Browse by author
Lookup NU author(s): Professor David WernerORCiD
Full text for this publication is not currently held within this repository. Alternative links are provided below where available.
© 2023 Elsevier LtdPelletizing biochar enables its use as a biofilter medium for polluted canal water treatment. Coconut husk biochar pellets and their modification with chitosan (CHC) were compared with conventional activated carbon pellets and gravel. The biofilter columns with these media were operated with a hydraulic loading rate of 0.1 m3/m2∙h. CHC showed the highest potential to reduce phosphate and nitrogen, via the adsorption process in the first week of filtration and later enhanced by biodegradation, to achieve removal efficiencies of 61.70 and 54.37% for these two key nutrients, respectively, over five weeks of biofilter operation. The predominant bacteria in the biofilter communities were characterized at the end of the experiments by next generation sequencing and quantitative polymerase chain reaction analysis. The biofilter communities included ammonium oxidizing, nitrite oxidizing, denitrifying, polyphosphate accumulating and denitrifying phosphate-accumulating bacteria that benefit nutrient removal. The CHC biofilter also effectively removed micropollutants, including pharmaceuticals.
Author(s): Thongsamer T, Vinitnantharat S, Pinisakul A, Werner D
Publication type: Article
Publication status: Published
Journal: Environmental Pollution
Year: 2023
Volume: 334
Print publication date: 01/10/2023
Online publication date: 03/07/2023
Acceptance date: 01/07/2023
ISSN (print): 0269-7491
ISSN (electronic): 1873-6424
Publisher: Elsevier Ltd
URL: https://doi.org/10.1016/j.envpol.2023.122137
DOI: 10.1016/j.envpol.2023.122137
PubMed id: 37406752
Altmetrics provided by Altmetric
