Treatment of source-separated urine by a combination of bipolar electrodialysis and a gas transfer membrane

Pronk, Wouter; Biebow, Martin; Boller, Markus

doi:10.2166/wst.2006.086

Cited by 27 publications

(17 citation statements)

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“…Compared to previous BP-ED systems, the energy input and TAN removal were comparable. 25 , 26 The use of a minimalistic approach for BP-ED using only 2 membranes per cell pair instead of three membranes is beneficial, as less membrane area and fewer compartments are used. As an AEM is more prone to biological fouling of negatively charge compounds, a longer performance is expected for the tested BP-ED configuration in our study.…”

Section: Resultsmentioning

confidence: 99%

“… 25 Their results showed that ammonia was removed from urine, but also, undesired carbonate was recovered in the basic concentrate, limiting the purity of the product. 25 More recently, van Linden et al, in 2020, operated a BP-ED system in batch containing 10 cell triplets (acid, diluate, and base) and achieved up to a 90% ammonium removal from a synthetic medium (NH 4 HCO 3 solution) at an energy input of 19 kJ g N –1 . 26 …”

Section: Introductionmentioning

confidence: 99%

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Minimal Bipolar Membrane Cell Configuration for Scaling Up Ammonium Recovery

Rodrigues

Mattos

Sleutels

et al. 2020

ACS Sustainable Chem. Eng.

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Electrochemical systems for total ammonium nitrogen (TAN) recovery are a promising alternative compared with conventional nitrogen-removal technologies. To make them competitive, we propose a new minimal stackable configuration using cell pairs with only bipolar membranes and cation-exchange membranes. The tested bipolar electrodialysis (BP-ED) stack included six cell pairs of feed and concentrate compartments. Critical operational parameters, such as current density and the ratio between applied current to nitrogen loading (load ratio), were varied to investigate the performance of the system using synthetic wastewater with a high nitrogen content as an influent (NH 4 + ≈ 1.75 g L –1 ). High TAN removal (>70%) was achieved for a load ratio higher than 1. At current densities of 150 A m –2 and a load ratio of 1.2, a TAN transport rate of 1145.1±14.1 g N m –2 d –1 and a TAN-removal efficiency of 80% were observed. As the TAN removal was almost constant at different current densities, the BP-ED stack performed at a high TAN transport rate (819.1 g N m –2 d –1 ) while consuming the lowest energy (18.3 kJ g N –1 ) at a load ratio of 1.2 and 100 A m –2 . The TAN transport rate, TAN removal, and energy input achieved by the minimal BP-ED stack demonstrated a promising new cell configuration for upscaling.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Minimal Bipolar Membrane Cell Configuration for Scaling Up Ammonium Recovery

Rodrigues

Mattos

Sleutels

et al. 2020

ACS Sustainable Chem. Eng.

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“…It can be achieved using evaporation [6], freeze drying [7] electro dialysis [8], and reverse osmosis [9]. However, all these technics are energy intensive processes resulting in high cost.…”

Section: Introductionmentioning

confidence: 99%

Estimation of Water Flux and Solute Movement during the Concentration Process of Hydrolysed Urine by Forward Osmosis

Nikiema

Ito

Guizani

et al. 2017

J. of Wat. & Envir. Tech.

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Urine is rich in nutrients and can be applied as a fertilizer. The limitation on the application is the transportation cost for the farmlands. The cost estimation required 80% of the volume reduction for a feasible utilization of urine in the farmlands near urban areas. The volume reduction system by forward osmosis (FO) process was proposed to address this problem. In this study, the experiments on FO process with real and synthetic hydrolysed urine were performed to assess the FO performances, to evaluate the solute diffusion and to describe the water flux considering the activity of solutes. This study showed both real and synthetic urine can be concentrated to 2-5 times with 2-5 mol/L sodium chloride solution. High diffusivity of ammonia and carbonates were observed, but the diffusion of other solutes was low. The activities of the solutes in the non-ideal solution should be considered for estimation of the osmotic pressure of the solution which reflects the water flux. The software PHRE-EQC can be used for estimation of the activities in such high concentration solutions. The organic matter in real hydrolysed urine had a negligible effect on the osmotic pressure variations.

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“…A presença de resíduos de FQs na urina é um dos fatores que precisam ser criteriosamente avaliados antes da sua recomendação como fertilizante, uma vez que a sua presença no ambiente constitui um potencial risco (SEIFRTOVÁ et al, 2009 Alguns processos de tratamentos têm sido alvo de estudos com a finalidade de promover a remoção dos produtos farmacêuticos na urina humana: ozonização (GULYAS et al, 2007), eletrodiálise (PRONK et al, 2006), steam stripping, destilação a vácuo, irradiaçao UV (TETTENBORN et al, 2007), contudo, os estudos são ainda muito escassos.…”

Section: Mansilla 2006) (Figura 1)unclassified

Desenvolvimento e validação de método para quantificação simultânea de ofloxacina, norfloxacina e ciprofloxacina em urina humana

Zanchetta

Pena

Gonçãlves³

2015

Eng. Sanit. Ambient.

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Eng Sanit Ambient | v.20 n.2 | abr/jun 2015 | 307-314 RESUMOProcessos de tratamentos têm sido alvo de estudos com a finalidade de promover a remoção dos fármacos na urina humana de forma a garantir a segurança ambiental da utilização dessa como fertilizante na agricultura.Neste artigo foi desenvolvido e validado um método de CLAE-DF para a determinação simultânea de ofloxacina, norfloxacina e ciprofloxacina na urina humana. O método proposto descreve uma alternativa eficaz para a determinação de resíduos de fluoroquinolonas, eliminando o passo de limpeza. Além disso, o método proposto demonstrou ser seletivo, com boa linearidade (r>0,99), sensibilidade, precisão (80% a 107%) e repetitividade. Este método mostra ser adequado para análises de rotina (de baixo custo, simples, e utilizando pequeno volume de solventes) para abordagens ecológicas. residues by eliminating the clean-up step. Moreover, the proposed method proved to be selective, with good linearity (r>0.99), sensitivity, accuracy (80% to 107%) and repeatability. This method shows to be suitable for routine analyses (simple, low price and using a small volume of solvents) Palavrasfor ecological approaches.

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Treatment of source-separated urine by a combination of bipolar electrodialysis and a gas transfer membrane

Cited by 27 publications

References 0 publications

Minimal Bipolar Membrane Cell Configuration for Scaling Up Ammonium Recovery

Minimal Bipolar Membrane Cell Configuration for Scaling Up Ammonium Recovery

Estimation of Water Flux and Solute Movement during the Concentration Process of Hydrolysed Urine by Forward Osmosis

Desenvolvimento e validação de método para quantificação simultânea de ofloxacina, norfloxacina e ciprofloxacina em urina humana

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