Loose and Encased Graphite for Methylene Blue Adsorption: Process Optimization and Principal Component Analysis
文献类型： 外文期刊
作者： Mah, Cheng Yee 1 ; Azhar, Nurul Natasha 1 ; Wong, Voon Loong 2 ; Chen, Yi-Lee 3 ; Yagoub, Sami Abdelrahman Musa 1 ; Teo, Swee Sen 4 ; Su, Shao Feng 5 ; Yeap, Swee Pin 1 ;
作者机构： 1.UCSI Univ, Fac Engn Technol & Built Environm, Dept Chem & Petr Engn, Cheras 56000, Kuala Lumpur, Malaysia
2.Heriot Watt Univ Malaysia, Sch Engn & Phys Sci, Putrajaya 62200, Wilayah Perseku, Malaysia
3.Yuan Ze Univ, Dept Chem Engn & Mat Sci, Biorefinery & Bioproc Engn Lab, Taoyuan, Taiwan
4.UCSI Univ, Fac Appl Sci, Cheras 56000, Kuala Lumpur, Malaysia
5.Inner Mongolia Acad Agr & Anim Husb Sci, Biotechnol Res Ctr, Hohhot 010030, Peoples R China
6.UCSI Cheras Low Carbon Innovat Hub Res Consortium, Kuala Lumpur, Malaysia
关键词： Adsorption; Graphite; Methylene Blue; Principal component analysis; Water remediation
期刊名称：CHEMICAL ENGINEERING & TECHNOLOGY （ 影响因子：2.1； 五年影响因子：1.9 ）
ISSN： 0930-7516
年卷期： 2023 年
页码：
收录情况： SCI
摘要： Graphite is often converted to expanded graphite or graphene for water remediation. However, these processes require extra chemicals and energy. This study tested loose and encased pristine graphite powders for dye removal. The loose graphite exhibited good methylene blue removal (>97 % across pH levels), indicating that pi-pi interaction is the governing factor besides electrostatic attraction. Notably, 5 g of loose graphite led to 100 % removal. Langmuir isotherm fitting disclosed a maximum adsorption capacity of 4.7059 mg g-1. Principal component analysis showed that dye concentration and adsorbent dosage had a greater impact than pH and contact time. However, encasing graphite in a tea bag inhibits adsorption; future studies could explore options facilitating adsorbate penetration into tea bags.
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