Sodium Hydroxide Quotes

Once we obtain high-quality foods, we still must prepare them properly. The first step in nontoxic food preparation is to wash or peel foods in order to remove agricultural chemicals, bacteria and molds. Waxed foods (such as most cucumbers, eggplant, turnips and apples) definitely should be peeled, because the wax often is covering surface residues of pesticides and fungicides that are applied before the wax is applied; also, questions abound about the safety of some of the waxes. For foods that cannot be peeled, washing under running water for a minute or two does a relatively good cleaning job; using a pure, liquid castile soap (a mild soap made from olive oil and sodium hydroxide) cleans even better. For foods like lettuce,

Biodiesel is a renewable fuel produced from animal fats or vegetable oils (edible and nonedible) through the transesterification process. The triglycerides of fatty acids present in the aforementioned feedstock are responsible for their high viscosity and make them undesirable for their use as fuel. Pure oil/fats have less density and heating value than the fossil-derived fuels. Therefore, the transesterification of the oils/fats is carried out to reduce their viscosity and to enhance the density and calorific value [75]. During transesterification, the triglycerides react with alcohols such as methanol or ethanol in the presence of an alkali catalyst such as sodium hydroxide or potassium hydroxide at atmospheric pressure around 50–70 ℃ temperature [76]. Transesterification produces fatty acid alkyl esters as the main product, which is called biodiesel, while glycerol is formed as the by-product. The length of the carbon chain in the biodiesel varies over a wide range from C8 to C25 [77