Enhanced removal of Cd(II) from water using sulfur-functionalized rice husk: Characterization, adsorptive performance and mechanism exploration

Qu, Jianhua; Meng, Xianglong; Jiang, Xingying; You, Hong; Wang, Peng; Ye, Xiuqing

doi:10.1016/j.jclepro.2018.02.208

Cited by 68 publications

(15 citation statements)

References 24 publications

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“…Furthermore, Qu et al (2018) synthesized a novel bio-sorbent, from rice husk, for the removal of Cd 2+ from WW by grafting sulfur-bearing groups onto rice husk with magnesium xanthate. The Cd 2+ maximum adsorption capacity of activated rice husk was found to be 137 mg g −1 , a significant value, due to the high-density sulfur-bearing groups on the functionalized rice husk surface (Qu et al, 2018).…”

Section: Physical Propertiesmentioning

confidence: 98%

“…In recent years several authors have investigated the application of this alternative adsorbent, after an activation process, in removal of pollutants from WW (Fu et al, 2019;Mor et al, 2016;Satayeva et al, 2018). The main advantages of using rice residues are: (a) low cost (Mo et al, 2018), (b) high availability of the materials, and (iii) high efficiency in the regeneration processes (Qu et al, 2018). For instance, Acharya et al (2019) tested chemically pre-treated sodium carbonate-treated rice husk for removing copper ions from aqueous solutions.…”

Section: Physical Propertiesmentioning

confidence: 99%

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Valorization of agro-industry residues in the building and environmental sector: A review

et al. 2020

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Environmental pollution has become a relevant issue as the population rises and resources decrease. Reuse and recycling still have the greatest potential as they turn the waste into a new resource, representing the ‘closed-loop’ step of a circular economy (CE). Looking for new applications for agro-industry waste represents both an environmental issue, as its incorrect disposal is a cause of pollution, and a chance to exploit zero-cost natural wastes. The present review, with around 200 articles examined, focuses on possible reuses of these residues in (a) building construction, as additives to produce thermal and acoustic insulation panels, and (b) in water treatments, exploited for removal of pollutants. The selected materials (coconut, coffee, corn, cotton and rice) have industry production wastes with suitable applications in both sectors and huge worldwide availability; their reuse may thus represent a new resource, with an impact based on the production rate and the possible replacement of current inorganic materials. Along with possible implementation of the selected materials in the building industry and environmental engineering, a brief description of the production and supply chain are provided.

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Section: Physical Propertiesmentioning

confidence: 98%

Section: Physical Propertiesmentioning

confidence: 99%

Valorization of agro-industry residues in the building and environmental sector: A review

et al. 2020

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“…The use of this residual material would improve the sustainability of this agricultural activity and help to reduce its effect. Rice husk (RH) has been used in different applications: as a fuel due to its calorific value [17], as a source of silica and silicon due to the high content of SiO 2 [18][19][20][21][22], for the preparation of activated carbon [23], in construction materials [24,25], and as a biosorbent in water treatment [26][27][28], among others. In the latter case, after the retention of the contaminants on the husk, a biomass-contaminant residue is generated, which nowadays does not have viable and low-cost alternatives for final disposal.…”

Section: Introductionmentioning

confidence: 99%

Ceramic matrices for immobilization of heavy metals adsorbed on rice husk

et al. 2020

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Numerous studies have been conducted about the removal of heavy metal ions from aqueous solutions using lignocellulosic materials, which are capable of adsorbing various contaminants present even at low concentrations. Rice husk constitutes biomass waste that has found multiple applications in different fields, such as the removal of heavy metals by adsorption. After this process, a biomass-contaminant waste is generated, which currently does not have viable and low-cost alternatives for its final disposal. Thus, the objective of this work is to evaluate the possibility of incorporating rice husk contaminated with Cu-Ni-Cd and Pb-Zn into ceramic matrices, to immobilize these hazardous metals. Ceramic pieces from mixtures of commercial clay and rice husk with adsorbed metal, added by 10% in volume were obtained. The raw materials were characterized by different techniques, such as SEM-EDS, XRD, DTA-TGA, particle size distribution, ecotoxicity, etc., while in ceramic products were analysed porosity, permanent volumetric variation, weight loss of ignition, ecotoxicity, among others. From the overall results, it is possible to conclude that the obtained ceramic pieces have immobilized within their structure, the heavy metals present on rice husk. The bricks have excellent physical and mechanical properties that make possible their use in civil construction.

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“…Hay muchos adsorbentes eficientes para la remoción de metales pesados, materiales naturales como el quitosano (Zhang et al, 2016), arcillas (Ghorbel-Abid y Trabelsi-Ayadi, 2015), zeolitas (Qiu et al, 2018), carbones activados (Aguayo-Villarreal et al, 2017). Respecto a los anteriores se destacan los residuos agrícolas, tales como cáscaras de yuca (Xie et al, 2017), papa (Asuquo y Martin, 2016), naranja (Guiza, 2017), cascarilla de arroz (Qu et al, 2018), entre otros, ya que son de bajo costo además de ser ideales como adsorbentes porque presentan propiedades de gran superficie, alta capacidad de adsorción, estabilidad mecánica, compatibilidad, fácil acceso, facilidad de regeneración, rentabilidad, bajo costo, procedimientos simples y altamente selectivos (Zhang et al, 2016). En el presente trabajo, se propone el uso de los residuos de la pulpa de almidón de ñame y de plátano, y bagazo de palma, como adsorbentes de Cr (VI) y Ni (II) en una columna de lecho empacado.…”

Section: Introductionunclassified

Estudio Termodinámico de la Remoción de Níquel y Cromo en Solución Acuosa usando Adsorbentes de Origen Agroindustrial

et al. 2019

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El objetivo del presente trabajo fue estudiar el proceso de adsorción en una columna de lecho empacado usando bio-adsorbentes obtenidos de subproductos agroindustriales (pulpa de almidón de plátano, pulpa de almidón de ñame y bagazo de palma aceitera) para la eliminación de Cr (VI) y Ni (II) en solución acuosa. Se analizó el efecto e incidencia estadística sobre los cambios en la temperatura y altura del lecho en el proceso de adsorción de los metales pesados en una columna empacada con las biomasas en estudio, la concentración de los metales se fijó en 100 ppm y el caudal en 0,75 mL/s. A partir de las pruebas de adsorción hechas a las condiciones estudiadas y el análisis estadístico de las mismas se determinó que la temperatura y la altura del lecho afectan significativamente la adsorción de Cr (VI) en la torta de plátano, y la altura del lecho afecta la adsorción de Ni (II) en la torta de ñame y bagazo de palma.

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Enhanced removal of Cd(II) from water using sulfur-functionalized rice husk: Characterization, adsorptive performance and mechanism exploration

Cited by 68 publications

References 24 publications

Valorization of agro-industry residues in the building and environmental sector: A review

Valorization of agro-industry residues in the building and environmental sector: A review

Ceramic matrices for immobilization of heavy metals adsorbed on rice husk

Estudio Termodinámico de la Remoción de Níquel y Cromo en Solución Acuosa usando Adsorbentes de Origen Agroindustrial

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