Removal behaviour of residual pollutants from biologically treated palm oil mill effluent by Pennisetum purpureum in constructed wetland

Farhana Aziz Ujang, Ahmad Muhaimin Roslan, Nurul Atiqah Osman, Ashreen Norman, Juferi Idris, Mohammed Abdillah Ahmad Farid, Mohd Izuan Effendi Halmi, Misri Gozan, Mohd Ali Hassan

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The reason for such enormous efforts in palm oil mill effluent research would be what has been singled out as one of the major sources of pollution in Malaysia, and perhaps the most costly and complex waste to manage. Palm oil mill final discharge, which is the treated effluent, will usually be discharged to nearby land or river since it has been the least costly way to dispose of. Irrefutably, the quality level of the treated effluent does not always satisfy the surface water quality in conformity to physicochemical characteristics. To work on improving the treated effluent quality, a vertical surface-flow constructed wetland system was designed with Pennisetum purpureum (Napier grass) planted on the wetland floor. The system effectively reduced the level of chemical oxygen demand by 62.2 ± 14.3%, total suspended solid by 88.1 ± 13.3%, ammonia by 62.3 ± 24.8%, colour by 66.6 ± 13.19%, and tannin and lignin by 57.5 ± 22.3%. Heat map depicted bacterial diversity and relative abundance in life stages from the wetland soil, whereby bacterial community associated with the pollutant removal was found to be from the families Anaerolineaceae and Nitrosomonadaceae, and phyla Cyanobacteria and Acidobacteria.

Original languageEnglish
Article number18257
JournalScientific reports
Volume11
Issue number1
DOIs
Publication statusPublished - Dec 2021

Fingerprint

Dive into the research topics of 'Removal behaviour of residual pollutants from biologically treated palm oil mill effluent by Pennisetum purpureum in constructed wetland'. Together they form a unique fingerprint.

Cite this