Co-hydrothermal carbonization of pineapple and watermelon peels: Effects of process parameters on hydrochar yield and energy content

Azaare, Louis; Commeh, Michael Kweku; Smith, Aidan M.; Kemausuor, Francis

doi:10.1016/j.biteb.2021.100720

Cited by 14 publications

(6 citation statements)

References 42 publications

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“…The band with the maximum absorption at 1448 cm −1 could be associated to C-H deformation in lignin and carbohydrates [80][81][82]. Moreover, the peak at 1318 cm −1 became weaker with the increase of temperature.…”

Section: Fourier Transform Infrared Spectroscopymentioning

confidence: 97%

A Sustainable Approach on Spruce Bark Waste Valorization through Hydrothermal Conversion

et al. 2022

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In the context of sustainable use of resources, hydrothermal conversion of biomass has received increased consideration. As well, the hydrochar (the solid C-rich phase that occurs after the process) has caused great interest. In this work, spruce bark (Picea abies) wastes were considered as feedstock and the influence of hydrothermal process parameters (temperature, reaction time, and biomass to water ratio) on the conversion degree has been studied. Using the response surface methodology and MiniTab software, the process parameters were set up and showed that temperature was the significant factor influencing the conversion, while residence time and the solid-to-liquid ratio had a low influence. Furthermore, the chemical (proximate and ultimate analysis), structural (Fourier-transform infrared spectroscopy, scanning electron microscopy) and thermal properties (thermogravimetric analysis) of feedstock and hydrochar were analyzed. Hydrochar obtained at 280 °C, 1 h processing time, and 1/5 solid-to-liquid ratio presented a hydrophobic character, numerous functional groups, a lower O and H content, and an improved C matter, as well as a good thermal stability. Alongside the structural features, these characteristics endorsed this waste-based product for applications other than those already known as a heat source.

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Section: Fourier Transform Infrared Spectroscopymentioning

confidence: 97%

A Sustainable Approach on Spruce Bark Waste Valorization through Hydrothermal Conversion

et al. 2022

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“…The data-driven methods applied to model hydrothermal treatment processes and predict biocrude and/or hydrochar yield included 18% (50% statistical and 50% ML methods) of all the applications reviewed in the literature (Figure a and Table S9). Among the data-driven models of hydrothermal treatment, 15% were MLR models − and 35% were MPR models ,− (Figure a and Table S9). These models were developed using primary data that involved operational parameters (e.g., temperature, residence time, biomass/water ratio) for multiple feedstocks (organic municipal solid waste, agricultural and forestry residue).…”

Section: Applications Of Data Science In Rrcc From Organic Waste Streamsmentioning

confidence: 99%

A Critical Review of Data Science Applications in Resource Recovery and Carbon Capture from Organic Waste

Zaki,

Rowles,

Adjeroh

et al. 2023

ACS EST Eng.

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Municipal and agricultural organic waste can be treated to recover energy, nutrients, and carbon through resource recovery and carbon capture (RRCC) technologies such as anaerobic digestion, struvite precipitation, and pyrolysis. Data science could benefit such technologies by improving their efficiency through data-driven process modeling along with reducing environmental and economic burdens via life cycle assessment (LCA) and techno-economic analysis (TEA), respectively. We critically reviewed 616 peer-reviewed articles on the use of data science in RRCC published during 2002−2022. Although applications of machine learning (ML) methods have drastically increased over time for modeling RRCC technologies, the reviewed studies exhibited significant knowledge gaps at various model development stages. In terms of sustainability, an increasing number of studies included LCA with TEA to quantify both environmental and economic impacts of RRCC. Integration of ML methods with LCA and TEA has the potential to costeffectively investigate the trade-off between efficiency and sustainability of RRCC, although the literature lacked such integration of techniques. Therefore, we propose an integrated data science framework to inform efficient and sustainable RRCC from organic waste based on the review. Overall, the findings from this review can inform practitioners about the effective utilization of various data science methods for real-world implementation of RRCC technologies.

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“…m (g) is the mass of sorbent and V (L) is the solution volume. The influence of pH was studied at different pH levels (2)(3)(4)(5)(6)(7)(8)(9)(10)(11), constant initial concentration (100 mg/L) and temperature (293 K). The solutions pHs were adjusted using HCl and NaOH (0.1 M).…”

Section: Adsorption Studiesmentioning

confidence: 99%

“…Many researchers have studied with various waste mixtures to understand and elucidate the co-HTC treatment and have studied synergistic and antagonistic impacts of different factors such as temperature, reaction time and mixing ratio on the co-HTC process. Polyvinylchloride (PVC)bamboo powder [8], graphene oxide-tobacco waste [9], rice bran-sludge sludge [10], pineapple-watermelon peels [11], pig-chicken manures [12], banana peels-sludge sludge [13] can be given as an example of co-HTC application. Although carbon-based adsorbent materials obtained by the thermal conversion of a single biomass were used in previous tetracycline removal studies, relatively quantitative information on the contribution of the adsorbent obtained by the co-hydrothermal conversion of two different biomass to tetracycline removal is still lacking.…”

Section: Introductionmentioning

confidence: 99%

Sulu Çözeltide Tetrasiklin Giderimi için Fındık ve Antep Fıstığı Kabuklarının Eş-karbonizasyonundan Elde Edilen Yeni Hidrokömürün Kullanımı

SAYĞILI,

AKKAYA SAYĞILI

2023

Bayburt Üniversitesi Fen Bilimleri Dergisi

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In present work, the use of a new hydrochar (HSPSHC) produced by the combined hydrothermal carbonization (co-HTC) of hazelnut and pistachio shells (HS and PS) as a sorbent material in tetracycline (TC) antibiotic removal from water was investigated. It was obtained from hydrothermal carbonization of HSPSHC, hazelnut and pistachio shells by mixing 1:1 by mass at 220 oC for 6 h. Mass yield, energy density and higher heating value parameters were calculated for HSPSHC, and the surface chemistry was characterised using Fourier transform infrared spectroscopy (FTIR). TC adsorption on HSPSHC was carried out by kinetic and isotherm studies using batch method. The experimental kinetic results were qualified in pseudo first-order (PFO) and second-order (PSO) kinetic equations and it was observed that the adsorption complied with the PSO kinetics. The experimentally obtained results were applied to Langmuir and Freundlich model equations and isotherm modeling was performed. The adsorption isotherm of TC on the prepared hydrochar was well fitted by the Langmuir equation, which yielded a maximum monolayer adsorption capacity of TC of qm: 137.06 mg/g at 323 K and pH 4.0 on the HSPSHC hydrochar. In addition, thermodynamic studies revealed that the adsorption of TC by HSPSHC is spontaneous and is an endothermic process.

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Co-hydrothermal carbonization of pineapple and watermelon peels: Effects of process parameters on hydrochar yield and energy content

Cited by 14 publications

References 42 publications

A Sustainable Approach on Spruce Bark Waste Valorization through Hydrothermal Conversion

A Sustainable Approach on Spruce Bark Waste Valorization through Hydrothermal Conversion

A Critical Review of Data Science Applications in Resource Recovery and Carbon Capture from Organic Waste

Sulu Çözeltide Tetrasiklin Giderimi için Fındık ve Antep Fıstığı Kabuklarının Eş-karbonizasyonundan Elde Edilen Yeni Hidrokömürün Kullanımı

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