There are various mechanisms for the destruction or loss of cyanide in the heap. These mechanisms include: bacteria, that is, the action of microorganisms; the action of air; the action of sunlight; and the action of the pile. First, the role of microorganisms Cyanide contains two basic life elements, carbon and nitrogen. These elements in cyanide are bonded by a high-energy, carbon-nitrogen bond, so cyanide is an ideal food for microorganisms. When cyanide is combined with oxygen, soda ash and trace amounts of phosphorus , the microorganisms can grow vigorously, and the cyanide destruction by the microorganisms is complete. Cyanide is oxidized to form CO 2 or hydrocarbons, while nitrogen is converted to nitrogen or protein. The biological treatment process can also remove thiocyanate, a free and metal complexed cyanide, metals and ammonia. Biodegradable products include sulfur, nitrogen and carbon. Second, the role of air Oxygen in the air is an effective oxidant for cyanide. This oxidation process must have a catalyst. Many compounds are effective catalysts, and sulfur oxide or sulfite ions have recently been used as catalysts. Materials have some activity, such as activated carbon, iron oxide, manganese oxide, clay (clay), zeolites, and active silica, it can also act as a catalyst. Some of the above compounds may be present in the heap leach or heap material. Cyanide reacts with air as 4NaCN + 50 2 + 2H 2 O - 2N 2 + 4CO 2 + 4NaOH Third, the role of sunlight Sunlight also acts to catalyze the reaction of oxygen and cyanide, which is especially effective. When cyanide on the surface of the heap or cyanide is sprayed into the air, it can be oxidized with cyanide under exposure to ultraviolet radiation.
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Jining oking tec co.,ltd, established in 2010, is a professional manufacturer engaged in the research, development, production, sale and service of Concrete Grinding machines, Floor Polishing Machines, Road Line Marking Machines, Truck Cranes, Road Rollers, Excavators, Concrete leveling machines, Power Trowels and other Construction machinery .
We are located in Jining city,Shandong province with convenient transportation access. Dedicated to strict quality control and thoughtful customer service, our experienced staff members are always available to discuss your requirements and ensure full customer satisfaction.
In recent years, we have introduced a number of advanced production equipment, and also have an excellent production team and a complete quality assurance system to ensure that each batch of goods is delivered to customers in a timely and high quality.
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What is included in natural degradation?