source production and fractions of dissolved organic matter

... Biodegradation; Dissolved organic matter; DOC Introduction In the past 10 years, much progress has been made in the understanding of dissolved organic matter (DOM) functions and dynamics in soils ... denitrification potential and fractions of organic carbon in air-dried and field-moist soils Soil Biol Biochem 20, 737 – 741 Blaser, P., 1994 The role of natural organic matter in the dynamics of metals in ... studies of organic matter fractions in acid forest floor solutions Org Geochem 21, 51 – 66 Guggenberger, G., Kaiser, K., Zech, W., 1998 Mobilization and immobilization of dissolved organic matter...

Ngày tải lên: 15/03/2014, 23:22

... FOULING AND 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 ... Values of kinetic and stoichiometric parameters 123 xi LIST OF FIGURES Figure 2.1 Overview of pressure-driven membrane processes commonly used in water and wastewater treatment and dimensions of ... treatment and a summary of the main findings with respect to the characteristics and fouling behaviors of DOM based on model compounds or natural organic matter Chapter describes the materials and...

Ngày tải lên: 14/09/2015, 11:16

... concentration during and after the shock 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) ... The objective of this study is to clarify the effect of DOM and biofilm on the adsorption capacity of PAC in the aeration tank of PACT process Materials and methods 2.1 Operation of powdered activated ... 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

... affected by pH and solid and dissolved organic matter Environ Sci Technol 1997;31:1109 – 15 Temminghoff EJM, Zee SEATMVD, Haan FAMD Effects of dissolved organic matter on the mobility of copper in ... 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 ... Recoveries of the isolated FA, HA, and Hyd fractions were 100%, 107%, and 102%, respectively Fig shows the total concentrations and proportions of each of the DOC fractions in solution as a function of...

Ngày tải lên: 15/03/2014, 23:22

... 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 ... (2006) Comparison of zinc complexation properties 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) ... 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

... 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 ... Determinations of humic substances and other dissolved organic matter and their effects on the increase of COD in Lake Biwa, Anal Sci., 20, 159-164 Gurung T B and Urabe J (1999) Temporal and vertical ... Res Inst., 22, 161-170 (in Japanese) Hayakawa K and Takahashi M (2002) Behavior of dissolved organic matter in the northern basin of Lake Biwa and current situation related to COD increase, Annual...

Ngày tải lên: 05/09/2013, 10:17

... concentrations and fluxes of dissolved inorganic (DIN) and organic N (DON) in precipitation, throughfall, surface runoff and soil solution for three subtropical forests in a region of South China ... Jiang, N H., and Zhang, L D.: Soil physical and chemical analysis and description of soil profiles, Standards Press of China, Beijing, 1996 Lohse, A L and Matson, P.: Consequences of nitrogen additions ... leaching and throughfall DON input was only found in one of three forests (Fig 8b) This suggests that soil solution DON was influenced either by soil sources of DON (decomposition of litter and soil organic...

Ngày tải lên: 23/03/2014, 00:20

... V and Chen Y (2002) Cadmium Binding by Fractions of Dissolved Organic Matter and Humic Substances from Municipal Solid Waste Compost, Journal of Environment Quality,31, 1885-1892 Ministry of ... - Variations of reduction rate for (a) TOC, TN and TP, (b) Cr, Fe, Pb, and Zn, and diurnal variations of contact times during field test Table - Mean and standard deviation (SD) of the concentration ... SD: Standard 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...

Ngày tải lên: 05/09/2013, 09:38

... 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 ... Total nitrogen (Nt) and organic nitrogen (Norg) were calculated as the sum of Kjeldahl-N and NO3 N and as the difference between Nt and the inorganic nitrogen (sum of NH4+-N and NO3-N), respectively ... physical and 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...

Ngày tải lên: 23/03/2014, 21:20

Ngày tải lên: 14/11/2014, 06:07

... ibuprofen = 0.5 µM, pCBA = 0.5 µM and phosphate buffer = mM 77 Figure 5.2 O3 and · OH exposures for ibuprofen in the presence of 0, 2.0 and 4.0 mg/L of SRFA after different reaction times of (a) ... 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 ibuprofen, which ... 80 Table 5.2 Influences of SRFA on the removal of selected pharmaceutical and organic compounds 83 ix LIST OF FIGURES Figure 1.1 Reactions of ozone with the presence of foreign compounds acting...

Ngày tải lên: 09/09/2015, 10:08

... activities of Dr A.G.J Tacon, Fishery Resources Officer, Inland Water Resources and Aquaculture Service, FAO Fishery Resources Division, to help meet the needs of aquaculture workers of Member ... Standard enrichment for Great Salt Lake Artemia 4.4 Tank production and use of ongrown Artemia 4.4.1 Nutritional properties of ongrown Artemia 4.4.2 Tank production 4.4.2.1 Advantages of tank production ... Literature of interest CLADOCERANS, NEMATODES AND TROCHOPHORA LARVAE 6.1 Daphnia and Moina 6.1.1 Biology and life cycle of Daphnia 6.1.2 Nutritional value of Daphnia 6.1.3 Feeding and nutrition of Daphnia...

Ngày tải lên: 15/12/2013, 00:15

... These various aspects of the production, use and substitution of micro-algae in aquaculture will be treated within the limits of this chapter 2.2 Major classes and genera of cultured algal species ... BS, MR 2.3 Algal production 2.3.1 Physical and chemical conditions 2.3.2 Growth dynamics 2.3.3 Isolating/obtaining and maintaining of cultures 2.3.4 Sources of contamination and water treatment ... they assimilate inorganic carbon for conversion into organic matter Light is the source of energy which drives this reaction and in this regard intensity, spectral quality and photoperiod need...

Ngày tải lên: 15/12/2013, 00:15

... 3.7 Production and use of resting eggs For the mass rearing of rotifers as larval food the amictic way of reproduction (see 3.3.) should be favored However, when the interest is in production of ... the intensive production of rotifers are being applied worldwide The availability of large quantities of this live food source has contributed to the successful hatchery production of more than ... the profile of the spines and ornaments allow the determination of the different species and morphotypes (see 3.4.) The rotifers body is differentiated inTO three distinct parts consisting of the...

Ngày tải lên: 15/12/2013, 00:15

... outputs, not only in terms of survival, growth and success of metamorphosis of many species of fish and crustaceans, but also with regard to their quality, e.g reduced incidence of malformations, improved ... resulted in optimized and cost-effective applications of this live food in hatchery production 4.1.2 Biology and ecology of Artemia 4.1.2.1 Morphology and life cycle 4.1.2.2 Ecology and natural distribution ... production sources in America, Asia, Australia and Europe A knowledge of the characteristics (both genotypic and phenotypic) of a particular batch of cysts can greatly increase the effectiveness of its...

Ngày tải lên: 15/12/2013, 00:15

... content and hatchability Hatchability of cysts is largely determined by the conditions and techniques applied for harvesting, cleaning, drying and storing of the cyst material The impact of most of ... saving of over one third in the amount of Artemia cysts used, compared to the use of live nauplii Table 4.2.4 The proximate composition (in % of dry matter) of decapsulated Artemia cysts and instar ... function of the tank size and the density of cysts incubated Excessive foaming can be reduced by disinfection of the cysts prior to hatching incubation and/ or by the addition of a few drops of a...

Ngày tải lên: 15/12/2013, 00:15

... fast harvesting of large volumes of Artemia nauplii and allows complete removal of debris from the hatching medium This technique results in a significant reduction of labour and production costs ... of Artemia nauplii was identified in the late 1970s and early 1980s, when many fish and shrimp hatcheries scaled up their production and reported unexpected problems when switching from one source ... variability of 20:5n-3 (EPA) content in Artemia Values represent the range (area percent) and coefficient of variation of data as compiled by Léger et al (1986) Cyst source 20:5n-3 range Coefficient of...

Ngày tải lên: 15/12/2013, 00:15

... Enrichment of ongrown Artemia 4.4.2.8 Control of infections 4.4.2.9 Harvesting and processing techniques 4.4.2.10 Production figures and production costs 4.4.2.1 Advantages of tank production and tank ... behavior of Artemia by affecting the filtration rate, ingestion rate and/ or assimilation: including the quality and quantity of the food offered, the developmental stage of the larvae, and the ... leaching of body fluids (See also 4.5.7.1) 4.4.2.10 Production figures and production costs Figure 4.4.14 provides a summary of average production data expressed as Artemia survival and length,...

Ngày tải lên: 15/12/2013, 00:15

... also an expensive and labour intensive job COMBINATION OF ORGANIC AND INORGANIC FERTILIZERS A common practice is to use a combination of inorganic and organic fertilizers While inorganic fertilizers ... Liquid ORGANIC FERTILIZERS With the appearance of inorganic fertilizers the use of organic fertilizers has been questioned In Table 4.5.4 we summarize advantages and disadvantages of organic ... during storage and/ or to deactivate diapause ® removal of light and heavy debris in different size range of cysts ® removal of heavy debris (e.g sand, stones, high dens organic matter) ® temporary...

Ngày tải lên: 15/12/2013, 00:15

... Literature of interest 6.1 Daphnia and Moina 6.1.1 Biology and life cycle of Daphnia 6.1.2 Nutritional value of Daphnia 6.1.3 Feeding and nutrition of Daphnia 6.1.4 Mass culture of Daphnia 6.1.5 Production ... intensity, ) and biota (phytoplankton and copepod production, number of predators, bacterial turn-over, regeneration of nutrients from copepods and fish larvae) in such a way that the production of one ... nauplius and copepodite stages of copepods; · 300 and 500 µm for small water fleas and smaller species of cyclopoid copepods; · 700 µm for adult water fleas of the Daphnia genus, large species of cyclopoid...

Ngày tải lên: 15/12/2013, 00:15