E2.14 Karbakhsh 2017 ReNUWIt Annual Meeting Poster

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Abstract/Contents

Abstract: 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.

Type of resource	other
Date created	May 2017

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

Location	https://purl.stanford.edu/nk871kb8163

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Preferred Citation: 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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