Soluble microbial products from the white-rot fungus Phanerochaete chrysosporium as the bioflocculant for municipal wastewater treatment.
Sci Total Environ
; 780: 146662, 2021 Aug 01.
Article
em En
| MEDLINE
| ID: mdl-34030296
ABSTRACT
Soluble microbial products (SMP), a type of polymers released from microbial metabolism and decay, show great potential for wastewater treatment as bioflocculants; however, biogenic flocculant utilization is currently limited to bacterial SMP. In this study, SMP produced by Phanerochaete chrysosporium BKMF-1767 (SMP-P) was investigated to determine the application potential of fungal SMP. SMP-P exhibited high flocculation activity in kaolin suspension at a dosage range of 0.67-0.84 mg/L with Ca2+ assistance, comparable to that of commercial polyacrylamide. The high molecular weight polysaccharides (2.0 × 106-4.7 × 107 Da) in SMP-P, which enabled flocculation via the bridging mechanism and served as the dominant active constituent, were composed of glucose and arabinose at a molar ratio of 1 0.03, with (1 â 4, 6)-linked glucose as the main backbone and a small proportion of branched structures. They contained hydroxyl and carboxyl, effective functional groups for the flocculation process, and displayed parallel self-orientation behavior in water. Efficient chemical oxygen demand removal was achieved during municipal wastewater treatment using SMP-P as the bioflocculant. This study demonstrates the feasibility of utilizing fugal SMP as bioflocculants and provides guidance for their practical application.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Purificação da Água
/
Phanerochaete
Tipo de estudo:
Guideline
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article