E2.14 Karbakhsh 2017 ReNUWIt Annual Meeting Poster

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Publicly owned treatment works (POTWs) employ energy-intensive technologies to remove organic carbon (org-C), ammoniacal nitrogen (N), and phosphates (P) from wastewater, and dissipate them into the environment. For instance, 50% of org-C is lost as CO2, and 80% of N is lost as N2 gas (Fig 1). Previous studies at NMSU have demonstrated a Photosynthetically Oxygenated Waste-to-Energy Recovery (POWER) system (Fig 1) capable of removing org-C, N, and P in urban wastewaters a single step, through mixotrophic metabolism of Galdieria sulphuraria. The energy-rich biomass generated in the POWER system is processed by hydrothermal liquefaction (HTL) to recover its energy content. This project evaluated the feasibility of recovering N and P from HTL products to precipitate struvite (NH4MgPO4·6H2O) for use as a slow-release fertilizer.


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Date created May 2017


Author Karbakhshravari, Moshen
Author Lara, Amanda
Author Henkanatte Gedera, Shanka
Author Nirmalakhandan, Nagamany
Author Papelis, Charalambos


Subject Re-inventing the Nation’s Urban Water Infrastructure
Subject ReNUWIt
Subject E2.14
Subject Efficient Engineered Systems
Subject Energy and resource recovery
Subject Las Cruces Wastewater Treatment Plant
Subject Las Cruces
Subject New Mexico

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Karbakhshravari, M., Lara, A., Henkanatte Gedera, S.M., Nirmalakhandan, N., & Papelis, C. (2017). E2.14 Karbakhsh 2017 ReNUWIt Annual Meeting Poster. Stanford Digital Repository. Available at: https://purl.stanford.edu/nk871kb8163


Re-inventing the Nation's Urban Water Infrastructure (ReNUWIt)

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