Performance and mechanism of Pb<sup>2+</sup> removal by phosphorus removal granular sludge

LI Xiaojia; WANG Randeng; RONG Hongwei; CAO Yongfeng; LI Cuicui

doi:10.11949/j.issn.0438-1157.20170805

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Performance and mechanism of Pb²⁺ removal by phosphorus removal granular sludge

更新时间：2025-12-10

- Performance and mechanism of Pb²⁺ removal by phosphorus removal granular sludge
- CIESC Journal Issue 4, Pages: 1663-1669(2018)
- 作者机构：
  
  1. 广州大学土木工程学院,广东,广州,510006
  2. 中国市政工程东北设计研究总院有限公司,吉林,长春,130021
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20170805
  CLC： 703.1
- Online First：05 April 2018，
  
  Published：05 April 2018
- 稿件说明：
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LI Xiaojia, WANG Randeng, RONG Hongwei, et al. Performance and mechanism of Pb²⁺ removal by phosphorus removal granular sludge[J]. CIESC Journal, 2018, (4): 1663-1669. DOI: 10.11949/j.issn.0438-1157.20170805.
DOI：

LI Xiaojia, WANG Randeng, RONG Hongwei, et al. Performance and mechanism of Pb²⁺ removal by phosphorus removal granular sludge[J]. CIESC Journal, 2018, (4): 1663-1669. DOI: 10.11949/j.issn.0438-1157.20170805. DOI：

摘要

以好氧颗粒污泥的吸附作用和磷酸盐对重金属的螯合作用为基础，采用富含磷酸盐的生物除磷颗粒污泥作为吸附剂来处理含铅废水，考察了不同吸附条件（pH、Pb2+的初始浓度、吸附反应时间）下，颗粒污泥对Pb2+的去除效果。结果表明，除磷颗粒污泥在pH为4，初始Pb2+浓度为150 mg·L-1时，对铅的去除率最高（为99.9%）；在吸附反应20 min时即可达到吸附平衡。生物除磷颗粒污泥对Pb2+的吸附可以用Langmuir模型拟合（R2=0.993），最大吸附量为49.5 mg·g-1。其中离子交换和磷酸盐与Pb2+的螯合作用对除磷颗粒污泥去除Pb2+起到重要作用；傅里叶变换红外光谱（FTIR）测定表明—COOH、—OH、磷酰基等多种官能团也参与了除磷颗粒污泥除Pb2+过程。

Abstract

In this study

based on the adsorption of aerobic granular sludge and the chelating action of phosphate on heavy metals

phosphate containing biological phosphorus removal granular sludge was used as adsorbent to treat Pb2+ containing wastewater

and the removal efficiency of Pb2+ by granular sludge under different adsorption conditions was investigated. The results showed that the highest removal efficiency of Pb2+ (up to 99.9%) was achieved under the optimal adsorption conditions (pH=4 and the initial concentration of Pb2+ 150 mg·L-1)

and the adsorption equilibrium reached in 20 min. The adsorption of Pb2+ by biological phosphorus removal granular sludge can be described by Langmuir model. The correlation coefficient R2 was 0.993

and the maximum adsorption quantity was about 49.5 mg·g-1. Ion exchange and chelation of phosphate with Pb2+ played a significant role in the removal of Pb2+ by using the phosphorus removal granular sludge. The results of Fourier transform infrared spectroscopy (FTIR) indicated that a variety of functional groups such as -COOH

-OH and phosphoryl were involved in the removal of Pb2+ by phosphorus removal granular sludge.

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Performance and mechanism of Pb2+ removal by phosphorus removal granular sludge

DOI：10.11949/j.issn.0438-1157.20170805

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Abstract

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Performance and mechanism of Pb²⁺ removal by phosphorus removal granular sludge