Surface amination of activated carbon and petroleum coke for the removal of naphthenic acids and treatment of oil sands process-affected water (OSPW)

被引：64

作者：

Niasar, Hojatallah Seyedy ^{[1
]}

Li, Hanning ^{[1
]}

Kasanneni, Tirumala Venkateswara Rao ^{[1
]}

Ray, Madhumita B. ^{[1
]}

Xu, Chunbao ^{[1
]}

机构：

[1] Univ Western Ontario, Dept Chem & Biochem Engn, Room 2335,Claudette MacKay Lassonde Pavil, London, ON N6A 5B9, Canada

来源：

CHEMICAL ENGINEERING JOURNAL | 2016年 / 293卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Activated carbon; Petroleum coke activated carbon; KOH activation; Surface amination; Naphthenic acids; Oil sands process-affected water; ADSORPTION; TOXICITY; OZONATION;

D O I：

10.1016/j.cej.2016.02.062

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

To enhance the removal of model naphthenic acids (NA) from synthetic wastewater and removal of organics in oil sands process-affected water (OSPW) by adsorption, surfaces of commercial charcoal derived activated carbon (AC) and proprietary petroleum coke-derived activated carbon (PAC) were modified. Two different amination processes including a single stage treatment with ammonia gas at an elevated temperature and a two-step treatment of nitration followed by reduction were adopted. All adsorbents showed excellent capacity for the model NAs and OSPW at low pH (<= 4.0). Ammonia treatment was more effective on improvement of adsorption capacity than the nitration followed by reduction method. The effect was more significant for commercial activated carbon compared to PAC, especially for multi-component adsorption at pH 8.0. The kinetics of adsorption improved significantly by the surface modification methods indicating great potential for these adsorbents in continuous column operation. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：189 / 199

页数：11

共 33 条

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