Work

Biochar from waste green coffee extracted bioactive compounds as materials for ammonium adsorption

Year: 2024

Type: article

Abstract: This study investigates the adsorption potential of AC-GCB biochar, obtained by pyrolyzing green coffee extracted bioactive compounds at 400 ºC, for ammonium removal from groundwater. The biochar's microstructure was characterized using scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FTIR), and Energy dispersive spectrometry (EDS) Mapping. Optimal adsorption conditions were observed at an initial pH range of 4 to 8, an initial NH4+ concentration of ≤ 25 mg.L-1, and a biochar dose of 10 g.L-1. The ammonium adsorption of AC-GCB was consistent with both Langmuir and Freundlich's adsorption theories (R2 > 0.92). The AC-GCB biochar obtained the maximum adsorption capacity Qm was 14,48 mg.g-1, higher than the control BC-GCB biochar that pyrolysised without bioactive compound extracted with Qm was only 5.41 mg.g-1.

Source: Vietnam Journal of Science and Technology/Science and Technology

DOI: 10.15625/2525-2518/17989

Authors: Hoai Linh Nguyen, Kim Chi Ngo, Le Minh Tran, Ngoc Phuong Dang, Xuan Tung Nguyen, Thuy Tien Do, Hong Minh Pham Thi

Institutions: Vietnam Academy of Science and Technology, Trường Đại học Khoa học và Công nghệ Hà Nội, Hanoi University of Science and Technology, Hanoi Pedagogical University 2

Language: English

Topic: Adsorption and biosorption for pollutant removal

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

SDGs: Clean water and sanitation, Responsible consumption and production, Climate action

Open Access status: diamond

OpenAlex ID: W4392555893

FWCI:

Cites: 14

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Related to: 10