Anaerobic Treatment and Biogas Production from Organic Waste

Zupančič, Gregor Drago; Grilc, Viktor

doi:10.5772/32756

Cited by 20 publications

(4 citation statements)

References 26 publications

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“…The capacity of water hyacinth to absorb heavy metals and salts in its natural habitat has been related to its phytoremediation abilities (Sidek et al 2018 ; Nazir et al 2020 ). The stimulatory effect of heavy metals on the metabolic potential of indigenous microorganisms to produce methane has been investigated (Zupančič and Grilc 2012 ; Romero-Güiza et al 2016 ). These metals are beneficial to the microorganisms at certain concentrations and the concentrations of heavy metals identified in the digestate met the required standard for fertilizers according to the Fertiliser regulations in South Africa (DAFF 2012 ; Mukhuba et al 2018 ).…”

Section: Discussionmentioning

confidence: 99%

Bioaugmentation potential of inoculum derived from anaerobic digestion feedstock for enhanced methane production using water hyacinth

Linda

Roopnarain

Tekere

et al. 2023

World J Microbiol Biotechnol

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The utilisation of water hyacinth for production of biogas is considered to be a solution to both its control and the global renewable energy challenge. In this instance, an investigation was conducted to evaluate the potential of water hyacinth inoculum to enhance methane production during anaerobic digestion (AD). Chopped whole water hyacinth (10% (w/v)) was digested to prepare an inoculum consisting mainly of water hyacinth indigenous microbes. The inoculum was incorporated in the AD of freshly chopped whole water hyacinth to set up different ratios of water hyacinth inoculum and water hyacinth mixture with appropriate controls. The results of batch tests with water hyacinth inoculum showed a maximal cumulative volume of 211.67 ml of methane after 29 days of AD as opposed to 88.6 ml of methane generated from the control treatment without inoculum. In addition to improving methane production, inclusion of water hyacinth inoculum reduced the electrical conductivity (EC) values of the resultant digestate, and, amplification of nifH and phoD genes in the digestate accentuates it as a potential soil ameliorant. This study provides an insight into the potential of water hyacinth inoculum to enhance methane production and contribute to the feasibility of the digestate as a soil fertility enhancer.

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Section: Discussionmentioning

confidence: 99%

Bioaugmentation potential of inoculum derived from anaerobic digestion feedstock for enhanced methane production using water hyacinth

Linda

Roopnarain

Tekere

et al. 2023

World J Microbiol Biotechnol

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“…A relação C:N ideal aproximada é de 30:1, visto que o carbono e nitrogênio são fontes indispensáveis para fornecimento de energia e para o crescimento microbiano, respectivamente (Zupančič & Grilc, 2012). Os microrganismos são capazes de sobreviver a uma longa faixa de pH, no entanto, a faixa ideal encontra-se entre 6,8 e 8,5 (Al-Rubaye, Karambelkar & Shivashankaraiah, 2019).…”

Section: Etapas De Tratamentounclassified

Uso de microrganismos no tratamento anaeróbio de efluentes ricos em nitrogênio e fósforo tendo em vista a economia circular

Santos

Barbosa

Porto

et al. 2021

RSD

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O aumento da população, a crescente urbanização e a industrialização influenciam diretamente na geração de efluentes domésticos e industriais contendo altas cargas de nutrientes como nitrogênio e fósforo, comprometendo o ambiente e a saúde pública. O presente trabalho tem por objetivo revisar as características, os impactos e as vantagens da utilização de microrganismos no tratamento anaeróbio de efluentes ricos em nitrogênio e fósforo, ressaltando o potencial uso de insumos do processo para a economia circular. Para isto, foi realizada uma revisão de literatura utilizando palavras-chave sobre os mecanismos e pressupostos ligados ao tema. Com base nas referências encontradas, foi possível compreender as principais características dos efluentes ricos em nitrogênio e fósforo com ênfase nas etapas do tratamento anaeróbio, as vantagens e desvantagens do tratamento, os microrganismos que podem ser utilizados no processo, os diferentes tipos de reatores anaeróbios, assim como foi possível demonstrar como os subprodutos do tratamento de efluentes em condições anaeróbias podem ser inseridos no contexto da economia circular. Portanto, a digestão anaeróbia é uma alternativa de baixo custo para o tratamento biológico de efluentes ricos em nitrogênio e fósforo, mostrando-se útil para a minimização de impactos negativos associados à contaminação ambiental e à exposição aos riscos de saúde pública, bem como à oportunidade de uso ou reuso de potenciais produtos provenientes do processo a exemplo dos nutrientes e biogás.

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“…Sapkota et al (2012) obtained 32.12 l/kg of biogas from kitchen waste. According to Zupancic and Grilc (2012), municipal organic waste contains 0.5-0.8 m 3 /kg of Volatile Solid (VS). The obtained volume of biogas in this study was found to be less than both studies.…”

Section: Measurement Of Biogas Productionmentioning

confidence: 99%

Biogas production for organic waste management: a case study of canteen’s organic waste in Solid Waste Management Technical Support Center, Lalitpur, Nepal

Shrestha

Chaulagain

Shrestha³

2017

Nep Jnl Environ Sci

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Management of solid waste is one of the major challenges faced by the municipalities. Solid waste mainly comprises of organic waste. Proper management of organic waste helps minimize solid waste problem. This study was carried out to assess the production of biogas from canteen’s organic waste as a solution for management of organic waste in Solid Waste Management Technical Support Centre, Lalitpur using innovative urban biogas plant with capacity 1,275 liters for 48 days. The physicochemical parameters of canteen’s waste and bio-slurry were analyzed. Similarly, volume of biogas, volume of methane and carbon dioxide in biogas produced were measured and CO2 reduction from biogas plant was identified. The average values of physicochemical parameters of canteen’s waste lied within the optimum range for biogas production. The biogas plant produced 22.03 liters/kg of waste and 120.47 liters/day of biogas. The produced biogas contained 48.89% methane and 39.11% carbon dioxide on average. The biogas plant could reduce 3.20 tones of CO2 equivalent per annum from 262.50 kg of waste fed for 48 days. The values of nitrogen, phosphorus and potassium of bio-slurry indicated it as a better fertilizer. Shapiro-Wilk test showed that the p-value of collected data were greater than 0.05 indicating normal distribution. Linear regression between ambient temperature and biogas production showed that the p-value less than 0.05 indicating significant relationship between them (r2=0.08). The estimated return period of the invested money was 9.5 months in kerosene substitution or 9.7 months in firewood substitution or 9.5 months in LPG substitution. Similarly, the estimated average rate of return was 125.26% in kerosene substitution or 123.72% in firewood substitution or 125.01% in LPG substitution. These results indicated that biogas production using innovative urban biogas plant is better solution for organic waste management. Further extensive and large scale research need to be carried out for the optimization of the biogas plant.

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Anaerobic Treatment and Biogas Production from Organic Waste

Cited by 20 publications

References 26 publications

Bioaugmentation potential of inoculum derived from anaerobic digestion feedstock for enhanced methane production using water hyacinth

Bioaugmentation potential of inoculum derived from anaerobic digestion feedstock for enhanced methane production using water hyacinth

Uso de microrganismos no tratamento anaeróbio de efluentes ricos em nitrogênio e fósforo tendo em vista a economia circular

Biogas production for organic waste management: a case study of canteen’s organic waste in Solid Waste Management Technical Support Center, Lalitpur, Nepal

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