Phosphate enhancing fermentative hydrogen production from substrate with municipal solid waste composting leachate as a nutrient

Bioresource Technology
Qiang LiuGuangren Qian

Abstract

To overcome phosphorus deficiency in municipal solid waste composting leachate, orthophosphate (OP) and pyrophosphate (PP) were separately added into leachate to evaluate the possibility of fermentative H2 production with leachate and phosphorus-rich streams as a full nutrient source. Results indicate H2 production is significantly promoted by OP addition but slightly facilitated by PP in some cases, depending on initial pH and P dosage. The highest hydrogen yield (1.95±0.07mol H2/mol glucose) was achieved at a COD/P ratio of 27.64 (mg/mg) with OP as phosphorus source at initial pH 5. For PP, a maximum yield of 1.58±0.09mol H2/mol glucose can be attained at the optimal COD/P ratio of 221.12 (mg/mg) and initial pH 5. OP promotes H2 production via dual approaches: supplying nutrient and relieving inhibition from excessive Ca(2+) on granule sludge. However, both the roles in nutrient supply and Ca(2+) removal by PP addition are limited.

References

Apr 12, 2003·Water Research·Frederik HammesWilly Verstraete
Dec 14, 2006·Water Science and Technology : a Journal of the International Association on Water Pollution Research·F Y Chang, C Y Lin

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Citations

Jan 5, 2021·Environmental Science and Pollution Research International·Suresh Kumar, Surinder Deswal
Jan 6, 2021·International Journal of Molecular Sciences·Mariamichela LanzilliGiuliana d'Ippolito
Jul 30, 2020·Journal of Environmental Management·Tengfei GuoNing Wang

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