Results 181 to 190 of about 745,781 (246)

An integrated approach of rice hull biochar-alternative water management as a promising tool to decrease inorganic arsenic levels and to sustain essential element contents in rice.

Journal of Hazardous Materials, 2020
Arsenic (As) in rice agroecosystems causes a loss of both rice yield and quality of rice grains. In this study, an integrated approach of biochar (BC) and alternative water management is proposed to reduce As content while sustaining essential elemental ...
Prasanna Kumarathilaka, J. Bundschuh, S. Seneweera, Y. Ok   +3 more
semanticscholar   +1 more source

Gasification of rice hulls

Biomass and Bioenergy, 1992
Abstract The behaviour of a downdraft gasifier of 30 cm diameter and 140 cm height using rice hulls as a fuel, has been tested. Feeding rates of 1.3–5.1 kg hulls h −1 and air flow-rates of 2–4.44 m 3 h −1 , which corresponds to 26–55% of the stoichiometric amount needed for complete combustion, were used.
E.M.H. Khater, N.N. El-Ibiary, I.A. Ki-Iattab, M.A. Hamad   +3 more
openaire   +1 more source

Mitigation of mercury accumulation in rice using rice hull-derived biochar as soil amendment: A field investigation.

Journal of Hazardous Materials, 2019
Effect of application of 24 t ha-1 and 72 t ha-1 rice hull-derived biochar (RHB) on total Hg (THg) and methylHg (MeHg) immobilization and their accumulations by rice plants were studied in a field experiment (Wanshan Hg mine, China).
Ying Xing, Jianxu Wang, S. Shaheen, Xinbin Feng, Zhuo Chen, Hua Zhang, J. Rinklebe   +6 more
semanticscholar   +1 more source

Structure of the arabinoxylan of rice hull

Carbohydrate Research, 1983
Abstract Successive extraction of rice hull with hot water, 0.5% ammonium oxalate, 4% potassium hydroxide, and 24% potassium hydroxide, followed by neutralization of the alkaline extracts, yielded seven polysaccharide fractions. An electrophoretically homogeneous arabinoxylan was obtained as a precipitate (HC-IA) after neutralization of the 4 ...
Toshiyuki Watanabe, Mariko Shida, Yoshihiro Furuyama, Ken-ichi Tsukamoto, Tasuku Nakajima, Kazuo Matsuda, Keiji Kainuma   +6 more
openaire   +1 more source

Thermogravimetric kinetic modelling of in-situ catalytic pyrolytic conversion of rice husk to bioenergy using rice hull ash catalyst.

Bioresource Technology, 2018
The thermal degradation behaviour and kinetic parameter of non-catalytic and catalytic pyrolysis of rice husk (RH) using rice hull ash (RHA) as catalyst were investigated using thermogravimetric analysis at four different heating rates of 10, 20, 50 and ...
A. Loy, D. Gan, S. Yusup, B. L. F. Chin, M. Lam, Muhammad Shahbaz, P. Unrean, M. Acda, E. Rianawati   +8 more
semanticscholar   +1 more source

Properties of fraction of rice hull

Phytochemistry, 1987
Abstract Hulls from waxy (IR29)and non-waxy (IR32) rice had similar compositions. The neutral sugars were mainly glucose and xylose. The major fractions were cellulose and alkali-soluble polysaccharides. Whole hull and its soluble fractions, but not the residue fraction, hardened waxy rice starch gel.
Bienvenido O. Juliano, Clodualdo C. Maniñgat, Cynthia G. Pascual   +2 more
openaire   +1 more source

Evaluation of Calcium Silicate, Rice Hull and Rice Hull Ash as Silicon Sources in Wetland Rice on Acidic and Alkaline Soils

Journal of the Indian Society of Soil Science, 2017
Sandhya Thoppil Sreenivasan, N.B. Prakash   +1 more
openaire   +2 more sources

Chemical profiles and antioxidant properties of roasted rice hull extracts in bulk oil and oil-in-water emulsion.

Food Chemistry, 2019
We conducted in vitro assays to investigate the antioxidant properties of aqueous or ethanolic extracts of roasted rice hulls. Phenolic compound contents were analyzed via HPLC, and comprehensive chemical profiles were obtained via 1H NMR and 1H-H COSY ...
Juhyuk Park, S. Y. Gim, J. Jeon, Mi-Ja Kim, Hyung-Kyoon Choi, Jaehwan Lee   +5 more
semanticscholar   +1 more source

Kinetics and thermodynamic analysis in one-pot pyrolysis of rice hull using renewable calcium oxide based catalysts.

Bioresource Technology, 2018
Thermodynamic and kinetic parameters of catalytic pyrolysis of rice hull (RH) pyrolysis using two different types of renewable catalysts namely natural limestone (LS) and eggshells (ES) using thermogravimetric analysis (TG) approach at different heating ...
D. Gan, A. Loy, B. L. F. Chin, S. Yusup, P. Unrean, E. Rianawati, M. Acda   +6 more
semanticscholar   +1 more source

Characterization of rice hull ash

Journal of Applied Polymer Science, 2004
AbstractRice hulls, a byproduct of the rice industry, contain 60–90% silica and are unique within nature. The annual worldwide output of rice‐hull‐derived silica is more than 3.2 million tons, which poses environmental concerns because of disposal issues.
D. S. Chaudhary, M. C. Jollands
openaire   +1 more source