Removal of triclocarban from treated wastewater using cell-immobilized biochar as a sustainable water treatment technology

This study examined microbial cells immobilized on waste biochar (from wood vinegar production) as a highly effective advanced wastewater treatment unit for TGC (triclocarban) removal. TGC removal was investigated from real wastewater samples using the following treatments: biochar only, cell-immobi...

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Bibliographic Details
Published inTERI information digest on energy and environment Vol. 20; no. 4; pp. 503 - 504
Main Authors Jenjaiwit, S, Supanchaiyamat, N, Hunt, A J, Ngernyen, Y, Ratpukdi, T, Siripattanakul-Ratpukdi, S
Format Journal Article
LanguageEnglish
Published New Delhi The Energy and Resources Institute 01.12.2021
Subjects
Adsorption
Advanced wastewater treatment
Agricultural wastes
Biodegradation
Cell death
Charcoal
Industrial wastes
Microorganisms
Potassium
Sorbents
Triclocarban
Waste treatment
Wastewater treatment
Water sampling
Water treatment
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Summary:This study examined microbial cells immobilized on waste biochar (from wood vinegar production) as a highly effective advanced wastewater treatment unit for TGC (triclocarban) removal. TGC removal was investigated from real wastewater samples using the following treatments: biochar only, cell-immobilized biochar, and free cell systems in batch (short-term) and semi-batch (longterm) modes. The TGC adsorption capacities of original and potassium hydroxidemodified biochars (no cells) were 8.43 and 9.17 mg/g, respectively. During the batch experiment, the cell-immobilized modified biochar exhibited the highest TGC removal(79.80%) in the model TGC solution. Five-cycle semi-batch experiments were utilized to investigate the reusability and performance of the treatment systems. After five cycles, the cell-immobilized modified biochar still achieved stable TGC removal (52%) due to the integration of adsorption and biodegradation. Free MC46 cells and biochars (no MC46 cells) removed only 32% and 2% of ТСС, respectively, due to cell washout/death and sorbent exhaustion. This important work clearly demonstrates the significant potential for the future utilization of cell immobilized biochars in a sustainable wastewater treatment system. Furthermore, the use of renewable agro-industrial wastes aids in the development of a strong circular bio-based economy. (6 Figures, 3 Tables, 51 References)
ISSN:0972-6721
1875-9297