大洋多金属结核吸附SO2的研究

采用动态吸附柱研究了大洋多金属结构矿对废气中的ＳＯ２的吸附，考察了ＳＯ２浓度、废气流速、吸附温度及时间对吸附效率的影响。结果表明，ＳＯ２的最高吸附率可达９９％，１ｇ结核矿吸附ＳＯ２可达０．４５ｇ，吸附后可增重５５％。用３ｍｏｌ／Ｌ ＮａＯＨ溶液对吸附后的结核进行再生，再生率可达９９％，所得再生母液中的Ｎａ２ＳＯ４质量浓度可达１２０ｇ／Ｌ，再生后的结核矿可以重复使用。

Study on Sorption of SO 2 Using Ocean Polymetallic Nodules

Sorption of SO 2 using ocean polymetallic nodules is investigated using a dynamic adsorption column. The authors study the effects of SO 2 concentration, gas velocity, adsorption temperature and time on the adsorption capacity of ocean polymetallic nodules, thereby establishing the optimum technological conditions, under which one gram ocean nodule can adsorb 0 45 g SO 2 and its weigh is increased by 55% by adsorption. The adsorpted SO 2 is eluted with NaOH solution (3 mol/L), obtaining regenerated nodules for reuse and regenerated mother solution containg up to 120 g/L Na 2SO 4.