Abstract
Industrial grade carbon black was pretreated and used for adsorption of triclosan (TCS) in water, and its adsorption performance was investigated by static adsorption experiments and fixed bed adsorption experiments. The effects of pH and temperature on the adsorption capacity were investigated and the adsorption performance of carbon black and activated carbon on TCS was compared. As the pH or temperature decreased, the adsorption of TCS by carbon black increased. Carbon black had a maximum adsorption capacity of 18.62 mg/g on TCS, which was somewhat lower than the activated carbon. Furthermore, the breakthrough time increased with increasing bed height, decreasing flow rate and decreasing initial TCS concentration in the fixed bed adsorption studies. The breakthrough time was 14.33 days at a bed depth of 4.2 mm, a flow rate of 2 mL/min, and an initial TCS concentration of 0.5 mg/L TCS. The model from The Bed Depth Service Time (BDST) was well-fitting.
Highlights
Adsorbent for Triclosan RemovalTriclosan (TCS), a broad-spectrum bactericide, is commonly found in toothpaste, hand soap, refrigerator deodorant, and other daily necessities products [1]
Sinceit is difficult to degrade, TCS has been found in a variety of water settings in recent years, including surface water, groundwater, seawater, and drinking water, posing a significant threat to the ecological environment and human health [2,3,4]
The carbon black is mostly present in the structure of aggregates and agglomerates, as shown in the isblack mostly present in the structure of aggregates and agglomerates, as shown in the figure, is mostly present in the structure aggregates and agglomerates, as shown in the figure, and the pretreatment carbon blackof has good dispersion
Summary
Adsorbent for Triclosan RemovalTriclosan (TCS), a broad-spectrum bactericide, is commonly found in toothpaste, hand soap, refrigerator deodorant, and other daily necessities products [1]. Physical methods, advanced oxidation technology, and biological treatment technology are the most common TCS treatment methods being used for TCS removal [5,6,7] These technologies, on the other hand, have drawbacks such as high energy consumption, complex operation, and poisonous byproducts. Adsorption methods for removing TCS from water have gained popularity in recent years due to their high efficiency, low energy consumption, and lack of harmful byproducts. The results demonstrated that the adsorption approach removes TCS from water with reasonable effect. Adsorbents such as activated carbon are expensive and difficult to recover, resulting in high treatment costs and resource loss [9]
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