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Water Research
Vol. 129, 2018, Pages: 11-19

Development and modelling of a steel slag filter effluent neutralization process with CO2-enriched air from an upstream bioprocess

Zhidan Liu, Buchun Si, Jiaming Li, Jianwei He, Chong Zhang, Yuan Lu, Yuanhui Zhang, Xin-Hui Xing

Laboratory of Environment-Enhancing Energy (E2E), and Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture; College of Water, Resources and Civil Engineering, China Agricultural University, Beijing 100083, China.

Abstract

A concept of biohythane production by combining biohydrogen and biomethane together via two-stage anaerobic fermentation (TSAF) has been recently proposed and considered as a promising approach for sustainable hythane generation from waste biomass. The advantage of biohythane over traditional biogas are more environmentally benign, higher energy recovery and shorter fermentation time. However, many of current efforts to convert waste biomass into biohythane are still at the bench scale. The system bioprocess study and scale up for industrial application are indispensable. This paper outlines the general approach of biohythane by comparing with other biological processes. The technical challenges are highlighted towards scale up of biohythane system, including functionalization of biohydrogen-producing reactor, energy efficiency, and bioprocess engineering of TSAF.

Graphical abstract

 
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