The Removal of Elemental Mercury by Potassium Permanganate-modified Rice Husk Ash Sorbents

Zhao, Peng; Guo, Xueyi; Chen, Zheng

doi:10.1080/15567031003735295

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…The XRD peaks of the crystalline KMnO 4 phase increased with increased KMnO 4 loading. An obvious crystalline KMnO 4 phase in the XRD patterns has been reported for amorphous SiO 2 . Using the impregnation method, these results confirmed the successful loading of KMnO 4 on the SC-ASA.…”

Section: Results and Discussionsupporting

confidence: 72%

Potassium Permanganate-Impregnated Amorphous Silica–Alumina Derived from Sugar Cane Bagasse Ash as an Ethylene Scavenger for Extending Shelf Life of Mango Fruits

Chanka,

Donphai,

Chareonpanich

et al. 2024

ACS Omega

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Ethylene, a plant hormone, is a gas that plays a crucial role in fruit ripening and senescence. In this work, a novel ethylene scavenger was prepared from amorphous silica–alumina derived from sugar cane bagasse ash (SC-ASA) and used to prolong the shelf life of mango fruits during storage. KMnO4 at 2, 4, or 6 wt %/w was loaded on SC-ASA using an impregnation method. The results showed that 4% w/w KMnO4 loaded on SC-ASA (4KM/SC-ASA) was superior for ethylene removal at an initial ethylene concentration of 400 μL L–1 for 120 min under ambient conditions (25–27 °C and 70–75% relative humidity), resulting in 100% ethylene removal. The kinetic study of ethylene removal showed that the adsorption data were best fitted with a pseudo-first-order kinetic model. The effects of 4KM/SC-ASA as sachets on the quality changes of the mango fruits were investigated, with the results showing that mango fruits packed in cardboard boxes with 4KM/SC-ASA had significantly delayed ripening, low levels of ethylene production, respiration, and weight loss, high fruit firmness, low total soluble solids, and high acidity compared to those of the control treatment. These findings should contribute to developing an ethylene scavenger to extend the shelf life of fruits, reduce the waste of the sugar and ethanol industries, and make it a valuable material.

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Section: Results and Discussionsupporting

confidence: 72%

Potassium Permanganate-Impregnated Amorphous Silica–Alumina Derived from Sugar Cane Bagasse Ash as an Ethylene Scavenger for Extending Shelf Life of Mango Fruits

Chanka,

Donphai,

Chareonpanich

et al. 2024

ACS Omega

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Removal of mercury by adsorption: a review

Yue

et al. 2015

Environ Sci Pollut Res

196

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Due to natural and production activities, mercury contamination has become one of the major environmental problems over the world. Mercury contamination is a serious threat to human health. Among the existing technologies available for mercury pollution control, the adsorption process can get excellent separation effects and has been further studied. This review is attempted to cover a wide range of adsorbents that were developed for the removal of mercury from the year 2011. Various adsorbents, including the latest adsorbents, are presented along with highlighting and discussing the key advancements on their preparation, modification technologies, and strategies. By comparing their adsorption capacities, it is evident from the literature survey that some adsorbents have shown excellent potential for the removal of mercury. However, there is still a need to develop novel, efficient adsorbents with low cost, high stability, and easy production and manufacture for practical utility.

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Removal of elemental mercury from simulated flue gas by a novel composite sulfurized activated carbon

Qiu

Zhai

Chen

et al. 2018

Energy Sources, Part A: Recovery, Utilization, and Environmenta

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The Removal of Elemental Mercury by Potassium Permanganate-modified Rice Husk Ash Sorbents

Cited by 3 publications

References 21 publications

Potassium Permanganate-Impregnated Amorphous Silica–Alumina Derived from Sugar Cane Bagasse Ash as an Ethylene Scavenger for Extending Shelf Life of Mango Fruits

Potassium Permanganate-Impregnated Amorphous Silica–Alumina Derived from Sugar Cane Bagasse Ash as an Ethylene Scavenger for Extending Shelf Life of Mango Fruits

Removal of mercury by adsorption: a review

Removal of elemental mercury from simulated flue gas by a novel composite sulfurized activated carbon

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