Enhancing Slaughterhouse Wastewater Treatment with Oat Husk Biochar

Researchers explored the impact of oat husk-derived biochar on anaerobic slaughterhouse wastewater degradation. Lower concentrations (5, 10 g/L) increased methane yield significantly, especially with powder biochar (35%). Multiple response optimization identified 7.5 g/L of powder biochar as optimal for enhancing methane production and degradation efficiency.

February 7, 2024

1–2 minutes

Pagés Díaz, Jhosané and Vidal, Iván and Huiliñir, Cesar and Hernández, Leslie, Combined Effect of Oat Husk-Biochar Particle Size and Doses for Optimizing the Anaerobic Degradation of Protein and Lipid-Rich Wastewater. Available at SSRN: https://ssrn.com/abstract=4712538 or http://dx.doi.org/10.2139/ssrn.4712538

In a recent study, researchers delved into the promising realm of wastewater treatment, specifically focusing on the anaerobic degradation of slaughterhouse wastewater. The investigation utilized oat husk-derived biocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More at varying dosages (ranging from 0 to 25 g/L) and two distinct particle sizes (powder and granular) to unravel the intricate interplay of these factors.

The study observed a remarkable outcome when biochar was introduced into the mix. Lower concentrations (5, 10 g/L) exhibited significant increases in methane yield, particularly with powder biochar (PB) witnessing a 35% boost, while granular biochar (GB) showed a respectable 11-13% increase. Additionally, all biochar dosages and particle sizes contributed to a noteworthy reduction in total ammoniacal nitrogen, ranging from 14% to 52%.

Further analysis through a multiple response optimization process revealed that an optimal dosage of 7.5 g/L of PB could maximize methane yield, enhance chemical oxygen demand (COD) degradation efficiency, and shorten the lag phase. Intriguingly, lower doses of PB outperformed granular biochar in terms of methane production and organic matter degradation.

This study signifies a promising avenue for sustainable wastewater management, showcasing the potential of oat husk-derived biochar in improving both methane production and the overall efficiency of anaerobic degradation processes.