Using biomass waste as an adsorbent to treat wastewater containing mercury ions was a better way due to its positive impacts on the environment and resource saving. In this research, activated carbon (AC) was prepared from rice husk (RH) by the KOH chemical activation method.

Jun 25, 2014 · The rice husk was modified accordingly via alkali treatment, sulfur-functionalization and organosilane-grafting methods to enhance its adsorption performance toward Hg(II) from aqueous solutions and synthetic produced water which has so far not been reported.

Jun 1, 2023 · Magnetic rice-straw-derived biochar (MRBC) was synthesized and characterized. The MRBC composites showed very high Hg (II) adsorption capacity. The Langmuir isotherm gave the best fit to experimental adsorption data. RSM was employed to determine the optimal conditions for enhanced Hg (II) removal.

Rice husk gasification char (RHGC) is an industrial waste of biomass gasification power generation, which is silver-loaded to develop a novel and efficient sorbent for mercury removal from simulated flue gas. The experiment was carried out in a fixed-bed experimental system.

Apr 15, 2018 · The present study was undertaken to provide a proof-of-concept for the ‘green’ remediation of Hg contaminated soils with rice husk biochar modified with non-toxic elemental S. It has been shown that the elemental S modification process successfully increased the biochar S content from 0.20% to 13.04% via surface deposition or volume pore ...

Mar 28, 2014 · The rice husk sorbent proved to be useful in decreasing Hg(II) contamination in river waters, by reducing the levels of Hg(II) to values of ca. 8.0 and 34 μg L−1, for an Hg(II) initial concentration of 50 and 500 μg L−1, respectively.

Oct 15, 2021 · Mercury (Hg) contaminated soil is a potential hazardous material especially under soil erosion and surface runoff. This work aims to use rice husk biochar to immobilize Hg and prevent erosion, and find the optimal production temperature and particle size of the biochar.

Jan 19, 1995 · Rice-husk ash (RHA) was found to be a good adsorbent for Hg (II) in aqueous solutions. Batch studies indicated that the percent adsorption decreased with increasing initial concentration of Hg (II) and particle size of adsorbent.

Dec 1, 2014 · The modified rice husks were characterized in terms of morphology (scanning electron microscopy), functional groups (Fourier transform infrared spectroscopy), surface charge (pHpzc), and...

Nov 4, 2020 · Using biomass waste as an adsorbent to treat wastewater containing mercury ions was a better way due to its positive impacts on the environment and resource saving. In this research, activated carbon (AC) was prepared from rice husk (RH) by the KOH chemical activation method.