Preparation of bio-polymeric ferric sulfate based on membrane separation technology

GUAN Xiaohui; ZHANG Donghui; ZHANG Mingyuan; QIN Yuhua

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Preparation of bio-polymeric ferric sulfate based on membrane separation technology

更新时间：2025-12-10

- Preparation of bio-polymeric ferric sulfate based on membrane separation technology
- CIESC Journal Issue 10, Pages: 2622-2626(2008)
- 作者机构：
  
  东北电力大学化学工程学院
- 作者简介：
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- Online First：05 October 2008，
  
  Published：05 October 2008
- 稿件说明：
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GUAN Xiaohui, ZHANG Donghui, ZHANG Mingyuan, et al. Preparation of bio-polymeric ferric sulfate based on membrane separation technology[J]. CIESC Journal, 2008, (10): 2622-2626.
DOI：

GUAN Xiaohui, ZHANG Donghui, ZHANG Mingyuan, et al. Preparation of bio-polymeric ferric sulfate based on membrane separation technology[J]. CIESC Journal, 2008, (10): 2622-2626. DOI：

摘要

开展基于膜分离技术优化反复序批式工艺制备生物聚合铁（BPFS）的技术研究。考察了应用聚偏氟乙烯中空纤维微滤膜（PVDF）对微生物的分离效果，Fe2+的生物催化氧化速率，制备周期及膜的污染与处理的情况。研究表明，PVDF膜可有效分离微生物，显著提高原液中的生物量。在优化工艺的基础上，制备了全铁含量分别为60、80、100 kg·m-3 BPFS，Fe2+的生物催化氧化速率分别达到1.75、1.85、1.43 g·L-1·h-1，制备周期分别为15.5、21、40 h，比工艺优化前分别缩短了38%、42%、18%，反应液中的生物量达到108 个·ml-1数量级。实验中发现，随着分离次数和全铁含量的增加，膜污染加剧，膜通量下降;采用0.2 mol·L-1的草酸钠和0.2 mol·L-1硫酸的混合溶液对PVDF膜进行清洗，可基本清除膜表面的污染物，满足分离要求。

Abstract

Based on the membrane separation technology

biopolymeric ferric sulfate (BPFS) was prepared with the optimized sequential batch processThe effect on separation of microorganisms

biocatalytical oxidation rate of Fe2+

preparation periods and membrane pollution were investigated by using polyvinylidene fluoride hollow fiber membrane (PVDF) to separate microorganismsThe results showed that the biomass in BPFS obviously increased through the membrane separation processBy using the optimized process

the BPFS with total iron contents of 60kg·m-3

80kg·m-3

100kg·m-3 were preparedThe biocatalytical oxidation rate of Fe2+ reached 1.75 g·L-1·h-1

1.85 g·L-1·h-1

1.43 g·L-1·h-1 

preparation periods were 155h

21h

40h

a decrease by 38%

42%

18% respectively as against the process before optimizationThe biomass in BPFS reached the order of magnitude of 108 num·ml-1With the increase of separation time and the content of total iron of BPFS

membrane pollution was intensified seriously

and membrane flux decreased obviouslyPVDF was cleaned by a mixture of 0.2 mol·L-1sodium oxalate and 0.2 mol·L-1sulfuric acid

and the scavenger can clean out the fouls from the membrane surface and satisfy the separation requirement.

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