Biochar-seeded struvite precipitation for simultaneous nutrient recovery and chemical oxygen demand removal in leachate: From laboratory to pilot scale.

ABSTRACT: Refuse transfer station (RTS) leachate treatment call for efficient methods to increase nutrient recovery (NH₄ ⁺-N and PO₄ ^3--P) and chemical oxygen demand (COD) removal. In this study, the effects of various operational factors (seeding dose, pH, initial NH₄ ⁺-N concentration, and reaction time) on biochar-seeded struvite precipitation were investigated at laboratory and pilot scales. Mealworm frass biochar (MFB) and corn stover biochar (CSB) were used as seeding materials to compare with traditional seed struvite. The maximum NH₄ ⁺-N and PO₄ ^3--P recover efficiency of the MFB-seeded process reached 85.4 and 97.5%, higher than non-seeded (78.5 and 88.0%) and CSB-seeded (80.5 and 9

SUBMITTER: Wang S 

PROVIDER: S-EPMC9452965 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature