algal sources of dissolved organic matter
Effect of dissolved organic matter (DOM) and biofilm on the adsorption capacity of powdered activated carbon in activated sludge
... loading of 3,5-DCP onto PACT and control reactors - 252 - Journal of Water and Environment Technology, Vol.1, No.2, 2003 3.2 Effects of dissolved organic matter (DOM) on adsorption capacity of PAC ... 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 shows the adsorption isotherm of new ... other dissolved organic matters (DOM) and biofilm attached onto PAC However, it is not clear that the effect of DOM and biofilm attached onto PAC were decrease in adsorption capacity of PAC in the...
Ngày tải lên: 05/09/2013, 08:40
Biological Alteration of Zinc Complexation Characteristics of Dissolved Organic Matter in Domestic Wastewater Treatment Plant Effluent under River Water Environment
... press) Cheng T and Allen H E (2006) Comparison of zinc complexation properties of dissolved natural organic matter from different surface waters, Journal of Environmental Management, 80, 222-229 Ma ... Characterization of isolated fractions of dissolved organic matter from natural waters and a wastewater effluent, Water Research, 35 (4), 985-996 Sarathy V and Allen H E (2005) Copper complexation by dissolved ... 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...
Ngày tải lên: 05/09/2013, 10:15
Influence of Phosphorus Concentration on the Biodegradation of Dissolved Organic Matter in Lake Biwa, Japan
... 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 ... Behavior of organic matter in Lake Biwa, Annual Rep Lake Biwa Res Inst., 22, 161-170 (in Japanese) Hayakawa K and Takahashi M (2002) Behavior of dissolved organic matter in the northern basin of Lake ... Prefecture (2010) Environment of Shiga Prefecture 2009 (White Paper of Environment), Shiga Prefecture, Otsu, Japan (in Japanese) Takahashi M (1999) Behavior of dissolved organic matter, Annual Rep Lake...
Ngày tải lên: 05/09/2013, 10:17
Controls of bioavailability and biodegradability of dissolved organic matter in soils
... dynamics of dissolved organic matter in soils: a review Soil Sci 165, 277 – 304 Kalbitz, K., Schmerwitz, J., Schwesig, D., Matzner, E., 2003 Biodegradation of soil-derived dissolved organic matter ... cycling of high-molecular-weight dissolved organic matter in the ocean Nature 369, 549 – 552 Amon, R.M.W., Benner, R., 1996 Bacterial utilization of dissolved organic matter Limnol Oceanogr 41, 41 ... effect of 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...
Ngày tải lên: 15/03/2014, 23:22
Correlation of the partitioning of dissolved organic matter fractions with the desorption of cd
... Hathhorn WE Enhanced mobility of Pb in the presence of dissolved natural organic matter J Contam Hydrol 1997; 29:59 – 80 Karlik B Liming effect on dissolved organic matter leaching Water Air Soil ... 2002) Dissolved natural organic matter has also been implicated in preventing the sorption of Pb onto a sandy soil (Jordan et al., 1997) Further analysis of the data reveal that the presence of ... Mobility of cadmium-109 and zinc-65 in soil influenced by equilibration time, temperature and organic matter J Environ Qual 1999;28:1742 – 50 Andersson S, Nilsson SI, Saetre P Leaching of dissolved organic...
Ngày tải lên: 15/03/2014, 23:22
Fouling and accumulation of dissolved organic matter in membrane bioreactors
... ACCUMULATION OF DISSOLVED ORGANIC MATTER IN MEMBRANE BIOREACTORS LIANG SHUANG (B Eng., Qingdao Technological University) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF CIVIL ... transport mechanisms of retarded convection and dispersion of DOM through a porous membrane can be a better explanation for DOM accumulation in MBR systems Keywords: Dissolved organic matter; Membrane ... potential of DOM for GVWP and GVHP membranes .66 Table 4.4 Fouling potential of fractional components of DOM in MBR3 at DOC concentration of mg/L .74 Table 5.1 Typical characteristics of influent...
Ngày tải lên: 14/09/2015, 11:16
Removal of Nutrients, Organic Matter and Heavy Metals from Paddy Field Drainage by Charcoal
... 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 the structure of this equipment ... Preparation of charcoal from Cryptomeria and Chamaecyparis and their properties Tanso, 160, 247–254 Kaschl A., Romheld V and Chen Y (2002) Cadmium Binding by Fractions of Dissolved Organic Matter ... Shiratani E., Yoshinaga I., Hitomi T., Hamada K and Takaki K (2007a) Characteristics of the adsorption of dissolved organic matter by charcoal carbonized at difference temperatures, Japanese Agricultural...
Ngày tải lên: 05/09/2013, 09:38
Input and output of dissolved organic and inorganic nitrogen in subtropical forests of South China under high air pollution docx
... was influenced either by soil sources of DON (decomposition of litter and soil organic matter, plant exudates, fine-root and mycorrhizal turnover, and the waste products of macro and microorganisms), ... 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 ... indicated that DIN and DON might have different sources −1 −1 at our site Dissolved organic N input amounted to 17.8 kg N yr , accounting −1 for 36% of total dissolved N (TDN) input (47.6 kg N in 2005,...
Ngày tải lên: 23/03/2014, 00:20
chemistry of soil organic matter
... soil organic matter Effects of management on soil organic matter 173 173 173 175 175 175 175 177 184 185 XI1 CONTENTS Effect of long term cropping Effect of ... distribution of organic sulfur in soil 275 Forms of organic sulfur 276 278 Amount and distribution of organic sulfur 279 Effect of soil forming ... sequence of events appears to be HA - FA , EXTRACTION OF HUMIC SUBSTANCES The organic matter content of soils may range from less than 0.1% in desert soils to close to 100.0% in organic soils In inorganic...
Ngày tải lên: 30/05/2014, 22:57
phenanthrene sorption desorption by geosorbent role of soil organic matter and reactive mineral characteristics
Ngày tải lên: 14/11/2014, 06:07
Kinetics of natural organic matter as the initiator, promoter and inhibitor in water ozonation and its influences on the removal of ibuprofen
... the variations of pH value in the end of experiments were within ± pH unit 0.1 2.4.3 The influences of NOM on the degradation of ibuprofen by ozonation In the experiments of ibuprofen degradation, ... NOM ON THE REMOVAL OF IBUPROFEN DURING WATER OZONATION 74 5.1 Modeling the influences of NOM on the degradation of ibuprofen by ozonation 74 5.2 Application of the model to other ... influences of NOM on the removal of ibuprofen in the presence of carbonate alkalinity The experimental results and model simulation revealed that the presence of NOM generally enhanced the removal of...
Ngày tải lên: 09/09/2015, 10:08
Leaching of arsenic in response to organic matter contamination in groundwater treatment practice
... days The microbial decomposition of organic matter would most likely happen in the inoperative condition of the AIRU In the biodegradation process of organic matter, the aerobic oxidation is ... presence of organic matter in AIRU feed water was investigated under dosage-response observations in multiple sets of laboratory reactors In case of simulated wastewater organic contaminations of 15 ... analyses of the field water samples identified that most of the groundwater sources had significant organic contamination (Table 2) In AIRUs (I~IV), in spite of having adequate iron concentrations of...
Ngày tải lên: 05/09/2013, 09:38
Tài liệu Organic matter distribution of the root zone in a constructed subsuface flow wetland pptx
... the existing of micro-organisms in the wetland system Composed organic matters synthesize dark, amorphous, colloidal mass, called humus Humus is the active component of soil organic matter and ... leads to a decline of the filter ability of the constructed wetland The objective of this study is to survey the vertical and horizontal distribution of the OM in sand bed of the experimental ... ================================================================================ where OM - organic matters in present (%); - weight of cup (gr); Mc Ms - weight of dried sand sample (gr) by drying at 110 °C in hours; Msc - weight of sand and cup after combusting...
Ngày tải lên: 24/01/2014, 00:20
Effect of chlorine on adsorption ultrafiltration treatment for removing natural organic matter in drink2
... mineralization of NOM, which reduced the sorption capacity of NOM The conversion of particulate matter to dissolved matter by chlorination should contribute to an increase of carbon content in the dissolved ... NTU of colloidal particles from river water These results implied that during chlorination the structure of dissolved NOM was modified, leading to a decrease of UV absorbance, but some organic matter ... whereas the permeate flux was independent of chlorination when colloidal particles were removed prior to UF Although a change of the nature of dissolved organic matter was obvious during chlorination,...
Ngày tải lên: 16/03/2014, 00:07
Effects of cattle and poultry manures on organic matter content and adsorption complex of a sandy soil under cassava cultivation (Manihot esculenta, Crantz) doc
... manures which has three roles of organic matter sources, of protection of the soil against erosion and of increase in the activity of earthworms which reduce water runoff (Hole et al., 2005; Parfitt ... mineralization processes of the organic matter of the soil are intense (Thuriès et al., 2000) This trend is observed because of the usual greater microbial activities associated due to organic matter accumulation ... chemical (carbon, nitrogen and organic matter content) properties Particles size distribution was measured after oxidation of the organic matter with hydrogen peroxide (H2O2) of a soil sample sieved...
Ngày tải lên: 23/03/2014, 21:20
USES OF ORGANIC MATTER AND USES OF INORGANIC MATTER potx
... condition of inorganic matter is requisite for fertility? What is the fixed rule with regard to this? What is the condition of the alkalies in most of their combinations? Of the acids? What is said of ... aside from the growth of plants It is true that, in the case of the decomposition of organic matter in the soil, certain compounds are formed, known under the general names of humus and humic acid, ... breathing of animals and by the decomposition of various kinds of organic matter, which are exposed to atmospheric influences These gases are chiefly ammonia and carbonic acid, both of which are...
Ngày tải lên: 29/06/2014, 15:20
USES OF ORGANIC MATTER ppt
... condition of inorganic matter is requisite for fertility? What is the fixed rule with regard to this? What is the condition of the alkalies in most of their combinations? Of the acids? What is said of ... breathing of animals and by the decomposition of various kinds of organic matter, which are exposed to atmospheric influences These gases are chiefly ammonia and carbonic acid, both of which are ... heat produced by the decomposition of organic matter perceptible to our senses? Is it so to the growing plant? What is another important part of the organic matter in the soil? Carbon in the soil...
Ngày tải lên: 29/06/2014, 15:20
Báo cáo lâm nghiệp: "Effect of tree species substitution on organic matter biodegradability and mineral nutrient availability in a temperate topsoil" pptx
... impact of tree species, further studies are needed in a long-term incubation so as to determine the extent and dynamic of the biodegradation of organic matter, the nature of water extractable organic ... both the quality and quantity of organic matter have to be considered as main parameters controlling organic matter biodegradability and mineralization The decrease of WEOC observed for all soil ... effect of forest tree species substitution on (i) the biodegradability and mineralization of carbon and nitrogen of the soil organic matter, and (ii) consequently on the mobility and availability of...
Ngày tải lên: 07/08/2014, 16:20
Báo cáo khoa học: "Initial mineralization of organic matter in a forest plantation soil following different logging residue management techniques" pps
... and site preparation 809 Table I Soil properties of the organic and inorganic horizons under mature plantations Values given are means of profiles Organic horizon Depth C cm O N P S ... greater effect of temperature on CO2 fluxes than that of soil moisture [10, 11] The CO2 released from soils originated from two different sources, decomposition of litter and organic matter and respiration ... activity [34, 40] as well as organic matter decomposition and mineralization [7, 16, 21, 36] These changes particularly affect the actively cycling fractions of soil organic matter, which comprise...
Ngày tải lên: 08/08/2014, 14:21