| Summary: | 碩士 === 國立高雄第一科技大學 === 環境與安全衛生工程研究所 === 102 === Lead-Acid batteries are very popular in our life. We can see it from traffic transportation, medical equipment, communications equipment and other part which we used.
Lead-Acid batteries make from lead plate, electrolyte and plastic case. Recently, lead-acid batteries recycling technology often treat to lead plate and plastic case. Lead plate will be purified by furnace to make high pure lead material, and the plastic will be wash after crush. Finally, the plastic will be the plastic grain and it will be a good material in industry. But electrolyte always use addition drug to make the electrolyte go to neutral reaction just like waste acid liquid treatment before going to waste water treatment.
But addition drug to neutral reaction have two principal problems in waste water treatment. First, cause waste electrolyte have many kind of heavy material like iron, lead, antimony and other kind of harmful ion the sludge will be made after addition drug. Secondly, addition drug to neutral reaction will cost lot of money to treat electrolyte. Those problems will be harmful in our environment and financial cost.
For the reason, we will treat lead ion and iron ion in waste electrolyte with Ion Exchange Resins (IER) and Extractant Impregnated Resins (EIR) to make sure they can be used. First of all, we will execute foresight experiment to make sure those resins can treat material. Second, we will carry out batch experiment to discuss those resins adsorption. Finally, the column experiment will tell us the impact factor in adsorption and desorption to make sure the relationship between the operating and heavy metal removal ability for the best operating condition.
In the results, we knew the information in the experiment. In the beginning, the foresight experiment told us the IER can absorb Fe3+ and Pb2+ and EIR can absorbed Fe3+. In the acidly environment, the adsorption in IER and EIR were much lower than without acidly environment. We inferred that the ion existed in liquid at low pH value, so heavy metal will not be easily adopted in resin. In the column experiment, both resins can effectively treaded Fe3+ in waste electrolyte. But IER reaction time was four time to EIR in the same condition. And desorption experiment proofed both resins can effectively treaded Fe3+ in resin which was after treatment.
As the result, we can use adsorption process to treat Fe3+ in waste electrolyte and to reach recycling electrolyte.
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