Fouling and accumulation of dissolved organic matter in membrane bioreactors

... for an in- depth understanding of the underlying mechanisms governing DOM accumulation in MBR systems Chapter 1-Introduction Finally, it is worth noting that DOM fouling and accumulation in MBR ... serious fouling in MBR systems The relative importance of DOM in MBR fouling was also theoretically investigated The role of DOM was examined for membrane fouling in...

Ngày tải lên: 14/09/2015, 11:16

... uptake and degradation of organic matter by microorganisms, then DOM should play a key role in the stabilisation and destabilisation of soil organic matter, and thus, in C dynamics and C pools of soils ... reserved Keywords: Bioavailability; Biodegradation; Dissolved organic matter; DOC Introduction In the past 10 years, much progress has been made in the...

Ngày tải lên: 15/03/2014, 23:22

... Biodegradability of zinc binding sites in DOM of WWTP effluent in river water Fig shows the variation of DOC, UV254 and SUVA during the incubation of DOM in WWTP effluent with river water, where river water ... out for river water and river water spiked with DOM from WWTP effluent to evaluate the biological alteration of zinc complexation ch...

Ngày tải lên: 05/09/2013, 10:15

... degradation Accordingly, the influence of phosphorus concentration on the biodegradation of DOM was discussed in this research, because the phosphorus concentration in Lake Biwa has been decreasing ... DP was in the range of 0.006 to 0.007 mgP/L Effect of biodegradation activity change on DOM concentration in Lake Biwa Effect of biodegradatio...

Ngày tải lên: 05/09/2013, 10:17

... with incubation time In other word, the adsorption capacity of PAC increased with increase in the amount of organic carbon on PAC The adsorption capacity of PAC after 4th incubation was almost the ... of organic carbon on PAC after each incubation Figure Figure shows the adsorption isotherm of new PAC, PAC in the aeration tank, and PAC after...

Ngày tải lên: 05/09/2013, 08:40

... three subtropical forests in a region of South China under high air pollution, to investigate how deposited N is processed and examined the importance of DON in N budget The precipitation DIN input ... measurements but including also analysis of dissolved organic N (DON) input in bulk and wet-only precipitation 4138 BGD 4, 4135–4171, 2007 Input- output...

Ngày tải lên: 23/03/2014, 00:20

... correlations also exist for the partitioning of FA; however, there is little dependency of the partitioning of Hyd on pH The results for these two soils are representative of the other 407 16 soils tested ... pH values Within soils, the partitioning of FA and HA correlates with the system equilibrium pH The partitioning of FA and HA as a function of pH va...

Ngày tải lên: 15/03/2014, 23:22

... animal origin and 70o/o vegetable origin grinding machine and mixed with municipal sewage sludge follow ratio three part of organic waste by volume and one part of municipal sewage sludge by volume ... research, focus on accumulation and transportation of selected heavy metals in thermophilic anearobic co-digestion of municipal sewage sludge...

Ngày tải lên: 24/06/2015, 08:16

... determination of rate constants of initiator, promoter and inhibitor in water ozonation The new Rct expression and the new method for the determination of rate constants of initiator, promoter and inhibitor ... ibuprofen was removed only in the second Rct stage In condition 1, ibuprofen was added at the beginning when ozonation was initiated...

Ngày tải lên: 09/09/2015, 10:08

... from farmland, water treatment equipment containing wood charcoal was devised to enable the charcoal to remove organic matter, nutrients and heavy metals in the drainage from a paddy field, and ... organic matter, nutrients, and heavy metals in a test paddy field was investigated The following results were obtained: (1) The TOC, TN, TP, Cr, Fe and Pb i...

Ngày tải lên: 05/09/2013, 09:38

... 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 ... particulate matter did an increase in it During the chlorination reactions, part of the particulate matter was converted to dissolved matter, leading to an increase of disso...

Ngày tải lên: 16/03/2014, 00:07

... Responses in soil organic matter content at - 22 and 22 - 55 cm soil layers in the sandy soil under cassava cultivation at 15 months after planting, according to fertilisation mode during the consecutives ... 0-22 22-55 Soil layers (cm) Figure Responses in soil cation exchange capacity at - 22 and 22 - 55 cm soil layers in the sandy soil under cassava cu...

Ngày tải lên: 23/03/2014, 21:20

... presence of both the PsbL and PsbJ subunits It remains to be investigated whether the PsbL and/ or PsbJ proteins offer a direct docking site for PsbP and PsbQ or whether PsbL and PsbJ only modulate the ... more intrinsic core protein than PsbJ in the structural hierarchy of PSII Stable PSII core dimers were formed despite the absence of PsbJ, wher...

Ngày tải lên: 30/03/2014, 13:20

... are maintained The main objective of this research was to examine the effect of harvesting and slash management on mineralization of soil organic matter in a forest soil intensively managed In ... Sparling G.P., Burke C.M., Smith C.T., Microbial biomass C and N, and mineralizable-N, in litter and mineral soil under Pinus radiata on a coastal sand: influence of...

Ngày tải lên: 08/08/2014, 14:21

... growth conditions Seeds of maritime MAGREF) pine (P pinaster) (INRA-CEgerminated on natural peat for germination, 60 seedlings were were month After moved into L pots filled with coarse sand in an ... second mechanism may be operative in this case In conclusion, phosphorus deficiency reduced both growth and photosynthesis of 1-year-old maritime pine seedlings...

Ngày tải lên: 08/08/2014, 18:21