The oil is non-polar and does not dissolve the color or sugar. This is a ball-and-stick model of citric acid. Citric acid is dissolved in water in oranges, lemons, grapefruit, and other citrus fruits.

A simple, highly efficient, inexpensive, and environmentally friendly process could provide a viable pathway for the sustainable recycling of depleted lithium-ion batteries (LIBs): No chemicals beyond ...