Impact of source-separation of urine on treatment capacity, process design, and capital expenditure of a decentralised wastewater treatment plant

Badeti, Umakant; Jiang, Jade; Me, Abdulaziz Almuntashiri; Pathak, Niren Kumar; Dorji, Ugyen; Volpin, Federico; Freguia, Stefano; Lun, A; Chanan, Amit; Kumarasingham, Sanjay; Shon, Ho Kyong; Phuntsho, Sherub

doi:10.1016/j.chemosphere.2022.134489

Cited by 15 publications

(3 citation statements)

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“…The adoption of waterless urinals is gaining recognition for its dual advantages of water conservation and enhanced resource recovery efficiency in postprocessing. − Life cycle assessments also showed that waterless urinals are environmentally friendly compared to conventional wastewater treatment methods. − However, the efficient recovery of nutrients can be hindered by the potential nitrogen loss during urine collection and waterless urinal implementation . This is primarily due to the presence of urease, an enzyme that catalyzes the hydrolysis of urea in urine, releasing volatile ammonia and bicarbonate as byproducts. , …”

Section: Introductionmentioning

confidence: 99%

Novel Approach for Fresh Urine Stabilization during Collection and Storage

Liu,

Merenda,

Guo

et al. 2024

Environ. Sci. Technol. Lett.

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Waterless urinals are critical in urine diversion systems aimed at nutrient recovery for a circular economy. However, the existence of urease can trigger urea hydrolysis, causing mineral precipitation in waterless urinals and pipes, which leads to nitrogen loss and unpleasant odors. This research focuses on creating a urine stabilization product (USP) by combining camphor, ketone, and citric acid in specific ratios to prevent urea hydrolysis in waterless urinals. The effectiveness of the USP was evaluated using pH, urea, phosphate, and ammonium data in real urine samples. The results showed that the USP inhibited 70% of urea hydrolysis and reduced the pH. The introduction of camphor was found to decrease the diversity of the microbial community, while the Kathon preservative serves as the key active ingredient, significantly affecting urea hydrolysis rates during storage. The developed USP demonstrated a rate of inhibition of the total biomass in urine of ∼80%, with only slight bacterial regrowth over 9 days. Practically, the USP is expected to treat ≤300 L of urine, which is roughly equivalent to 2000 instances of urination. To the best of our knowledge, this study is the first to develop a slow-release USP specifically designed to inhibit urea hydrolysis in waterless urinals.

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Section: Introductionmentioning

confidence: 99%

Novel Approach for Fresh Urine Stabilization during Collection and Storage

Liu,

Merenda,

Guo

et al. 2024

Environ. Sci. Technol. Lett.

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“…Resource recycling from urine benefits closing the loop of nutrients. This would provide a sustainable approach to ease the tension between the increasing demand of food and fertilizer and the shortage of nutrients while preventing water pollution (Larsen et al, 2016;Badeti et al, 2022). Thus, it could be an effective tool to help eradicating hunger and ensuring environmental sustainability in the Millennium Development Goals (MDGs) of…”

Section: Introductionmentioning

confidence: 99%

Sustainable sanitation- how can we improve sanitation systems in the global south?

2023

Frontiers Research Topics

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Frontiers is more than just an open access publisher of scholarly articles: it is a pioneering approach to the world of academia, radically improving the way scholarly research is managed. The grand vision of Frontiers is a world where all people have an equal opportunity to seek, share and generate knowledge. Frontiers provides immediate and permanent online open access to all its publications, but this alone is not enough to realize our grand goals. Frontiers journal seriesThe Frontiers journal series is a multi-tier and interdisciplinary set of openaccess, online journals, promising a paradigm shift from the current review, selection and dissemination processes in academic publishing. All Frontiers journals are driven by researchers for researchers; therefore, they constitute a service to the scholarly community. At the same time, the Frontiers journal series operates on a revolutionary invention, the tiered publishing system, initially addressing specific communities of scholars, and gradually climbing up to broader public understanding, thus serving the interests of the lay society, too. Dedication to qualityEach Frontiers article is a landmark of the highest quality, thanks to genuinely collaborative interactions between authors and review editors, who include some of the world's best academicians. Research must be certified by peers before entering a stream of knowledge that may eventually reach the public -and shape society; therefore, Frontiers only applies the most rigorous and unbiased reviews. Frontiers revolutionizes research publishing by freely delivering the most outstanding research, evaluated with no bias from both the academic and social point of view. By applying the most advanced information technologies, Frontiers is catapulting scholarly publishing into a new generation. What are Frontiers Research Topics?Frontiers Research Topics are very popular trademarks of the Frontiers journals series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area.

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Section: Introductionmentioning

confidence: 99%

Pathogens inactivation in nutrient recovery from urine: A review

Lü

et al. 2022

Front. Environ. Sci.

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Urine source separation, a kind of new sewage management concept, has made great progress in technology development and application in the past 30 years. However, understanding of the potential microbial risks in reuse of urine-derived fertilizer products (UDFPs) in agriculture is still lacking. Outbreak of pandemic of Coronavirus Disease 2019 and more deadly disease caused by Monkeypox strongly sounds the alarm bell to the attention on pathogens in urine and their fate in UDFPs. Therefore, this study presented a comprehensive review on pathogens inactivation in nutrient recovery technologies. The review suggests that technologies using alkaline or heating treatment can effectively reduce pathogens in UDFPs. However, technologies with characteristics such as membrane rejection of nutrients or nutrient adsorption may even concentrate pathogens in their fertilizer products. Based on an overall assessment, connections of technologies and the pathogens inactivation in their UDFPs have been established. This would help to provide a perspective on development of urine treatment technology and management of microbial risks in reusing urine nutrients in agriculture.

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Impact of source-separation of urine on treatment capacity, process design, and capital expenditure of a decentralised wastewater treatment plant

Cited by 15 publications

References 41 publications

Novel Approach for Fresh Urine Stabilization during Collection and Storage

Novel Approach for Fresh Urine Stabilization during Collection and Storage

Sustainable sanitation- how can we improve sanitation systems in the global south?

Pathogens inactivation in nutrient recovery from urine: A review

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