Ahmed Tawfik*, Nawaf S. Alhajeri, Mohamed Elsamadony* and Fangang Meng,
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引用次数: 0
Abstract
Anaerobic sequencing batch reactors (ASBRs) treating wastewater rich in ciprofloxacin (CIP) were supplemented with an Fe/Zn@biochar catalyst to improve their performance. ASBR4, with 100 mg Fe/Zn@biochar/gVS, showed substantial increased efficiencies in removing COD and CIP, reaching 86.9 ± 5.8 and 80.9 ± 8.6%, respectively, compared to no biochar addition (25.2% and 51.1% higher, respectively). Likewise, biogas yield augmented from 0.17 ± 0.06 to 0.34 ± 0.02 L/g CODremoved owing to the boosted abundance of acetolactic methanogens, i.e., Methanosaeta and Methanosarcina, which increased from 0.4 and 1.6% in the control ASBR1 to 1.6 and 2.2% in ASBR4, respectively. Microbial enzymatic activities, including dehydrogenase and extracellular polymeric substances (EPSs), highly increased by 38% and >100%, respectively, aiding in biochar adsorption and microbial biodegradation synergy. Fe/Zn@biochar contributed to both CIP adsorption and biodegradation with percentages of 59.5 ± 4.9 and 34.7 ± 2.6%, respectively. The synergistic effect between the biotic and abiotic impacts of Fe/Zn@biochar reached 94.2 ± 7.2%, suggesting that the addition of Fe/Zn@biochar is a promising approach to enhance the CIP-remediation process.
期刊介绍：
ACS ES&T Engineering publishes impactful research and review articles across all realms of environmental technology and engineering, employing a rigorous peer-review process. As a specialized journal, it aims to provide an international platform for research and innovation, inviting contributions on materials technologies, processes, data analytics, and engineering systems that can effectively manage, protect, and remediate air, water, and soil quality, as well as treat wastes and recover resources.
The journal encourages research that supports informed decision-making within complex engineered systems and is grounded in mechanistic science and analytics, describing intricate environmental engineering systems. It considers papers presenting novel advancements, spanning from laboratory discovery to field-based application. However, case or demonstration studies lacking significant scientific advancements and technological innovations are not within its scope.
Contributions containing experimental and/or theoretical methods, rooted in engineering principles and integrated with knowledge from other disciplines, are welcomed.
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