dissolved organic carbon concentrations
Effect of dissolved organic matter (DOM) and biofilm on the adsorption capacity of powdered activated carbon in activated sludge
Ngày tải lên :
05/09/2013, 08:40
... developed on PAC, the incubation was The amount of organic carbon was indicator as the amount of biofilm developed on PAC shows the amount of organic carbon on PAC after each incubation Figure Figure ... Water and Environment Technology, Vol.1, No.2, 2003 3.2 Effects of dissolved organic matter (DOM) on adsorption capacity of PAC DOC concentrations in the effluent of the control rector ranged from ... activated carbon Water Research 13, 1225-1231 Xiaojian Z., Zhansheng W., and Xiasheng G (1991) Simple combination of biodegradation and carbon adsorption-the mechanism of the biological activated carbon...
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Biological Alteration of Zinc Complexation Characteristics of Dissolved Organic Matter in Domestic Wastewater Treatment Plant Effluent under River Water Environment
Ngày tải lên :
05/09/2013, 10:15
... complexation parameters Determination of dissolved and labile Zn, DOC, UV absorbance and SUVA Dissolved organic carbon concentration was measured as non-purgeable organic carbon with a TOC analyzer (TOC-VCSH, ... disinfected by chlorination, in the late morning of a dry day in April, 2009 (pH = 7.0; dissolved organic carbon (DOC) = 8.1 mg/L; average ambient temp = 19°C) River water samples for preliminary ... of dissolved natural organic matter from different surface waters, Journal of Environmental Management, 80, 222-229 Ma H., Allen H E and Yin Y (2001) Characterization of isolated fractions of dissolved...
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Influence of Phosphorus Concentration on the Biodegradation of Dissolved Organic Matter in Lake Biwa, Japan
Ngày tải lên :
05/09/2013, 10:17
... Fractionation of dissolved organic carbon from the waters of Lake Biwa and its inflowing rivers, Jpn J Limnol., 59, 53-68 (in Japanese) Imai A (2002) Accumulation of recalcitrant dissolved organic matter ... particulate organic matter did not affect CODMn, the possibility of accumulation of dissolved organic matter (DOM) is pointed out (Imai, 2002) On the other hand, Takahashi (1999) reported that dissolved ... of dissolved organic matter, Annual Rep Lake Biwa Res Inst., 16, 49-52 (in Japanese) Yoshida H., Goto N and Mitamura O (2004) Nutrients as a limiting factor of biodegradation of dissolved organic...
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Controls of bioavailability and biodegradability of dissolved organic matter in soils
Ngày tải lên :
15/03/2014, 23:22
... assimilable organic carbon and biodegradable dissolved organic carbon Environ Sci Technol 35, 3442 – 3447 Fritze, H., Pennanen, T., Kitunen, V., 1998 Characterization of dissolved organic carbon from ... decomposition and dissolved organic carbon quality Soil Biol Biochem 31, 367 – 374 Moore, T.R., 1997 Dissolved organic carbon: sources, sinks, and fluxes and role in the soil carbon cycle In: ... measuring the biodegradable dissolved organic carbon (BDOC) in waters Water Res 26, 481 – 486 Boissier, J.M., Fontvieille, D., 1993 Biodegradable dissolved organic carbon in seepage waters from...
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Correlation of the partitioning of dissolved organic matter fractions with the desorption of cd
Ngày tải lên :
15/03/2014, 23:22
... equilibration time, temperature and organic matter J Environ Qual 1999;28:1742 – 50 Andersson S, Nilsson SI, Saetre P Leaching of dissolved organic carbon (DOC) and dissolved organic nitrogen (DON) in ... analyzed for their carbon (C) content by a TOC analyzer (DC 190, Rosemount Analytical, Dohrmann Division, Santa Clara, CA) Solid phase organic carbon (SPOC) was calculated from total carbon measurements ... significant portion of the metals could disassociate from the organic molecules and become more biologically active Fig Dissolved soil organic carbon (DOC) in the fractions (FA, HA and Hyd) as a function...
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Volatile Organic Compound Concentrations and Emission Rates Measured over One Year in a New Manufactured House pptx
Ngày tải lên :
22/03/2014, 14:20
... aldehydes and aromatic hydrocarbons Indoor minus outdoor VOC concentrations varied with time Adjusted formaldehyde concentrations exhibited the most temporal variability with concentrations ranging ... wall cavity concentrations to times higher than their corresponding indoor concentrations VOC concentrations in the belly space were measured during four sampling events Adjusted belly concentrations ... VOC concentrations over the entire belly space Crawl space concentrations were measured during five sampling events Adjusted crawl space concentrations were compared to average adjusted indoor concentrations...
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Input and output of dissolved organic and inorganic nitrogen in subtropical forests of South China under high air pollution docx
Ngày tải lên :
23/03/2014, 00:20
... elevated N deposition in warm and humid forests Here we report the concentrations and fluxes of dissolved inorganic (DIN) and organic N (DON) in precipitation, throughfall, surface runoff and soil ... reported similar dissolved inorganic N (DIN) deposition in bulk precipitation in 2004 (Fang et al., 2007) Here we have continued these measurements but including also analysis of dissolved organic N ... on dissolved organic matter and inorganic nitrogen in soil solution, Forest Ecol Manag., 196, 29–41, 2004 Michalzik, B., Kalbitz, K., Park, J H., Solinger, S., and Matzner, E.: Fluxes and concentrations...
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quantifying organic carbon fluxes from upland peat
Ngày tải lên :
31/08/2014, 20:46
... 2.2.7 Sample analysis……………………………………………………… 45 2.2.8 Total organic carbon ……………………………………………… 46 2.2.8.1 Prepared total carbon and inorganic carbon standards…………… 47 2.2.8.2 Drift correction…………………………………………………… ... SsOC SE TFU TOC U v/v Aquagenic Aromatics and polyaromatics Carbon Chemical Data Systems Deionised water Dissolved organic carbon Dissolved oxygen Eroded Electrical conductivity Extracellular ... Abstract The University of Manchester Do Duy Phai PhD Quantifying organic carbon fluxes from upland peat 21st March 2012 Present organic carbon fluxes from an upland peat catchment were quantified...
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Fouling and accumulation of dissolved organic matter in membrane bioreactors
Ngày tải lên :
14/09/2015, 11:16
... membrane (Pieracci et al., 1999) 27 Chapter 2-Literature Review 2.3 Characterizing Dissolved Organic Matter Dissolved organic matter (DOM) can range in molecular weight from a few hundred to ten thousand ... of MBR systems (Visvanathan et al., 2000; Gunder, 2001; Bai and Leow 2002) 2.2.1.2 Dissolved Organic Matter Dissolved macromolecules, on the other hand, impact both on internal and external fouling, ... characteristics of DOM obtained from the pilot MBR systems were investigated using the classical dissolved organic carbon (DOC) preparative fractionation method DOM was fractionated into four more homogeneous...
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Occurrence of Polyhydroxyalkanoate as Temporal Carbon Storage Material in Activated Sludge during The Removal of Organic Pollutants
Ngày tải lên :
05/09/2013, 09:38
... measurement of dissolved organic carbon (DOC), activated-sludge-mixed liquor was filtrated with glass microfibre membrane GF/C (Whatman International Ltd Maidstone, England) Organic carbon concentration ... observation means that not only removed soluble organic matters but also other organic matters were converted as PHA One possible carbon source is the particulate organic matters in wastewater, and DOC ... concentration of PHA in these reactors was determined, and the fractions of carbon stored as PHA were calculated from the carbon mass balances in the anaerobic or microaerophilic zone of these studied...
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The Carbon and Global Warming Potential Impacts of Organic Farming: Does It Have a Significant Role in an Energy Constrained World? pptx
Ngày tải lên :
08/03/2014, 23:20
... gain in carbon storage, a management practice or system must (a) increase the amount of carbon entering the soil as plant residues or (b) suppress the rate of soil carbon decomposition Organic ... on organic farming: A comparative analysis on organic versus conventional farms in Turkey J Agron 2006, 5, 16-22 91 Gü ndogmus, E Energy use on organic farming: A comparative analysis on organic ... management quality in either organic or conventional systems is key and well managed conventional systems may outperform organic systems, i.e., that adoption of some organic technologies in conventional...
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USEPA REGION 9 TECHNICAL GUIDELINES FOR ACCURATELY DETERMINING VOLATILE ORGANIC COMPOUND (VOC) CONCENTRATIONS IN SOIL AND SOLID MATRICES potx
Ngày tải lên :
14/03/2014, 20:20
... update and replace the EPA Region “Regional Interim Policy for Determination of Volatile Organic Compound (VOC) Concentrations in Soil and Solid Matrices,” June 23, 1999 If you have any questions, ... 5035, “Closed-System Purgeand-Trap and Extraction for Volatile Organics in Soil and Waste Samples,” and Method 5021, “Volatile Organic Compounds in Soils and Other Solid Matrices Using Equilibrium ... for determining concentrations of VOCs that have a high affinity for the soil matrix) 7.0 ADDITIONAL BACKGROUND Traditional practices for the sampling and analysis of volatile organic compounds...
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Chemicals,Chemicals Organic, Chemicals Inorganic, Zeolite, Sulphate, Wax, Activated Carbon, Polishing, Compounds, Acids, Starch, Nitrate, Phosphate, Formaldehyde, Biotechnology, Enzymes, Bio Fertilizer, Vermiculture and Vermi Compost docx
Ngày tải lên :
22/03/2014, 14:20
... Cable Jelly Compound Calcium Carbonate (Pre Activated) Calcium Carbonate By Using Sea Shell Calcium Carbonate From Limestone Calcium Carbonate From Marble Chips Calcium Carbonate Precipitated Calcium ... Chloro Acetyl Chloride Charcoal Carbon Black From Fertilizer Waste Carbon Brushes Carbon Dioxide Carbon Black Chloro Ethyl Caustic Soda Charcoal From Coconut Shell Carbon Monoxide Calcium Carbide ... Acid (Phenol) Carbon Black From Furnace Oil Carbon Black From Natural Gas Carbon Black From Anthracene Oil Citric Acid From Grape Pulp Carboxymethyl Cellulose (CMC) Carbon Dioxide Carbon Tetra...
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Báo cáo khoa học: " relationships for carbon and nitrogen during early growth of Juglans regia L. seedlings: analysis at two elevated CO concentrations 2" doc
Ngày tải lên :
08/08/2014, 14:21
... seedlings, Tree Physiology 16 (1996) 957-962 [3] Buchmann N., Kao W.Y., Ehleringer J.R., Carbon dioxide concentrations within forest canopies - variation with time, stand structure, and vegetation ... Guehl J.M., Barigah T.S., Ehleringer J.R., Interseasonal comparison of CO, concentrations, isotopic composition, and carbon dynamics in an amazonian rainforest (French Guiana), Oecologia 110 (1997) ... 110 (1997) 120-131 [5] Bunce J.A., Short and long-term inhibition of respiratory carbon dioxide efflux by elevated carbon dioxide, Ann Bot 65 (1990) 637-642 [6] Bunce J.A., Stomatal conductance,...
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Báo cáo y học: "Effect of Hyperbaric Oxygen Therapy on whole blood cyanide concentrations in carbon monoxide intoxicated patients from fire accident" docx
Ngày tải lên :
13/08/2014, 23:20
... the three groups of patients See Table WB-CN concentrations before and after HBO differ significantly in the three groups of patients See Table Lactate concentrations in plasma before and after ... N = 12 12.5 μmol/L 1.1 μmol/L 4.4 mmol/L 2.5 mmol/L 25.9% 2.9% Mean WB-CN, lactate and carbon monoxide concentrations before and after HBO therapy in all three groups N = number of patients Case ... patients in this report We were not able to detect any differences in WB-CN concentrations before and after HBO Nor did the WB-CN concentrations differ significantly in the two groups This does not mean...
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Effect of changes in dissolved oxygen concentrations on the spatial dynamics of the gulf menhaden fishery in the northern gulf of mexico
Ngày tải lên :
04/09/2015, 08:12
... 2014 ISSN: 1942-5120 online DOI: 10.1080/19425120.2014.949017 ARTICLE Effect of Changes in Dissolved Oxygen Concentrations on the Spatial Dynamics of the Gulf Menhaden Fishery in the Northern Gulf ... University, 1355 Oxford Street, Halifax, Nova Scotia B3H 4R2, Canada Abstract Declines in dissolved oxygen (DO) concentrations in aquatic environments can lead to conditions of hypoxia (DO ≤ mg/L), ... predictions of bottom DO concentrations and associated depths, which were used as 226 LANGSETH ET AL environmental covariates in our analysis Daily predictions of DO concentrations in the northern...
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Sự chuyển hóa carbon
Ngày tải lên :
10/10/2012, 10:42
... ý gọi ribulose biphosphate carboxylase/ oxygenase, hay rubisco, thực bước carboxyl hóa cố định carbon Rubisco enzyme phức tạp mà điều chỉnh cao trình bày thành hoạt động riêng biệt: carboxyl ... 2-carboxy-3-ketoarabinitol-1,5-bisphosphate, theo sau đứt gãy tự phát thành phân tử PGA, phân tử mà chứa phân tử carbon mà nhận lấy từ CO2 từ không khí (hình 9.6) Trước rubisco trở thành hoạt động xúc tác, lysine...
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Báo cáo y học: "A folate-rich diet is as effective as folic acid from supplements in decreasing plasma homocysteine concentrations"
Ngày tải lên :
02/11/2012, 11:12
... supplements for lowering plasma tHcy concentrations A high percentage of patients with CAD has hyperhomocysteinemia [17] and low folate intake with ensuing low folate serum concentrations is the main cause ... homocysteine concentrations in the Third National Health and Nutrition Examination Survey (1991-1994): Population reference ranges and contribution of vitamin status to high serum concentrations ... homocysteine concentrations: a randomized trial Am J clin Nutr 1999;69(1):99-104 Int J Med Sci 2005 62 24 Riddell LJ, Chisholm A, Williams S, Mann JI Dietary strategies for lowering homocysteine concentrations...
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