Surface-active physicochemical characteristics of spent bleaching earth on soil-plant interaction and water-nutrient uptake: A review

Soh Kheang Loh, Kah Yein Cheong, Jumat Salimon

Research output: Contribution to journalReview article

11 Citations (Scopus)

Abstract

The activated or neutral form of bentonite-based spent bleaching earth/clay (SBE) is a by-product generated during the bleaching process in edible oil refinery. Its untreated form is disposed of directly at landfills involving high cost and land area, and possibly causing environmental problems. Recently, this undesirable dumping exercise has been prohibited. To overcome this, SBE is regenerated and reused for value addition, e.g. as bio active materials for water/wastewater treatment. A more recent approach being converting SBE into bio fertilizers; of which the fertilizer characteristics in relation to physical, chemical and biological interaction with soil and its surrounding ecosystem (nutrients, water, pollutants, microorganisms, climate, etc.) is vital in agricultural applications associated with soil fertility management and crops productivity. Previously, SBE's structural characteristics, surface chemistry and activation have been disclosed. This paper provides an insight on soil-crop interactions and agronomy with SBE functions as a soil amendment.

Original languageEnglish
Pages (from-to)59-65
Number of pages7
JournalApplied Clay Science
Volume140
DOIs
Publication statusPublished - 1 May 2017

Fingerprint

nutrient uptake
bleaching
Bleaching
Nutrients
Earth (planet)
Soils
clay
Water
Fertilizers
soil
fertilizer
Crops
agricultural application
water
Water Pollutants
crop
agronomy
soil amendment
Agronomy
Bentonite

Keywords

  • Co-composting
  • Edible oil
  • Plant nutrient
  • Soil amendment
  • Spent clay
  • Waste acid bentonite
  • Wineries

ASJC Scopus subject areas

  • Geology
  • Geochemistry and Petrology

Cite this

Surface-active physicochemical characteristics of spent bleaching earth on soil-plant interaction and water-nutrient uptake : A review. / Loh, Soh Kheang; Cheong, Kah Yein; Salimon, Jumat.

In: Applied Clay Science, Vol. 140, 01.05.2017, p. 59-65.

Research output: Contribution to journalReview article

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