Nitrogen removal from poultry slaughterhouse wastewater in anaerobic-anoxic-aerobic combined reactor: Integrated effect of recirculation rate and hydraulic retention time

Lopes, Carla Limberger; Assis, Tatiane Martins de; Passig, Fernando Hermes; Model, Adriana Neres de Lima; Mees, Juliana Bortoli Rodrigues; Cervantes, Francisco J.; Gotardo, Jackeline Tatiane; Gomes, Simone Damasceno

doi:10.1016/j.jenvman.2021.114162

Cited by 11 publications

(2 citation statements)

References 29 publications

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“…Para que o processo NDS ocorra são necessários ambientes aeróbios, para a nitrificação, que transforma o nitrogênio amoniacal para nitrito e nitrato, e anóxicos, onde o nitrato é transformado a gás nitrogênio e devolvido ao ambiente (BARANA, et al, 2013;LOPES, et al, 2022). Pensando nesses processos simultâneos, um meio suporte que promova ambientes óxicos e anóxicos, aliado a uma condição de aeração intermitente, pode ajudar a solucionar a problemática apresentada.…”

Section: Apresentaçãounclassified

Uso De Reator De Leito Fixo Em Meio Suporte Biobob®, Operando Em Escala Piloto Na Remoção De Dqo E Nitrogênio Total De Esgoto Sanitário

MARTINS DE ASSIS,

BURGATH,

WOSIACK

et al. 2023

HOLOS

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Este trabalho operou um reator piloto, instalado em uma estação de tratamento de esgoto sanitário real. O reator contou com leito fixo empacotado de Biobob®, estrutura em polietileno de alta densidade com poliuretano expandido, volume total de 5,65m3 e útil de 3,20m3 e fluxo ascendente. O objetivo do reator foi a remoção de Nitrogênio Total via Nitrificação e Desnitrificação Simultânea e remoção de DQO. O reator operou com aeração intermitente e TDH de 10, 12 e 20h, a alimentação ocorreu com substratos nas razões 1:1 (v:v) esgoto bruto/efluente de UASB; e efluente do UASB. O reator suportou as variações de carga da ETE, adversidades comuns de sistemas em larga escala. A etapa E2 - alimentação bruto:UASB, se destacou com média de remoção de N de 55% e remoção média de DQO em 81%. As imagens obtidas por MEV demonstraram que houve sinergia entre bactérias nitrificantes, desnitrificantes e arqueas metanogênicas.

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Section: Apresentaçãounclassified

Uso De Reator De Leito Fixo Em Meio Suporte Biobob®, Operando Em Escala Piloto Na Remoção De Dqo E Nitrogênio Total De Esgoto Sanitário

MARTINS DE ASSIS,

BURGATH,

WOSIACK

et al. 2023

HOLOS

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“…In addition to the nourishment and huge economic derivatives accruable from the abattoir industries, the issue of generation of a considerable volume of contaminated wastewaters (abattoir wastewater, AWW) during their operations still subsists. Studies have shown that these AWW are characterized by a variety of organic pollutants, which serve as substrates for ammonia-nitrogen (A-N) generating microorganisms (Elemile et al 2019;Lin et al 2014;Lopes et al 2022). Due to the high toxicity of A-N, which has been extensively reported (Elemile et al 2019;Haseena et al 2016;Halim et al 2010), their total elimination or considerable reduction in AWW is plausible.…”

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A comparative optimization and modeling of ammonia–nitrogen adsorption from abattoir wastewater using a novel iron-functionalized crab shell

et al. 2022

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High-grade adsorbent (Fe–CS) was successfully synthesized from waste crab shells (CS) for the adsorptive removal of ammonia–nitrogen (A–N) from abattoir wastewater. Fe–CS was analyzed using Fourier transform infrared spectroscopy, x-ray diffraction, Scanning electron microscopy, and Thermogravimetric analysis. The characterization results indicated that Fe–CS possessed important qualities required for surface-driven chelation. The analysis of variance result showed that Fe–CS dosage (with f–value of 284.5) was the most effective process parameter of influence during A-N adsorption. The regression coefficients obtained from the process modeling illustrated the applicability of RSM (R2 = 0.9799), ANN (R2 = 0.9025), and ANFIS (R2 = 0.9998) in predicting the A–N adsorptive removal, while the comparative statistical analysis established the superiority of ANFIS model over ANN and RSMs’ data prediction accuracy. The optimization result further demonstrated that ANFIS–GA predicted an optimum removal efficiency of 92.60% at pH of 6.5, a dosage of 2.2 g, A–N conc. of 18.8 mg/L, Temp. of 317 K, and adsorption time of 156 min. The mechanistic plot obtained from Weber–Morris model depicted that three regions were involved in the adsorption process. Boyd model parameters revealed that intraparticle diffusion controlled the process at low A–N concentration (A–N concentration ≤ 15 mg/L), while film diffusion dominated the adsorption process at concentrations higher than 15 mg/L. The average Gibbs free energy value ($$- \Delta G^{0}$$ - Δ G 0 = 3.08212 kJ/mol), enthalpy ($$\Delta H^{0}$$ Δ H 0 = 4.1150 kJ/mol), activation energy ($$E_{A}$$ E A = 3.7454 kJ/mol) and entropy ($$\Delta S^{0}$$ Δ S 0 = 22.9710 J/mol K) obtained from thermodynamic studies confirmed the spontaneous, endothermic, favorable and physical nature of the process.

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Advancements of sequencing batch biofilm reactor for slaughterhouse wastewater assisted with response surface methodology

et al. 2022

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Nitrogen removal from poultry slaughterhouse wastewater in anaerobic-anoxic-aerobic combined reactor: Integrated effect of recirculation rate and hydraulic retention time

Cited by 11 publications

References 29 publications

Uso De Reator De Leito Fixo Em Meio Suporte Biobob®, Operando Em Escala Piloto Na Remoção De Dqo E Nitrogênio Total De Esgoto Sanitário

Uso De Reator De Leito Fixo Em Meio Suporte Biobob®, Operando Em Escala Piloto Na Remoção De Dqo E Nitrogênio Total De Esgoto Sanitário

A comparative optimization and modeling of ammonia–nitrogen adsorption from abattoir wastewater using a novel iron-functionalized crab shell

Advancements of sequencing batch biofilm reactor for slaughterhouse wastewater assisted with response surface methodology

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