Removal of humic acid from composted hog waste by the white-rot fungus, Phanerochaete chrysosporium

Junying Liu, Yunmeng Song, Roger Ruan, Yuhuan Liu

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The potential hazards of humic acid (HA) associated with hog waste effluent, coupled with increasing awareness of environmental problems, have prompted many countries to control disposal of effluents into water bodies and to maximize removal of HA. Here we employed the white-rot fungus, Phanerochaete chrysosporium, to degrade the HA in composted hog waste effluent, evaluated by the response surface method. Preliminary experiments demonstrate that pH, temperature and quantity of inoculum are significant variables determining success of the fungus. In total, 13 experiments were conducted with three variables designated as A (pH), B (temperature) and C (inoculum amount). The optimal conditions for reduction of HA by P. chrysosporium are pH 6, 31.5°C and an inoculum quantity of 5.86 g. Predicted and experimental results exhibit strong agreement, indicating efficiency in the model obtained by response surface method. Therefore, P. chrysosporium is an effective micro-organism for removal of HA from composted hog waste effluent.

Original languageEnglish (US)
Pages (from-to)92-98
Number of pages7
JournalWater Science and Technology
Volume72
Issue number1
DOIs
StatePublished - Jan 1 2015

Keywords

  • Composted hog waste effluent
  • Humic acid
  • Phanerochaete chrysosporium
  • White-rot fungus

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