The Fungal Pre-Treatment of Maize Cob Heart and Water Hyacinth for Enhanced Biomethanation

Ali, Nida; Chaudhary, B. L.; Panwar, N. L.

doi:10.1080/15435075.2012.740707

Cited by 14 publications

(11 citation statements)

References 15 publications

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“…Several studies also reported a decrease in the lignocellulosic content as a result of pretreatment. 15,18,55 Lalak et al 15 studied the effect of three MCs (45, 65, 75%) during Flammulina velutipes pretreatment on AD of Tall Wheat Grass ( Agropyron elongatum ) at 37°C and reported the highest lignin degradation at 65% MCs. Zhao et al 20 stated a high lignin degradation of 20% in Ceriporiopsis subvermispora pretreated yard trimmings at 60% MC.…”

Section: Resultsmentioning

confidence: 99%

The effects of Trichoderma atroviride pretreatment on the biogas production from anaerobic digestion of water hyacinth

Ilo

Nkomo

Mkhize

et al. 2022

Energy & Environment

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Water hyacinth is an invasive alien plant with several impacts on the environment, economy and society. The plant’s high degree of proliferation makes its mitigation difficult and sometimes complex. However, existing evidence suggests that water hyacinth is a sustainable substrate for biogas production. Using the pretreatment processes for the optimisation conditions for biogas production from water hyacinth, this study analysed the effects of moisture content (60%, 70% and 75%) on Trichoderma atroviride pretreatment of water hyacinth and the impact of the pretreatment on biogas production. Anaerobic digestion of the water hyacinth process was performed at 35°C for 35 days. The modified Gompertz model was used to analyse and predict the appropriate kinetic variables of the digestion process. Biogas yields from untreated, pretreated-60%, pretreated-70% and pretreated-75% were optimal at 135, 210, 217 and 223.4 mL/g of volatile solids (VS). These results suggest the pretreatment of water hyacinth enhanced the degradability of water hyacinth by breaking down the cell wall structure and facilitating its use by microorganisms. Furthermore, the results also confirmed that the higher the moisture content, the easier the biodegradation rate and, consequently, the higher the biogas yield. The model predicted maximum methane production potential ranging from 91.84 to 201 mL/g VS, and the maximum methane yield rate was within 10.12–15.12 mL/day. The lag phase varied between 2.46 and 6.94 days. The percentage error between experimental and model outcomes for untreated, pretreated-60%, pretreated-70% and pretreated-75% are 17.96%, 16.67%, 14.20% and 4.68%, respectively, while the coefficients of determination of the model varied between 0.905 and 0.975, demonstrating significant reliability on attained factors.

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Section: Resultsmentioning

confidence: 99%

The effects of Trichoderma atroviride pretreatment on the biogas production from anaerobic digestion of water hyacinth

Ilo

Nkomo

Mkhize

et al. 2022

Energy & Environment

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“…Moreover, Yadav et al (2017) evaluated biogas production from the co-digestion of duckweed with cattle dung, where different proportions were studied for maintaining an optimal C/N ratio of between 25 and 30; the best mixing for biogas production was a relation of 1:1. On the other hand, Ali et al (2014) suggested the combination of different plants (cob heart and Eichhornia crassipes) combined with a pretreatment that consisted of delignification with Volveriella diplasia and Phanerochaete chrysosporium, which could be a good source of energy and fertilizer. However, it was observed that the seeds of Eichhornia crassipes can be recovered after the process of anaerobic digestion with germination values of 1.00%, which is why its use may not be completely safe (Albano et al 2015).…”

Section: Floating Submerged or Emergent Aquatic Plantsmentioning

confidence: 99%

Biogas production from different lignocellulosic biomass sources: advances and perspectives

Martínez‐Gutiérrez

2018

3 Biotech

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The present work summarizes different sources of biomass used as raw material for the production of biogas, focusing mainly on the use of plants that do not compete with the food supply. Biogas obtained from edible plants entails a developed technology and good yield of methane production; however, its use may not be sustainable. Biomass from agricultural waste is a cheap option, but in general, with lower methane yields than those obtained from edible plants. On the other hand, the use of algae or aquatic plants promises to be an efficient and sustainable option with high yields of methane produced, but it necessary to overcome the existing technological barriers. Moreover, these last raw materials have the additional advantage that they can be obtained from wastewater treatment and, therefore, they could be applied to the concept of biorefinery. An estimation of methane yield per hectare per year of the some types of biomass and operational conditions employed is presented as well. In addition, different strategies to improve the yield of biogas, such as physical, chemical, and biological pretreatments, are presented. Other alternatives for enhanced the biogas production such as bioaugmentation and biohythane are showed and finally perspectives are mentioned.

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“…Both biodegradable and non-biodegradable wastes are generated as municipal waste or industrial waste. These wastes are a potential threat to human health if not treated properly (Ali et al, 2014). One of the best strategies for the waste disposal is its conversion into useful material through thermal, thermo-catalytic or biological means.…”

Section: Introductionmentioning

confidence: 99%

“…Both the vegetable oils and animal fats are triglycerides (Ali et al, 2014;Kalam et al, 2011). Fats and fat oils are solids or semi-solids compared to vegetable oil and have long-chain saturated alkyl moieties.…”

Section: Introductionmentioning

confidence: 99%

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Conversion of Spent Fat Oil Into Liquid and Gaseous Fuels Through Clinker Catalyzed Pyrolysis

Hussain

Naz

Rafique

et al. 2019

Braz. J. Chem. Eng.

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Repeated heating of fat oil may result in the formation of highly toxic aldehyde compounds. The oils having such compounds are considered as health hazards and therefore their repeated use is banned in many countries. Since huge quantities of the used oil need urgent disposal, this work is focused on the disposal of used oil for the resource recovery. The waste fat oil was converted into useful fuel through catalytic and non-catalytic pyrolysis. The catalyst was used to lower the oxygen content and to increase the amount of the hydrocarbons in the oil product. The pyrolysis reaction was catalyzed by three catalysts of the clinker type, namely ordinary Portland cement, white cement and burnt clay/clinker powder. The pyrolysis reactions were performed using a custom-made furnace and stainless steel pyrolyzer. Optimum temperature, time and catalyst quantity were identified for high liquid and gaseous fractions and low solid residue. The oil obtained during each reaction was characterized for chemical composition by using GC-MS technique. The oil product of simple pyrolysis, cement catalyzed, white cement catalyzed and clinker catalyzed pyrolysis had the hydrocarbon contents of 3%, 19%, 51% and 93%, respectively.

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The Fungal Pre-Treatment of Maize Cob Heart and Water Hyacinth for Enhanced Biomethanation

Cited by 14 publications

References 15 publications

The effects of Trichoderma atroviride pretreatment on the biogas production from anaerobic digestion of water hyacinth

The effects of Trichoderma atroviride pretreatment on the biogas production from anaerobic digestion of water hyacinth

Biogas production from different lignocellulosic biomass sources: advances and perspectives

Conversion of Spent Fat Oil Into Liquid and Gaseous Fuels Through Clinker Catalyzed Pyrolysis

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