Hydrothermal Carbonization of Coconut Pulp and the Adsorption Activity toward Methylene Blue

سال انتشار: 1403
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 33

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شناسه ملی سند علمی:

JR_AJCS-7-4_003

تاریخ نمایه سازی: 29 اردیبهشت 1403

چکیده مقاله:

This study aimed to investigate alterations in the physical and chemical properties resulting from hydrothermal carbonization process applied to dried coconut pulp samples. The samples were passed through a ۵۰-mesh sieve, immersed in demineralized water, and subjected to heating in an autoclave soaked in silicone oil at ۲۰۰ °C for ۵ hours. Hydrochar product (HTC-coconut pulp) of the treatment is a black powder characterized using several instruments. The results of X-ray diffraction (XRD) analysis showed that the peaks in coconut pulp occurred at ۲θ: ۱۶.۱°, ۲۰.۳°, and in the corresponding HTC-coconut pulp at ۲θ: ۲۰.۲°, ۲۱.۲°. Meanwhile, analysis using FTIR showed a significant change where the peaks were at wavenumber (cm-۱) ۳۶۰۳, ۲۹۲۶, ۲۸۵۵, ۱۷۴۶, ۱۴۶۲, ۱۳۷۲, and ۱۱۵۵. The peaks detected in HTC-coconut pulp were at wavenumber (cm-۱) ۲۹۲۹, ۲۸۴۹, ۱۷۱۳, ۱۴۶۸, ۱۲۹۰, ۱۱۱۷, and ۱۰۵۷. The results of X-ray fluorescence (XRF) analysis showed several elements such as Al, P, S, Cl, K, and Ca, while HTC-coconut pulp showed Al, Si, P, S, Cl, K, and Ca. A simple application of the two types of materials was as an adsorbent for a simulated methylene blue (MB) solution. According to UV-Vis spectrophotometry absorbance before and after treatment, HTC-coconut pulp showed a slightly higher absorbency compared to normal coconut pulp.

نویسندگان

Octakireina Liesaini Daefisal

Department of Chemistry, Institut Teknologi Sumatera (ITERA), Jl. Terusan Ryacudu, Way Huwi, Kec. Jati Agung, Province of Lampung, Indonesia

Demi Dama Yanti

Department of Chemistry, Institut Teknologi Sumatera (ITERA), Jl. Terusan Ryacudu, Way Huwi, Kec. Jati Agung, Province of Lampung, Indonesia

Muhamad Alvin Reagen

Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Bengkulu (UNIB), Jalan W.R, Supratman, Kandang Limun, Kota Bengkulu ۳۸۱۲۲, Indonesia

Salprima Yudha S

Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Bengkulu (UNIB), Jalan W.R, Supratman, Kandang Limun, Kota Bengkulu ۳۸۱۲۲, Indonesia

John Hendri

Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Lampung (UNILA), Jalan Sumantri Brojonegoro No. ۱ Bandar Lampung, ۳۵۱۴۵, Indonesia

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