Description: Description: Description: KTH Krans

Description: Description: Description: Department of Biotechnology
Environmental Microbiology

Publications

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Publications

2011

2011

 

Chuka Okoli, Andrea Fornara, Jian Qin, Muhammet S. Toprak, Gunnel Dalhammar, Mamoun Muhammed, and Gunaratna K. Rajarao. (2011) Characterization of Superparamagnetic Iron Oxide Nanoparticles and Its Application in Protein Purification. J. Nanosci. Nanotechnol. 11:11, 10201-10206

 

Okoli C., Boutonnet M., Mariey L., Jaras S. and Rajarao G. (2011) Application of magnetic iron oxide nanoparticles prepared from microemulsions for protein purification. J. Chem. Technol. & Biotechnol. 86:11, 1386-1393

 

Andersson S., Dalhammar G. and Kuttuva Rajarao G. (2011) Influence of microbial interactions and EPS/polysaccharide composition on nutrient removal activity in biofilms formed by strains found in wastewater treatment systems. Microbiological Research 166, 449-457

 

2010

 

2009

 

Andersson S., Dalhammar G., Land C.J. and Kuttuva Rajarao G. (2009) Characterization of extracellular polymeric substances from denitrifying organism Comamonas denitrificans. Applied Microbiology and Biotechnology 82:3, p. 535-543

 

Andersson S., Dalhammar G. and Kuttuva Rajarao G. (2009) Persistence and competition of denitrifying biofilms subjected to a natural wastewater flora. Vatten 65:2

 

2008

Sofia Andersson, Gunaratna Kuttuva Rajarao, Carl Johan Land, Gunnel Dalhammar (2008).
Biofilm formation and interactions of bacterial strains found in wastewater treatment systems. FEMS Microbiology Letters. Vol. 283 Issue 1 Page 83

Gunaratna KR, Garcia B, Andersson S and G. Dalhammar (2008) Screening and evaluation of natural coagulants for water treatment. Water Science & Technology: Water Supply, 7(5-6):19–25

Gunaratna K Rajarao, Charlotta Andersson, Kebreab A Ghebremichael and Gunnel Dalhammar 2008. Immobilization of coagulant protein for drinking water clarification In: Groundwater for sustainable and development, problem, perspectives, and challenges, eds; P Bhattacharya, AL Ramanathan, AB Mukherjee, J Bundschuh, D. Chandrasekharam, A.K. Keshari Routledge Taylor & Francis gp

Bulbul A, Bhattacharya P, Imamul Huq S.M and Gunaratna K.Rajarao. 2008. Bioremoval of arsenic by green algae In: Groundwater for sustainable and development, problem, perspectives, and challenges, eds; P Bhattacharya, AL Ramanathan, AB Mukherjee, J Bundschuh, D. Chandrasekharam, A.K. Keshari Routledge Taylor & Francis gp

Andersson S., Nilsson M., Dalhammar G. and Kuttuva Rajarao G. (2008) Assesment of carrier materials for biofilm formation and denitrification. Vatten 64:3, p. 201-207

 

2007

Marobhe, N.J., Dalhammar, G., Gunaratna, K.R. (2007) Simple and rapid method for purification and characterization of active coagulants from the seeds of Vigna unguiculata and Parkinsonia aculeata. Environmental Technology, 28, 671-681

2006

Ghebremichael KA,
Gunaratna KR, and Dalhammar G. 2006. Single-step ion exchange purification of the coagulant protein from Moringa oleifera seed. Applied Microbiol. Biotechnol. 70(5):526-32

Gunaratna K Rajarao, Charlotta Andersson, Kebreab A Ghebremichael and Gunnel Dalhammar. 2006. Immobilization of coagulant protein for drinking water clarification (submitted)

Guro Mork Johnsen, Gunaratna K Rajarao and Gunnel Dalhammar. 2006. Effects of carbon sources on phosphate uptake by denitrifying bacteria Comamonas denitrificans. IWA conference proceedings.

Gunaratna K Rajarao, Charlotta Andersson, Kebreab A.Ghebremichael and Gunnel   Dalhammar. 2006. Purification and immobilization of natural coagulant for water treatment. 2nd IGC conference proceedings.

Sofia Andersson, Fantahun Misganaw, Seyoum Leta and Gunnel Dalhammar (2006). Evaluation of nitrogen removal in a small-scale system for biological treatment of tannery wastewater. 7th Specialised Conference on small Water and Wastewater Systems proceedings.

Sofia Andersson and Gunnel Dalhammar, 2006. Bioaugmentation for enhanced denitrification in a lab-scale treatment system. The Second IASTED International Conference on advanced technology in the environmental field proceedings.

Larsdotter K. (2006) Wastewater treatnment with microalgae - a literature review. Vatten 62

Anna Norström, Gunnel Dalhammar and Natuschka Lee, 2006. Investigation of the microbial composition in the hydroponic step of a small treatment system for domestic wastewater with fluoricence in situ hybridization (FISH). IWA conference proceedings.

Kyambadde, J., Kansiime, F. and Dalhammar, G. (2006). Distribution and activity of ammonium-oxidizing bacteriain Nakivubo channel and wetland systems. Acta Hydrochim. Hydrobiolog 34 (1-2) on line

2005

Kyambadde, J., Kansiime, F. and
Dalhammar, G. (2005). Nitrogen and phosphorus removal in substrate-free pilot plant constructed wetlands with horizontal flow in Uganda. Water, Air, Soil Pollut.165(1-4) 37-59

Ghebremicahel KA, Gunaratna KR, Henriksson H, Brumer H and Dalhammar G. 2005. A simple purification and activity assay for coagulant protein from Moringa oleifera seed. Water Res. 39: 2338–2344.

Norström, A. (2005) A comparative study of six hydroponic wastewater treatment plants. Vatten 61(2): 95-104.

Ottoson, J., Norström, A. and Dalhammar, G. (2005) Removal of microorganisms in a small-scale hydroponics wastewater treatment system. Lett. Appl. Microbiol. 40(6): 443-447

Leta, S., Assefa, F. and Dalhammar, G. 2005. Enhancing biological nitrogen removal from tannery effluent by using the efficient Brachymonas denitrificans in pilot plant operations. World Journal of Microbiology and Biotechnology 21 (4) 545-552

2004

Larsdotter, K., Norström, A. and
Dalhammar, G. (2004) Theoretical energy requirements for maintenance of green plants in hydroponic wastewater treatment. Vatten 60: 187-191

Norström, A., la Cour Jansen, J. and Dalhammar, G. (2004). Energy savings versus year-round production in a small hydroponics system for wastewater treatment. Proceedings of the 6th Specialist Conference on Small Water and Wastewater Systems, Perth, Australia, 11-13 February.

Leta, S., Gumaelius, L., Assefa, F. and Dalhammar, G. 2004. Biological nitrogen and organic matter removal from tannery wastewater in pilot plant operations in Ethiopia. Appl. Microbiol. Biotechnol. DOI 10.1007/s00253-004-1715-2. (in press).

Ghebremicahel KA, Gunaratna KR, and Dalhammar G. 2004. Moringa oleifiera for simultaneous coagulation and disinfection in water purification.  57th Canadian Water Resources  Association Annual conference

Kyambadde, J., Kansiime, F.,  Gumelius, L. and Dalhammar, G. (2004). A comparative study of Cyperus papyrus and Mischanthidium violaceum-based constructed wetlands for wastewater treatment in a tropical climate. Water. Res. 38(2): 475-485

Leta, S., Gumaelius, L., Assefa, F. and Dalhammar, G. 2004. Identification of efficient denitrifying bacteria from tannery wastewaters in Ethiopia and a study of the effects of chromium III and sulphide on their denitrification rate. World J. Microbiol. Biotechnol. 20(4): 405-411.

Kyambadde, J., Kansiime, F.,  Gumelius, L. and Dalhammar, G. (2004).hydraulic loading, stability and water quality of Nakivubo wetland, Uganda. Afr. J. Aquat. Sci. 29(2):213-220

2003

Mbwele, L., Rubindamayugi, M., Kivaisi, A. and Dalhammar, G. (2003) Performance of a small wastewater stabilisation pond system in tropical climate in Dar es Salaam, Tanzania. Water Sci. Technol. 48(11-12): 187-191

Norström, A., Larsdotter, K., Gumaelius, L., la Cour Jansen, J. and Dalhammar, G. (2003). A small scale hydroponics wastewater treatment system under Swedish conditions. Water Science and Technology 48(11-12): 161-167

Larsdotter K., Söderbäck E. and Dalhammar G. (2003) Phosphorus removal from wastewater by microalgae in a greenhouse in Sweden. Paper for oral presentation at the IWA conference on Environmental biotechnology, Dec 2003, Malaysia 

Leta, S., Assefa, F. and Dalhammar, G. 2003. Characterization of tannery wastewater and assessment of downstream pollution profiles along Modjo River in Ethiopia. Ethiop. J. Biol. Sci. 2(2):157-168.

Eriksson M., Södersten E., Yu Z., Dalhammar G. and Mohn W. (2003). Degradation of polycyclic aromatic hydrocarbons at low temperature under aerobic and nitrate reducing condition in enrichment cultures from northern soil. Applied and Environmental Microbiology  Jan 2003 275-284

 

2010

2009

2008

2007

2006

2005

2004

2003

 

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Last updated: 2008-06-10