Heterogeneous biochars from agriculture residues and coal fly ash for the removal of heavy metals from coking wastewater.

ABSTRACT: While we have started down the path towards a global transition to a green economy, as with most things we began with the "low-hanging fruit," such that increasingly difficult material and chemical conversions remain. Coking is one such example; it is unlikely that steel production will transition away from using coking coal anytime in the near future, such that coking wastewater remains a global environmental challenge. However, we can develop greener methods and materials to treat such waste. The present work demonstrates how wheat straw, an abundant agricultural residue, can be co-pyrolyzed and co-activated with coal fly ash to produce a high surface area biochar. Coal fly ash has previously been shown to promote devolatilization and deoxygenation of pyrolyzed biofuels. This work shows

SUBMITTER: Gao L 

PROVIDER: S-EPMC9064278 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature