removal of methyl ethyl ketone quot mek quot

Executive summary Proceeding of the international conference "sustainable development and ethnic minority poverty reduction in mountainous regions"

... Rural Development, Ministry of Agricultural Research and Development), Mr Gavan McCann (Chair of the Ethnic Minority Poverty Working Group, Deputy Head of Mission, Head of Development, Irish Aid), ... quarters of the natural area of the country These areas are inhabited by 54 ethnic groups, of which there are 53 ethnic minority groups with over 13 million people, accounted for 14.28% of the ... system of the highland people is also needed to consider due to different characteristics of each region Assessment of local people during the deployment process will ensure the success of model...

Removal of congo red from wastewater by adsorption onto waste red mud

Danh mục: Môi trường

... Fe(III)/Cr(III) Namasivayam of dairy (11) and coworkers from employed solutions of using containing congo fly ash and coal(g) et al (12) have of nickel of this a textile such of chlorophenol study ... formation higher to This of red mud is also at solid/solution solution pH range of alkalinity final dye removal after to explain in adsorption basis of final pH in the important removal pH 11 the due ... of contact time and concentration Figure initial The concentration removal contact until of time was rapid gradually concentrations 36.5 10 to $ to 40 mg/L continuous surface used agitation of...

Báo cáo y học: " Surgical Removal of lipoma from an area with tattooed skin"

Danh mục: Y học thưởng thức

... similar case of surgical removal of lipoma from an area with tattooed skin using this aesthetic procedure was found in literature The intent of the case study is to highlight the use of pre-existing ... to meet the need of our patient of removing the lipomatous formation while keeping the tattoo intact, during the surgical treatment of the lipoma, we followed the exact lines of the tattoo itself ... obtained from the patient for publication of this case report and accompanying images A copy of the written consent is available for review by the Editor-in-Chief of this journal AUTHORS' CONTRIBUTIONS...

Riverbank filtration: removal of iron, manganese and hardness

Danh mục: Môi trường

... method, a majority of the people in the lower part of the river is dissatisfied with the quality of tap water Moreover, in case of accidental spill of pollutant, the distribution of water should ... DISCUSSION Nanofiltration of hardness removal Three types of nanofiltration membrane such as UTC-60(TORAY), NTR729-HF(NITTO DENCO) and UTC-20(TORAY) was used The characteristics of membrane were ... characteristics of membrane were shown in Table Table Characteristics of nanofiltration membrane Percent removal of NaCl Percent removal of MgSO4 at 25℃ at 25℃ Type Material Charge NTR729HF Polyvinyl...

Improvement of Water Quality by Removal of Suspended Solids and High-speed Biological Filtration in Closed Water Body

Danh mục: Môi trường

... system, and the removal of nitrogen should be considered, too References [1] Department of Water Environment, Ministry of the Environment, Japan July 2002 Outline of Administration of Water Environment ... outlet of equipment Transparency[cm] 60 out of experimental area 50 40 30 20 10 10 15 20 25 30 35 40 45 50 Time[d] Figure Variation of Transparency Variation of COD concentration Variation of COD ... influence of these disturbances was found Some sampling points were selected They are the outlet of plant, the outside of experimental area, points of horizontal level and 0.5, 1.0, 1.5 m of vertical...

Removal of arsenic from synthetic groundwater by adsorption using the combination of laterite and ironmodified activated carbon

Danh mục: Môi trường

... is one of the most important parameters to look at in column study for arsenic removal by sequential combination of LA and AC-Fe In Figure 10, at flow rate of 5mL/min or space velocity of 1.22m3/m3 ... 6mL/min (or space velocity of 0.98-1.47m3/m3h), pH of 7-8, and initial arsenic concentration of 0.1-0.5mg/L, to obtain a breakthrough time of more than 100 hours The operation of the column is very ... with a total volume of 1000mL This stock solution has an arsenic concentration of 1000mg/L - 44 - Journal of Water and Environment Technology, Vol 6, No.1, 2008 Table Composition of synthetic groundwater...

Occurrence of Polyhydroxyalkanoate as Temporal Carbon Storage Material in Activated Sludge during The Removal of Organic Pollutants

Danh mục: Môi trường

... 1mL water was added to it, the tube was shaken, and, the methyl ester of PHA monomers in the chloroform layer was collected The chloroform phase was washed again with 0.5mL water, and then injected ... activated sludge reactor was lyophilized After the addition of 2mL of chloroform and acidified methanol (10% sulfuric acid with around 100mg/L of benzoic acid), the content in the tube was mixed well, ... rate of 30mL/minute Sodium 3-hydroxybutyrate (Tokyo Chemical Industry, Japan) was used as the standard for 3-hydroxybutyrate (3HB) unit in PHA The copolymer composed of 81% of 3HB and 19% of 3-hydroxyvalerate...

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

Danh mục: Môi trường

... structure of this equipment Relation of removal ability among substances As the removal ability of a substance may be affected by other substances, we investigated the correlation of reduction ... removal is filtration at the portion of inlet and outlet and at the boundary of nylon nets bags with charcoal, and is adsorption when drainage water contacts the surface of charcoal because of ... deviation, CV: Coefficient of variation - 12 - Journal of Water and Environment Technology, Vol 7, No 1, 2009 The water qualities of inflow water (IN) and outflow water (OUT) of the equipment are shown...

Removal of arsenic from simulated groundwater by adsorption using iron-modified rice husk carbon

Danh mục: Môi trường

... investigate the effects of pH values within the range of 5-9, of initial arsenic concentrations within the range of 1.42 - 7.39 mg/L and of adsorbent doses within the range of 0.5 - 5.0g/L, as well ... on arsenic removal for samples containing RH-Fe5%, particle size of 0.1-0.35 mm, with Co of 1.42-7.38 mg/L, adsorbent dose of 2.5 g/L, pH of simulated groundwater (pH 8.18) Comparison of adsorption ... of pseudo-2nd order kinetics on arsenic removal for samples containing RH-Fe5%, particle size of 0.1-0.35 mm, with adsorbent dose of 2.5 g/L, pH of simulated groundwater (pH8.18) Comparison of...

Removal of Cadmium from Aqueous Solutions by Charcoals Prepared from Giant Reed (Arundo donax)

Danh mục: Môi trường

... concentration of cadmium was 10 mg-Cd/L, the volume of solution was 50 mL, and the amount of charcoal was 20 mg Three days from the start of contact (concentration of cadmium was mg-Cd/L, amount of cadmium ... 1.1 N 0.5 Ash 3.1 Journal of Water and Environment Technology, Vol 8, No.4, 2010 Removal of cadmium from aqueous solutions For estimating the removal rate, time courses of cadmium concentration ... (2002) Removal of Copper(II) and Cadmium(II) in Water by Use of Roasted Coffee Beans, J Chem Soc Japan, No 3, 459-461 (In Japanese) Petrov N., Budinova T and Khavesov I (1992) Adsorption of the...

Utilization of activated carbon for the removal of basic dyes in fixed-bed microcolumn

Danh mục: Môi trường

... flowrate of the liquid (3) The adsorbent exhaustion rate is the mass of adsorbent used per volume of liquid treated at breakthrough: Adsorbent Exhaustio rate (g/dm ) = Mass of adsorbent used Volume of ... prediction of column adsorption process requires prediction of breakthrough curves for the effluent The maximum adsorption capacity of an adsorbent is also required in the design of the column ... calibration of fixed-bed adsorption models with microcolumn data could satisfactorily simulate the bed performance for large column The focus of this work is directed at the evaluation of the success of...

Photodegradation and removal of phenol and phenolic derivatives from petroleum refinery wastewater using nanoparticles of TiO2

Danh mục: Môi trường

... the discovery of the photocatalytic properties of TiO2 and the demonstration of its effectiveness to generate hydroxyl radicals in the presence of UV light [8] The more activity of the UV/TiO2 ... adsorption of phenolic compounds by TiO2 particles, or to the volatility of a part of light hydrocarbons due to the air flow or heating the reactor Figure The effect of UV light on degradation of phenolic ... be argued with the help of pH of zero point of charge (pHzpc) and the adsorption of the pollutants on the catalyst Since TiO2 has an amphoteric character with a point of zero charge 6.25 [26],...

Tài liệu Experiment 17 Preparation of Methyl Orange ppt

Danh mục: Hóa học - Dầu khí

... acetic acid This forms the dimethylaniline acetate salt Neutralize this in situ and the dimethylaniline becomes a good nucleophile due to the activating effect of the dimethylamine substituent Attack ... solution of N,N-dimethylaniline (0.010 mol) in 0.010 mol of acetic acid in a 25 ml Erlenmeyer flask Now add the dimethylaniline acetate solution slowly with constant stirring to the suspension of the ... melting point of your methyl orange as it decomposes on heating In order to observe the beautiful color change that occurs with our orange indicator dye, dissolve a small amount of the methyl orange...

Tài liệu Báo cáo khoa học: Enhanced thermostability of methyl parathion hydrolase from Ochrobactrum sp. M231 by rational engineering of a glycine to proline mutation pdf

Danh mục: Báo cáo khoa học

... the product, p-nitrophenol, from the substrate, methyl parathion [5,8] The assay mixture (150 lL) contained lL of mgÆmL)1 methyl parathion, 50 lL of puriﬁed protein FEBS Journal 277 (2010) 4901–4908 ... J, Shen Y & Li S (2009) Expression of methyl parathion hydrolase in Pichia pastoris Curr Microbiol 59, 573– 578 Yang C, Freudl R & Qiao C (2009) Export of methyl parathion hydrolase to the periplasm ... X (2005) Crystal structure of methyl parathion hydrolase from Pseudomonas sp WBC-3 J Mol Biol 353, 655–663 Xiao W, Chu X, Tian J, Guo J & Wu N (2008) Cloning of a Methyl Parathion Hydrolase Gene...

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

Danh mục: Báo cáo khoa học

... Conclusion The removal of Cr(VI) by Fe0 nanoparticles was studied, the 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 ... the concentration of initial Cr(VI) After 20 minutes, the removal is 100% at concentration of 2mg/l and 69.32% at concentration of 5mg/l When treatment time increased then Cr(VI) removal efficiency ... mg/l Fig Effect of iron nanoparticals concentration Cr(VI) = 5.0 mg/l 0.6 0.4 0.2 0 10 20 30 40 50 60 Time(min) Fig Effect of initial Cr(VI) concentration on the rate of Cr(VI) removal efficiency...

Báo cáo khoa học: Post-translational modiﬁcations in the active site region of methyl-coenzyme M reductase from methanogenic and methanotrophic archaea potx

Danh mục: Báo cáo khoa học

... Peptides containing N-methylhistidine, 5-methylarginine or 2-methylglutamine The methylated histidine (H257) was found in the a-subunit of MCRs from all methanogenic archaea and of the two MCRs from ... Methanothermobacter marburgensis Two of these modiﬁed amino acids, 2-(S)methylgutamine and 5-(S)-methylarginine, have until now not been found in any other protein 1-N-Methylhistidine ¼ 3-methylhistidine according ... primarily with unreactive aromatic and aliphatic amino acid residues The methyl groups of S-methylcysteine, 5-methylarginine and 2-methylglutamine are oriented towards the active site chamber FEBS Journal...

Báo cáo khóa học: Fidelity of targeting to chloroplasts is not affected by removal of the phosphorylation site from the transit peptide doc

Danh mục: Báo cáo khoa học

... location of targeted proteins in living tissue avoids the potential artefacts of in vitro systems, in particular their lack of specificity Furthermore, the stability of GFP ensures that problems of ... punctate pattern of these smaller organelles is apparent The scale bar in all images is 10 lm Effect of alteration of phosphorylation site on GFP-targeting by transit peptides of pea SSU and dual-targeted ... transit peptides of two amino Ó FEBS 2004 Chloroplast targeting fidelity (Eur J Biochem 271) 513 Fig The effect of mutagenesis of the phosphorylation site in the transit peptide of tobacco SSU on...

Báo cáo Y học: The function of methyl-menaquinone-6 and polysul®de reductase membrane anchor (PsrC) in polysul®de respiration ofWolinella succinogenes doc

Danh mục: Báo cáo khoa học

... (approximately lmol per g phospholipid) of MK6 and of MM [34] The methyl group in the aromatic ring of MM is at position or Like MK, MM appears to be dissolved in the lipid phase of the membrane and is not ... Activities of Psr and of polysulđde respiration The activity of Psr was measured at 37 C by photometric recording of polysulđde reduction with BH4 [24] or by photometric recording of DMN reduction ... Physical map of the psr locus of W succinogenes DpsrC and KpsrC Mutant KpsrC was obtained by integration of pKpsrC into the genome of the DpsrC mutant ể FEBS 2002 Polysulđde respiration of W succinogenes...

Consultation on the Removal of Speaking and Listening Assessment from GCSE English and GCSE English Language ppt

Danh mục: Kỹ năng nghe tiếng Anh

... analysis of these proposals, which is published separately.3 www.ofqual.gov.uk/files/2013-04-25-equality-analysis-speaking-and-listening-changes.pdf Ofqual 2013 Consultation on the Removal of Speaking ... line of the email  Post your response to GCSE English consultation, Ofqual, Spring Place, Coventry Business Park, Herald Avenue, Coventry, CV5 6UB Ofqual 2013 12 Consultation on the Removal of ... grade because of a strong performance in speaking and listening may achieve a lower grade Conversely, students who would not have performed Ofqual 2013 Consultation on the Removal of Speaking and...

removal of basic blue 159 from aqueous solution using

Danh mục: Vật lý

... et al., J Appl Chem Res., 7, 4, 51-62 (2013) 56 Effect of the mass of adsorbent dye removal percentage by different masses of The removal of BB159 by banana peel were adsorbent is shown The results ... shown that if the pH of a solution is higher than to,(1) the surface charge of the adsorbent, (2) the the value of pH pzc, the surface of the adsorbent degree of ionization of the adsorptive molecule ... Effect of adsorbent dose on the adsorption of BB159 on banana peel Effect of pH of BB159 by banana peel It was revealed that The pH of the dye solution is one of the most the decolonization efficiency...

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