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BSFL Poster

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BSFL Poster

  1. 1. Black  Soldier  Fly  Larvae  Compos5ng   Diver5ng  food  waste  away  from  landfills  by  u5lizing  natural  processes   Hunter  Bradshaw  bradshawrh@email.wofford.edu   Figure  3-­‐  External  and  internal   view  of  the  of  BioPod™  Plus3   All  compost  piles  were  located  in  the  Wofford  College   greenhouse.  Temperatures  inside  the  greenhouse   were  recorded  several  5mes  throughout  the  span  of   the  experiment.  The  first  aNempt  at  seOng  up  a  BSFL   compost  was  unsuccessful  in  reducing  the  food   waste.  The  compost  bin  was  home-­‐made  and  did  not   sustain  a  suitable  moisture  content  for  the  larvae.   The  second  aNempt  implemented  the  used  of   BioPod™  Plus,  a  compost  bin  manufactured   specifically  for  BSFL.  However,  the  larvae  in  the   compost  had  matured  past  the  point  of  ea5ng  and   were  preparing  for  pupa5on.  On  the  third  aNempt,   the  compost  was  inoculated  with  young  BSFL  bought   from  a  third-­‐party  vendor.     Wofford  College  Environmental  Studies  Program:  Senior  Capstone  Project   While  BSFL  are  very  hardy  insects,  several  condi5ons   must  be  met  to  ensure  a  successful  compost.     1.  Moisture  content-­‐  The  larvae  have  a  difficult  5me   consuming  dried  food  and  can  drown  in  the   presence  of  too  much  liquid  so  be  considerate  of   what  goes  into  the  compost.  The  BioPod™  Plus   has  a  drainage  basin  to  prevent  drowning  and   occasional  sprays  of  water  will  keep  the  food   moist.  Be  sure  to  keep  the  compost  out  of  direct   sunlight,  as  this  will  speed  up  the  dehydra5on   process.   2.  Temperature-­‐  Black  soldier  flies  are  na5ve  the   southern  United  States  and  thrive  best  in   temperatures  ranging  from  60-­‐100°  F7.  There   typically  three  genera5ons  per  warm  season  in   Georgia,  with  larvae  becoming  dormant  during   the  colder  months13.  This  project  spanned  from   late  January  un5l  late  March,  with  atmospheric   temperatures  reaching  as  low  as  9°  F27.  The   greenhouse  sustained  temperatures  high  enough   to  support  an  ac5ve  BSFL  colony  during  this  5me.         Acknowledgements   I  would  like  to  thank  Dr.  Savage,  Dr.  Ferguson,   Professor  Lane,  Dr.  Rayner,  Junk  MaNers,  LLC,   Wallace  Campbell,  David  Thornton,  and  Bruce  Adams   for  their  support  guidance,  thoughrout  this  project.     References  and  addi7onal  resources   Abstract   Consolida5ng  trash  in  landfills  is  now  a  widespread   sanitary  prac5ce.  Landfills  are  essen5ally  a  non-­‐ renewable  resource  because  of  a  limited  holding   capacity  and  restric5ons  on  building  new  ones.   Therefore,  landfills  must  be  used  as  efficiently  as   possible  through  only  receiving  material  that  cannot   be  diverted  elsewhere.  Two  landfill-­‐diversion   methods  are  recycling  and  compos5ng,  with   recovering  recyclables  being  much  more  common.   There  is  a  substan5ally  smaller  percent  of  organic,   compostable  materials  that  is  diverted  away  from  the   landfill,  leaving  much  room  for  improvement.  One   method  of  compos5ng  involves  using  black  soldier  fly   larvae  (BSFL),  a  non-­‐pest  insect,  to  consume  and   minimize  food  waste.  A  colony  of  BSFL  successfully   composted  food  waste  from  Wofford  College's   cafeteria,  located  in  Spartanburg,  South  Carolina.     Experimental  Methods   Discussion  and  Recommenda7ons   Results   The  young  larvae  successfully  reduced  the  food   waste  in  the  compost  and  matured  into  adult  flies.   The  5meline  of  the  third  compost  trial  is  denoted   listed  on  Table  1  (above  right).   Figure  1-­‐               (On  left)   Appearance  of   black  soldier  5ly   in  different  life   stages  1   1.  Black  Soldier  Fly.  Integrated  Pest  Management.  NC  Coopera5ve             Extension.  hNp://ipm.ncsu.edu/AG369/pics/black_soldier_fly.gif     2.  Direct  Compost  Solu5ons.  Life  Cycle  of  a  Black  Soldier  Fly.  hNp:// directcompostsolu5ons.com/wp-­‐content/uploads/2014/08/BSF-­‐care-­‐ card-­‐2-­‐inches.jpg   3.  External-­‐  BioPod.  BioPod  Plus.  hNp://www.thebiopod.com/pages/ biopod-­‐plus_files/bp002b2010-­‐masked002btextx560.png   Internal-­‐  Aquabarrel.  BioPod  Plus,  Soldier  Grub  Composter.  hNp:// www.aquabarrel.com/media/images/products/ abpCbiopod_internalview_500w.png   4.  Prota™Culture.  BioPod™-­‐User’s  Guide.     hNp://www.thebiopod.com/pdf/BioPod-­‐Plus-­‐Manual.pdf   5.  Tomberlin  JK,  Sheppard  DC,  Joyce  JA.  2002.  Selected  life  history   traits  of  black  soldier  flies  (Diptera:  Stra5omyidae)  reared  on  three   ar5ficial  diets.  Annals  of  the  Entomological  Society  of  America  95:   379-­‐386.     6.  Weather  Underground.  Weather  History  for  KGSP-­‐  February  hNp:// www.wunderground.com/history/airport/KGSP/2015/2/23/ MonthlyHistory.html?&reqdb.zip=&reqdb.magic=&reqdb.wmo=           ! Table&1:&Compost!timeline& 2/2/15& Inoculate!compost!with!600!small!larvae!and!743!g!of!food& 2/4/15& Add!223!g!of!food& 2/8/15& Add!851!g!of!food.& 2/11/15& Add!537!g!of!food& 2/15/15& Add!267!g!of!food& 2/16/15& Add!188!g!of!food& 2/18/15& First!6D!instar!larvae!sighted!climbing!migration!ramp& 2/23/15& Add!416!g!of!food.!Eight!mature!larvae!in!collection!bin& 2/24/15& About!30D40!larvae!in!collection!bin& 3/2/15! Majority!of!food!gone.!Around!50D70!larvae!in!collection!bin.!Bugs!active! because!of!warm!weather!(27.4°!C!at!2:30!pm)! 3/9/15! 100+!larvae!in!collection!bin! 3/11/15! 150+!larvae!in!collection!bin! 3/12/15! Add!299!g!of!food!for!remaining!larvae.!200+!larvae!in!collection!bin! 3/20/15! Add!367!g!of!food! 3/25/15! First!appearance!of!adult!black!soldier!fly! Figure  2-­‐               (On  right)               Life  cycle,  in   days,  of  the   black  soldier   5ly2   Conclusion   This  experiment  was  at  a  scale  comparable  to  a   home  sized  compost.  With  enough  par5cipa5on,   geographically  suitable  loca5ons  could  substan5ally   reduce  food  waste  coming  from  residen5al  areas.   Furthermore,  this  method  of  compos5ng  can  be   scaled  up  to  provide  cafeterias  and  restaurants  a   free  and  easy  to  maintain  food  disposal  service  that   requires  liNle,  to  no,  transporta5on  of  waste.   Currently,  there  are  only  a  few  formal  scien5sts   exploring  the  black  soldier  flies’    compos5ng   capabili5es.  As  informa5on  increases,  so  will  the   ability  to  u5lize  this  insect  for  a  beneficial  and   sustainable  prac5ce.  

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