Investigating the effectiveness of anaerobic digestion in the treatment of sugarcane industry wastewater: A systematic review and meta-analysis

Abstract

Treatment of wastewater produced by industries and their environmental pollution has been challenging. This review study aimed to investigate the effectiveness of anaerobic digesters in the treatment of sugarcane industry wastewater. To perform a meta-analysis, a random-effects model, Q-test, and I2 statistics were used. Moreover, sensitivity analysis and subgrouping were used to investigate the source of heterogeneity. All statistical analyses were performed using Stata 14.1. After reviewing the related articles, 13 published studies met the criteria to enter the present research. The result of the integration of these studies was 79%, and the type of wastewater was found to affect heterogeneity. Also, the highest and lowest amounts were attributed to Mexico and Japan, respectively. It was concluded that the anaerobic digesters were a suitable option for the treatment of various sugarcane wastewater, stressing the point that Vinasse wastewater required different operating conditions.

Keywords

• Wastewater industry
• Anaerobic digester
• Treatment
• Effectiveness
• Review