The effects of substrate pre-treatment on anaerobic digestion systems: a review |
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| Authors: | Carlsson My Lagerkvist Anders Morgan-Sagastume Fernando |
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| Institution: | 1. Waste Science and Technology, Luleå University of Technology, Luleå, Sweden;2. AnoxKaldnes AB, Klosterängsvägen 11A, 226 47 Lund, Sweden;1. Animal and Technology Research Center (CITA), Instituto Valenciano de Investigaciones Agrarias (IVIA), Pol. Esperanza 100, 12400 Segorbe, Castellón, Spain;2. Plant Protection and Biotechnology Center (IVIA), Ctra. Moncada-Náquera km 4.5, Moncada, Valencia, Spain;3. Institute of Animal Science and Technology, Universitat Politècnica de València (UPV), Cno. de Vera 14, 46022 Valencia, Spain;1. Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via Di Biasio, 43, 03043 Cassino, FR, Italy;2. Telematic University Pegaso, Piazza Trieste e Trento, 48, 80132 Naples, Italy;3. Department of Civil and Environmental Engineering, University of South Florida, 4204 E. Fowler Avenue, Tampa, FL 33620, USA;4. Department of Civil, Architectural and Environmental Engineering, University of Naples Federico II, Via Claudio, 21, 80125 Naples, Italy;5. UNESCO-IHE Institute for Water Education, Westvest 7, 2611 AX Delft, The Netherlands;1. Department of Chemical Engineering and Food Technology, Faculty of Science, University of Cádiz, Spain;2. Department of Chemistry and Soil Science, Faculty of Science, University of Navarra, Spain;3. Department of Environmental Technology, Faculty of Sea and Environment Sciences, University of Cádiz, Spain;1. State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai, China;2. School of Civil Engineering, Tongji University, Shanghai, China;3. Research and Service Center for Environmental Protection Industry in Yancheng, Jiangsu Province, China |
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| Abstract: | Focus is placed on substrate pre-treatment in anaerobic digestion (AD) as a means of increasing biogas yields using today's diversified substrate sources. Current pre-treatment methods to improve AD are being examined with regard to their effects on different substrate types, highlighting approaches and associated challenges in evaluating substrate pre-treatment in AD systems and its influence on the overall system of evaluation. WWTP residues represent the substrate type that is most frequently assessed in pre-treatment studies, followed by energy crops/harvesting residues, organic fraction of municipal solid waste, organic waste from food industry and manure. The pre-treatment effects are complex and generally linked to substrate characteristics and pre-treatment mechanisms. Overall, substrates containing lignin or bacterial cells appear to be the most amendable to pre-treatment for enhancing AD. Approaches used to evaluate AD enhancement in different systems is further reviewed and challenges and opportunities for improved evaluations are identified. |
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