本文關(guān)鍵詞： 絡(luò)合-超濾 電沉積 鎳回收　出處：《現(xiàn)代化工》2017年04期 　論文類型：期刊論文

【摘要】：在絡(luò)合-超濾處理含鎳廢水并得到鎳離子質(zhì)量濃度為418 mg/L濃縮液的基礎(chǔ)上,考察了電沉積法處理含鎳濃縮液過(guò)程中電流密度、初始pH、電解時(shí)間、溫度、極距、攪拌等參數(shù)對(duì)電流效率和鎳回收率的影響。結(jié)果表明:當(dāng)電流密度、電解時(shí)間增加時(shí),電流效率隨之下降,而鎳回收率增大;當(dāng)pH、極距增大時(shí),電流效率和鎳回收率均先增大后減小;溫度升高、低速攪拌均可提高電流密度與鎳回收率。在電流密度為3.5 m A/cm~2,pH=4,溫度為50℃,電解時(shí)間為130 min,極距為10 cm并加入低速攪拌的最優(yōu)操作條件下,電流效率最高可達(dá)42%,鎳回收率可達(dá)52%,并探討了電沉積機(jī)理。
[Abstract]:On the basis of complexation and ultrafiltration treatment of nickel containing wastewater and nickel ion concentration of 418 mg/L concentrate, the current density, initial pH, electrolysis time, temperature and polar distance of nickel concentrate treated by electrodeposition were investigated. The results show that when the current density and electrolysis time increase, the current efficiency decreases, while the nickel recovery increases, and when pH increases, the polar distance increases. The current efficiency and nickel recovery increased first and then decreased, and the current density and nickel recovery increased with the increase of temperature, and the current density was 3.5 Ma / cm ~ (2) / cm ~ (-2) pH ~ (4), and the temperature was 50 鈩，

本文編號(hào)：1522429