scholarly journals Co‐combustion and ash characteristics of Zhundong coal with rice husk hydrochar prepared by the hydrothermal carbonization technology for co‐combustion

2021 ◽  
Author(s):  
Li Yang ◽  
Hui Wang ◽  
Jingwen Zhu ◽  
Wei Sun ◽  
Youning Xu ◽  
...  
Keyword(s):  
Rice Husk ◽  
Hydrothermal Carbonization ◽  
Zhundong Coal

scholarly journals Synthesis and characterization of rice husk biochar via hydrothermal carbonization for wastewater treatment and biofuel production

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Nazia Hossain ◽  
Sabzoi Nizamuddin ◽  
Gregory Griffin ◽  
Periasamy Selvakannan ◽  
Nabisab Mujawar Mubarak ◽  
...  
Keyword(s):  
Rice Husk ◽  
Agricultural Waste ◽  
Value Added ◽  
Hydrothermal Carbonization ◽  
Catalytic Performance ◽  
Biofuel Production ◽  
Suspension Stability ◽  
Waste Biomass ◽  
Suitable Material ◽  
Rice Husk Biochar

Abstract The recent implication of circular economy in Australia spurred the demand for waste material utilization for value-added product generations on a commercial scale. Therefore, this experimental study emphasized on agricultural waste biomass, rice husk (RH) as potential feedstock to produce valuable products. Rice husk biochar (RB) was obtained at temperature: 180 °C, pressure: 70 bar, reaction time: 20 min with water via hydrothermal carbonization (HTC), and the obtained biochar yield was 57.9%. Enhancement of zeta potential value from − 30.1 to − 10.6 mV in RB presented the higher suspension stability, and improvement of surface area and porosity in RB demonstrated the wastewater adsorption capacity. Along with that, an increase of crystallinity in RB, 60.5%, also indicates the enhancement of the catalytic performance of the material significantly more favorable to improve the adsorption efficiency of transitional compounds. In contrast, an increase of the atomic O/C ratio in RB, 0.51 delineated high breakdown of the cellulosic component, which is favorable for biofuel purpose. 13.98% SiO2 reduction in RB confirmed ash content minimization and better quality of fuel properties. Therefore, the rice husk biochar through HTC can be considered a suitable material for further application to treat wastewater and generate bioenergy.

N-Doped biochar derived from co-hydrothermal carbonization of rice husk and Chlorella pyrenoidosa for enhancing copper ion adsorption

RSC Advances ◽  
2016 ◽  
Vol 6 (59) ◽  
pp. 53713-53722 ◽  
Author(s):  
Chao Gai ◽  
Yanchuan Guo ◽  
Nana Peng ◽  
Tingting Liu ◽  
Zhengang Liu
Keyword(s):  
Rice Husk ◽  
Copper Ion ◽  
Chlorella Pyrenoidosa ◽  
Hydrothermal Carbonization ◽  
Ion Adsorption ◽  
Hydrothermal Environment

Biochar derived from rice husk was modified by microalgae Chlorella pyrenoidosa as a natural nitrogen-rich precursor in a hydrothermal environment for copper ion (Cu(ii)) adsorption.

Insights into mechanisms of hexavalent chromium removal from aqueous solution by using rice husk pretreated using hydrothermal carbonization technology

RSC Advances ◽  
2016 ◽  
Vol 6 (78) ◽  
pp. 74675-74682 ◽  
Author(s):  
Dahu Ding ◽  
Xin Ma ◽  
Wansheng Shi ◽  
Zhongfang Lei ◽  
Zhenya Zhang
Keyword(s):  
Aqueous Solution ◽  
Adsorption Capacity ◽  
Hexavalent Chromium ◽  
Rice Husk ◽  
Hydrothermal Carbonization ◽  
Chromium Removal

Hydrothermal carbonization technique enhanced the adsorption capacity of rice husk towards Cr(vi).

scholarly journals Hydrothermal carbonization of rice husk for fuel upgrading

2018 ◽  
Vol 297 ◽  
pp. 012007
Author(s):  
N. Suteerawattananonda ◽  
N. Kongkaew ◽  
S. Patumsawad
Keyword(s):  
Rice Husk ◽  
Hydrothermal Carbonization ◽  
Fuel Upgrading

scholarly journals Optimization of rice husk hydrochar via microwave-assisted hydrothermal carbonization: Fuel properties and combustion kinetics

2021 ◽  
pp. 100888
Author(s):  
Muhammad Fikri Zulkornain ◽  
Abd Halim Shamsuddin ◽  
Saifuddin Normanbhay ◽  
Juniza Md Saad ◽  
Mohd Faiz Muaz Ahmad Zamri
Keyword(s):  
Rice Husk ◽  
Hydrothermal Carbonization ◽  
Fuel Properties ◽  
Combustion Kinetics ◽  
Microwave Assisted

Hydrothermal Carbonization for Valorization of Rice Husk

2019 ◽  
pp. 105-122
Author(s):  
B. Sai Rohith ◽  
Naga Prapurna ◽  
Kuldeep B. Kamble ◽  
K. S. Rajmohan ◽  
Suranani Srinath
Keyword(s):  
Rice Husk ◽  
Hydrothermal Carbonization

Upgradation of chemical, fuel, thermal, and structural properties of rice husk through microwave-assisted hydrothermal carbonization

2018 ◽  
Vol 25 (18) ◽  
pp. 17529-17539 ◽  
Author(s):  
Sabzoi Nizamuddin ◽  
Muhammad Tahir Hussain Siddiqui ◽  
Humair Ahmed Baloch ◽  
Nabisab Mujawar Mubarak ◽  
Gregory Griffin ◽  
...  
Keyword(s):  
Structural Properties ◽  
Rice Husk ◽  
Hydrothermal Carbonization ◽  
Microwave Assisted

scholarly journals Rice husk hydrochars from metal chloride-assisted hydrothermal carbonization as biosorbents of organics from aqueous solution

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Yin Li ◽  
Fana Mulugeta Hagos ◽  
Rongrong Chen ◽  
Hanxin Qian ◽  
Chengxing Mo ◽  
...  
Keyword(s):  
Rice Husk ◽  
Photoelectron Spectroscopy ◽  
Congo Red ◽  
Hydrothermal Carbonization ◽  
Metal Chloride ◽  
Biomass Waste ◽  
Metal Chlorides ◽  
Berberine Hydrochloride ◽  
X Ray ◽  
Adsorption Capacities

AbstractHydrochar a carbon-rich material resulting from hydrothermal carbonization of biomass, has received substantial attention because of its potential application in various areas such as carbon sequestration, bioenergy production and environmental amelioration. A series of hydrochars were prepared by metal chloride-assisted hydrothermal carbonization of rice husk and characterized by elemental analysis, zeta potential, X-ray diffraction, Brunauer–Emmett–Teller measurements, Fourier transform infrared spectroscopy, thermogravimetric analysis, X-ray photoelectron spectroscopy and scanning electron microscopy. The results reveal that the prepared hydrochars have carbon contents ranging from 45.01 to 58.71%, BET specific areas between 13.23 and 45.97 m2/g, and rich O-containing functional groups on the surfaces. The metal chlorides added in the feedwater could improve the degree of carbonization and show significant effects on the physical, chemical and adsorption properties of the hydrochars. The adsorption of the selected organics on the hydrochars is a spontaneous and physisorption-dominated process. The hydrochars possess larger adsorption capacities for 2-naphthol than for berberine hydrochloride and Congo red, and the modeling maximum adsorption capacities of 2-naphthol are in the range of 170.1–2680 mg/g. The adsorption equilibrium could be accomplished in 10, 40 and 30 min for 2-naphthol, berberine hydrochloride and Congo red, respectively. These results suggest metal chloride-assisted hydrothermal carbonization a promising method for converting biomass waste into effective adsorbents for wastewater treatment.

Mechanoactivation Of Rice Husk Ash In Laboratory Conditions

2019 ◽  
pp. 20-26
Keyword(s):  
Mechanical Activation ◽  
Rice Husk ◽  
Amorphous Silica ◽  
Silicon Oxide ◽  
Rice Husk Ash ◽  
Pozzolanic Activity ◽  
Maximum Solubility ◽  
Laboratory Conditions ◽  
Before And After ◽  
Mineral Additive

In many rice producing countries of the world, including in Vietnam, various research aimed at using rice husk ash (RHA) as a finely dispersed active mineral additive in cements, concrete and mortars are being conducted. The effect of the duration of the mechanoactivation of the RHA, produced under laboratory conditions in Vietnam, on its pozzolanic activity were investigated in this study. The composition of ash was investigated by laser granulometry and the values of indicators characterizing the dispersion of its particles before and after mechanical activation were established. The content of soluble amorphous silicon oxide in rice husk ash samples was determined by photocolorimetric analysis. The pizzolanic activity of the RHA, fly ash and the silica fume was also compared according to the method of absorption of the solution of the active mineral additive. It is established that the duration of the mechanical activation of rice husk ash by grinding in a vibratory mill is optimal for increasing its pozzolanic activity, since it simultaneously results in the production of the most dispersed ash particles with the highest specific surface area and maximum solubility of the amorphous silica contained in it. Longer grinding does not lead to further reduction in the size of ash particles, which can be explained by their aggregation, and also reduces the solubility of amorphous silica in an aqueous alkaline medium.

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