Water hyacinth biomass: chemical and thermal pre-treatment for energetic utilization in anaerobic digestion process

Carlini, Maurizio; Castellucci, Sonia; Mennuni, Andrea

doi:10.1016/j.egypro.2018.08.106

Cited by 42 publications

(15 citation statements)

References 20 publications

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“…Operating temperature is a highly significant parameter for anaerobic digestion. There are three temperature profiles, psychrophilic (T < 20 °C), mesophilic (20 °C < T < 40 °C) and thermophilic (T > 45 °C), although anaerobic digestion processes usually occur in either mesophilic or thermophilic mode [ 106 ]. Mesophilic reactions are primarily used as thermophilic digesters that require higher energy input and are sensitive to operational parameter changes [ 107 ].…”

Section: Prospects For Water Hyacinthmentioning

confidence: 99%

“…Methane yield rises at higher temperatures have been linked to lower enzyme activation energy, higher hydrogen production, stable consortia population and increased methane cumulative production [ 109 , 110 , 111 ]. Overall, many processes involved in anaerobic digestion are biochemical and highly dependent on the reaction rates of the enzymes involved [ 106 ]. The characteristics and optimal conditions of these enzymes, however, depend on the microorganism used in the AD process.…”

Section: Prospects For Water Hyacinthmentioning

confidence: 99%

“…With regards to the feed, it has been suggested that methane yield can be improved by employing pre-treatment to the water hyacinth biomass. Four approaches can be applied [ 106 , 113 , 121 ]: (i) mechanical pre-treatment in which the solid sizes are reduced through shredding or grinding, which assists hydrolysis by making more surface accessible to enzymes; (ii) thermal pre-treatment, which uses high temperatures to assist the physical degradation of biomass; (iii) chemical pre-treatment, which uses alkali or acid to improve the carbohydrate fibre digestibility; and (iv) biological pre-treatment, which uses external enzymes or microorganisms to convert complex sugars into monosaccharides. These approaches are readily available to communities and would improve the characteristics of the water hyacinth available before it is used in the subsequent processes and transferred to the AD system.…”

Section: Prospects For Water Hyacinthmentioning

confidence: 99%

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Invasive Water Hyacinth: Ecology, Impacts and Prospects for the Rural Economy

Harun

Pushiri

Juhari

et al. 2021

Plants

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Water hyacinth (WH) is notorious for causing severe environmental degradation and being an economic burden to manage. However, it offers substantial prospects if exploited, especially by rural communities. High temperatures, eutrophic conditions and other environmental factors promote the proliferation of the plant in regions where it has been introduced. Regarded as among the world’s worst invasive weeds, WH is nearly impossible to control and eradicate without an integrated approach and community participation. The effectiveness of control methods varies, yet sustained community involvement determines the long-term success of these methods. Reproducing rapidly, WH has the resource capacity to support a unique microeconomic ecosystem, incentivising WH control by generating sustainable income. The WH ecology, the socioeconomic impacts of its invasion and its various applications are reviewed, and revenue generation and cost-saving options are highlighted. A circular microeconomic model is proposed by integrating WH valorisation into the general limitations of a rural community. Empowering locals with opportunities and enticing them with potential economic gains can be a nudge towards a pro-environment behavioural change in managing WH. This would aid in upgrading local livelihoods and could foster resilience within the community in tackling both environmental problems and economic setbacks through the management of WH invasions.

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Section: Prospects For Water Hyacinthmentioning

confidence: 99%

Section: Prospects For Water Hyacinthmentioning

confidence: 99%

Section: Prospects For Water Hyacinthmentioning

confidence: 99%

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Invasive Water Hyacinth: Ecology, Impacts and Prospects for the Rural Economy

Harun

Pushiri

Juhari

et al. 2021

Plants

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“…Hyacinth pre‐treatment has been proven to increase biogas yield . Various pre‐treatment methods have been exploited, including physical, chemical and biological methods . A study conducted by Ofoefule et al .…”

Section: Introductionmentioning

confidence: 99%

“…1,[6][7][8] Various pre-treatment methods have been exploited, including physical, chemical and biological methods. 1,3,[6][7][8][9][10] A study conducted by Ofoefule et al 1 showed that physical pre-treatment of water hyacinth using the drying method and the addition of cow dung resulted in increased biogas yield, while chemical methods conveyed no significant biogas yield improvement. \ Similarly, in a study conducted by Patil et al, 6 it was observed that physical pre-treatment in the form of hyacinth blending combined with the addition of poultry waste resulted in significant increases in biogas yield in comparison with chemical pre-treatment with NaOH, which resulted in relatively minimal biogas yield improvements.…”

Section: Introductionmentioning

confidence: 99%

New insights into the metagenomic link between pre‐treatment method, addition of an inoculum and biomethane yield during anaerobic digestion of water hyacinth (Eichhornia crassipes)

Roopnarain

Nkuna

Ndaba

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND Water hyacinth (Eichhornia crassipes) is a fast growing water weed that threatens the aquatic ecosystem and human activities, hence control of the plant is essential. One such control approach is to harvest and utilize hyacinth as a substrate for anaerobic digestion (AD). Various factors influence AD performance, including substrate pre‐treatment and microbial community composition, amongst others. This study was aimed at establishing the link between method of substrate pre‐treatment, microbial diversity, inoculum addition and biogas yield during AD of hyacinth. RESULTS The addition of an inoculum resulted in microbial community stability and early biomethane production of up to 0.4 L irrespective of pre‐treatment method. However, cultures that lacked inoculum showed distinct microbial community structure variation in response to pre‐treatment method, and minimal early biomethane production (up to 0.1 L). Biogas produced by cultures lacking inoculum was initially mostly composed of carbon dioxide (up to 100% of total biogas), but as digestion proceeded, an increase in biomethane production was observed (up to 60% of total biogas), which correlated with the shift in microbial community structure and increased microbial diversity. This indicates the presence of biogas‐producing microorganisms associated with the collected hyacinth. Canonical correspondence analysis proved that dynamic changes in microbial community structure and biogas yield were strongly correlative. CONCLUSION This study proves that hyacinth pre‐treatment influences microbial community structure and concomitant biogas yield in the absence of an inoculum. The addition of an inoculum aids in stability of microbial community structure and biogas yield irrespective of method of hyacinth pre‐treatment. © 2019 Society of Chemical Industry

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Renewable Energy Derived from Water Hyacinth Through Hydrothermal Gasification

Kerdsuwan

Laohalidanond

2020

Sustainable Development for Energy, Power, and Propulsion

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Water hyacinth biomass: chemical and thermal pre-treatment for energetic utilization in anaerobic digestion process

Cited by 42 publications

References 20 publications

Invasive Water Hyacinth: Ecology, Impacts and Prospects for the Rural Economy

Invasive Water Hyacinth: Ecology, Impacts and Prospects for the Rural Economy

New insights into the metagenomic link between pre‐treatment method, addition of an inoculum and biomethane yield during anaerobic digestion of water hyacinth (Eichhornia crassipes)

Renewable Energy Derived from Water Hyacinth Through Hydrothermal Gasification

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