Solvothermal Liquefaction of Corn Stalk: Physico-Chemical Properties of Bio-oil and Biochar

Nizamuddin, Sabzoi; Baloch, Humair Ahmed; Mubarak, Nabisab Mujawar; Riaz, Sajid; Siddiqui, M.T.H.; Takkalkar, Pooja; Tunio, M. M.; Mazari, Shaukat Ali; Bhutto, Abdul Waheed

doi:10.1007/s12649-018-0206-0

Cited by 26 publications

(11 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An increase in the fixed carbon and a decrease in the volatile matter are affected by the reaction temperature because biomass degrades significantly at higher temperatures resulting in a decreasing volatile matter and ultimately enhancing the fixed carbon content [48]. A rise in the value of fixed carbon is indicated by a release of volatile matters taking place during the MIHTC [51]. Nizamuddin et al [23] observed an increased in fixed carbon after the MIHTC of rice husk and suggested that it is attributed to the release of the higher amount of volatile matters during the MHTC of rice husk.…”

Section: Resultsmentioning

confidence: 99%

Microwave Hydrothermal Carbonization of Rice Straw: Optimization of Process Parameters and Upgrading of Chemical, Fuel, Structural and Thermal Properties

et al. 2019

Self Cite

View full text Add to dashboard Cite

The process parameters of microwave-induced hydrothermal carbonization (MIHTC) play an important role on the hydrothermal chars (hydrochar) yield. The effect of reaction temperature, reaction time, particle size and biomass to water ratio was optimized for hydrochar yield by modeling using the central composite design (CCD). Further, the rice straw and hydrochar at optimum conditions have been characterized for energy, chemical, structural and thermal properties. The optimum condition for hydrochar synthesis was found to be at a 180 °C reaction temperature, a 20 min reaction time, a 1:15 weight per volume (w/v) biomass to water ratio and a 3 mm particle size, yielding 57.9% of hydrochar. The higher heating value (HHV), carbon content and fixed carbon values increased from 12.3 MJ/kg, 37.19% and 14.37% for rice straw to 17.6 MJ/kg, 48.8% and 35.4% for hydrochar. The porosity, crystallinity and thermal stability of the hydrochar were improved remarkably compared to rice straw after MIHTC. Two characteristic peaks from XRD were observed at 2θ of 15° and 26°, whereas DTG peaks were observed at 50–150 °C and 300–350 °C for both the materials. Based on the results, it can be suggested that the hydrochar could be potentially used for adsorption, carbon sequestration, energy and agriculture applications.

show abstract

Section: Resultsmentioning

confidence: 99%

Microwave Hydrothermal Carbonization of Rice Straw: Optimization of Process Parameters and Upgrading of Chemical, Fuel, Structural and Thermal Properties

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…The FTIR spectra of STL liquid products enable molecular structure and predominant bonds 43 . Therefore, the FTIR analysis of all STL liquid samples were performed at wavenumbers of 400–4000 cm −1 .…”

Section: Resultsmentioning

confidence: 99%

“…The FTIR spectra of STL liquid products enable molecular structure and predominant bonds. 43 Therefore, the FTIR analysis of all STL liquid samples were performed at wavenumbers of 400-4000 cm À1 . As shown in Figure 3, all STL liquid samples have identical peaks apart from a few minor changes in peaks.…”

Section: Ftir Analysis Of Stl Liquid Productsmentioning

confidence: 99%

Solvothermal liquefaction of waste polyurethane using supercritical toluene in presence of noble metal catalysts

et al. 2022

View full text Add to dashboard Cite

Solvothermal liquefaction (STL) is a thermochemical conversion method that uses sub-or supercritical solvents to convert waste plastics like waste polyurethane (PU) into value-added chemicals. This study aimed to evaluate catalytic STL utilizing toluene as a solvent for depolymerization of waste PU into valuable products. The effect of catalyst type (Pt/C, Pd/C, and Ru/C), catalyst loading (0-10 wt%), STL reaction temperature (330 C, 350 C, and 370 C), STL residence time (1, 3, and 5 h), and hydrogen loading (25, 50, and 75 bar) on STL conversion were studied. Results showed that Ru/C outperformed Pt/C and Pd/C and the STL conversion reached to as high as 87.2%. The concentrations of nitrogen-containing components like aniline and p-aminotoluene were increased with the increase of Ru/C loading and STL reaction temperature.

show abstract

“…In the present work, it was found that the recovery rates of Ca, Na, and Mg were increased in BOs produced from liquefaction in the presence of PA and followed the order PA-300 > CS− PA300 > CS-W300. According to Nizamuddin et al, 41 the metals in BO can be aggregated from the reaction substrate during the HTL process, which was why the distribution of metal elements in the HTL products was so obviously affected by the presence of PA during the liquefaction process.…”

Section: Characterization Of Hapsmentioning

confidence: 99%

Hydrothermal Liquefaction of Cornstalk by Reusing Pyroligneous Acid: Synergistic Effects on Biocrude Oil Formation and Solid Residue Accumulation

Tian

Zhang

et al. 2021

Energy Fuels

View full text Add to dashboard Cite

The reuse of process wastewater as a reaction medium in hydrothermal liquefaction (HTL) of biomass to enhance biocrude oil (BO) production has been investigated, but the interaction between the biomass and process wastewater has rarely been studied. In the present work, pyroligneous acid (PA) was used as the reaction medium and substrate during the HTL process of cornstalk (CS). Hydrothermal conversion of PA itself, HTL of CS with water, and coliquefaction of CS and PA were carried out in a high-temperature and high-pressure batch reactor. Effects of reaction temperature and PA on the yields and characteristics of products were investigated. The PA itself was hydrothermally converted into BO, solid residue (SR), an aqueous phase, and gases. Reaction temperature had a strong influence on the product distribution during the coliquefaction of CS and PA but little influence on products during PA hydrothermal conversion. The highest BO yield from PA hydrothermal conversion occurred at 300 °C (28.96 wt %). For the coliquefaction of CS and PA, the highest experimental BO yield was 31.29 wt % at 300 °C, exceeding its corresponding theoretical value by 3.28 wt %; the experimental SR yield at 350 °C was 13.01 wt %, with the highest increase of 3.34 wt % compared to its corresponding theoretical value. The synergistic effects of CS and PA occurred at high temperatures (300 and 350 °C), promoting BO formation and strengthening SR accumulation, possibly due to the interactions among the compounds dissolved in PA and the components of CS. The BOs obtained from CS and PA coliquefaction had similar C, H, and O contents and higher heating values (HHVs) than those of HTL of CS, suggesting that the reuse of PA in HTL did not compromise the oil quality. Compared with the HTL of CS with water, CS and PA coliquefaction resulted in reduced concentrations of phenols, N-containing compounds, and organic acids and higher concentrations of ketones, alcohols, and hydrocarbons. Hence, PA clearly affected the distribution of organic components in BOs. In addition, more carbonaceous SRs were produced from coliquefaction with C and O contents of 65.

show abstract

Solvothermal Liquefaction of Corn Stalk: Physico-Chemical Properties of Bio-oil and Biochar

Cited by 26 publications

References 52 publications

Microwave Hydrothermal Carbonization of Rice Straw: Optimization of Process Parameters and Upgrading of Chemical, Fuel, Structural and Thermal Properties

Microwave Hydrothermal Carbonization of Rice Straw: Optimization of Process Parameters and Upgrading of Chemical, Fuel, Structural and Thermal Properties

Solvothermal liquefaction of waste polyurethane using supercritical toluene in presence of noble metal catalysts

Hydrothermal Liquefaction of Cornstalk by Reusing Pyroligneous Acid: Synergistic Effects on Biocrude Oil Formation and Solid Residue Accumulation

Contact Info

Product

Resources

About