期刊论文

Optimization and adsorption characteristics of the α-Fe_2O_3 and activated carbon synergistic adsorption in the treatment of urine wastewater

Zheng, Libing(lbzheng@rcees.ac.cn)

中文

化工进展

1000-6613

2021

40

4

2347-2356

10.16085/j.issn.1000-6613.2020-0950

国家自然科学基金青年基金（51908539）； 人因工程国家重点实验室2019预研基金（6142222190715）；

本校为其他机构

为探究α-Fe2O3与活性炭协同吸附对尿液的处理效果,本文考察了铁炭比、投加量及尿液酸预处理的影响,并重点分析了协同吸附特性。研究发现,铁炭比为0.6时,尿液中总有机碳（TOC）、PO43--P、总磷（TP）的去除率分别为39.51%、71.03%和76.79%,TOC的去除主要依靠活性炭的吸附作用,而PO43--P主要依靠α-Fe2O3的作用,尿液酸预处理可显著强化PO43--P的吸附。TOC和PO43--P的吸附过程均符合Redlich-Peterson吸附等温线模型,为单层吸附和多层吸附共同作用。动力学研究发现,TOC和PO43--P的吸附均可在24h内达到吸附平衡,PO43--P的动力学吸附过程更符合Elovich模型,即不均匀界面上的多层吸附,而TOC的动力学过...

The effects of iron/carbon ratio, absorbent dosage, and acid pretreatment of urine on the synergistic adsorption of α-Fe2O3 and activated carbon (AC) were investigated. Its removal efficiency on urine treatment and characteristics were analyzed and discussed. The results showed that the removal rates of total organic carbon (TOC), PO43--P and TP were 39.51%, 71.03% and 76.79%, respectively, when the iron/carbon ratio was 0.6. The removal of TOC mainly depended on the adsorption of AC, while the removal of PO43--P relied on α-Fe2O3. Acid pretr...