Experimental and modelling study of industrial phenolic wastewater treatment by packed bed adsorption on coal-based and bagasse-based fly ash

IF 0.9 Q4 ENGINEERING, CHEMICAL

Indian Chemical Engineer Pub Date : 2020-12-09 DOI:10.1080/00194506.2020.1852976

Deepak M. Jain, Vasdev Singh

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引用次数: 2

Abstract

ABSTRACT Every year nearly 100 million tons of fly ash is being generated in India and its disposing consumes large land volumes. Fly ash can be used as a good adsorbent to clean flue gases as well as wastewater treatment for effluents containing phenolic compounds. In the present work, fly ash from different sources (coal and bagasse based) was evaluated for wastewater treatment. The work involves (i) batch kinetic studies for adsorption of phenols viz. phenol, catechol, resorcinol, hydroquinone, 2-aminophenol and 3-aminophenol, on fly ash; (ii) the effect of initial solute concentration, initial mass of adsorbent, temperature, contact time and pH on removal of phenols from solution; (iii) determination of adsorption isotherm parameters for three isotherm models namely Freundlich, Langmuir and Fritz–Schlunder; and (iv) mathematical model for packed bed adsorption process using fly ash as an adsorbent for industrial-scale capacity (∼10,000 L/day). The results show that bagasse-based fly ash has much more adsorption capacity (∼80% phenol removal) as compared to coal-based fly ash. GRAPHICAL ABSTRACT

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填料床吸附煤基和甘蔗渣基粉煤灰处理工业酚废水的实验与模型研究

摘要印度每年产生近1亿吨粉煤灰，其处理消耗了大量土地。粉煤灰可以作为一种很好的吸附剂用于清洁烟道气以及处理含有酚类化合物的废水。在本工作中，对来自不同来源（煤和蔗渣基）的粉煤灰进行了废水处理评价。该工作涉及（i）苯酚（即苯酚、邻苯二酚、间苯二酚、对苯二酚、2-氨基苯酚和3-氨基苯酚）在粉煤灰上吸附的分批动力学研究；（ii）初始溶质浓度、吸附剂的初始质量、温度、接触时间和pH对从溶液中去除酚的影响；（iii）三个等温线模型，即Freundlich、Langmuir和Fritz–Schlower的吸附等温线参数的确定；和（iv）使用粉煤灰作为吸附剂的填充床吸附过程的数学模型，工业规模容量（～10000 L/天）。结果表明，与煤基粉煤灰相比，蔗渣基粉煤灰具有更高的吸附能力（~80%的苯酚去除率）。图形摘要

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来源期刊

Indian Chemical Engineer ENGINEERING, CHEMICAL-

CiteScore

3.00

自引率

6.70%

发文量