analytical pyrolysis of organic matter

... 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

... 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

... 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 ... following rotation [25] High rates of soil loss due to organic matter depletion have been recorded [9] Although most of these effects appear to be due to mixing of soil layers and losses by erosion, ... 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

Ngày tải lên: 14/11/2014, 06:28

... terrigenous-derived organic matter ………………… 52 (a) Downcore profile of δ13Corg and C/N (wt % ratio); (b) Downcore profile of δ15N and C/N ratio ……………………………… 56 Crossplot of atomic C/N mass ratio to δ13C of plant ... preservation of organic matter due to high sedimentation rate is that the organic matter will have a shorter residence time in the water column (where remineralization of organic matter to CO2 ... differentiating sources of organic matter (from Meyers, 1994) …… 60 Crossplot of C/N to δ13C of sediments from Kowloon Bay (core MBH 54/2) ……………………………………………………………… 61 Overlay of the atomic C/N mass...

Ngày tải lên: 14/11/2014, 07:29

... is attributed to a combination of the hydrophobicity of the organics fraction, variation of membrane charge and tightness, and the extent of dissociation of the organics fractions with pH Ionic ... Rejection of Organics Fractions 71 4.2.1 Characteristics of the Secondary Effluent 71 4.2.2 Rejection of Organics Fractions by RO Process 73 4.2.3 Removal Efficiency of the RO ... REJECTION OF ORGANIC MATTERS BY RO/NF MEMBRANE BY SHAN JUNHONG (B.Sci Tsinghua Univ.) A THESIS SUBMITTED FOR THE DEGREE OF PHILOSOPHIAE DOCTOR DEPARTMENT OF CIVIL ENGINEERING NATIONAL UNIVERSITY OF...

Ngày tải lên: 16/09/2015, 15:23

... 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 ... 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 ... 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...

Ngày tải lên: 05/09/2013, 08:40

... 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 ... 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 ... results showed that 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...

Ngày tải lên: 05/09/2013, 09:38

... 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 ... bioleaching of arsenic, in the presence of organic matter, was observed under the inoperative condition of the laboratory-scale AIRU Subsequently the water samples were collected from the outlet of the...

Ngày tải lên: 05/09/2013, 09:38

... seems persistent in receiving waters of urban environment It may be important to study the long-term biological alteration of organic matter for the prediction of heavy metal speciation in bay or ... 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 ... of DOM of WWTP effluents and pre-incubated river water within the first week of incubation Slight DOC reduction (14%) was observed after one month of incubation In contrast to the results of the...

Ngày tải lên: 05/09/2013, 10:15

... 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 ... Kishimoto, 2008) As Matsui (1975) reported that particulate organic matter did not affect CODMn, the possibility of accumulation of dissolved organic matter (DOM) is pointed out (Imai, 2002) On the other ... reported that the addition of 2.5µM of phosphorus enhanced the growth of heterotrophic bacteria in the surface water of Lake Biwa, although the enhancement effect of phosphorus addition was inhibited...

Ngày tải lên: 05/09/2013, 10:17

... 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

... biodegradability of terrestrial DOM, i.e., the utilisation of organic compounds by soil microorganisms quantified by the disappearance of DOM or O2 or by the evolution of CO2 Methods for the determination of ... 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 forest ... Schulten, H.R., 1994 Formation and mobilization pathways of dissolved organic matter evidence from chemical structural studies of organic matter fractions in acid forest floor solutions Org Geochem...

Ngày tải lên: 15/03/2014, 23:22

... metal concentrations nor organic matter contents have been altered This work contributes to the mounting evidence that illustrates the importance of the role of organic matter in metal mobility ... 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 ... employed for fractionation and characterization of the organic matter allows comparisons to be made between soils both rich and poor in solid phase organic matter We have not made additions to the soils;...

Ngày tải lên: 15/03/2014, 23:22

... without 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 ... 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 ... functionalities Analyses of the effects of chlorination of raw water during adsorption and UF could also establish some correlation of NOM removal and membrane permeability with alteration of the physicochemical...

Ngày tải lên: 16/03/2014, 00:07

... 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

... 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

... 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

... Comparative study of decomposition rates of organic matter in temperate and tropical regions, Soil Science 68 (1949) 419–432 [40] Joergensen R.G., Organic matter and nutrient dynamics of the litter ... aim of the present work was to quantify and determine the temporal and spatial distribution of the organic matter and to establish the return of nitrogen in the southern climax beech forests of ... range of 92–169 Mg –1 , while [91] reported 102–136 Mg ha–1 in stands of 50–90 years of age The trunk is the part of the tree that most contributes to the total biomass This has a value of 75%...

Ngày tải lên: 08/08/2014, 14:21

... Introduction Materials and methods Quality of organic matter is of prime importance for the majority of the functional processes occurring in the soil of forest ecosystems The most important contribution ... basic source of energy, C, N, P, and other bioelements for the participating microflora and mesofauna of the soil, as well as a quantity of easily available nutrients [38] The aim of the present ... that these represent in the whole set of litter The importance of having knowledge of the amounts of each of these fractions is evident since the return of elements to the soil will follow different...

Ngày tải lên: 08/08/2014, 14:21