Most recycling systems don't want anything the least bit out of the ordinary. Gelatin is likely to cause trouble in paper recycling, for instance, causing the fibers to gum together instead of dispersing (and there isn't as much bleaching in recycled paper, for various reasons -- chlorine bleach would break up the gelatin). The last three places I've lived didn't want broken glass of any sort (presumably for safety reasons, since they end up crushing the recycled glass to make frit).
Plastic chemical bottles probably can be recycled after washing, as long as there aren't restrictions on contents of plastic containers and your facility handles the type of plastic they're made of. Again, most recycling systems (in the USA) don't seem to handle plastics other than 1 (PETE, beverage bottles almost exclusively) and some 2 (HDPE, but not LDPE, usually); here (North Carolina) they don't even want 2 if it was a dairy container (no idea why).
Please check with your local recycling authority, since their needs are the controlling ones -- "contamination", however well meaning, costs so much to remove that it nullifies the efforts of dozens of recyclers if you start tossing the wrong stuff into the bin; many recycling utilities have to simply landfill contaminated loads because they can't sell the material (though the ones that do more separation themselves do better on this, because they're better set up to remove contamination, like #7 ketchup bottles in with the #1 soda jugs).