Applicants holding driving licence/learnerâs licence/conductorâs licence desire for noting change of address shall make an application on plain paper along with documents and any one of the following proof of address :
alkali refining. in fat and oil processing: Alkali refining. Many of these can be removed by treating fats at 40Â° to 85Â° C (104Â° to 185Â° F) with an aqueous solution of caustic soda ( sodium hydroxide) or soda ash (sodium carbonate). The refining may be done in a tank (in which case it is called batch or tank refining) or in a continuous system.
Spent Caustic Wastewater Treatment. Spent caustic streams from the downstream of the oil and gas industry consist of very high Chemical Oxygen Demand (COD) levels and several other hazardous contaminants such as sulfides, mercaptans, sodium salts etc. Due to these contaminants in refinery spent caustic, these wastewaters are difficult to treat and very harmful to the environment.