Promotion of biosurfactants on washing of PCBs from contaminated soil

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  • Abstracts / Journal of Biotechnology 136S (2008) S678S707 S687

    VII5-P-014

    Promotion of biosurfactants on washing of PCBs from contam-inated soil

    Hong Liua,, Zhou Shib, Naiyun Gaoa, Quan Sunb

    a School of Environmental Science and Engineering, State Key Lab-oratory of Pollution Control and Resources Reuse, Tongji University,Shanghai, Chinab Department of Water Science and Engineering, College of Civil Engi-neering, Hunan University, Changsha, China

    E-mail address: yuerrosy@gmail.cm (H. Liu).

    The effect of several kinds of biosurfactants solution on washingof polychlorinated biphenyls (PCBs) from contaminated soil wasinvestigated. The results show that the desorption of PCBs fromcontaminatedsoil is affectedby theconcentrationofbiosurfactants,reaction time and the ionic strength. Biosurfactants do not improvePCBs desorption fromcontaminated soilwhen their concentrationsare below or near their critical miHowever, biosurfactants could obefciency when the concentratiodesorbed amount of PCBs increafactants concentrations. There exregarding to theeffect of reaction titive inuence on washing of PCBindicate the high extract power oluted soil and potential use of biosof PCBs or other low-polarity org

    Keywords: Biosurfactant; PCBs (poing; Contaminated soil

    References

    Campfens, J., Mackay, D., 1997. Fugacity-complex aquatic food webs. Environ.

    Michael, J., Mann, 1999. Full-scale and pilo119136.

    Chu, W., Chan, K.H., 2003. The mechanismtem for hydrophobic and partial hydr8392.

    Cooper, D.G., 1986. Biosurfactants [J]. MicMulligan Catherine, N., 2005. Environmen

    iron. Pollut. 133, 183198.Jacob, L., et al., 1998. Biosurfactant (rh

    rhamnolipid-facilitated removal of cadow conditions. Environ. Sci. Technol

    doi:10.1016/j.jbiotec.2008.07.1592

    VII5-P-015

    Mechanism and performancewastewater with acid dyes by UA

    Li Xiu-Fena,b,, Wijetunga Somas

    a Lab of Environmental BiotechnolCivil Engineering, Jiangnan UniveJiangsu 214122, Chinab National key lab of Food Science anLihu Road 1800, Wuxi City, Jiangsu

    E-mail addresses: xi@jiangnan.euswije@yahoo.com (W. Somasiri),

    The aim of this paper was to invof colour and COD removal andacid dyes on the performance ofreactor with different COD levels

    ater. The experiments were conducted by mixing acid red 131,acid yellow 79 and acid blue 204. Acid red 131 and acid yel-low 79 were decolourized through the biodegradation while acidblue 204 was via adsorption onto microbial granules in upowanaerobic sludge blanket reactor, which were conrmed by theinspection of UVvis spectrum. The alkalinity and volatile fattyacids in anaerobic reactor were in the recommended range of10005000mgL1 and less than 250mgL1, respectively, duringthe whole operation. The specic methanogenic activity of anaer-obic granules was not considerably affected by the mixture ofacid dyes. COD removal increased as cosubstrate concentrationsamounted to3000mgL1.Over85%colour removalwasachievedat300mgL1 dye concentration. If organic loading in textile wastew-ater is not sufcient for the operation of upow anaerobic sludgeblanket system, it is essential to provide additional carbon source(bymixingwithotherwastewaters, for examplemunicipalwastew-ater).

    harbit69 (1heiro,s in a

    ., Braurds re

    D.S., Stexti

    186 (207. A3 froml. J. Co

    .1593

    ion b

    , Jiti

    Bioloy andalian

    yah

    waisolashowof cading7.0, 390%er phbolitstraide c

    ned a(8.0Pb2+

    iffereidedeC35celle concentration (CMC) values.viously enhance the desorption

    ns exceeded the CMC values. Theses with the increase of biosur-ist a washing balance time pointime. The ionic strengthhadapos-s from soil. The results obtainedf biosurfactants toward PCBs pol-urfactants for in situ remediationanic contaminated soils.

    lychlorinated biphenyls); Wash-

    based model of PCB bio-accumulation inSci. Technol. 31 (3), 577583.t-scale soil washing [J]. Hazard. Mater. 66,

    of the surfactant-aided soil washing sys-ophobic organics. Sci. Total Environ. 307,

    robiol. Sci. 3, 145149.tal applications for biosurfactants [J]. Env-

    amnolipid) sorption and the impact onmium from various soils under saturated

    . 32, 776781.

    of pollutant removal fromSB reactor

    iri a,b, Chen Jiana,b

    ogy, School of Environmental andrsity, Lihu Road 1800, Wuxi City,

    d Technology, JiangnanUniversity,214122, China

    d.cn (L. Xiu-Fen),jchen@jiangnan.edu.cn (C. Jian).

    estigate the primary mechanismcombination effects of differentupow anaerobic sludge blanketusing synthetic textile wastew-

    References

    Allgre, C., Moulin, P., Maisseu, M., Cdyeing efuents. J. Membr. Sci. 2

    Brs, R., Gomes, A., Ferra, M.I.A., Pindiazo dye decolourisation studie115, 5766.

    Brik, M., Schoeberl, P., Chamam, Bment of textile wastewater towaBiochem. 41 (8), 17511757.

    Schrank, S.G., Santos, J.N.R., Souza,of Vat Green 01 textile dye andPhotochem. Photobiol. A Chem.

    Vinod, K., Gupta, I.A., Vipin, K.S., 20tigo Blue 49 and Orange DNA1developed from a waste materia

    doi:10.1016/j.jbiotec.2008.07

    VII5-P-016

    Phenanthrene biodegradatand its crude extracts

    Yuanyuan Qu , Qiang Zhang

    School of Environmental andLaboratory of Industrial Ecologistry of Education, China), D116024, China

    E-mail address: yuanyuanqu@

    The purpose of this studybiodegradation by a newlycrude extracts. The resultsphenanthrene as sole sourceed as Burkholderia sp. accorthe optimal conditions (pH(100mgL1) was removedstrain AFF could tolerate high300mgL1. Two major metaHPLC/MS. It is proposed thatpathway. The activity of crufrom strain AFF was maintaiperature (1080 C) and pHwas inhibited by Co2+, Zn2+,activities were inhibited at dascorbic acid, while acryl ameffect on enzymeactivity. Cruwith molecular mass nearlysis., F., 2006. Treatment and reuse of reactive2), 1534.H.M., Goncalves, I.C., 2005. Monoazo andmethanogenic UASB reactor. J. Biotechnol.

    n, R., Fuchs, W., 2006. Advanced treat-use using a membrane bioreactor. Process

    ouza, E.E.S., 2007. Decolourisation effectsle wastewater using H2O2/UV process. J.3), 125129.

    dsorption studies on the removal of Ver-aqueous solutions using carbon slurry

    lloid Interf. Sci. 315 (1), 8793.

    y a novel Burkholderia sp. AFF

    Zhou, Fangfang Ai

    gical Science and Technology, KeyEnvironmental Engineering (Min-University of Technology, Dalian

    oo.cn (Y. Qu).

    s to investigate phenanthreneted Burkholderia sp. AFF and itsed that strain AFF could utilizerbon and energy, and was identi-to 16S rRNA gene analysis. Under0 C, 150 rmin1), phenanthrenewithin 84h by strain AFF. Andenanthrene concentration about

    es were isolated and identied byn AFF possesses the salicylic acidatechol 2,3-dioxygenase (C23O)t high level over a range of tem-9.0). The activity of crude C23O, Fe2+ and Fe3+. And the enzyment levels by H2O2, KI, SDS and l-and dithiothreitol (DTT) had less23Owas further partially puriedkDa by SDS-PAGE electrophore-

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