If you are just wanting a citrus flavor, yes you can. However, orange peel will taste different from lemon peel so you might not want to substitute.
Orange peel
Candied lemon peel (easy to do homemade). Or other candied citrus peels; orange, lime, grapefruit etc... Or perhaps crystallised ginger, glace cherries or raisins.
If its really an orange or if its actually a lemon or lime.
Orange, lime and lemon peel are normally used to make candid peel.
A citrus zester, sometimes called a lemon zester.
Technically, no. But in culinary terms rind refers only to the orange bit - not the white pith. Peel is a term that is usually reserved for 'candied peel' where more of the pith is left on and then cut up and candied in sugar syrup.
Yes, you can put grated lemon or orange peel in a scone. It gives it a mild citrus flavor and it's very good.
Yes. Only if you grade it.
You can eat properly cleaned lemon peels, as they have many beneficial properties, such as being high in antioxidants and vitamin C. You should be mindful when consuming lemon peel, however, because they are quite acidic. Consider consuming lemon peels in moderation.
There are 2 types of orange peel; candied and plain. Candied orange peel is used in baking (fruit cakes, cookies) and plain orange peel is used in savory dishes and sauces. It can be purchased in spice jars or homemade. To make it at home thinly shave or grate the orange part of the peel from a fresh orange. Do not include the white "pith" as it is bitter. To sweeten it boil it in sugar water and dry overnight.
I cannot find any such recipe. Lemon extract actually comes from the lemon peel, not the juice of the lemon.
Lime peel, or dried lemon peel from a grocery store.