References
- Zhang , T. , Lin , Z. and Zhu , H. L. 1999 . Microbial flocculant and its application in environmental protection . J. Environ. Sci. , 11 : 1 – 12 .
- Zhang , Z. Q. , Lin , B. , Xia , S. Q. , Wang , X. J. and Yang , A. M. 2007 . Production and application of a novel bioflocculant by multiple-microorganism consortia using brewery wastewater as carbon source . J. Environ. Sci. , 19 : 667 – 673 . (doi:10.1016/S1001-0742(07)60112-0)
- Salehizadeh , H. and Shojaosadati , S. A. 2003 . Removal of metal ions from aqueous solution by polysaccharide produced from Bacillus firmus . Water Res. , 37 : 4231 – 4235 . (doi:10.1016/S0043-1354(03)00418-4)
- Lian , B. , Chen , Y. , Zhao , J. , Teng , H. H. , Zhu , L. J. and Yuan , S. 2008 . Microbial flocculation by Bacillus mucilaginosus: Applications and mechanisms . Bioresour. Technol. , 99 : 4825 – 4831 . (doi:10.1016/j.biortech.2007.09.045)
- Gong , W. X. , Wang , S. G. , Sun , X. F. , Liu , X. W. , Yue , Q. Y. and Gao , B. Y. 2008 . Bioflocculant production by culture of Serratia ficaria and its application in wastewater treatment . Bioresour. Technol. , 99 : 4668 – 4674 . (doi:10.1016/j.biortech.2007.09.077)
- Ghosh , M. , Pathak , S. and Ganguli , A. 2009 . Effective removal of Cryptosporidium by a novel bioflocculant . Water Environ. Res. , 81 : 160 – 164 . (doi:10.2175/106143008X325818)
- Ghosh , M. , Ganguli , A. and Pathak , S. 2009 . Application of a novel biopolymer for removal of Salmonella from poultry wastewater . Environ. Technol. , 30 : 337 – 344 . (doi:10.1080/09593330902732093)
- Salehizadeh , H. and Shojaosadati , S. A. 2001 . Extracellular biopolymeric flocculants – Recent trends and biotechnological importance . Biotechnol. Adv. , 19 : 371 – 385 . (doi:10.1016/S0734-9750(01)00071-4)
- Subramanian , S. B. , Yan , S. , Tyagi , R. D. and Surampalli , R. Y. 2010 . Extracellular polymeric substances (EPS) producing bacterial strains of municipal wastewater sludge: Isolation, molecular identification, EPS characterization and performance for sludge settling and dewatering . Water Res. , 44 : 2253 – 2266 . (doi:10.1016/j.watres.2009.12.046)
- Subramanian , S. B. , Yan , S. , Tyagi , R. D. , Surampalli , R. Y. and Lohani , B. N. 2008 . Isolation and molecular identification of extracellular polymeric substances (EPS) producing bacterial strains for sludge settling and dewatering . J. Environ. Sci. Heal. A , 43 : 1495 – 1503 .
- Nomura , T. , Araki , S. , Nagao , T. and Konishi , Y. 2007 . Resource recovery treatment of waste sludge using a solubilizing reagent . J. Mater. Cycles Waste , 9 : 34 – 39 . (doi:10.1007/s10163-006-0169-2)
- Liu , W. J. , Yuan , H. L. , Yang , J. S. and Li , B. Z. 2009 . Characterization of bioflocculants from biologically aerated filter backwashed sludge and its application in dying wastewater treatment . Bioresour. Technol. , 100 : 2629 – 2632 . (doi:10.1016/j.biortech.2008.12.017)
- Yu , G. H. , He , P. J. and Shao , L. M. 2009 . Characteristics of extracellular polymeric substances (EPS) fractions from excess sludges and their effects on bioflocculability . Bioresour. Technol. , 100 : 3193 – 3198 . (doi:10.1016/j.biortech.2009.02.009)
- Yu , G. H. , He , P. J. , Shao , L. M. and He , P. P. 2008 . Stratification structure of sludge flocs with implications to dewaterability . Environ. Sci. Technol. , 42 : 7944 – 7949 . (doi:10.1021/es8016717)
- Vaxelaire , J. and Cezac , P. 2004 . Moisture distribution in activated sludges: A review . Water Res. , 38 : 2215 – 2230 . (doi:10.1016/j.watres.2004.02.021)
- Khanal , S. K. , Grewell , D. , Sung , S. and Van Leeuwen , J. 2007 . Ultrasound applications in wastewater sludge pretreatment: A review . Crit. Rev. Env. Sci. Technol. , 37 : 277 – 313 . (doi:10.1080/10643380600860249)
- Pilli , S. , Bhunia , P. , Yan , S. , LeBlanc , R. J. , Tyagi , R. D. and Surampalli , R. Y. 2011 . Ultrasonic pretreatment of sludge: A review . Ultrason. Sonochem. , 18 : 1 – 18 . (doi:10.1016/j.ultsonch.2010.02.014)
- He , P. J. , Yu , G. H. , Shao , L. M. and Zhu , Y. S. 2008 . Extracellular proteins, polysaccharides and enzymes impact on sludge aerobic digestion after ultrasonic pretreatment . Water Res. , 42 : 1925 – 1934 . (doi:10.1016/j.watres.2007.11.022)
- Xia , S. Q. , Zhang , Z. Q. , Wang , X. J. , Yang , A. , Chen , L. , Zhao , J. F. , Leonard , D. and Jaffrezic-Renault , N. 2008 . Production and characterization of a bioflocculant by Proteus mirabilis TJ-1 . Bioresour. Technol. , 99 : 6520 – 6527 . (doi:10.1016/j.biortech.2007.11.031)
- Kurane , R. , Toeda , K. , Takeda , K. and Suzuki , T. 1986 . Culture conditions for production of microbial flocculant by Rhodococcus erythropolis . Agr. Biol. Chem. , 50 : 2309 – 2313 . (doi:10.1271/bbb1961.50.2309)
- Chaplin , M. F. and Kennedy , J. F. 1994 . Carbohydrate Analysis , 2 , New York , NY : Oxford University Press .
- Bradford , M. M. 1976 . A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of proteindye binding . Anal. Biochem. , 72 : 248 – 254 . (doi:10.1016/0003-2697(76)90527-3)
- Sun , Y. D. , Clinkenbeard , K. D. , Clarke , C. , Cudd , L. , Highlander , S. K. and Dabo , S. M. 1999 . Pasteurella haemolytica leukotoxin induced apoptosis of bovine lymphocytes involves DNA fragmentation . Vet. Microbiol. , 65 : 153 – 166 . (doi:10.1016/S0378-1135(98)00286-7)
- APHA, AWWA, WEF . Americal Public Health Association/AmericanWaterWorks Association/Water Environment Federation . Washington , DC . Standard Methods for the Examination of Water and Wastewater ,
- Hua , I. and Hoffmann , M. R. 1997 . Optimization of ultrasonic irradiation as an advanced oxidation technology . Environ. Sci. Technol. , 31 : 2237 – 2243 . (doi:10.1021/es960717f)
- Tiehm , A. , Nickel , K. , Zellhorn , M. and Neis , U. 2001 . Ultrasonic waste activated sludge disintegration for improving anaerobic stabilization . Water Res. , 35 : 2003 – 2009 . (doi:10.1016/S0043-1354(00)00468-1)
- Yin , X. , Han , P. F. , Lu , X. P. and Wang , Y. R. 2004 . A review on the dewaterability of bio-sludge and ultrasound pretreatment . Ultrason. Sonochem. , 11 : 337 – 348 .
- Neis , U. , Tiehm , A. , Nickel , K. and Zellhorn , M. 2001 . Ultrasonic waste activated sludge disintegration for improving anaerobic stabilization . Water Res. , 35 : 2003 – 2009 . (doi:10.1016/S0043-1354(00)00468-1)
- Wang , F. , Wang , Y. and Ji , M. 2005 . Mechanisms and kinetics models for ultrasonic waste activated sludge disintegration . J. Hazard. Mater. , 123 : 145 – 150 . (doi:10.1016/j.jhazmat.2005.03.033)
- Grönroos , A. , Kyllonen , H. , Korpijarvi , K. , Pirkonen , P. , Paavola , T. , Jokela , J. and Rintala , J. 2005 . Ultrasound assisted method to increase soluble chemical oxygen demand (SCOD) of sewage sludge for digestion . Ultrason. Sonochem. , 12 : 115 – 120 . (doi:10.1016/j.ultsonch.2004.05.012)