Insights into the Adsorption of Heavy Metals from Wastewater using Diatomaceous Earth

Bello, Olugbenga Solomon; Adegoke, Kayode Adesina; Oyewole, Rhoda Oyeladun

doi:10.1080/01496395.2014.910223

Cited by 34 publications

(15 citation statements)

References 90 publications

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“…Natural fossil shell flour can be changed by treating it with hydrochloric acid to purify the silica surface. This helps to significantly mitigate the input of detrimental calcium, iron, aluminum, magnesium, and alkaline rudiments while dissolving little of the silica [21,31,32]. Table 3 shows the chemical characteristics of modified and natural FSF, obtained through X-ray fluorescence spectrometer.…”

Section: Physical and Chemical Characteristics Of Fsfmentioning

confidence: 99%

“…Table 3 shows the chemical characteristics of modified and natural FSF, obtained through X-ray fluorescence spectrometer. The composition reveals that silicon dioxide (SiO 2 ) is the major constituent while small amounts of iron oxide (Fe 2 O 3 ) and aluminum oxide (Al 2 O 3 ) are also present [32,33]. After modification, fossil shell flour can remove substances such as Lead (Pb 2+ ), Copper (Cu 2+ ), and other heavy metals optimally.…”

Section: Physical and Chemical Characteristics Of Fsfmentioning

confidence: 99%

“…These supplies originate from streams, canals, small wells, or water holes, which are also used for irrigation [82]. This water is often high in salt and toxic elements such as lead, copper, selenium, mercury, and arsenic [32]. They are hazardous to animal health and may cause physiological upset or render the animal products unsafe or unfit for human consumption, as well as possibly cause the death of the animal [83].…”

Section: Potentials Of Fossil Shell Flourmentioning

confidence: 99%

“…Sources of these toxins and salts are animal feces, birds, animal carcasses, intensive livestock industry runoff from bare paddocks, sewerage waste, veterinary antibiotics, herbicides, and pesticide residues [32]. Diatomite that has been modified with manganese-oxide is an active and good adsorbent for removing heavy metal ions such as, Pb 2+ , Cu 2+ , Cd 2+ Ni 2+ , and Hg 2+ [32]. The negative charges on the modified surface is an attribute that enhances adsorption performance.…”

Section: Potentials Of Fossil Shell Flourmentioning

confidence: 99%

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Fossil Shell Flour in Livestock Production: A Review

Ikusika

Mpendulo

Zindove

et al. 2019

Animals

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Fossil shell flour (FSF), also known as Diatomaceous earth, or diatomite, consists of amorphous silicates with important physical and chemical characteristics, including porosity and permeability, low density and thermal conductivity, tiny particle size, high surface area, solubility, hydrophobia, and absorption capabilities, which are molecular filter actors, substituting their integral cations without physical changes. The substance is nontoxic, cheap, and readily available in large quantity in many countries. Recently, FSF has been modified as additives for several uses. Recent studies have supported its use as animal growth promoter, vaccine adjuvant in livestock, water purifier, mycotoxin binder, inert dust applications in stored-pest management, pesticide, animal feed additive, as a natural source of silicon in livestock and as natural anthelmintic. Numerous advantages of FSF include its low-cost and availability, its nontoxic characteristics, and the fact that food grade diatomaceous earth is safe for human consumption. In this paper, we review the main uses of FSF in the livestock industry, with reference to similar works earlier published that elucidate their important roles.

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Section: Physical and Chemical Characteristics Of Fsfmentioning

confidence: 99%

Section: Physical and Chemical Characteristics Of Fsfmentioning

confidence: 99%

Section: Potentials Of Fossil Shell Flourmentioning

confidence: 99%

Section: Potentials Of Fossil Shell Flourmentioning

confidence: 99%

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Fossil Shell Flour in Livestock Production: A Review

Ikusika

Mpendulo

Zindove

et al. 2019

Animals

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“…Diatomite from Aktobe field of Kazakhstan can be used to remediate many environmental problems. It has a unique combination of physical and chemical properties (good absorption ability, chemical inertness and a large surface area) that makes it applicable as a sorbent for purification of water from heavy metals and ion exchange [1][2][3]4].…”

Section: Introductionmentioning

confidence: 99%

Acid Modification of Diatomite-Based Sorbents

Nurgain¹,

Нажипкызы²,

Zhaparova³

et al. 2020

Eurasian Chem. Tech. J.

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In this work, the effect of acid pre-treatment (hydrochloric acid, HCl) and calcination of diatomite, a silicon dioxide-material from natural sources, was studied with the aim to obtain diatomite-based sorbents with specific physicochemical properties. For this, acid pre-treatments with HCl at different calcination conditions, namely HCl concentration (0.5, 1 M) and calcination temperatures (from 600 to 900 °C) were studied. Morphological features different from those of natural diatomite were obtained. It has been found that treatment of diatomite with 0.5 M HCl at 800 °C showed a specific pore volume of 0.008 cm3/g, and a specific surface area of 19.26 m2/g, while the treatment of diatomite with 1.0 M HCl showed a specific pore volume of 0.011cm3/g, and a specific surface area of 25.57 m2/g. The performance of the acid pretreatment of diatomite for adsorption of Pb ions from water was also studied.

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A review of the use of rice husk silica as a sustainable alternative to traditional silica sources in various applications

Taiye,

Hafida,

Kong

et al. 2024

Env Prog and Sustain Energy

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Rice husk silica (RHS) has emerged as a sustainable alternative to traditional sources of silica in various applications, offering eco‐friendly attributes, cost‐effectiveness, and versatility. This review explores the potential of RHS as a substitute for conventional silica sources, highlighting its alignment with sustainable development objectives and its appeal to industries seeking environmental responsibility. Among the extraction methods, acid leaching is identified as yielding higher purity silica. In contrast, among the novel techniques, the hydrothermobaric process stands out for producing high purity and yielding nanosilica. Despite challenges like limited access to high‐quality rice husks and variations in silica content, RHS extraction methods show promising avenues for sustainable silica production, addressing waste management, and environmental concerns. Further development and optimization of extraction techniques are essential for widespread acceptance, with future research focusing on nanoparticle synthesis and incorporating green chemistry principles. This comprehensive review of RHS provides a valuable resource for researchers seeking to explore sustainable alternatives in their respective fields, aiming to foster adopting more sustainable practices and materials across various industries.

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Insights into the Adsorption of Heavy Metals from Wastewater using Diatomaceous Earth

Cited by 34 publications

References 90 publications

Fossil Shell Flour in Livestock Production: A Review

Fossil Shell Flour in Livestock Production: A Review

Acid Modification of Diatomite-Based Sorbents

A review of the use of rice husk silica as a sustainable alternative to traditional silica sources in various applications

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