Bioremediation of high-strength agricultural wastewater using Ochrobactrum sp. strain SZ1

• Main Authors: Neoh, C. H., Lam, C. Y., Ghani, S. M., Ware, I., Sarip, S. H. M., Ibrahim, Z.
• Format: Article
• Published: Springer Verlag 2016
• Subjects: QD Chemistry
• Online Access: http://eprints.utm.my/id/eprint/71813/; https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979008639&doi=10.1007%2fs13205-016-0455-1&partnerID=40&md5=0f280e6d504f1f7ac13173eaecc73fde

The biggest agricultural sector that contributes to the Malaysian economy is the oil palm industry. The effluent generated during the production of crude palm oil known as palm oil mill effluent (POME). POME undergoes anaerobic treatment that requires long retention time and produces large amount of methane that consequently contributes to global warming. In this study, an isolated bacteria was selected based on its ability to degrade kraft lignin (KL) and identified as Ochrobactrum sp. The bacteria were able to treat POME (from anaerobic pond) under the aerobic condition without addition of nutrient, resulting in a significant chemical oxygen demand (COD) removal of 71 %, removal rate of 1385 mg/l/day, and 12.3 times higher than that of the ponding system. It has also resulted in 60 % removal of ammoniacal nitrogen and 55 % of total polyphenolic after 6-day treatment period with the detection of lignocellulolytic enzymes.