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Describe BIODETERIORATION b.stev
AN  undesired  change  to the  property  in  material/s caused by SOME organisms The impact on the materials listed and a ...
MOIST  wood CAN grow  cellular fungus  ROT  : dark brown spots INSECTS:  termites/ boers gnaw MARINE BOERS:  piles of  the...
TIMBER TREATMENT necessary to sustain wood <ul><li>CUT LOGS converted  timber </li></ul><ul><li>preservative spray:  2-3 m...
ALL stages: process & storage FUNGI: most  common  biodeteriorant Causes : - breaks in the molecules  - elongation of thre...
<ul><li>resist light /humidity </li></ul><ul><li>affinity to fabric </li></ul><ul><li>low toxicity </li></ul><ul><li>colou...
(Studentsguide.in, 2008)
H 2 O in fuel  systems  allows  microbe  growth CAUSES   ECONOMIC LOSS & IS HAZARDOUS ‏ fuels:
&   are  microbes THAT  CAUSE  THESE  DEFECTS : ALSO  : a  fungus  in  KEROSENE Hormoconis resinal Psuedomonas Desulfovibr...
organoboron isothiazolones can be added:  controls  bio-deterioration > FUEL  AVIATION fuels tanks   drained   before flig...
Glass
GLASS made with : silica sand  -  silica(silicon dioxide) soda ash  -  sodium carbonate  limestone  -   calcium carbonate ...
Stone Biodeteriorants to stone are:   Microbes, Fungi, Algae, Lichens & Mosses WET/DRY cycles  of  the  TROPICS : loosens ...
Detachment of materials Black/brown crust Exfoliation Plant roots cause damage Discolouration White/gray powder White fluo...
ERADICATION  is in  2   STEPS: one week: KILLS growth BRUSH  off - bristle brush. TREATMENT:  inhibit  growth.
New  TO PRESERVE NEW cleaned stone:  pre-treat  BIOCIDE & H 2 O repellent <ul><li>INHIBITS ATTACK : </li></ul><ul><li>drai...
PROTECTIVE COATINGS & BIOCIDES ARE USED <ul><li>3-5%  fluorosilicate acid   painted/ sprayed </li></ul><ul><li>45-50%  sol...
ALSO USED  :   COPPER NAPTHALENE PENTACHLOROPHENOL  POROUS /  H 2 O -SATURATED CONCRETE -  SCALES   the  H 2 O  inside  fr...
INSULATIVE ELECTRICAL CABLE DECAY IS A HAZARD BURIED CABLES:  electrical, communication, sealing rings of sewage pipes (St...
Metals: corrosive (Students guide.in, 2008)
Bibliography Martin.S.V. (2001).   How glass is made .   Retrieved August 26, 2008, from http//:www.texas glass .com/ glas...
Kumar. R. and Kumar. A.V. (1999).  Biodeterioration of stone in tropical  environments . Retrieved August 19, 2008, from  ...
Students guide.in. (2008).  Biodeterioration, microbial deterioration, microorganisms, enzymes . Retrieved  September 6, 2...
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Describe Biodeterioration

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biodeterioration, textiles biodeterioration, timber biodeterioration, fuels biodeterioration, glass biodeterioration, stone biodeterioration, concrete biodeterioration, rubber biodeterioration, metal biodeterioration, control of biodeterioration, prevention of biodeterioration

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Transcript of "Describe Biodeterioration"

  1. 1. Describe BIODETERIORATION b.stev
  2. 2. AN undesired change to the property in material/s caused by SOME organisms The impact on the materials listed and a method of prevention follow metals What is it? timber glass concrete rubber textiles stone fuels
  3. 3. MOIST wood CAN grow cellular fungus ROT : dark brown spots INSECTS: termites/ boers gnaw MARINE BOERS: piles of the structures : hulls of wooden ships/ boats MOLDS: threat in damp regions MICROBES: draw at the wood
  4. 4. TIMBER TREATMENT necessary to sustain wood <ul><li>CUT LOGS converted timber </li></ul><ul><li>preservative spray: 2-3 mths storage </li></ul><ul><li>PESTICIDES: vacuum under pressure </li></ul><ul><li>most common treatment/s: </li></ul><ul><li>BORON (pink) ‏ </li></ul><ul><li>PERMETHRIN PLUS (blue) ‏ </li></ul><ul><li>WOOD manufactured: exposure LIFE </li></ul>(NZ timber preservation council, 2004)
  5. 5. ALL stages: process & storage FUNGI: most common biodeteriorant Causes : - breaks in the molecules - elongation of thread - loss in strength - discolouration TEXTILES
  6. 6. <ul><li>resist light /humidity </li></ul><ul><li>affinity to fabric </li></ul><ul><li>low toxicity </li></ul><ul><li>colour - less </li></ul><ul><li>odour - less </li></ul><ul><li>cost effective </li></ul>BIOCIDES used need ability:
  7. 7. (Studentsguide.in, 2008)
  8. 8. H 2 O in fuel systems allows microbe growth CAUSES ECONOMIC LOSS & IS HAZARDOUS ‏ fuels:
  9. 9. & are microbes THAT CAUSE THESE DEFECTS : ALSO : a fungus in KEROSENE Hormoconis resinal Psuedomonas Desulfovibrio some MOULDS thrive > stickiness ( viscosity ) : roads/ asphalt / pipe linings
  10. 10. organoboron isothiazolones can be added: controls bio-deterioration > FUEL AVIATION fuels tanks drained before flight this rids collected H2O carries microbes (Institute for energy and environment, 2008)
  11. 11. Glass
  12. 12. GLASS made with : silica sand - silica(silicon dioxide) soda ash - sodium carbonate limestone - calcium carbonate (Martin.S.V, 2001) <ul><li>PREVENT CORROSION </li></ul><ul><li>WASH regularly to maintain: </li></ul><ul><li>Sponge rub & hot soapy water </li></ul><ul><li>Soft bristles ALSO if needed </li></ul><ul><li>Wipe clean with rubber slide </li></ul>
  13. 13. Stone Biodeteriorants to stone are: Microbes, Fungi, Algae, Lichens & Mosses WET/DRY cycles of the TROPICS : loosens & fragments stone. THEN - IS susceptible to biochemical factors
  14. 14. Detachment of materials Black/brown crust Exfoliation Plant roots cause damage Discolouration White/gray powder White fluoroescence Stains Patches Pitting Cracks SHOW as:
  15. 15. ERADICATION is in 2 STEPS: one week: KILLS growth BRUSH off - bristle brush. TREATMENT: inhibit growth.
  16. 16. New TO PRESERVE NEW cleaned stone: pre-treat BIOCIDE & H 2 O repellent <ul><li>INHIBITS ATTACK : </li></ul><ul><li>drainage systems </li></ul><ul><li>periodic cleaning </li></ul><ul><li>And resurfacing. </li></ul><ul><li>ADD TOXIC SOLVENTS </li></ul><ul><li>cleaning : scours off grime </li></ul><ul><li>cleaning : add BIOCIDE </li></ul><ul><li>> dibutyltin dilaurate </li></ul>(Kumar. R. and Kumar. A.V, 1999)
  17. 17. PROTECTIVE COATINGS & BIOCIDES ARE USED <ul><li>3-5% fluorosilicate acid painted/ sprayed </li></ul><ul><li>45-50% solution - white spirit </li></ul><ul><li>applied 1/2 coats : BIOCIDAL </li></ul><ul><li>4-6% solution - synthetic resins ie: </li></ul><ul><li>polyesters/ epoxides : FUNICIDAL </li></ul>(NAHB Research Center , 2008) Concrete
  18. 18. ALSO USED : COPPER NAPTHALENE PENTACHLOROPHENOL POROUS / H 2 O -SATURATED CONCRETE - SCALES the H 2 O inside freezes H 2 O carries many CHEMICALS acids/ sulfates/ chlorides
  19. 19. INSULATIVE ELECTRICAL CABLE DECAY IS A HAZARD BURIED CABLES: electrical, communication, sealing rings of sewage pipes (Students guide.in, 2008)
  20. 20. Metals: corrosive (Students guide.in, 2008)
  21. 21. Bibliography Martin.S.V. (2001). How glass is made . Retrieved August 26, 2008, from http//:www.texas glass .com/ glass _facts/How_ Glass _ made .htm Maruthamuthu .S. (2008). Role of air microbes on atmospheric corrosion . Retrieved August 26, 2008 from http//: www.ias.ac.in/currsci/f eb102008/359.pdf NAHB Research Center . (2008). Can water cause deterioration of concrete . Retrieved August 28, 2008, from http//: www.toolbase.org/Toolbase Resources/level4FAQ.aspx?ContentDetailID=3547&BucketID=5& =25 - 18k Forest Research NZ. (2008). Timber preservation. Retrieved August 19, 2008 from, http//: www.nzic.org.nz/ChemProcesses/forestry /4B.pdf -
  22. 22. Kumar. R. and Kumar. A.V. (1999). Biodeterioration of stone in tropical environments . Retrieved August 19, 2008, from http//:www.getty. edu/conservation/publications/pdf_publications/biodeterioration.pdf Institute for energy and environment. (2008). Microorganisms that convert hydrocarbons to natural gas . Retrieved August 15, 2008, from http//: www. poweronline.com/article.mvc/Microorganisms-That-Convert- Hydrocarbons-0001 - 31k - ASTM International. (2008). Standard guide for microbial contamination in fuels . Retrieved August 15, 2008, from http//: www.astm.org/Standards /D6469.htm NZ timber preservation council. (2004). Hazard class description . Retrieved August 23, 2008, from http//: www.nztpc.co.nz/hazardClass Description.php <ul><ul><li>Wood processors association of NZ. (2008). Timber Treatment . Retrieved </li></ul></ul><ul><ul><li>August 23, 2008, from http//: www.wpa.org.nz/Site/Issues/ Timber </li></ul></ul><ul><ul><li>_Treatment.aspx - 9k - </li></ul></ul>
  23. 23. Students guide.in. (2008). Biodeterioration, microbial deterioration, microorganisms, enzymes . Retrieved September 6, 2008, from http//:www.studentsguide. in/microbiology/biodegradation-bioremediation- biodeterioration / biodeter ioration .htm Morton. G. (2003). Aug 03 101 156 . Retrieved September 6, 2008, from http//: www.sgm.ac.uk/pubs/micro_today/pdf/080301.pdf
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