In-Situ Stability Control of Energy-Producing Anaerobic Biological Reactors through Novel Use of Ion Exchange Fibers
| Autor: | Derick G. Brown, Arup K. SenGupta, Yu Tian |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Ion exchange
Biosolids Renewable Energy Sustainability and the Environment Chemistry General Chemical Engineering 0208 environmental biotechnology 02 engineering and technology General Chemistry 010501 environmental sciences 01 natural sciences Methane 020801 environmental engineering chemistry.chemical_compound Chemical engineering Biogas Chemical addition Environmental Chemistry Process control Porosity Anaerobic exercise 0105 earth and related environmental sciences |
| Zdroj: | ACS Sustainable Chemistry & Engineering. 5:9380-9389 |
| ISSN: | 2168-0485 |
| DOI: | 10.1021/acssuschemeng.7b02435 |
| Popis: | Anaerobic biological treatment of high-strength organic industrial wastes is preferred over aerobic treatment as it produces a methane-rich biogas, has much lower energy requirements, and produces significantly less biosolids. Process stability and reactor failure are of concern, however, for waste streams that exhibit large variations in organic loading, which can cause detrimental pH fluctuations, and that have the potential for accidental input of toxic metals. Here, we demonstrate for the first time that the use of ion exchange fibers (IXFs) can provide passive resilience to these failure modes, without requiring operator oversight or reactive process control via chemical addition. IXFs have the advantage of rapid kinetics due to their small size, and they can be readily inserted and withdrawn as woven mats or porous pillows. This approach is demonstrated here using the weak-acid IXF FIBAN X-1 and the strong-base FIBAN A-1. FIBAN X-1 passively stabilized anaerobic reactors by (i) buffering pH fluctuat... |
| Databáze: | OpenAIRE |
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