Integrated electrochemical and anaerobic treatment of rose processing wastewater: Investigating biogas efficiency and pollutant reduction
Journal of Environmental Management, cilt.396, 2025 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 396
- Basım Tarihi: 2025
- Doi Numarası: 10.1016/j.jenvman.2025.128084
- Dergi Adı: Journal of Environmental Management
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, BIOSIS, Compendex, EMBASE, Environment Index, Geobase, Greenfile, Index Islamicus, Public Affairs Index, Social Sciences Abstracts
- Anahtar Kelimeler: Anaerobic digestion (AD), Electro-coagulation (EC), Electro-oxidation (EO), Hybrid treatment system, Pre-treatment, Rose processing wastewater (RPW)
- Süleyman Demirel Üniversitesi Adresli: Evet
Özet
This study investigates the effect of two electrochemical pre-treatment methods, Electro-Oxidation (EO) and Electro-Coagulation (EC), on subsequent anaerobic digestion (AD) of Rose Processing Wastewater (RPW), a high-strength organic wastewater with limited existing treatment strategies. The primary aim was to evaluate the pollutant removal efficiency of both processes and identify the most effective method as a pre-treatment step for enhancing biogas production through AD. The performance of the EO and EC processes was evaluated as a function of current density, with treatment efficacy determined by monitoring key post-treatment water quality parameters: Total Phenolic Compounds (TPh), Chemical Oxygen Demand (COD), and Carbohydrates (CH). Subsequently, the optimized pretreatment method was integrated with AD to evaluate its impact on biogas production efficiency and the degradation of organic pollutants. Substrate to inoculum ratios (SIR) were also varied to determine the most favorable conditions for anaerobic biodegradability. A parallel control experiment using unpretreated RPW was performed under the same AD conditions to establish the specific contribution of the pretreatment stage. Results demonstrated significant improvements in pollutant removal (1.05–1.72-fold COD removal) and methane production yield (1.3–2.6-fold increase) with the hybrid treatment approach. A key novelty of this study is the systematic application of EO and EC pretreatments to RPW, an area that has received limited attention. Furthermore, this study addresses a critical knowledge gap by providing a comprehensive evaluation of how these pretreatments impact subsequent biogas production efficiency within an AD system. This integrated approach offers a promising and sustainable strategy for managing RPW with enhanced energy recovery potential.