, Vol. 7, No. 1, 2009 - 9 - Removal of Nutrients, Organic Matter and Heavy Metals from Paddy...
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Immobilization of heavy metals in sediment dredged from a seaport by iron bearing materials

Immobilization of heavy metals in sediment dredged from a seaport by iron bearing materials

... Health of Vietnam 2 Classification of medical wastes 2 Situation of medical wastes in Vietnam 3 From solid wastes 3 To liquid wastes 4 Financial difficulties 5 Solution of medical wastes ... Liquid medical wastes can be treated much more easily by using one of the latest technologies – Biofast – a kind of machine for filtering liquid wastes. Biofast are outstanding because of its effectiveness ... gases which are eliminated from healthcare premises. Medical wastes include injurious medical wastes and common wastes.  Injurious medical wastes are medical wastes which contain factors...
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Báo cáo

Báo cáo "Reseach on the removal of hexavalent chromium from aqueous solution by iron nanoparticles " doc

... concentration of Fe0 nanoparticles had effect on the reduction of Cr(VI). When the mass ratio of Fe0 to Cr(VI) was 50:1, 100% removal efficency was achieved. pH has important effect on Cr(VI) removal ... concentration of 5mg/l. When treatment time increased then Cr(VI) removal efficiency decreased. The proper mass ratio of Fe nanoparticles to Cr(VI) was about 50:1. 3.4. Effect of iron nanoparticles ... Fig. 2. Effect of the intial pH value on the rate of Cr(VI) reduction. Fig. 2 show that, the Cr(VI) removal efficiency increased with decreasing pH. When pH value from 2,5 to 5 removal efficiency...
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Distribution and mobility of heavy metals

Distribution and mobility of heavy metals

... depend on land use, and are lower forpublic and private green areas and residential sites (‘‘A’’limits) and higher for industrial areas (‘‘B’’ limits). Atsite A, the levels of Cd, Cu, Pb and Zn ... the site of collection, except B20,which was classified as ‘‘A’’ type, and B21, which wasassigned to the correct class but with 74.5% probability.The two pieces of materials (A15 and A16) were ... rest of the area is covered by trees and spontaneous plants. Theland in the zone is made of alluvial deposits. The toplayer of the soil, down to a depth of from 0.6 to 2 m, iscomposed of sand...
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Effect of metal spiking on different chemical pools and chemically extractable fractions of heavy metals

Effect of metal spiking on different chemical pools and chemically extractable fractions of heavy metals

... acidification effected release of Ni,Cu, and Cd from F5(residual fraction), of Ni and Zn from F3fraction, of Zn from F4 and F2fractions from sludge.The released and added metals were incorporated ... case of Zn and Pb, into F4(reducibleor Fe–Al oxide bound) fraction in case of Ni, Cu, and Cd,into F4fraction in case of Pb, Cu, and Cd, into F2fractionin case of Ni, Cd, Pb, and Cu and ... F2fraction of Ni, Pb, Cu, and Cd, F3frac-tion of Pb, Cu, and Cd, F4or reducible fraction of Ni, Cu, and Cd and residual fraction of Zn and Pb, but decreased F2fraction of Zn,F3 of Zn and Ni,...
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Báo cáo hóa học:

Báo cáo hóa học: " Research Article Removal of Color Scratches from Old Motion Picture Films Exploiting Human Perception" pdf

... automaticdetection and removal. The detection algorithm has a high precision in terms of number of detected true scratches and reducednumber of false alarms. The quality of the restored images is satisfying from ... length of the low pass filter associated to the employed wavelets basis and mis the estimated scratch width. Let{AJ, {Vj}1≤j≤J} respectively be the low and high pass sub-bands of thedecomposition;(4) ... coherency analysis and removal using edge prioritybased interpolation,” in Proceedings of IEEE InternationalSymposium on Circuits and Systems (ISCAS ’06), pp. 4591–4594, Kos Island, Greece, May...
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Magnetic chitosan nanoparticles for removal of Cr(VI) from aqueous solution

Magnetic chitosan nanoparticles for removal of Cr(VI) from aqueous solution

... IntroductionContamination of water by toxic heavy metals through the dis-charge of industrial wastewater is a worldwide environmental prob-lem. Rapid industrialization has seriously contributed to the release of ... HCrO4−through cell membranes and o xidize biological molecules [1].Awiderange of physical and chemical processes are available for the removal of chromium from wastewater such as filtratio n [2], electrochemical ... mL of solution containing various amount of Cr(VI). The pH value of solutions was adjusted by using diluted solution of NaOH and HCl.The temperature of the solutions (25 °C, 35 °C, 45 °C) was...
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Báo cáo khoa học: Crystal structures of the apo form of b-fructofuranosidase from Bifidobacterium longum and its complex with fructose pot

Báo cáo khoa học: Crystal structures of the apo form of b-fructofuranosidase from Bifidobacterium longum and its complex with fructose pot

... the b-propeller and b-sandwichdomains involve contacts of IV and V blades and b-strands (1–6) from the internal b-sheet of the b-sand-wich domain. The last four amino acids of the nativesequence ... the basis of amino acid sequence similarity,the protein from B. longum KN29.1 has been classifiedto family 32 of the glycoside hydrolases as b-fructofura-nosidase [47,48].A high level of expression ... sequence (518 amino acids) of b-fruc-tofuranosidase from B. longum KN29.1 determined onthe basis of 1557 nucleotides (the complete ORF of gene b-fructofuranosidase) was compared with otheramino...
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Báo cáo khoa học: Molecular imprinting of cyclodextrin glycosyltransferases from Paenibacillus sp. A11 and Bacillus macerans with c-cyclodextrin pptx

Báo cáo khoa học: Molecular imprinting of cyclodextrin glycosyltransferases from Paenibacillus sp. A11 and Bacillus macerans with c-cyclodextrin pptx

... for comparison.The effect of pH on the activity of the differentCGTase preparations from A11 and BM wasTable 1. Degree of derivatization of the CGTases from A11 and BM obtained with different ... the yield of CD8increased four-foldwith the CLIP CGTase from A11, and three-fold withthe CLIP CGTase from BM, after 24 h of reaction.The amount of CD8produced by the CLIP CGTase from BM ... mL of 4 mm phenolphthalein in ethanol, 4 mL of ethanol and 100 mL of 125 mm Na2CO3in distilled water. The absorp-tion was measured at 550 nm, and the amount of CD7formed was calculated using...
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