Hydrochar from Lansium domesticum and Salacca zalacca Peel as Adsorbent on Rhodamine-B Removal: Adsorption Process and Regeneration Studies

IF 0.6 4区 综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES
Mauizatul Hasanah, A. Wijaya, R. Mohadi, F. Arsyad, A. Lesbani
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引用次数: 0

Abstract

Utilization of duku (Lansium domesticum) peel and salak (Salacca zalacca) peel as rhodamine-B adsorbent was investigated by producing it into hydrochar of duku peel and hydrochar of salak peel by hydrothermal carbonization at 150 °C for 6 hours. XRD shows hydrochar was an amorphous solid (angle of 2ϴ at 30 deg (002)). FTIR characterization of hydrochar showed that hydrochar had the main constituent of the raw material biomass with detected functional groups in the form of -OH, -CH, C=O, and C-O. Wavenumber at FTIR was shifted after adsorption indicated adsorption of rhodamine-B by adsorbent with changes in the structure. Duku peel increased surface area after being hydrochar from 12.343 m2/g to 21.019 m2/g, but salak peel had decreased in surface area from 62.676 m2/g to 23.121 m2/g. The maximum adsorption capacity of duku peel is 58.824 mg/g at 30 °C, HC of duku peel is 114.943 mg/g at 70 °C and salak peel is 92.593 at 30 °C, HC of salak peel is 102.041 mg/g at 30 °C. In this study, the adsorption kinetics and isotherm models follow the PSO kinetic model and Langmuir isotherm with an endothermic and spontaneous adsorption process. Adsorption efficiency in the regeneration process increases from fruit peel to hydrochar and can be used repeatedly in the regeneration process for 3 cycles.
家槐和萨拉卡果皮碳氢化合物对罗丹明- b的吸附及再生研究
以杜鹃(Lansium domesticum)果皮和萨拉卡(Salacca zalacca)果皮为吸附剂,在150℃下水热碳化6小时,分别制备杜鹃果皮和萨拉卡果皮的碳氢化合物。XRD显示水合物为无定形固体(30°角2ϴ(002))。氢炭的FTIR表征表明,氢炭是原料生物质的主要成分,检测到的官能团形式为-OH、-CH、C=O和C-O。吸附后的FTIR波数发生了变化,表明吸附剂对罗丹明- b的吸附发生了结构变化。杜库果皮的比表面积由12.343 m2/g增加到21.019 m2/g,而沙柳果皮的比表面积由62.676 m2/g减少到23.121 m2/g。30℃时,杜鹃皮的最大吸附容量为58.824 mg/g, 70℃时,杜鹃皮的最大吸附容量为114.943 mg/g, 30℃时,杜鹃皮的最大吸附容量为92.593 mg/g, 30℃时,杜鹃皮的最大吸附容量为102.041 mg/g。在本研究中,吸附动力学和等温线模型遵循PSO动力学模型和Langmuir等温线,为吸热自发吸附过程。再生过程中从果皮到烃类的吸附效率提高,可在再生过程中重复使用3个循环。
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来源期刊
Chiang Mai Journal of Science
Chiang Mai Journal of Science MULTIDISCIPLINARY SCIENCES-
CiteScore
1.00
自引率
25.00%
发文量
103
审稿时长
3 months
期刊介绍: The Chiang Mai Journal of Science is an international English language peer-reviewed journal which is published in open access electronic format 6 times a year in January, March, May, July, September and November by the Faculty of Science, Chiang Mai University. Manuscripts in most areas of science are welcomed except in areas such as agriculture, engineering and medical science which are outside the scope of the Journal. Currently, we focus on manuscripts in biology, chemistry, physics, materials science and environmental science. Papers in mathematics statistics and computer science are also included but should be of an applied nature rather than purely theoretical. Manuscripts describing experiments on humans or animals are required to provide proof that all experiments have been carried out according to the ethical regulations of the respective institutional and/or governmental authorities and this should be clearly stated in the manuscript itself. The Editor reserves the right to reject manuscripts that fail to do so.
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