Application of regenerated spent bleaching earth as adsorbent for treatment of palm oil mill effluent

Rusnani Abd Majid, . and Che Rahmat Che Mat, . (2018) Application of regenerated spent bleaching earth as adsorbent for treatment of palm oil mill effluent. Palm Oil Engineering Bulletin (127). pp. 38-44. ISSN 1511-9734

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Abstract

The aim of the present study is to evaluate adsorption capacity of regenerated spent bleaching earth, to decolourise and reduce the biological oxygen demand (BOD) of final discharged of palm oil mill effluent (POME). Different types of spent bleaching earth were used in this study, regenerated using acid and heat treatment after de-oiling (RDSBEAH), spent bleaching earth (SBE), de-oiled spent bleaching earth (DSBE) and new bleaching earth (NBE). Prior to the study, samples were characterised for their surface area, pore volume and functional groups. RDSBE-AH was found to have the highest surface area and pore volume when compared to the other three types of clays with values of 122.3 m² gˉ¹ and 68 cm³ gˉ², respectively. For the decolourisation of POME, RDSBE-AH exhibited higher efficiency than NBE. Higher BOD reduction efficiency was found for NBE as compared to RDSBE-AH. The results demonstrated that the regenerated SBE, activated using combined acid and heat treatments, capable to decolourise and reduce the BOD of the POME final discharge, to comply with the stringent new proposed limits by Department of Environment (DOE).

Item Type: Article
Creators: Rusnani Abd Majid, . and Che Rahmat Che Mat, .
Title: Application of regenerated spent bleaching earth as adsorbent for treatment of palm oil mill effluent
Date: 2018
Location: Malaysian Palm Oil Board website
Publication: Malaysian Palm Oil Board
Number: 127
Physical Description: 7p.
Additional Information: Palm Oil Engineering Bulletin formerly known as Engineering News
Agency Name: Universiti Putra Malaysia (UPM)
Date Deposited: 17 Nov 2025 03:53
Last Modified: 17 Nov 2025 03:53
URI: http://myagric.upm.edu.my/id/eprint/23549

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