Pyrolysis behaviors and thermodynamics properties of hydrochar from bamboo ( Phyllostachys heterocycla cv. pubescens ) shoot shell

Guo, Shuqing; Dong, Xiaofeng; Zhu, Caixia; Han, Yangyang; Fu-qin, MA; Wu, Tingting

doi:10.1016/j.biortech.2017.02.072

Cited by 30 publications

(7 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…HTC is a thermochemical conversion process in which biomass is converted to a high carbonaceous solid product after heating for 5 to 240 min in an aqueous closed system at a temperature of 180˚C -250˚C and autogenous pressure of 2 -6 MPa [16]- [22]. HTC is considered as a cost-effective approach to produce hydrochar due to its ability to transform wet biomass into hydrochar without predrying [15] as well as mild conditions [23] [24].…”

Section: Introductionmentioning

confidence: 99%

Experimental, Thermodynamic and Kinetic Studies for the Adsorption of Phenolic Compounds Derived from Oilfield Wastewater by the Corncob Hydrochar

Xie¹,

Ding²,

Liu³

et al. 2019

OJOGas

View full text Add to dashboard Cite

The corncob hydrochar is prepared by using a stainless autoclave at 230˚C for 8 h. The products are characterized by elemental analyzer, Fourier Transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and scanning electron microscope (SEM). The effects of hydrochar dosage, pH, adsorption time and phenol concentration on the adsorption performance of hydrochar are investigated by means of single-factor experimental analysis. Based on the experiments the adsorption thermodynamic and kinetics are tentatively discussed. The results show that abundant oxygen-containing functional groups are scattered on the surface of the corncob hydrochar. The adsorption kinetics of phenol on the hydrochar corresponds well with pseudo-second-order kinetic model. Thermodynamic studies indicate that Freundlich adsorption isotherm model is much better than Langmuir model in describing the adsorption of phenol on the corncob hydrochar at 25˚C-45˚C. This study provides scientific basis for the development of cheap and efficient adsorbents for the removal of phenols derived from oilfield wastewater.

show abstract

Section: Introductionmentioning

confidence: 99%

Experimental, Thermodynamic and Kinetic Studies for the Adsorption of Phenolic Compounds Derived from Oilfield Wastewater by the Corncob Hydrochar

Xie¹,

Ding²,

Liu³

et al. 2019

OJOGas

View full text Add to dashboard Cite

show abstract

“…Hydrochar property is dependent upon its precursor sources like rice husk, tomato leaves, banana stem, municipal waste and many others [10,129,164]. In literature, it has been reported that hydrochar contains oxygencontaining functional groups and shows hydrophobic nature [56,58]. During the HTC process, lignin and cellulose content from hydrochar get diminished and show HHV.…”

Section: Hydrothermal Carbonization Of Biomassmentioning

confidence: 99%

“…Rice-husk To characterize morphology and crystalline structure [17,146] a temperature lower than 200 °C would give a higher yield of hydrochar rather than temperature beyond 200 °C [195]. Thermodynamic properties of the hydrochar have revealed that its yield and properties can be expressed as a function of dose-response, and hence there occur significant variations in the properties and yield by a change in the temperature [56,58,189,[192][193][194].…”

Section: Temmentioning

confidence: 99%

A Comprehensive Review on Hydrothermal Carbonization of Biomass and its Applications

et al. 2019

View full text Add to dashboard Cite

Hydrothermal carbonization (HTC) has gained a lot of interest in the last few years for the process production of hydrochar from the different kinds of biological materials such as agricultural waste. Therefore, a thorough review of the literature on HTC has been conducted, which is more energy-efficient and involves hydrochar preparation at a lower temperature without any specific requirements for pressure. This review article primarily differentiates between the hydrochar and biochar developed from various sources. Also, a comparative analysis has been done to evaluate the maximum efficiency of hydrochar production. The various parameters, which influence the hydrochar yield to include pH, temperature, the concentration of the modifying agent, duration of exposure, salt, and phenolic compounds, have also been highlighted in this review. The scale-up processes for industrial level hydrochar production, along with bioreactor designs, have also been discussed. We have also focused on various applications of hydrochar, such as adsorbent in wastewater treatment, carbon sequestration, gas adsorption and in the field of agriculture for soil amendment. The adsorption effects of hydrochar towards the partial and proportionate adsorption of heavy metals and hazardous chemicals have been depicted. This review of the literature clearly illustrates the role of HTC in environmental remediation of soil, air and water and its usage in various industries.

show abstract

“…In recent years, porous nitrogen-doped carbon materials derived from biomass has gained much attention because the sources are abundant, cheap and renewable [27,28]. In this study, bamboo shoot is chosen as a precursor because it is a kind of rapidly growing biomass material and is widely planted in China [29]. Bamboo shoots also have abundant carbohydrate, amino acids and nucleotides [30].…”

Section: Introductionmentioning

confidence: 99%

Nitrogen-Doped Porous Carbon Derived from Bamboo Shoot as Solid Base Catalyst for Knoevenagel Condensation and Transesterification Reactions

Chen

Jiang

et al. 2018

Catalysts

View full text Add to dashboard Cite

Highly porous nitrogen-doped carbons derived from bamboo shoots (BSNCs) were prepared through an in-situ synthesis method. The results showed that BSNCs had a large specific surface area, a relatively high nitrogen content and hierarchically porous structures. The catalytic properties of BSNCs were evaluated based on Knoevenagel condensation and transesterification reactions. Deprotonated BSNC-700 exhibited high efficiency for the model reactions as a solid base catalyst, and the superior sample deprotonated in tBuOK solution with a concentration of 0.1 increased the conversion rate from 16.1% to 76.0% for Knoevenagel condensation. The two reactions proceeded smoothly in the presence of deprotonated BSNC-700. The results also showed that the catalyst could be recycled for several times for Knoevenagel condensation. The results from this research will provide a guideline to develop bamboo shoot as a precursor to fabricate a superb solid base catalyst.

show abstract

Pyrolysis behaviors and thermodynamics properties of hydrochar from bamboo ( Phyllostachys heterocycla cv. pubescens ) shoot shell

Cited by 30 publications

References 33 publications

Experimental, Thermodynamic and Kinetic Studies for the Adsorption of Phenolic Compounds Derived from Oilfield Wastewater by the Corncob Hydrochar

Experimental, Thermodynamic and Kinetic Studies for the Adsorption of Phenolic Compounds Derived from Oilfield Wastewater by the Corncob Hydrochar

A Comprehensive Review on Hydrothermal Carbonization of Biomass and its Applications

Nitrogen-Doped Porous Carbon Derived from Bamboo Shoot as Solid Base Catalyst for Knoevenagel Condensation and Transesterification Reactions

Contact Info

Product

Resources

About