本文選題：含鈦蒙脫土　切入點(diǎn)：吸附　出處：《沈陽化工大學(xué)》2017年碩士論文

【摘要】：在化工企業(yè)中有一句話說:“水是工業(yè)的血液”。因此,水源是現(xiàn)代化工企業(yè)不可缺少的材料。伴隨經(jīng)濟(jì)的進(jìn)步,近些年來工業(yè)廢液的排放已經(jīng)成為環(huán)境水污染的主要源頭之一。例如:造紙廠、染料廠、電鍍廠等排放的廢水中,含有大量有害的重金屬離子和有機(jī)物,會危害水生生物,影響飲用水源,給人類的身體健康帶來嚴(yán)重危害。一種新型的低成本吸附材料的應(yīng)用和發(fā)展,是處理含重金屬廢水的重中之重。改性蒙脫土具有操作簡單、吸附效率高、污染小、無腐蝕等優(yōu)點(diǎn)。它是一種綠色、高效的吸附劑,具有廣闊的應(yīng)用前景。本文創(chuàng)新處在于,未使用傳統(tǒng)的溶膠-凝膠(sol-gel)法制備鈦柱化劑,而是采用硫酸鈦水解產(chǎn)物做交聯(lián)劑對蒙脫土進(jìn)行無機(jī)改性。從多步實(shí)驗(yàn)變?yōu)橐徊街频卯a(chǎn)物,降低其制作成本,提高了吸附材料的實(shí)用性。通過TG-DSC、IR和XRD分析對其結(jié)構(gòu)進(jìn)行表征,并將改性后的含鈦蒙脫土用于廢水中銅離子、亞甲基藍(lán)的去除�？疾榱撕伱擅撏恋奈叫阅芎凸獯呋阅堋�(shí)驗(yàn)結(jié)果表明:(1)蒙脫土經(jīng)硫酸鈦改性后,層間距增大,但蒙脫土的層板結(jié)構(gòu)并沒有被破壞。(2)用于亞甲基藍(lán)去除所制備含鈦蒙脫土的最佳條件為:硫酸鈦濃度為0.15mol/L,水解溫度為70℃,鈦土比為1.75mmol硫酸鈦/g鈉土,于60℃烘干。(3)含鈦蒙脫土用于亞甲基藍(lán)的去除,在蒙脫土用量為0.07g/50mL亞甲基藍(lán)溶液;亞甲基藍(lán)的濃度為300mg/L,紫外光照為1小時的條件下,去除率可以達(dá)到99.91%。(4)用于銅離子去除所制備含鈦蒙脫土的最佳條件為:硫酸鈦濃度為0.15mol/L,水解溫度為70℃,鈦土比為1.75mmol硫酸鈦/g鈉土,于60℃烘干后在150℃下燒制2h。(5)含鈦蒙脫土用于廢水中銅離子的去除,當(dāng)土用量為0.4g/50mL銅液、銅離子的濃度為10mg/L、吸附時間是1小時,吸附率可以達(dá)到93.59%。
[Abstract]:In chemical enterprises, there is a saying: "Water is the blood of industry." therefore, water is an indispensable material for modern chemical enterprises. In recent years, the discharge of industrial waste liquor has become one of the main sources of environmental water pollution. For example, the wastewater discharged from paper mills, dye factories, electroplating plants and so on contains a large number of harmful heavy metal ions and organic substances, which can harm aquatic organisms. The application and development of a new type of low-cost adsorption material is the most important in the treatment of wastewater containing heavy metals. Modified montmorillonite has the advantages of simple operation and high adsorption efficiency. It is a green and efficient adsorbent with wide application prospect. The innovation of this paper is that the traditional sol-gel method is not used to prepare titanium column agent. Instead, the inorganic modification of montmorillonite was carried out by using titanium sulfate hydrolysate as crosslinking agent. The product was prepared from multi-step experiment to one-step production, which reduced the production cost and improved the practicability of adsorption material. The structure of montmorillonite was characterized by TG-DSCIR and XRD analysis, and the structure of montmorillonite was characterized by TG-DSCIR and XRD. The modified titanium-containing montmorillonite was used to remove copper ion and methylene blue in wastewater. The adsorption and photocatalytic properties of Ti-containing montmorillonite were investigated. The experimental results showed that the interlayer spacing of montmorillonite was increased after modification with titanium sulfate. However, the laminate structure of montmorillonite was not destroyed. 2) the optimum conditions for removal of titanium montmorillonite by methylene blue were as follows: titanium sulfate concentration was 0.15 mol / L, hydrolysis temperature was 70 鈩，

本文編號：1670618