| 第 50 卷第 5 期 |  | Vol. 50 No. 5 | | 2020 年 10 月 | Oct 2020 |
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所屬欄目：安全與環(huán)保
殼聚糖聯(lián)合改性粉煤灰吸附廢水中的亞甲基藍 |
| 張新宇1，柴 濤1*，耿振香2，劉登登1，吳 凱1，張 行1
（1. 中北大學(xué) 環(huán)境與安全工程學(xué)院，山西 太原 030051；2. 太原工業(yè)學(xué)院，環(huán)境與安全工程系，山西 太原 030008） |
| 摘 要：為降低染料廢水的處理成本，實(shí)現“以廢治廢”的目的，以殼聚糖和粉煤灰為原料，用NaOH溶液作為改性液制備殼聚糖聯(lián)合改性粉煤灰吸附劑，探究對廢水中亞甲基藍的吸附性能并擬合其動(dòng)力學(xué)方程。結果表明，當殼聚糖與粉煤灰聯(lián)合吸附劑質(zhì)量比為0.03時(shí)，對廢水中亞甲基藍的吸附效果較佳。通過(guò)設計正交實(shí)驗考察各因素對吸附效率的影響程度，結果表明，對于50 mL的100 mg·L-1亞甲基藍溶液的較優(yōu)吸附條件為：溫度為85 ℃、pH=6，加入5 g吸附劑吸附60 min。該吸附條件下，溶液中的亞甲基藍去除效率大于95%，吸附過(guò)程符合準二級動(dòng)力學(xué)模型。 |
| 關(guān)鍵詞：殼聚糖；改性粉煤灰；亞甲基藍；吸附動(dòng)力學(xué) |
| 中圖分類(lèi)號：X788 文獻標識碼：A 文章編號：1009-9212（2020）05-0068-05 |
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| Adsorption of Methylene Blue in Wastewater by Chitosan Combined with Modified Fly Ash |
| ZHANGX Xin-yu1, CHAI Tao1*, GENG Zhen-xiang2, LIU Deng-deng1, WU Kai1, ZHANG Xing1
(1. College of Environmental and Safety Engineering, North University of China, Taiyuan 030051, China; 2. Department of Environmental and Safety Engineering, Taiyuan Institution of Technology, Taiyuan 030008, China) |
| Abstract：In order to reduce the treatment cost of dye wastewater and realize the purpose of "treating waste with waste", in this experiment, chitosan and fly ash used as raw materials and NaOH solution as modifier to prepare chitosan modified fly ash adsorbent. Its adsorption performance on methylene blue in wastewater was explored and endeavored to fit its kinetic equation. The results showed that when the mass ratio of combined adsorbent was 0.03, the adsorption effect of methylene blue in wastewater was better. By means of orthogonal experiment, it was found that was better adsorption conditions for 50 mL of 100 mg·L-1 methylene blue solution were as followings: under the condition of temperature 85 ℃, pH=6, adding 5 g adsorbent for 60 min, the removal efficiency of methylene blue in the solution was higher than 95%, and the adsorption process conformed to the pseudo second order kinetic model. |
| Key words：chitosan; modified fly ash; methylene blue; adsorption kinetics |
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基金項目：中北大學(xué)研究生科技立項（20191662）。
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作者簡(jiǎn)介：張新宇（1995—），男，山西長(cháng)治人，碩士研究生，研究方向：污水處理（E-mail：2080598844@qq.com）。
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聯(lián) 系 人：柴濤，教授，研究方向：超臨界水氧化技術(shù)、 微生物技術(shù)等（E-mail：lyc2ct@sina.com）。
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收稿日期：2020-08-15
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