| 嗜酸性硫杆菌脱除废镀铝膜表面铝的工艺参数及效果研究 |
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| 引用本文：徐琳琳,张洁娜,顾卫华,王建强,王春梅,李英顺,白建峰.嗜酸性硫杆菌脱除废镀铝膜表面铝的工艺参数及效果研究[J].上海第二工业大学(中文版),2021,(2):87-91 |
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| 基金项目:上海市 II 类高原学科 - 环境科学与工程, 上海第二工业大学重点学科 (XXKZD1602), 上海第二工业大学研究生项目
基金 (EDG19YJ0080) 资助 |
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| 中文摘要:镀铝膜袋是电子产品等的常用包装物, 使用量大, 废弃后铝影响了塑料膜的循环使用。由于缺乏有效和低成
本的方法, 镀铝膜中的金属铝未完全从镀铝膜中提取出来。因此, 需开发新的方法来提高铝塑分离效率, 降低成本,
提高废镀铝膜的再生利用率。通过利用嗜酸菌的产酸能力等作用溶解铝进行铝塑分离, 对包装用废镀铝膜表面铝进
行微生物浸出实验研究, 探究不同镀铝膜粒径、固液比、培养液初始 pH、时间的浸出条件对嗜酸性硫杆菌混合菌株
脱铝率的影响。结果表明, 温度为 30 ℃, 转速为 130 r/min, 嗜酸菌在 pH=1、粒径 <0.5 mm、固液比为 40 时对铝的
浸出率最高可达 83.93%。 |
| 中文关键词:嗜酸性氧化亚铁硫杆菌 嗜酸性氧化硫硫杆菌 镀铝膜 生物浸出 脱铝 |
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| Study on Process Parameters and Effects of Removing Aluminum from Waste Aluminized Film byAcidithiobacillus Spp. |
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| Abstract:Aluminized film bags are common packaging materials for electronic products, etc., and are used in large quantities. The
discarded aluminum affects the recycling of plastic films. Due to the lack of effective and low-cost methods, the metallic aluminum in
the aluminized films has not been completely extracted from the aluminized films. Therefore, there is an urgent need to develop new
methods to improve the efficiency of aluminum-plastic separation, reduce costs, and increase the recycling rate of waste aluminized
films. The aluminum-plastic separation is carried out by using the acid-producing ability of acidophilus and other functions to dissolve
aluminum. The microbial leaching experiment of aluminum on the surface of the waste aluminized films for packaging is carried out to
explore the effect of leaching conditions such as different particle diameters, solid-liquid ratio, and initial culture solution pH and time on the dealumination rate of Acidithiobacillus spp. mixed strains. The results show that at temperature of 30 ℃ and a rotation speed of
130 r/min, the dealuminization rate of acidophilic bacteria can be leached up to 83.93% when the particle size is less than 0.5 mm and
solid-liquid ratio is 40 under the condition of pH=1. |
| keywords:Acidthiobacillus ferrooxidans Acidthiobacillus thiooxidans aluminized film bioleaching dealuminization |
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