Preparation of biochar with fermented sludge residue by pyrolysis and adsorption of nitrogen and phosphorus

CHENG Weifeng; LI Hui; YANG Yanqin; YIN Bo; BAI Jie; LIU Hongbo; LIU He

doi:10.11949/j.issn.0438-1157.20151036

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Preparation of biochar with fermented sludge residue by pyrolysis and adsorption of nitrogen and phosphorus

更新时间：2025-12-10

- Preparation of biochar with fermented sludge residue by pyrolysis and adsorption of nitrogen and phosphorus
- CIESC Journal Issue 4, Pages: 1541-1548(2016)
- 作者机构：
  
  1. 江南大学环境与土木工程学院,江苏,无锡,214122
  2. 江苏省水处理技术与材料协同创新中心,江苏,苏州,215009
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20151036
  CLC： 705
- Online First：05 April 2016，
  
  Published：05 April 2016
- 稿件说明：
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CHENG Weifeng, LI Hui, YANG Yanqin, et al. Preparation of biochar with fermented sludge residue by pyrolysis and adsorption of nitrogen and phosphorus[J]. CIESC Journal, 2016, (4): 1541-1548.
DOI：

CHENG Weifeng, LI Hui, YANG Yanqin, et al. Preparation of biochar with fermented sludge residue by pyrolysis and adsorption of nitrogen and phosphorus[J]. CIESC Journal, 2016, (4): 1541-1548. DOI： 10.11949/j.issn.0438-1157.20151036.

摘要

以污泥发酵前后的残渣热解制备生物炭

考察发酵前后污泥生物炭的物理性能及其对氨氮、总磷的吸附能力。实验结果表明污泥发酵有利于生物炭孔隙结构的发展

污泥发酵后制备的生物炭(FSBC)比表面积、孔体积均高于未发酵污泥制备的生物炭(SBC)。吸附实验结果表明

对于磷酸盐的吸附

3种材料吸附能力大小为 FSBC > SBC > CAC

对于氨氮的吸附

吸附能力顺序为CAC > FSBC > SBC

污泥发酵后制备的生物炭对氨氮和总磷的吸附能力较未发酵污泥生物炭明显增强。对于实际废水中氮、磷的吸附

其去除率顺序均为CAC > FSBC > SBC

其中CAC和FSBC对总磷的去除率分别为31%和27%

对氨氮的去除率则分别为7%和4%。FSBC与CAC对总磷和氨氮的去除率相差不大。FSBC作为污泥资源化得到的低成本吸附剂

有广阔的研究前景。

Abstract

The physical properties and adsorption capacity of unfermented sludge based biochar (SBC) and fermented sludge based biochar (FSBC) to ammonia and total phosphorus were investigated. Also

their adsorption capacities were compared with commercial activated carbon (CAC). The results indicated that the fermentation was favor of the development of pore structure

and the specific surface area and pore volume of FSBC were higher than that of SBC. The adsorption capacity of phosphate among three carbon materials was FSBC > SBC > CAC

indicating chemical adsorption is the major type for the phosphorous. For ammonia

the result was CAC > FSBC > SBC

suggesting that the adsorption is largely dependent on the physical adsorption. The FSBC adsorption capacity to ammonia and phosphorus was enhanced compared with SBC. When applied in the authentic wastewater

the removal sequence of ammonia and phosphorus was CAC > FSBC > SBC. The phosphorus removal efficiency by CAC and FSBC was 31% and 27%

respectively. And the ammonia removal efficiency by CAC and FSBC was 7% and 4%

respectively. The ammonia and total phosphorus adsorption capacities by FSBC were closed to CAC

which indicated that as a low cost product from the sewage sludge

FSBC was promising for the adsorption of ammonia nitrogen and phosphorus in the future research.

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