Cycle Time Minimization During Renewable Methane Production from H2O2 Enhanced Anaerobic Co-Digestion of Petrochemical Wastewater in Continuous Stirred Tank Reactor

Abstract

Investigations explored that specifically in case of recalcitrant substrates; the hydrolysis is a rate-defining stage in anaerobic digestion 1. To perk up biochemical degradation competence of numerous refractory materials, a quantity of pretreatment might be helpful 2. Such pretreatments can transpose various refractory organic matters to biodegradable organic ones, which can be easily degraded afterwards in biological reactor 3. Several pretreatments have been performed including thermal hydrolysis, UV treatment, particle size diminution, ultrasonic effect, ozonization, oxidation by hydrogen peroxide etc. Oxidation by hydrogen peroxide (OHP), a defensible technology appeared to cover the gap between wastewater technologies treating the effluents with moderate to high refractory organic matter content and low biodegradability 4. Additionally, this technology is opposite to treat all kinds of organic wastewater 5. Compounds such as halogenated organics, chloramines, adsorbable organic halide, fats and greases, phenols, mono and polycyclic aromatics, naphthalene, polychlorinated biphenyls, dyes, pesticides and herbicides etc. are effectively treated in the industrial oxidation by hydrogen

Enriched Renewable Methane from the Anaerobic Digestion of Petrochemical Wastewater: A Bio-Remediation Structure

“…The optimum dosing for NH4HCO3 was calculated depending on the cumulative biogas yield. An assumption might be made that accelerated biogas yield would generate within 3 h of batch process for similar substrate [23]. Nonetheless, the toxicity of NH4HCO3 especially to the methanogen in the system could be indicated in contrast of the maximum biogas yield [24].…”

“…Nonetheless, the toxicity of NH4HCO3 especially to the methanogen in the system could be indicated in contrast of the maximum biogas yield [24]. In the previous study Configuration of CH4:CO2 was at the ratio of 25:75 [23]. Even so, the biogas generation in this work was assumed to be too little for analysis by gas analyzer.…”

“…The failure was countervailed by a sudden drop of pH and increasing concentration of volatile fatty acid (VFA) [8][9]. It is well known that these two factors are limiting to the anaerobic digestion process, especially to the sensitive methanogen group of bacteria [10]. However, the amount of organic loading at 6 kg COD m -3 day -1 was found to be too low to cause failure in anaerobic upflow fixed film reactor (UFFR) [11][12].…”