The effect of plastic on performance of activated carbon and study on adsorption of methylene blue
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BUILDING HIERARCHICAL MATERIALS VIA PARTICLE AGGREGATION
The effect of plastic on performance of activated carbon and study on adsorption of methylene blue Peiyong Ma1, Meina Ma1, Jinzhou Wu1, Yuzhi Qian2, Dongqiang Wu3, Xianwen Zhang3,a) 1
School of Mechanical Engineering, Heifei University of Technology, Hefei 230009, China Advanced Energy Technology and Equipment Research Institute, Heifei University of Technology, Hefei 230009, China 3 School of Automotive and Transportation Engineering, Heifei University of Technology, Hefei 230009, China a) Address all correspondence to this author. e-mail: [email protected] This paper has been selected as an Invited Feature Paper. 2
Received: 2 April 2019; accepted: 13 May 2019
Polypropylene plastic (PP) was chosen as additives for the preparation of activated carbon (AC), considering that PP promotes pore formation during the preparation of AC. When the addition ratio of PP was 20%, AC having a maximum specific surface area of 1916.1 m2/g was prepared. Fourier transform–infrared spectroscopy (FT-IR) analysis exhibited the types of functional groups on the surface of AC, such as–OH, C=O, C–C, and –CH. The SEM analysis revealed the formation of disordered pores over the AC. Furthermore, iodine value of the AC is 1460 mg/g. Additionally, adsorption test revealed the AC is suitable for adsorbing methylene blue (MB). The adsorption equilibrium data of MB onto AC were most suitable for Redlich–Peterson model. The maximum adsorption capacity of the single layer was 476.88 mg/g, indicating that AC has high adsorption capacity. The kinetic data fitted well with the pseudo-second-order model.
Introduction Activated carbon (AC) is widely used in industrial fields as well as in civil life because of a high specific surface area, abundant pore volume, variable surface chemical properties and high mechanical strength, as well as strong physical adsorption capacity [1]. AC is mainly used for water purification, wastewater treatment, adsorption of harmful gases, electrode materials, hydrogen storage materials, etc. The traditional AC is mainly made of coal as raw material. However, taking the coal as the precursor was considered costly. In recent years, with the improvement of people’s living standards, the demand for AC is increasing sharply. Therefore, a new cheap material for the preparation of AC is urgently needed to be discovered. Biomass is a kind of agricultural and forestry waste, which has wide sources and low price. Recently, some researchers began to prepare AC from biomass. It was proved that the agricultural by-products can be used for the preparation of AC with a high adsorption capacity for dye [2]. Most of biomass waste reported for preparation AC are bamboo [3], bagasse [4], olive stones [5], and cotton stalk [6]. Recently, plastic products or high-molecular polymer has been investigated for the preparation of AC. Duan Yuandong,
ª Materials Research Society 2019
Song Lingjun, [7] and Hui Li [8] have focused on the preparation of AC from plastic prod
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