Characterization Of phosphoric acid biochar derived from rubber wood sawdust for enhancement Of urea fertilizer impregnation
This paper examines the physiochemical properties of phosphoric acid treated biochar for improvement of urea fertilizer impregnation process. The biochar was heated with phosphoric acid (H3PO4) of 1.5 M (TB1) and 1 M (TB2) concentrations at 80 and 90°C temperature respectively. The treated biochar t...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Asian Research Publishing Network (ARPN)
2019
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| Subjects: | |
| Online Access: | http://eprints.utem.edu.my/id/eprint/24113/2/jeas_0619_7791.pdf http://eprints.utem.edu.my/id/eprint/24113/ http://www.arpnjournals.org/jeas/research_papers/rp_2019/jeas_0619_7791.pdf |
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| Summary: | This paper examines the physiochemical properties of phosphoric acid treated biochar for improvement of urea fertilizer impregnation process. The biochar was heated with phosphoric acid (H3PO4) of 1.5 M (TB1) and 1 M (TB2) concentrations at 80 and 90°C temperature respectively. The treated biochar then were impregnated with 2 wt. % of dissolved urea fertilizer while continuously stirred until the mixture recrystallize to form solid urea impregnated biochar fertilizer (TB1-U and TB2-U). TB1 revealed highest composition of C (66.36%), H (6.53%) and N (1.65%) compared to TB2 composition of C (61.84%), H (4.60%) and N (1.06%). FT-IR results indicated the presence of C-O stretch functional
group at 1200 cm−1 to 900cm−1 wavelength and the presence of aromatic ring (C=O) stretching vibration at 1590cm−1-1550cm-1 wavelength revealed chemical reaction occurred due to phosphoric acid treatment. The microporosity results display more micropores formation on the sample surfaces, thus provide higher surface area possible for urea molecule to be impregnated. SEM-EDX exposed qualitatively and quantitatively the presence of 43% N on TB1-U surfaces compared with slightly lower at 42wt% of N on TB2-U surface evidenced the effectiveness of phosphoric acid treatment on enhancement of the biochar specific surface area to be impregnated with urea for nutrient retained. |
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