Anna Kogler

All Publications

• Long-Term Robustness and Failure Mechanisms of Electrochemical Stripping for Wastewater Ammonia Recovery. ACS environmental Au Kogler, A., Sharma, N., Tiburcio, D., Gong, M., Miller, D. M., Williams, K. S., Chen, X., Tarpeh, W. A. 2024; 4 (2): 89-105

  Abstract

  Nitrogen in wastewater has negative environmental, human health, and economic impacts but can be recovered to reduce the costs and environmental impacts of wastewater treatment and chemical production. To recover ammonia/ammonium (total ammonia nitrogen, TAN) from urine, we operated electrochemical stripping (ECS) for over a month, achieving 83.4 ± 1.5% TAN removal and 73.0 ± 2.9% TAN recovery. With two reactors, we recovered sixteen 500-mL batches (8 L total) of ammonium sulfate (20.9 g/L TAN) approaching commercial fertilizer concentrations (28.4 g/L TAN) and often having >95% purity. While evaluating the operation and maintenance needs, we identified pH, full-cell voltage, product volume, and water flux into the product as informative process monitoring parameters that can be inexpensively and rapidly measured. Characterization of fouled cation exchange and omniphobic membranes informs cleaning and reactor modifications to reduce fouling with organics and calcium/magnesium salts. To evaluate the impact of urine collection and storage on ECS, we conducted experiments with urine at different levels of dilution with flush water, extents of divalent cation precipitation, and degrees of hydrolysis. ECS effectively treated urine under all conditions, but minimizing flush water and ensuring storage until complete hydrolysis would enable energy-efficient TAN recovery. Our experimental results and cost analysis motivate a multifaceted approach to improving ECS's technical and economic viability by extending component lifetimes, decreasing component costs, and reducing energy consumption through material, reactor, and process engineering. In summary, we demonstrated urine treatment as a foothold for electrochemical nutrient recovery from wastewater while supporting the applicability of ECS to seven other wastewaters with widely varying characteristics. Our findings will facilitate the scale-up and deployment of electrochemical nutrient recovery technologies, enabling a circular nitrogen economy that fosters sanitation provision, efficient chemical production, and water resource protection.

  View details for DOI 10.1021/acsenvironau.3c00058

  View details for PubMedID 38525023

  View details for PubMedCentralID PMC10958661

• Long-Term Robustness and Failure Mechanisms of Electrochemical Stripping for Wastewater Ammonia Recovery ACS ENVIRONMENTAL AU Kogler, A., Sharma, N., Tiburcio, D., Gong, M., Miller, D. M., Williams, K. S., Chen, X., Tarpeh, W. A. 2024

  View details for DOI 10.1021/acsenvironau.3c00058

  View details for Web of Science ID 001162203100001

• QSDsan: an integrated platform for quantitative sustainable design of sanitation and resource recovery systems ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY Li, Y., Zhang, X., Morgan, V. L., Lohman, H. C., Rowles, L. S., Mittal, S., Kogler, A., Cusick, R. D., Tarpeh, W. A., Guest, J. S. 2022

  View details for DOI 10.1039/d2ew00455k

  View details for Web of Science ID 000843629200001

• Systematic Evaluation of Emerging Wastewater Nutrient Removal and Recovery Technologies to Inform Practice and Advance Resource Efficiency ACS ENVIRONMENTAL SCIENCE AND TECHNOLOGY ENGINEERING Kogler, A., Farmer, M., Simon, J. A., Tilmans, S., Wells, G. F., Tarpeh, W. A. 2021; 1 (4): 662-684

  View details for DOI 10.1021/acsestengg.0c00253

  View details for Web of Science ID 000654140500002