Rice Husk Derived Adsorbents for Water Purification

Shukla, Shipra

doi:10.1007/978-3-030-17724-9_6

Cited by 14 publications

(12 citation statements)

References 77 publications

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“…Once obtained, RHA and silica from RHA has been used and studied for various applications that includes adsorbents for adsorption of dyes, pigments (Lawagon and Amon, 2019;Shukla, 2020) and heavy metal ions (Maingi et al, 2019) from aqueous solutions; catalytic support and catalyst (Ikhlaq et al, 2019); for manufacturing solar cells for photovoltaic power generation and semiconductors (Zamani et al, 2019); in the cement industries as a pozzolone component (Sonat and Unluer, 2019) and fertilizer industries (Sekifuji et al, 2019); in synthesis of advanced materials such as silicon tetrachloride, magnesium silicide, sodium silicate and zeolite (as reported by Genieva et al, 2008); as fillers in rubber (Xue et al, 2019) and plastic (Almirón et al, 2019) composites, due to their low densities, very low cost, nonabrasiveness, high filling levels, recyclability, biodegradability and renewable nature among many others. The aim of the present study is to compare the properties of RHA prepared under controlled conditions that is FRHA with RHA obtained through uncontrolled burning ORHA.…”

Section: Introductionmentioning

confidence: 99%

Characterization of rice husk ash prepared by open air burning and furnace calcination

Jonathan¹,

Kamweru²,

Mwangi³

et al. 2020

J. Chem. Eng. Mater. Sci.

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Rice husk (RH) is an agricultural waste, and easily available in rice growing areas. The husk is mostly burnt as a way of getting rid of it. The ash obtained after burning or calcination may have economic application, mainly dependent on its properties. These properties in turn depend on the calcination method. However, for commercial viability, and for many applications, the calcination method should not only be as simple as possible but also cheap. This study characterized the elemental composition, crystallinity, functional bonds present and morphology of rice husk ash (RHA) obtained in two ways, that is, calcination of rice husks in a muffle furnace (FRHA) at a temperature of 700°C and open air burning (ORHA) at uncontrolled temperatures. The elemental composition done by Atomic Absorption Spectroscopy showed a high percentage of silicon that is 81.01 and 79.12% for ORHA and FRHA, respectively. X-ray fluorescence showed a high percentage of silica (SiO 2 ), 95.45 and 94.85% for ORHA and FRHA, respectively. X-ray diffractograms indicate that the FRHA was crystalline with the highest peak at 21.8°; while ORHA was amorphous in nature. Fourier Transform Infra-Red spectra confirmed the presence of -OH groups and O-Si-O bonds in the two types of ash. Scanning electron microscopy analysis showed agglomerated ORHA, which may be due to the presence of hydrogen bonding between silanol groups on the surface of rice husk ash for FRHA, and presence of -OH groups in ORHA. The study shows that ORHA is as good as FRHA in applications where crystallinity is optional.

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Section: Introductionmentioning

confidence: 99%

Characterization of rice husk ash prepared by open air burning and furnace calcination

Jonathan¹,

Kamweru²,

Mwangi³

et al. 2020

J. Chem. Eng. Mater. Sci.

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“…Agricultural waste also served as raw material for the production of biochar in multiple studies. Biochar is fine-grained charcoal, rich in inorganic carbon, and produced by the pyrolysis of naturally available biomass and plant wastes such as wood and fruit peels, in an oxygen-limited atmosphere [ 100 , 101 , 102 ]. Similarly to AC, the effectiveness of biochar as an adsorbent lies in its intrinsic physicochemical properties that hold a large surface area with a large pore size and volume, high stability, coupled with a high water-retaining capacity.…”

Section: Agro-waste Based Adsorbents For the Removal Of Ibuprofen And...mentioning

confidence: 99%

The use of agro-waste-based adsorbents as sustainable, renewable, and low-cost alternatives for the removal of ibuprofen and carbamazepine from water

Farah

2023

Heliyon

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“…Typically, the burnt rice husk either ends up in a landfill creating disposal issues or is sprinkled over the fields to enrich the soil. From the viewpoint of utilization, the burnt by-product is used in a number of applications ranging from fillers, refractory bricks [4], flame retardants, water purifiers, elimination of certain dies from water, derivation of graphene oxide [5], paper, semiconductor, coating for protecting steel, steel making process [6] etc. due to its porous and pozzolanic nature.…”

Section: Introductionmentioning

confidence: 99%

Rice husk ash utilization, composition and properties: A brief review

Ullal

Shivaramu²,

Aveen

2022

J Met Mater Miner

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Asian countries rely massively on rice to feed and sustain its massive population. For long the staple food has provided nourishment to the masses and the classes. Rice is grown in large quantities in Asian countries. A by-product of its cultivation is its husk. The husk of the rice grain is mainly utilized as a fuel for the boilers in the rice mills. The uncontrolled burnt rice husk referred to as rice husk ash consists majorly of silica. silica is used in a wide variety of commercial and industrial applications. Use of rice husk ash in various products serves to reduce the pollution caused by its pileup in localities especially close to the rice mills. More sustainable and an affordable source of Si would benefit the society rather than disposing rice husk ash in the fields and landfills. This brief review provides insights into the synthesis, applications, and properties of rice husk ash incorporated products either directly in the as received conditions or under modified conditions.

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Rice Husk Derived Adsorbents for Water Purification

Cited by 14 publications

References 77 publications

Characterization of rice husk ash prepared by open air burning and furnace calcination

Characterization of rice husk ash prepared by open air burning and furnace calcination

The use of agro-waste-based adsorbents as sustainable, renewable, and low-cost alternatives for the removal of ibuprofen and carbamazepine from water

Rice husk ash utilization, composition and properties: A brief review

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