A comparative study on rice husk and rice straw as bioresources for production of carbonaceous adsorbent and silica

Motlagh, Eisa Khoshnood; Asasian‐Kolur, Neda; Sharifian, Seyedmehdi

doi:10.1007/s13399-020-01145-7

Cited by 22 publications

(10 citation statements)

References 39 publications

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“…These complex compounds are not easily degradable and, therefore, take longer for degradation by microorganisms ( Kumar et al, 2020 ). Similarly, the high silica content of coconut husk, rice husk, and rice straw also slows down the growth of microorganisms, ultimately slowing down their degradation rate ( Anuar et al, 2018 ; Motlagh et al, 2020 ). The high silica content in rice husk, rice straw, and coconut husk are also responsible for antioxidative properties inhibiting the oxidation process ( Kim et al, 2012 ).…”

Section: Resultsmentioning

confidence: 99%

A Modified Lysimeter Study for Phyto-Treatment of Moderately Saline Wastewater Using Plant-Derived Filter Bedding Materials

et al. 2021

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The present study focuses on determining the phyto-treatment efficiency for treatment of moderately saline wastewater using organic raw materials, such as rice husk, coconut husk, rice straw, and charcoal. The moderately saline wastewater with total dissolved solids (TDS) concentration up to 6143.33 ± 5.77 mg/L was applied to the lysimeters at the rate of 200 m3 ha–1 day–1 in five different lysimeter treatments planted with Eucalyptus camaldulensis (T1, T2, T3, T4, and T5). T1 was a control without any filter bedding material, whereas rice straw, rice husk, coconut husk, and charcoal were used as filter bedding materials in the T2, T3, T4, and T5 treatment systems, respectively. Each treatment showed significant treatment efficiency wherein T3 had the highest removal efficiency of 76.21% followed by T4 (67.57%), T5 (65.18%), T2 (46.46%), and T1 (45.5%). T3 and T4 also showed higher salt accumulation, such as sodium (Na) and potassium (K). Further, the pollution load in terms of TDS and chemical and biological oxygen demand significantly reduced from leachate in the T3 and T4 treatments in comparison with other treatments. Parameters of the soil, such as electrical conductivity, exchangeable sodium percentage, and cation exchange capacity did not show values corresponding to high salinity or sodic soils, and therefore, no adverse impact on soil was observed in the present study. Also, Eucalyptus camaldulensis plant species showed good response to wastewater treatment in terms of growth parameters, such as root/shoot weight and nitrogen, phosphorus, and potassium (NPK) uptake, plant height, biomass, and chlorophyll content. Root and shoot dry weight were in the order T3 (51.2 and 44.6 g)>T4 (49.3 and 43.5 g) > T5 (47.6 and 40.5 g) > T2 (46.9 and 38.2 g) > T1 (45.6 and 37.1 g). Likewise, the total chlorophyll content was highest in T3 (12.6 μg/g) followed by T4 (12.3 μg/g), T5 (11.9 μg/g), T2 (11.5 μg/g), and the control, that is, T1 (11.0 μg/g). However, the most promising results were obtained for T3 and T4 treatments in comparison with the control (T1), which implies that, among all organic raw materials, coconut and rice husks showed the highest potential for salt accumulation and thereby wastewater treatment. Conclusively, the findings of the study suggest that organic raw material–based amendments are useful in managing the high salts levels in both plants and leachates.

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Section: Resultsmentioning

confidence: 99%

A Modified Lysimeter Study for Phyto-Treatment of Moderately Saline Wastewater Using Plant-Derived Filter Bedding Materials

et al. 2021

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“…The separated solid was rewashed several times with HCl (1 M) and distilled water to achieve RSAC. Subsequently, RSAC was oven‐dried at 120°C for 12 h and crushed to achieve a powdered form with uniform particle size (325 US mesh, <45 μm) 17,18 . Rice straw has relatively low fixed carbon and consists of a considerable amount of volatiles and other impurities such as silica.…”

Section: Methodsmentioning

confidence: 99%

“…The yield of conversion of rice straw to activated carbon (by chemical activation with K 2 CO 3 ) was relatively low, about 9%; however, the yield of conversion of rice straw biochar into activated carbon is higher (about 25%). 17…”

Section: Activated Carbon Productionmentioning

confidence: 99%

“…Rice plant wastes, including rice husk and rice straw, are two types of biomass wastes abundant in most parts of the world. Several previous studies have investigated the conversion of rice plant waste into activated carbon, 17–19 and the use of the resulting activated carbon as an adsorbent has been the target of many other studies 20,21 …”

Section: Introductionmentioning

confidence: 99%

“…Several previous studies have investigated the conversion of rice plant waste into activated carbon, [17][18][19] and the use of the resulting activated carbon as an adsorbent has been the target of many other studies. 20,21 Thus, the main objective of the present work is to prepare and characterize a rice straw-based activated carbon for the adsorption of GMF from aqueous systems.…”

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confidence: 99%

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Gemifloxacin removal from aqueous solution by rice‐straw based activated carbon: Batch adsorption and thermal regeneration

Najafi

Sharifian

Asasian‐Kolur

2022

Env Prog and Sustain Energy

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Due to the worldwide concern about emerging contaminants in aqueous systems, the main objective of the present study is the adsorption of gemifloxacin (GMF), a fluoroquinolone-type antibiotic, by rice straw-based activated carbon. The rice straw chemically activated with K 2 CO 3 (RSAC) had very high carbon content (>80%) and low silica content (due to the extraction step after activation), high specific surface area (1668 m 2 /g), and oxygenated functional groups. The GMF adsorption capacity of RSAC was relatively dependent on the initial pH of the solution and highly dependent on the adsorbent dose. The pseudo-second order model and the BET isotherm models were the best models for predicting adsorption's kinetic and equilibrium behaviors. The maximum monolayer adsorption capacities of RSAC at 25, 35, and 45 C were 565.6, 552.4, and 525.8 mg/g, respectively. The thermodynamic parameters indicated a spontaneous and exothermic character of the GMF adsorption process. n-π, π-π, electrostatic interactions, and hydrogen bonding were demonstrated as probable mechanisms involved. Thermal regeneration of GMF-saturated RSAC at 550 C resulted in perfect adsorbent regeneration in the second cycle and reasonable performance in the third cycle.

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Grinding of Biogenic Silica

Andreev,

Bezmenov,

Zakharov

2024

Glass Ceram

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A comparative study on rice husk and rice straw as bioresources for production of carbonaceous adsorbent and silica

Cited by 22 publications

References 39 publications

A Modified Lysimeter Study for Phyto-Treatment of Moderately Saline Wastewater Using Plant-Derived Filter Bedding Materials

A Modified Lysimeter Study for Phyto-Treatment of Moderately Saline Wastewater Using Plant-Derived Filter Bedding Materials

Gemifloxacin removal from aqueous solution by rice‐straw based activated carbon: Batch adsorption and thermal regeneration

Grinding of Biogenic Silica

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