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1

Novel Anammox membrane electro-bioreactor

Elektorowicz M., Hosseini S., Ibeid S.

Architecture Civil Engineering Environment

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2016

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Vol. 9, no. 3

123--128

EN

This paper presents an alternative method for nitrogen removal using modified membrane reactor. A novel Anammox submerged membrane electro-bioreactor (Anammox-SMEBR) was developed to enhance nitrogen removal from municipal wastewater. At lab scale a comparison between continuous flow MBE and Anammox-SMEBR reactors was conducted. The novel reactor removed nitrate and ammonia by over 95% and 97%, respectively. The removal was due to subsequent application of aerobic and anoxic conditions in the same reactor. On other hand, MBR was able to remove ammonia by 60 to 76%, while nitrates were produced. Simultaneously, COD and phosphorous removals in MBR were also lower than in Anammox-SMEBR.

PL

W artykule przedstawiono alternatywną metodę usuwania azotu z wykorzystaniem zmodyfikowanego reaktora membranowego. Technologia elektro-bioreaktora z membranami zanurzonymi i bacteriami anamoks (Anammox-SMEBR) została opracowany w celu zwiększenia efektywności usuwania azotu ze ścieków komunalnych. Wykonano porównanie wyników badań laboratoryjnych dla reaktora o ciągłym przepływie MBE oraz reaktora Anammox-SMEBR. Nowatorska metoda pozwala na usunięcie ponad 95% azotanów i 97% amoniaku dzięki zastosowaniu alternatywnych warunków tlenowych i beztlenowych w tym samym reaktorze. Równocześnie w reaktorze MBE uzyskano usunięcie amoniaku od 60 do 76%.Jednocześnie, stopień usunięcia węgla organicznego i fosforu w reaktorze MBR był również niższy niż w Anammox-SMEBR.

2

Optimal method to determine density of the scarce vegetation in dry desert : Variable Area Transect (VAT) applied to saxaul (Haloxylon ammodenderon) community

Kiani B., Tabari M., Fallah A., Hosseini S., Iran Nejad Parizi M.

Polish Journal of Ecology

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2011

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Vol. 59, nr 4

823-828

EN

The assessment of the density and cover of very scarce vegetation in dry habitats may create methodological problems. The variable area transect method (VAT) is a potential labour-saving sampling method and an alternative to plot (quadrate) method. It allows for density estimation without the time-consuming studies associated with other plot-less density estimators. We used the method in a natural shrubland of Saxaul (Haloxylon ammodenderon C.A.M) to define optimum parameters include transect width and individual.s number to which, distance is measured. Three transect widths were chosen, 10-m, 15-m and 20-m and distances to the 3rd, 4th and 5th individual. Transect width affected the estimation, a 20-m width transect had the least relative bias (-0.5%), and a 10-m width sampling had the greatest bias (-20%). However, all methods underestimated the plant density. The most accurate estimation was with the 3rd plant distance and 20-m transect. As the VAT method is more efficient per unit effort in the field than the quadrate methods, it can be recommended for rapid assessment of desert communities density (like saxaul) especially when plants are dispersed at random.

3

Growth and nutrition of restored Quercus castaneifolia C.A. Mey. versus native Celtis australis L. tree species : conservation perspectives of Hyrcanian forest (Iran)

Hosseini S., Raouhi-Moghaddam E., Ebrahimi E., Rahmani A., Tabari M.

Polish Journal of Ecology

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2010

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Vol. 58, nr 1

41-51

EN

For native species, mixed plantation systems seem to be the most appropriate for providing a broader range of options such as production, protection, biodiversity conservation and restoration. After 11 years, growth and nutrition and soil properties were examined in young plantation of two indigenous tree species in Hyrcanian forests of Iran. Quercus castaneifolia C.A. Mey. (as target species) and Celtis australis L. (as native component species) were planted in five proportions (100Q, 70Q:30C, 60Q:40C, 50Q:50C, 40Q:60C) in Noor, Iran. Diameter at breast height of individual Quercus trees and total basal area were affected by the presence of Celtis. Percent retranslocation of nutrients in Quercus followed in order: K> P> N. Leaf-litter fall production ranged from 4.10 to 6.14 t ha[^-1] year[^-1]. Ca and Mg concentrations in fully expanded leaves of Quercus, N and K retranslocation of Quercus, concentration of available P in soil were higher in some of the mixed plantations than in monoculture of Quercus. On the other hand, N concentration in fully expanded leaves of Quercus, N fluxes and soil C/N ratio were higher in monoculture of Quercus. Within the framework of this experiment, it appeared that production was maximized when these two species were grown together in the proportion of 60% Quercus and 40% Celtis.

4

The effects of Viscum album L. on foliar weight and nutrients content of host trees in Caspian forests (Iran)

Hosseini S.

Polish Journal of Ecology

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2007

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Vol. 55, nr 3

579-583

EN

Caspian forests (in the region it is called . Hyrcanian Forests) with an area of about 1.9 million ha are located in north of Iran, in southern coast of Caspian Sea. It is exclusive site for some valuable species like Populus caspica Bornm., Gleditsia caspica Desf., Parrotia persica Meyer. and Pterocaria fraxinifolia (Lam.) Spach., and the forests are dominated by Fagus orientalis Lipsky, Quercus castanifolia C. A. M., and Alnus glutinosa Gaertn. The mistletoe (Viscum album L.) effects on the area and weight of leaves of the two host tree species (hornbeam Carpinus betulus L. and ironwood Parrotia persica Meyer.) were studied on a number of severely infected individuals and control trees in selected parts of Hyrcanian Forests. Almost 100 leaves from infested and non-infested branches of two host species were sampled in order to compare with control trees (non-infested trees growing near each host). Results showed, that area and weight of leaves taken from infested branches of ironwood were significantly lower (at 95% confidence level) than leaf area and weight in non-infested branches and control trees. The amount of K, Mn and Zn was higher in infested branches of both species compared to control trees. However, the amount of nitrogen in infected branches of ironwood was lower. The results suggest that V. album may have detrimental effect on leaf structure, physiology and chemical composition of strongly infested host trees.

5

Dibenzopyridino-18-crown-6 as a highly selective and effective carrier for uphill transport of Pb2+ through a bulk liquid membrane

Zolgharnein J., Hosseini S., Sangi M. R., Dadfarnia S., Shamsipur M.

Chemia Analityczna

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2003

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Vol. 48, No. 1

65-75

EN

A chloroform membrane containing a dibenzopyridino-18-crown-6 carrier was found to be an excellent system for the uphill transport of Pb(2+). For P(2+)O4-(7), as a suitable metal cation acceptor in the receiving phase, and picrate, as a counter anion in the source phase, this system can selectively and efficiently transport Pb(2+) from aqueous solutions containing Pb(2+) and interfering cations, such as Ni(2+), Ca(2+), Hg+, Fe(3+), Zn(2+), Cd(2+) and Hg(2+). The amount of Pb(2+) transported across the liquid membrane after 2 h is (96.0š1.2)%.

PL

Chloroformowa membrana zawierająca dibenzopirydyno-18-koronę-6 jako nośnik okazała się doskonałym układem w transporcie jonów ołowiu. Stosując pirofosforan, P(2)O4-(7), jako dogodny akceptor jonów metalu w fazie otrzymującej, a jon pikrynianowy, jako przeciwjon w fazie wyjściowej, uzyskuje się selektywny, działający z dobrą wydajnością efektywny transport jonów ołowiu z roztworów wodnych zawierających takie potencjalnie interferujące jony, jak Ni(2+), Ca(2+), Ag(+), Fe(3+), Zn(2+), Cd2+ and Hg2*. Ilość ołowiu transportowana przez ciekłą membranę wynosi po 2 godz. (96.0š1.2)%.