Utilization of pyrolytic char derived from bamboo chips for furfural removal: Kinetics, isotherm, and thermodynamics

ABSTRACT

Bamboo charcoal obtained from the pyrolysis of bamboo chips was used to remove furfural, a representative fermentation inhibitor in hydrolyzates or pyrolysis oil. Kinetics, isotherm, and thermodynamic calculations were performed. The adsorption process can be well depicted by Ho’s pseudo-second-order model. The particle diffusion of homogeneous particle diffusion model (HPDM) and shrinking core model (SCM) was found to be the controlling step. Isotherm analysis indicated the adsorption feature took place by a nonideal adsorption. Thermodynamic calculation suggested that ΔH° > 0, ΔG° < 0, ΔS° > 0, and E_a value was 2.02 kJ/mol. The comparison results demonstrate bamboo charcoal is a promising adsorbent for furfural removal.

KEYWORDS:

• Adsorption kinetic
• furfural
• pyrolytic char
• thermodynamic

Funding

The authors express their great gratitude for the financial supports from the National Natural Science Foundation of China (51376075, 51506071), the Special Fund for Agro-scientific Research in the Public Interest (201303095), and the Fundamental Research Funds for the Central Universities.

Additional information

Funding

The authors express their great gratitude for the financial supports from the National Natural Science Foundation of China (51376075), the National Basic Research Program of China (973 Program 2013CB228102), and the Special Fund for Agro-scientific Research in the Public Interest (201303095).