Hydrothermal processing of microalgal biomass: Circular bio-economy perspectives for addressing food-water-energy nexus

Behera, Bunushree; Selvam, S. Mari; Balasubramanian, P.

doi:10.1016/j.biortech.2022.127443

Cited by 23 publications

(5 citation statements)

References 112 publications

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“…Indeed, a study by Duan et al (2020) reported that organic solid waste biorefinery is considered a promising approach for achieving a CBE in China, which can contribute to environmental protection and sustainable development by reducing greenhouse gas emissions and conserving biodiversity. Moreover, hydrothermal processing of microalgal biomass is regarded as a promising technology to generate a multitude of energy-based and value-added products (biochar, biofertilizers, and platform chemicals) (Behera et al, 2022). Utilizing algal biomass for hydrothermal processing makes it a viable bioresource providing ample opportunities to establish and integrate the value and supply chain products for addressing the issues linked to the combined nexus.…”

Section: Wef Nexus With Cbementioning

confidence: 99%

Optimizing water-energy-food nexus: achieving economic prosperity and environmental sustainability in agriculture

Ansari,

Wuryandani,

Pranesti

et al. 2023

Front. Sustain. Food Syst.

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The increasing global population, rapid urbanization, and climate change are putting unprecedented pressure on limited water and energy resources for food production. It requires integrated management of the key resources to achieve economic and environmental sustainability. The water-energy-food (WEF) nexus, in conjunction with circular bioeconomy (CBE) principles, offer a promising approach to achieve sustainable agriculture. It provides the integration between interconnectedness and interdependencies of the resources through closing bio-resource loops. Using bio-based materials, renewable energy resources, and implementing energy-efficient practices and technologies can maximize synergistic among the resources and promote sustainable agriculture while minimizing negative environmental impacts. However, there are challenges and limitations, such as economic conditions, proper infrastructure and technology, policy and governance support, public awareness, and potential trade-offs and conflicts. Moreover, it also faces various social and cultural challenges in implementing this approach. Therefore, to overcome these challenges and limitations, the need for innovative and sustainable technologies, significant investments in research and development, infrastructure and training, environmental campaign, innovative financing mechanisms and policies that incentivize sustainable practices, and support from stakeholders and the public are essential.

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Section: Wef Nexus With Cbementioning

confidence: 99%

Optimizing water-energy-food nexus: achieving economic prosperity and environmental sustainability in agriculture

Ansari,

Wuryandani,

Pranesti

et al. 2023

Front. Sustain. Food Syst.

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“…Hydrothermal processing of algal biomass in the presence of water at high temperatures and pressures promotes thermal degradation of the material [93]. This section reviews recent developments in hydrothermal processing techniques used for the conversion of algal biomass to various bioproducts.…”

Section: Hydrothermal Processingmentioning

confidence: 99%

Algae: Nature’s Renewable Resource for Fuels and Chemicals

Chakraborty,

Dunford

2024

Biomass

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Microalgae-based renewable energy, industrial chemicals, and food have received great attention during the last decade. This review article highlights the versatility of algal biomass as a feedstock for producing various commodities and high-value products, including aromatic hydrocarbons and lipids within biorefinery systems. Lipid content and the composition of algal biomass cultivated in various media, specifically in wastewater streams generated at agricultural and industrial production facilities, are reviewed. Technical and chemical aspects of algal biomass conversion via thermochemical techniques including pyrolysis, hydrothermal liquefaction, and hydrothermal carbonization are discussed. The properties of the final products are reviewed based on the conversion process employed. Studies published within the last 5 years are reviewed. The importance of further research on inexpensive and more effective catalysts and the development of downstream processes to upgrade crude products obtained from thermal conversion processes is emphasized. This review concludes with an in-depth discussion of the opportunities and challenges involved in algal biomass-based bioproduct manufacturing and commercialization.

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“…The reactor with the addition of nutrients has a lower pH compared to the reactor without the addition of nutrients, this is because the 10% S contained in the fertilizer will react with water, oxygen and CO molecules.2 in the soil will produce sulfate ions and a number of H ions + . This was also clarified by (Behera et al, 2022) stating that fertilization can lower soil pH because fertilizers contain sulfur and ammonium which will hydrolyze to produce H+ ions, causing soil pH to decrease. Meanwhile, an increase in pH can occur due to the influence of the decomposition process of organic matter (Averill & Waring, 2018).…”

Section: Degree Of Acidity (Ph)mentioning

confidence: 99%

“…These bacteria are called hydrocarbonclastic bacteria. In degrading hydrocarbon compounds, bacteria utilize these compounds as a source of carbon and energy needed for their growth (Bhaktinagara et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Bioremediation of Kerosene Contaminated Soil with the Addition of Bacillus cereus Bacteria

Safrilia,

Purwanti

2023

AJESH

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The development of road development in Indonesia is directly proportional to the needs of human transportation, among the many types of road pavements, the use of asphalt as a road pavement material is the main choice. Buton asphalt (Asbuton) is a mixture of asphalt with other mineral materials in the form of rocks. To obtain pure asbuton it is necessary to carry out extraction. Kerosene is widely used as a solvent in the manufacture of asphalt. It causes environmental pollution and leads to loss of ecological function and health problems. One environmentally friendly, economical, and effective method to overcome oil pollution is to use bioremediation technology. Bacillus cereus bacteria are believed to be able to reduce oil levels in the soil because Bacillus cereus is classified as a hydrocarbonclastic bacterium, besides that Bacillus cereus is also able to produce enzymes that can hydrolyze complex proteins and polysaccharides and form endospores. In this study, the soil samples used were spiked soil with a polluting source in the form of kerosene with a concentration of 10% (w / w). Variables in this study include variations in the addition of bacterial inoculum and variations in nutrient addition. The study was conducted on a laboratory scale for 15 days. The analysis used in this study is Total Petroleoum Hydrocarbon (TPH) with gravimetric method to determine the oil content contained in waste, and Total Plate Count (TPC) to determine the number of bacterial colonies, temperature, pH, and water content. The results showed the best rate of reduction in kerosene concentration with the addition of 10% inoculum concentration and with the addition of nutrients. Bacillus cereus was able to reduce kerosene levels up to 67,499 mg / kg with a degradation rate of 26.58%.

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Hydrothermal processing of microalgal biomass: Circular bio-economy perspectives for addressing food-water-energy nexus

Cited by 23 publications

References 112 publications

Optimizing water-energy-food nexus: achieving economic prosperity and environmental sustainability in agriculture

Optimizing water-energy-food nexus: achieving economic prosperity and environmental sustainability in agriculture

Algae: Nature’s Renewable Resource for Fuels and Chemicals

Bioremediation of Kerosene Contaminated Soil with the Addition of Bacillus cereus Bacteria

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