Steam Gasification of Biochar Derived from the Pyrolysis of Chrome‐Tanned Leather Shavings

Abstract

Abstract Chromium‐treated leather shavings are generated in large quantities by the leather industry. The biochar gasification from leather shavings leads to two main products, a hydrogen‐rich syngas and a chromium‐rich ash. Syngas has found different applications such as electricity generation and chemical manufacturing. The remaining ash potentially can be utilized, e.g., in stainless‐steel production processes. The thermochemical conversion of biochar from chromium‐tanned leather shavings via steam gasification was investigated. The cumulative gas yield and cumulative H 2 yield were determined as well as the total chromium as Cr 2 O 3 in the remaining ash.