| 第 39 卷第 2 期 |  | Vol. 39 No. 2 | | 2009 年 4 月 | Apr 2009 |
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所屬欄目：安全與環(huán)保
樹(shù)脂吸附法從含鉬廢水中回收制備三氧化鉬 |
| 李志松，李群松，舒均杰
（湖南化工職業(yè)技術(shù)學(xué)院，湖南 株洲 412004） |
| 摘 要：采用A325樹(shù)脂對某含鉬廢水進(jìn)行吸附，回收廢水中的鉬并制得了三氧化鉬產(chǎn)品。整個(gè)過(guò)程分為廢水中鉬的吸附、解吸、除雜凈化和三氧化鉬的制備等幾個(gè)步驟。在鉬的吸附過(guò)程中，當原料液鉬濃度2.8 g／L時(shí)，適宜的工藝條件是：v（料液） ∶ v（樹(shù)脂）=45 ∶ 1，料液pH值為3.0、料液溫度25±2℃、料液流速10 mL／min，鉬的吸附率可達到94.3%。解吸時(shí)，采用10%的氨水溶液作為解吸液，v（解吸液） ∶ v（樹(shù)脂）=2 ∶ 1進(jìn)行配料。富鉬解吸液再經(jīng)除雜凈化、酸化沉淀、過(guò)濾、洗滌、烘干、煅燒，制得三氧化鉬產(chǎn)品。 |
| 關(guān)鍵詞：含鉬廢水；三氧化鉬；樹(shù)脂吸附法；回收制備 |
| 中圖分類(lèi)號：TF841.2 文獻標識碼：A 文章編號：1009-9212（2009）02- 0060-03 |
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| Recovery and Preparation of Molybdenum Trioxide from Wastewater by Way of Resin Adsorption |
| LI Zhi-song，LI Qun-song，SHU Jun-jie
（Hunan Chemical Industry Professional Technology College，Zhuzhou 412004，China） |
| Abstract：Molybdenum was recovered from wastewater by adsorption with A325 resin and then converted into molybdenum trioxide. The process was consisted of adsorption, desorption, purification and preparation of molybdenum trioxide. For a water feed containing Mo 2.8 g／L，the proper separation conditions were achieved as：v（feed solution） ∶ v(resin）=45 ∶ 1，pH 3.0，temperature 25±2℃，and feed flow rate 10 mL／min. Under these conditions 94.3% of Mo in the water was adsorbed. 10% NH4OH solution was used for desorption at a volume ratio of 2 ∶ 1［v（desorption solution）∶ v(resin）］. Molybdenum trioxide was prepared from the Mo rich desorption solution in steps of purification，acidic precipitation，filtration，washing，drying and calcination. |
| Key words：molybdenum containing wastewater；molybdenum trioxide；resin；adsorption |
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作者簡(jiǎn)介：李志松（1966-），高級工程師，湖南雙峰人，主要從事教學(xué)及精細化工產(chǎn)品的研發(fā)工作。（E-mail：lizhisong1888@163.com）
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收稿日期：2009-03-26
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