Formulation and optimisation of spent bleaching earth-based bio organic fertiliser

Soh Kheang Loh, Kah Yein Cheong, Yuen May Choo, Jumat Salimon

Research output: Contribution to journalArticle

3 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)57-66
Number of pages10
JournalJournal of Oil Palm Research
Volume27
Issue number1
Publication statusPublished - 1 Mar 2015

Fingerprint

phosphorus pentoxide
Fertilizers
Bleaching
bleaching
Palm oil
Biomass
Nitrogen
Carbon
Earth (planet)
Elaeis guineensis
Food
Chickens
Nutrients
Oils
Waste Disposal Facilities
Organic carbon
Micronutrients
carbon nitrogen ratio
Biological materials
tree trunk

Keywords

  • Bio organic fertiliser
  • Oil palm biomass
  • Plant nutrient
  • Soil amendment
  • Spent bleaching earth

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Food Science
  • Renewable Energy, Sustainability and the Environment
  • Biomaterials

Cite this

Loh, S. K., Cheong, K. Y., Choo, Y. M., & Salimon, J. (2015). Formulation and optimisation of spent bleaching earth-based bio organic fertiliser. Journal of Oil Palm Research, 27(1), 57-66.

Formulation and optimisation of spent bleaching earth-based bio organic fertiliser. / Loh, Soh Kheang; Cheong, Kah Yein; Choo, Yuen May; Salimon, Jumat.

In: Journal of Oil Palm Research, Vol. 27, No. 1, 01.03.2015, p. 57-66.

Research output: Contribution to journalArticle

Loh, SK, Cheong, KY, Choo, YM & Salimon, J 2015, 'Formulation and optimisation of spent bleaching earth-based bio organic fertiliser', Journal of Oil Palm Research, vol. 27, no. 1, pp. 57-66.
Loh, Soh Kheang ; Cheong, Kah Yein ; Choo, Yuen May ; Salimon, Jumat. / Formulation and optimisation of spent bleaching earth-based bio organic fertiliser. In: Journal of Oil Palm Research. 2015 ; Vol. 27, No. 1. pp. 57-66.
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