Citation
Soh Kheang Loh, . and Kah Yein Cheong, . and Yuen May Choo, . and Jumat Salimon, . Formulation and optimisation of spent bleaching earth-based bio organic fertiliser. pp. 57-66. ISSN 1511-2780
Abstract
Spent bleaching earth (SBE) generated from the palm oil refinery is convertible into value-added products instead of being discarded as waste to landfills. An alternative approach is to develop SBE-based bio organic fertiliser through co-utilisation with other sources of biomass of contrasting nutrients properties. The feasibility of blending SBE with various forms of biomass “ oil palm trunk (OPT) oil palm frond (OPF) empty fruit bunch (EFB) and chicken litter (CL) “ in different mixing ratios was studied and its optimum ratio determined. The mixtures of SBE and various biomass at different mixing ratios were analysed for their macronutrient and micronutrient content pH organic carbon (OC) total nitrogen carbon:nitrogen ratio (C:N) and organic matter (OM) content. The optimised blend of SBE:OPT:CL at the ratio of 1:1:0.5 exhibited sufficient nutrient contents (N: P2O5: K2O 0.65:1.59:1.63) and good physicochemical properties (pH 5.4 OM 40 and C:N 36:1) as a base material for bio organic fertiliser production. This optimum formulation was further enriched with urea (46 N) Christmas Island rock phosphate (CIRP 25 P2O5) and muriate of potash (MOP 66 K2O) to produce a bio organic fertiliser suitable for vegetable crops with desired nutrients N:P2O5:K2O ratio of 2:2:2.
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Abstract
Spent bleaching earth (SBE) generated from the palm oil refinery is convertible into value-added products instead of being discarded as waste to landfills. An alternative approach is to develop SBE-based bio organic fertiliser through co-utilisation with other sources of biomass of contrasting nutrients properties. The feasibility of blending SBE with various forms of biomass “ oil palm trunk (OPT) oil palm frond (OPF) empty fruit bunch (EFB) and chicken litter (CL) “ in different mixing ratios was studied and its optimum ratio determined. The mixtures of SBE and various biomass at different mixing ratios were analysed for their macronutrient and micronutrient content pH organic carbon (OC) total nitrogen carbon:nitrogen ratio (C:N) and organic matter (OM) content. The optimised blend of SBE:OPT:CL at the ratio of 1:1:0.5 exhibited sufficient nutrient contents (N: P2O5: K2O 0.65:1.59:1.63) and good physicochemical properties (pH 5.4 OM 40 and C:N 36:1) as a base material for bio organic fertiliser production. This optimum formulation was further enriched with urea (46 N) Christmas Island rock phosphate (CIRP 25 P2O5) and muriate of potash (MOP 66 K2O) to produce a bio organic fertiliser suitable for vegetable crops with desired nutrients N:P2O5:K2O ratio of 2:2:2.
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | Palm oils |
| AGROVOC Term: | Bleaching |
| AGROVOC Term: | Biomass |
| AGROVOC Term: | Plant nutrition |
| AGROVOC Term: | Raw materials |
| AGROVOC Term: | Fertilizers |
| AGROVOC Term: | Blending |
| AGROVOC Term: | Chemical composition |
| AGROVOC Term: | Physicochemical properties |
| AGROVOC Term: | Micronutrients |
| Geographical Term: | Malaysia |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 30 Apr 2025 01:15 |
| URI: | http://webagris.upm.edu.my/id/eprint/24356 |
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