... 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 ofdissolvedorganicmatter (DOM) on adsorption capacity of PAC ... other dissolvedorganic 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 ... amount oforganic carbon was indicator as the amount of biofilm developed on PAC shows the amount oforganic carbon on PAC after each incubation Figure Figure shows the adsorption isotherm of new...
... (20360239) of Japan Society for the Promotion of Science (JSPS) REFERENCES Brooks M L., Meyer J S and Boese C J (2007) Toxicity of copper to larval Pimephales promelas in the presence of photodegraded ... variation of labile Zn during the incubation revealed a slight increment of the labile Zn concentration (from 2.1 µg/L to 2.5 µg/L) in the sample after month of incubation Decline of total ambient ... seems persistent in receiving waters of urban environment It may be important to study the long-term biological alteration oforganicmatter for the prediction of heavy metal speciation in bay or...
... particulate organicmatter did not affect CODMn, the possibility of accumulation ofdissolvedorganicmatter (DOM) is pointed out (Imai, 2002) On the other hand, Takahashi (1999) reported that dissolved ... threshold of DP for biodegradation was in the range of 0.003 to 0.004 mgP/L and biodegradation activity dropped to half of the maximum value when DP was in the range of 0.006 to 0.007 mgP/L Effect of ... Behavior oforganicmatter in Lake Biwa, Annual Rep Lake Biwa Res Inst., 22, 161-170 (in Japanese) Hayakawa K and Takahashi M (2002) Behavior ofdissolvedorganicmatter in the northern basin of Lake...
... Production of refractory dissolvedorganicmatter by bacteria Science 292, 917 – 920 Oikari, A., Kukkonen, J., Virtanen, V., 1992 Acute toxicity of chemicals to Daphnia magna in humic waters Sci Total ... these reactors are the release of DOM into the solution and the adsorption of DOM onto the biofilms Furthermore, it seems impossible to determine the pool sizes and the residence times of a rapidly ... dynamics ofdissolvedorganicmatter in soils: a review Soil Sci 165, 277 – 304 Kalbitz, K., Schmerwitz, J., Schwesig, D., Matzner, E., 2003 Biodegradation of soil-derived dissolvedorganic matter...
... fractionation and characterization of the organicmatter allows comparisons to be made between soils both rich and poor in solid phase organicmatter We have not made additions to the soils; neither trace ... metal concentrations nor organicmatter contents have been altered This work contributes to the mounting evidence that illustrates the importance of the role oforganicmatter in metal mobility ... 2002) Dissolved natural organicmatter 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...
... ACCUMULATION OFDISSOLVEDORGANICMATTER IN MEMBRANE BIOREACTORS LIANG SHUANG (B Eng., Qingdao Technological University) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF CIVIL ... Since the concentration of DOM is normally several orders of magnitude less than that of MLSS, its contribution to the total filtration resistance is often intuitively supposed to be insignificant ... shown to be inhibitory to the metabolic activity of activated sludge and also exert a negative impact on membrane permeability due toorganic fouling Huang et al (2000) investigated the behavior of...
... sediments Bottom sediments of lakes and impoundments are often major sinks and sites of eventual burial of PTOCs Distribution patterns of PTOCs in lake bottom sediments provide clues to sites of maximum ... Transport and fate of persistent toxic chemicals in aquaticecosystems 23 bottom sediment cores have been of great value in revealing long-term historical trends in inputs of PTOCs to the system Example ... carbon content of only some % or less However, some of this organic content can be in the form of thin organic coatings on the mineral substrates In fact, partitioning of PTOCs onto aquatic particulates...
... OUT points in Fig (b) Concentrations of total organic carbon (TOC), - 11 - Journal of Water and Environment Technology, Vol 7, No 1, 2009 total nitrogen (TN), total phosphorous (TP) and heavy metals ... 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 to 1.47 at ... considered to be the reason for the high adsorption rate attributed to the pure surface of charcoal The reduction rate of TOC in this test was lower than that of the batch test because the TOC average...
... indicated that DIN and DON might have different sources −1 −1 at our site Dissolvedorganic 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, ... spring of 2003 to collect soil solutions Each lysimeter was connected to a L bottle using the steep slope of the sites to facilitate sampling Previous study showed that more than 70% of the fine ... 2006) Forest ecosystems have been shown to vary in their responses to increased N deposition The timing and magnitude of response are thought to depend largely on the nutrient status of the forest...
... soil organicmatter Effects of management on soil organicmatter 173 173 173 175 175 175 175 177 184 185 XI1 CONTENTS Effect of long term cropping Effect of ... distribution oforganic sulfur in soil 275 Forms oforganic sulfur 276 278 Amount and distribution oforganic sulfur 279 Effect of soil forming ... underestimated According to Bohn (1976), the decay of soil organicmatter provides the largest CO, input into the atmosphere It is true that deeper C deposits in the form of marine organic detritus,...
... collected using the bottletop dispenser at designated time for a period of up to 30 for the measurements of ozone, pCBA and ibuprofen To stop further degradation of pCBA and ibuprofen, ozone was quenched ... The aims of this study were to develop a new method to quantify these different reaction rate constants of NOM in water ozonation and to study their influences on the removal of ibuprofen, a commonly ... be used to determine the different rate constants of NOM was developed With the addition of an external inhibitor (tert-butanol), the rate constants of NOM as the initiator and inhibitor can...
... presence oforganicmatter 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 ... = Total Organic Carbon - 31 - Journal of Water and Environment Technology, Vol 7, No 1, 2009 Laboratory study Laboratory-scale AIRU was designed and tested under variable dosages oforganic matters ... oxidation oforganicmatter because the arsenate/arsenite oxidation/reduction potential is +135 mV (Oremland and Stolz, 2003) Organicmatter is ubiquitous in natural waters and typically found at TOC...
... extraction (Marker et al 1980) Phytoplankton and zooplankton samples were collected twice a month from March to November 1999 from the water surface Phytoplankton with unfiltered water were fixed ... with a glutaraldehyde solution Samples of zooplankton were collected using a plankton net (NXX25) and fixed in the same manner as for phytoplankton Plankton genera were identified and counted ... than 98% of TWW during the surveillance period Total weight of each species and its ratio to TWW for 10 dominant species are shown in Table As a result of the observations, seasonal change of TWW...
... concentrations of the two reactors The maximum nitrogen conversion rate of each reactor at the influent DO of about 0.2 mg/L was set to an anammox activity value of 1.0, and for the other concentrations of ... necessary primarily to mix the influent and to remove the nitrogen gas bubbles that formed on the surfaces of the gel carriers HRT was set to hours The to in the reactor was monitored and adjusted ... conversion rates over time of two reactors In reactor 1, the nitrogen conversion rate had decreased from 2.9 to 1.3 kg-N/m3/d when influent DO of mg/L had been fed into reactor After that, the DO...
... 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 organicmatter and ... in CSFW absorbs and stores OM several years This accumulation potentially leads to a decline of the filter ability of the constructed wetland The objective of this study is to survey the vertical ... of OM in terms of interpolated contour graphics at three depths 20 cm, 50 cm and 80 cm The differences in distribution of OM contents among side cross sections are low Fig 3: Contour graphs of...
... design and manufacture of “green” chemicals in the future Sources and Input ofOrganic Pollutants to the Environment 2.1 Diffusive versus Point SourcesSourcesof contaminants to the environment ... pathways oforganic anthropogenic chemicals in ecosystems at different spatial scales, ranging from local to global with an emphasis on the use of molecular markers to study such pathways Sourcesof ... parts of the world today, it is important to develop techniques to quantify their fate and transport pathways It is also necessary to develop tools that can track contaminant pathways of non-POPs,...
... (1.2)) In aquatic ecosystems, it is reasonable to assume that the body temperature of an ectotherm is equal to water temperature Thus, coexisting species of prokaryotes, phytoplankton, protists, ... roles of different kinds of organisms in the flux and storage of elements in ecosystems The total biomass per unit area, W, is simply the sum of the body mass of all individuals For organisms of ... but in ectotherms it tends to be of the order of 50% Consequently, rates of wholeorganism biomass production are predicted to scale according to Eq (1.2), with an allometric exponent of 3/4, the...
... kinase; it was shown to be localized in the mitochondrial matrix and to be important to several NADPH-requisite mitochondrial processes, e.g resistance to a broad range of oxidative stress, respiration, ... initiation in E coli was inserted upstream of the start codon of YEF1 (Table 5) The use of pET-DEST42 enabled us to fuse a V5 epitope and a His6 tag to the C-terminal of Yef1p E coli BL21(DE3) was transformed ... glucose-6-phosphate and phosphoTable Purification of Yef1p Total protein (mg) Cell extract DEAE–Toyopearl Butyl-Toyopearl Ni–chelate AF Toyopearl Total activity (U) Yield (%) Specific activity (UÆmg)1)...