Effects of temperature, proportion and organic loading rate on the performance of anaerobic digestion of food waste

Blasius, Jandir Pereira; Contrera, Ronan Cleber; Maintinguer, Sandra Imaculada; Castro, Marcus César Avezum Alves de

doi:10.1016/j.btre.2020.e00503

Cited by 34 publications

(13 citation statements)

References 51 publications

(59 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The results showed that the fitted Rmax values of the three models were lower than the experimental Rmax values except for the CD + WR group. Lower fitted Rmax values than the experimental Rmax values were also reported in previous anaerobic co-digestion studies [12,30]. The average Rmax values fitted by the modified logistic and Richards models were closer the experimental Rmax values than those fitted by the modified Gompertz model.…”

Section: Discussionsupporting

confidence: 77%

Modeling the Methane Production Kinetics of Anaerobic Co-Digestion of Agricultural Wastes Using Sigmoidal Functions

Zhang

Cao

et al. 2021

Energies

View full text Add to dashboard Cite

The modified sigmoidal bacteria growth functions (the modified Gompertz, logistic, and Richards) were used to evaluate the methane production process kinetics of agricultural wastes. The mesophilic anaerobic co-digestion experiments were conducted with various agricultural wastes as feedstocks, including cow manure, corn straw, grape leaves, vines, wine residue, strawberry leaves, and tomato leaves. The results showed that anaerobic co-digestion of cow manure and other agricultural wastes increased the methane yields while it prolonged the lag phase time. Compared with the modified Gompertz and logistic models, the modified Richards model obtained higher correlation coefficients and was able to fit experimental data better. The results of this study were expected to determine a suitable model to simulate and study the kinetic process of anaerobic co-digestion with mixed agricultural wastes as feedstocks.

show abstract

Section: Discussionsupporting

confidence: 77%

Modeling the Methane Production Kinetics of Anaerobic Co-Digestion of Agricultural Wastes Using Sigmoidal Functions

Zhang

Cao

et al. 2021

Energies

View full text Add to dashboard Cite

show abstract

“…A study conducted with prepared and leftover food as feedstock has concluded in a specific methane yield of 869.00 mL of CH4.g /TVS [35]. Similarly, another study [33,36] has signalled the biomethane potential and specific methane yields of 725.00 and 683.00 The lab-scale batch experiments lasted for 57 days.…”

Section: Effect Of S:i Ratios On Biogas Yieldsmentioning

confidence: 98%

Effect of the Substrate to Inoculum Ratios on the Kinetics of Biogas Production during the Mesophilic Anaerobic Digestion of Food Waste

Khadka

Parajuli

Dangol³

et al. 2022

Energies

View full text Add to dashboard Cite

This study evaluates the effects of the varying substrate to inoculum ratios (S:I) of 0.5, 1, 2, 3, 4, 5, and 6 (volatile solids/VS basis) on the kinetics of biogas production during batch mesophilic (35 ± 1 ℃) anaerobic digestion (AD) of simulated food waste (FW), using anaerobic digestate as the inoculum. Kinetic parameters during biogas production (scrubbed with NaOH solution) are predicted by the first-order and the modified Gompertz model. The observed average specific biogas yields are in descending order corresponding to the S:I ratios 1, 2, 4, 6, 3, 5, and 0.5, respectively, and the significant effect of the S:I ratio was observed. The tests with the S:I of 1 have the maximum average biogas production rates of 88.56 NmL/gVS.d, whereas tests with the S:I of 6 exhibited the lowest production rates (24.61 NmL/gVS.d). The maximum biogas yields, predicted by the first order and the modified Gompertz model, are 668.65 NmL/gVS (experimental 674.40 ± 29.10 NmL/gVS) and 653.17 NmL/gVS, respectively. The modified Gompertz model has been proven to be suitable in predicting biogas production from FW. VS removal efficiency is greater in higher S:I ratios, with a maximum of 78.80 % at the S:I ratio of 6, supported by the longer incubation time. Moreover, a significant effect of the S:I ratio is seen on kinetics and energy recovery from the AD of FW.

show abstract

“…Entretanto, cabe lembrar que o valor de BMP é dependente das condições do processo (tipo de processo contínuo ou batelada, digestão úmida ou seca, temperatura e atividade do inóculo) e dos tipos e das propriedades dos resíduos (CAMPUZANO; GONZALEZ-MARTINEZ, 2016;BLASIUS et al, 2020), que dificultam a comparação entre os trabalhos.…”

Section: Testes De Bmpunclassified

“…Os desafios englobam a baixa taxa de aplicação de sólidos nos reatores, que implica na necessidade de grandes instalações, a vulnerabilidade da atividade metanogênica frente a elevadas cargas orgânicas, a variação e sazonalidade dos substratos, o longo tempo requerido para estabilização da matéria orgânica, as características do material digerido, além de desafios técnicos e tecnológicos e a quantidade e qualidade de inóculo (LI et al, 2011;KHALID et al, 2011;JEND et al, 2015;SILVEIRA et al, 2015;PARITOSH et al, 2017;POSMANIK et al, 2017;BLASIUS, 2020).…”

Section: Introductionunclassified

Estratégia De Adaptação De Lodo Anaeróbio Mesofílico Como Fonte De Inóculo Para

Rodrigues

Blasius

Castro

2020

R. gest. sust. ambient.

Self Cite

View full text Add to dashboard Cite

A fração de matéria orgânica representa mais de 50% do total de resíduos sólidos urbanos gerados no Brasil. Apesar do grande volume produzido, estes resíduos não recebem tratamento adequado e são fontes de passivos ambientais. Dentre os processos de tratamento dos resíduos orgânicos, a digestão anaeróbia destaca-se por ser adaptada a diferentes escalas e maior gama de substratos, além de gerar como subprodutos: biofertilizante e biogás. Para acelerar e otimizar este processo é recomendada a utilização de uma fonte de inóculo, aclimatada às condições impostas nos testes. Sendo assim, este trabalho avaliou diferentes períodos de adaptação de lodo anaeróbio mesofílico (15, 60 e 80 dias) com uso de substrato sintético (acetato), como estratégia para partida de biorreatores, em escala de batelada, operados com resíduos alimentares. Os resíduos do pré-preparo de alimentos e das sobras das refeições foram provenientes de restaurante universitário. Foram realizados testes de potencial bioquímico de metano (BMP), sendo avaliada a eficiência do processo em termos de remoção de carga orgânica. Os índices de BMP encontrados foram de 537, 837 e 868 mL de CH4.g STV-1 para os tempos de adaptação de 15, 60 e 80 dias, respectivamente. A eficiência na remoção da carga orgânica foi mais elevada para os tempos de 60 e 80 dias, porém com pouca variação entre estes períodos. Este trabalho elucidou a importância da adaptação dos microrganismos antes de sua aplicação nos testes com resíduos orgânicos e destacou elevada produção de metano e potencial para aproveitamento energético dos resíduos alimentares.

show abstract

Effects of temperature, proportion and organic loading rate on the performance of anaerobic digestion of food waste

Abstract: Graphical abstract

Cited by 34 publications

References 51 publications

Modeling the Methane Production Kinetics of Anaerobic Co-Digestion of Agricultural Wastes Using Sigmoidal Functions

Modeling the Methane Production Kinetics of Anaerobic Co-Digestion of Agricultural Wastes Using Sigmoidal Functions

Effect of the Substrate to Inoculum Ratios on the Kinetics of Biogas Production during the Mesophilic Anaerobic Digestion of Food Waste

Estratégia De Adaptação De Lodo Anaeróbio Mesofílico Como Fonte De Inóculo Para

Contact Info

Product

Resources

About