[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: Shellfish processing waste



Noel--

You wrote "We are particularly interested in beneficial uses for the shells."

The crustacean (crab, lobster, shrimp) shells are made of chitin, which has a variety of uses.  Chitin and chitosan are used as diet aids that absorb fat, blocking its absorption by the body.  Chitin and its derivatives have also been employed for drug delivery and other medical applications as well as in material, cosmetic, agricultural, textile, and even environmental applications (such as chelating heavy metals and as a wastewater filtration medium).  See http://bae00du.bae.ncsu.edu/courses/bae465/1995_projects/bake/smith/index1.html  
http://www.chipsbooks.com/appchit.htm
and http://www.padetec.ufc.br/res-chitosan.htm among other web references.

Mollusk shells have been used in calcium dietary supplements.  Perhaps the best beneficial use is the use of oyster shells to re-establish oyster habitat (which benefits other species and helps clean the water).  See http://www.chesapeakebay.net/reefrest.htm for our efforts in the Chesapeake Bay (Virginia, Maryland).  See http://www.csc.noaa.gov/scoysters/html/project.htm for what South Carolina is doing.

I hope this is helpful.

Rod

Rodney Sobin
Air Permitting Program Coordinator
Virginia Department of Environmental Quality
Postal: P.O. Box 10009, Richmond, VA 23240-0009
Street:  629 E. Main St., Richmond, VA 23233-2429
Tel. 804-698-4382	fax 804-698-4264  Rsobin@deq.state.va.us
DEQ Innovative Technology http://www.deq.state.va.us/innovtech
Chesapeake Bay Program Innovative Technology http://www.chesapeakebay.net/innovative.htm <http://www.chesapeakebay.net/innovative.html> 
Virginia Environmental Services Network http://www.vesn.org

	-----Original Message-----
	From:	Noel Duffy [SMTP:nduffy@cit.ie]
	Sent:	Wednesday, February 19, 2003 8:31 AM
	To:	p2tech@great-lakes.net; .@glc.org
	Subject:	Shellfish processing waste

	We are working with several shellfish processors: crab, mussels, etc.  Can you direct me to some relevant P2 experiences and options, e.g. benchmark values for water consumption, meat recovery, membranes for wastewater recovery, etc.  We are particularly interested in beneficial uses for the shells.
	
	Thanks
	

	Noel Duffy
	
	  _____  
	

	Clean Technology Centre
	Melbourne Business Park
	Model Farm Road
	Cork
	Ireland
	t: +353 21 434 4864
	f: +353 21 434 4865
	e: nduffy@cit.ie
	w: www.ctc-cork.ie <http://www.ctc-cork.ie/> 
	
	-------------------Legal Disclaimer--------------------------------------- The above electronic mail transmission is confidential and intended only for the person to whom it is addressed. Its contents may be protected by legal and/or professional privilege. Should it be received by you in error please contact the sender at the above quoted email address. Any unauthorised form of reproduction of this message is strictly prohibited. The Institute does not guarantee the security of any information electronically transmitted and is not liable if the information contained in this communication is not a proper and complete record of the message as transmitted by the sender nor for any delay in its receipt. ---------------------------------------------------------------------------------------- * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * p2tech is hosted by the Great Lakes Information Network: http://www.great-lakes.net To unsubscribe from this list: send mail to majordomo@great-lakes.net with the command 'unsubscribe p2tech' in the body of your message. No quotes or subject line are required. About : http://www.great-lakes.net/lists/p2tech/p2tech.info * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 


* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
p2tech is hosted by the Great Lakes Information Network:
http://www.great-lakes.net
To unsubscribe from this list: send mail to majordomo@great-lakes.net
with the command 'unsubscribe p2tech' in the body of your message. No
quotes or subject line are required.
About : http://www.great-lakes.net/lists/p2tech/p2tech.info
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *