You may, but you may not like the end product. The lemon juice adds acidity like orange juice will that help to prevent spoilage, but lemon juice also contributes to the taste. Orange juice will too, but you may find it much sweeter.
lemon juice will turn your hair orange in colour as this technique is only used on already blonde hair to make it go blonder. I once tried this and ended up with orange hair so say with experience do not do the same!