基于脲酶诱导碳酸钙沉淀的新型扬尘抑制剂

蒋耀东; 黄娟; 张雷; 张雪

doi:10.12030/j.cjee.201701105

环境工程学报

基于脲酶诱导碳酸钙沉淀的新型扬尘抑制剂

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蒋耀东, 黄娟, 张雷, 张雪. 基于脲酶诱导碳酸钙沉淀的新型扬尘抑制剂[J]. 环境工程学报, 2017, 11(9): 5097-5103. doi: 10.12030/j.cjee.201701105

引用本文:

蒋耀东, 黄娟, 张雷, 张雪. 基于脲酶诱导碳酸钙沉淀的新型扬尘抑制剂[J]. 环境工程学报, 2017, 11(9): 5097-5103. doi: 10.12030/j.cjee.201701105

JIANG Yaodong, HUANG Juan, ZHANG Lei, ZHANG Xue. New dust-depressor using urease induced calcite precipitation[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 5097-5103. doi: 10.12030/j.cjee.201701105

Citation:

JIANG Yaodong, HUANG Juan, ZHANG Lei, ZHANG Xue. New dust-depressor using urease induced calcite precipitation[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 5097-5103. doi: 10.12030/j.cjee.201701105

基于脲酶诱导碳酸钙沉淀的新型扬尘抑制剂

1.
东南大学土木工程学院市政, 南京 210096
基金项目:
江苏省政策引导类计划（产学研合作、软科学研究）（BY2015070-03）
中图分类号: X513

New dust-depressor using urease induced calcite precipitation

1.
School of Civil Engineering, Southeast University, Nanjing 210096, China
Fund Project:

摘要: 为研制出一种持续时间长、减少二次扬尘、耐高温、绿色环保的扬尘抑制剂，利用脲酶诱导碳酸钙沉淀的方法，确定了脲酶抑尘剂的最佳成分配比为脲酶30 g·L-1、尿素0.8 mol·L-1、氯化钙0.8 mol·L-1、高分子吸水树脂1 g·L-1。此外还选取了纯水、氯化钙和高分子吸水树脂这3种抑尘剂与脲酶抑尘剂进行性能对比。结果表明：脲酶抑尘剂的蒸发率为0.04 g·（m2·s）-1、失水率23.7%、抗风指数27.8、抑尘效率70.7%。其抗蒸发性、保水性、抗风性能和抑尘效率都要优于其他3种抑尘剂。
- 脲酶诱导碳酸钙沉淀 /
- 抑尘剂 /
- 成分配比 /
- 应用性能
Abstract: To develop a new type of dust-depressor which has the characteristics of longer residual action, secondary dust reduction, high temperature resistance and environmental protection. Best proportions (30 g·L-1 of urease, 0.8 mol·L-1 of urea, 0.8 mol·L-1 of calcium chloride and 1 g·L-1 super absorbent polymer) of urease dust-depressor have been determined by utilizing a method of urease inducing calcite precipitation. In addition, pure water, CaCl2 and super absorbent polymer are chosen to compare with urease dust-depressor on the performance. The results showed that the urease dust-depressor possesses 0.04 g·(m2·s)-1 of evaporation rate, 23.7% of driage, 27.8 of wind resistance index, 70.7% of dust suppression efficiency, which are superior to the other 3 dust-depressors on the performance of evaporation and wind resistance, water retentivity, and dust suppression efficiency.
- urease induced calcite precipitation /
- dust-depressor /
- composition proportion /
- application performance

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基于脲酶诱导碳酸钙沉淀的新型扬尘抑制剂

1. 东南大学土木工程学院市政, 南京 210096

收稿日期: 2017-04-19

基金项目:

江苏省政策引导类计划（产学研合作、软科学研究）（BY2015070-03）

关键词:

摘要: 为研制出一种持续时间长、减少二次扬尘、耐高温、绿色环保的扬尘抑制剂，利用脲酶诱导碳酸钙沉淀的方法，确定了脲酶抑尘剂的最佳成分配比为脲酶30 g·L-1、尿素0.8 mol·L-1、氯化钙0.8 mol·L-1、高分子吸水树脂1 g·L-1。此外还选取了纯水、氯化钙和高分子吸水树脂这3种抑尘剂与脲酶抑尘剂进行性能对比。结果表明：脲酶抑尘剂的蒸发率为0.04 g·（m2·s）-1、失水率23.7%、抗风指数27.8、抑尘效率70.7%。其抗蒸发性、保水性、抗风性能和抑尘效率都要优于其他3种抑尘剂。

English Abstract

New dust-depressor using urease induced calcite precipitation

1. School of Civil Engineering, Southeast University, Nanjing 210096, China

Received Date: 2017-04-19

Fund Project:

Keywords:

Abstract: To develop a new type of dust-depressor which has the characteristics of longer residual action, secondary dust reduction, high temperature resistance and environmental protection. Best proportions (30 g·L-1 of urease, 0.8 mol·L-1 of urea, 0.8 mol·L-1 of calcium chloride and 1 g·L-1 super absorbent polymer) of urease dust-depressor have been determined by utilizing a method of urease inducing calcite precipitation. In addition, pure water, CaCl2 and super absorbent polymer are chosen to compare with urease dust-depressor on the performance. The results showed that the urease dust-depressor possesses 0.04 g·(m2·s)-1 of evaporation rate, 23.7% of driage, 27.8 of wind resistance index, 70.7% of dust suppression efficiency, which are superior to the other 3 dust-depressors on the performance of evaporation and wind resistance, water retentivity, and dust suppression efficiency.

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基于脲酶诱导碳酸钙沉淀的新型扬尘抑制剂

New dust-depressor using urease induced calcite precipitation

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基于脲酶诱导碳酸钙沉淀的新型扬尘抑制剂

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New dust-depressor using urease induced calcite precipitation

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