Im chemical enginI am a chemical engineer and my research project is the production of biogas with whey. And my work is in the first phase a proyect i work is biogas production whit lacto serum and the proyect is in a first phase
The issue is dedicated to liquid fuels, able to run in DI engines, as biofuels or like additives
Dear Jorge,
I understand that you aim to produce biogas (methane + carbondioxide + hydrogen sulfide) from protein rich (whey, lactoserum,...) wastewater by anaerobic digestion (AD) after adequate hydrolysis, pre-acidification and conditioning.
In that case, the best and simplest AD reactor for batch treatment (e.g. pilot trials) would be a CSTR (completely stirred tank reactor). For continuous flow operation, a well designed UASB with adjustable reflux and full process controls would be recommended.
Dear Jorge
Based on my experience, I recommend you the use of the EGSB bioreactor (third generation bioreactor), which will allow you to exploit the full potential of the chees whey (lactoserum). Since this bioreactor, being an anaerobic bioreactor of upflow with a high granual bed expansion, it will allow you to generate biogas rich in methane (concentrations above 60%), the only thing you have to be careful of is in your control parameters such as pH and the alkalinity factor; due the serum to be a substrate rich in proteins (TKN), which mostly generate a C / N ratio less than 15/1 which promotes the generation of ammonia, alkalizing the system, so for this problema, I recommend buffering with NaHCO3 to have a higher performance in addition to that you have to adjust the pH near 7 before to feed.
Below some articles are attach:
pd. if you require granular anaerobic inoculum for EGSB adapted to chees whey, we have.
Best regards
Abumalé
One should be careful to compare the design, sizing and performance of tiny lab/bench scale (EGSB) reactors operating in steady optimal conditions with that of industrial full-scale reactors operating in real world varying conditions on real wastewaters with continuously changing composition and loads.
EGSB = Expanded Granular Sludge Bed reactors require granular sludge to operate at high upflow velocities. In most real world cases, especially on high protein wastewaters (whey, lactoserum), the high-rate upflow reactors operate on a mix of granular and flocculating sludge requiring a well designed UASB/EGSB with adjustable reflux and full process controls as recommended.
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