From trash to treasure: Sourcing high-value, sustainable cellulosic materials from living bioreactor waste streams

Harrison, T. R.; Gupta, Vijai Kumar; Alam, Parvez; Perriman, Adam W.; Scarpa, Fabrizio; Thakur, Vijay Kumar

doi:10.1016/j.ijbiomac.2023.123511

Cited by 14 publications

(4 citation statements)

References 73 publications

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“…Moreover, although the organic content is relatively high, the availability is low (difficult to decompose during anaerobic fermentation processes [108,109]). Some researchers estimate that up to half of the solid matter in manure is undigested elements, containing mainly cellulose, lignin and hemicellulose [106,110].…”

Section: Discussionmentioning

confidence: 99%

Loss of Energy and Economic Potential of a Biogas Plant Fed with Cow Manure due to Storage Time

Mazurkiewicz

2023

Energies

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The aim of the publication was to analyze investments in biogas plants with a cogeneration unit for an average size dairy farm. The basis for the calculation was the use of cow manure as the only substrate in methane fermentation. The economic balance also includes ecological and service aspects. The study also shows how much energy and quality potential is lost due to improper manure management and what impact a single farm with dairy cows has on the emission of carbon dioxide equivalent. It has been estimated that as a result of improper storage of manure, even 2/3 of its fertilizing, energy and economic value can be lost, while causing damage to the environment. It has been estimated that for a single farm with 100 cows, without government mechanisms subsidizing investments in RES, the payback period exceeds 15 years, and the Return of Capital Employed is slightly more than 6%.

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Section: Discussionmentioning

confidence: 99%

Loss of Energy and Economic Potential of a Biogas Plant Fed with Cow Manure due to Storage Time

Mazurkiewicz

2023

Energies

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“…The peak at 1638 cm -1 is assigned to the -C=O group and represents the deformation due to H2O, which causes water absorption. Both peaks illustrate the presence of hydrogen bonds and bending hydroxyl groups in the cellulose structure in CM and CMF samples [16]. After the purification process, the wavenumbers shifted due to impurities that bound with the cellulose structure had been removed.…”

Section: Ftir Analysismentioning

confidence: 99%

Development of Green Composite Based on Recycled-Low Density Polyethylene (r-LDPE) as an Environmentally Friendly Packaging

Hamdiani,

Kamali,

Ismillayli

et al. 2024

J. Pijar.MIPA

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Low-Density Polyethylene (LDPE) is one of the most popular and commonly used petroleum-derived thermoplastics for packaging. The large production of LDPE has an environmental impact. Reducing production can be done by recycling LDPE (r-LDPE) and adding organic fibres as a filler that is easily decomposed. Cattle farming solid waste as a fibre source was mixed with r-LDPE with coupling agent maleic anhydride (MA). Before use, the cow manure was processed through a bleaching and hemicellulose removal process, which resulted in Cow Manure Fiber (CMF). The CMF was analyzed using FTIR spectroscopy and microscopic fibre dimension analysis. The FTIR results showed peaks at wavenumbers 3538 and 1056 cm-1, representing the -OH, -C-O and -CH functional groups from the cellulose structure. The resulting composites were tested for physical properties, including elastic modulus, yield stress, and elongation. Pure LDPE material was also used for comparison. The best physical properties of the composites were obtained by composites with 95% r-LDPE, 5% CMF, and 2% MA.

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“…Different regions have varying amounts of trash. The presence of dangerous materials means that special care must be taken when disposing of this trash 8 . Although many countries have developed laws and regulations to address waste, the quantity of waste produced and the implementation of regulations differ from place to place 9 , 10 .…”

Section: Introductionmentioning

confidence: 99%

Modelling the mechanical properties of concrete produced with polycarbonate waste ash by machine learning

Sathvik,

Kumar,

Ulloa

et al. 2024

Sci Rep

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India’s cement industry is the second largest in the world, generating 6.9% of the global cement output. Polycarbonate waste ash is a major problem in India and around the globe. Approximately 370,000 tons of scientific waste are generated annually from fitness care facilities in India. Polycarbonate waste helps reduce the environmental burden associated with disposal and decreases the need for new raw materials. The primary variable in this study is the quantity of polycarbonate waste ash (5, 10, 15, 20 and 25% of the weight of cement), partial replacement of cement, water-cement ratio and aggregates. The mechanical properties, such as compressive strength, split tensile strength and flexural test results, of the mixtures with the polycarbonate waste ash were superior at 7, 14 and 28 days compared to those of the control mix. The water absorption rate is less than that of standard concrete. Compared with those of conventional concrete, polycarbonate waste concrete mixtures undergo minimal weight loss under acid curing conditions. Polycarbonate waste is utilized in the construction industry to reduce pollution and improve the economy. This study further simulated the strength characteristics of concrete made with waste polycarbonate ash using least absolute shrinkage and selection operator regression and decision trees. Cement, polycarbonate waste, slump, water absorption, and the ratio of water to cement were the main components that were considered input variables. The suggested decision tree model was successful with unparalleled predictive accuracy across important metrics. Its outstanding predictive ability for split tensile strength (R2 = 0.879403), flexural strength (R2 = 0.91197), and compressive strength (R2 = 0.853683) confirmed that this method was the preferred choice for these strength predictions.

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From trash to treasure: Sourcing high-value, sustainable cellulosic materials from living bioreactor waste streams

Cited by 14 publications

References 73 publications

Loss of Energy and Economic Potential of a Biogas Plant Fed with Cow Manure due to Storage Time

Loss of Energy and Economic Potential of a Biogas Plant Fed with Cow Manure due to Storage Time

Development of Green Composite Based on Recycled-Low Density Polyethylene (r-LDPE) as an Environmentally Friendly Packaging

Modelling the mechanical properties of concrete produced with polycarbonate waste ash by machine learning

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