Study on the preparation of orange peel cellulose adsorbents and biosorption of Cd2+ from aqueous solution

Li, Xiaomin; Tang, Yanru; Xuan, Zhexian; Liu, Yinghui; Luo, Fang

doi:10.1016/j.seppur.2006.10.025

Cited by 139 publications

(58 citation statements)

References 28 publications

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“…The ability of fruit waste of orange to remediate Zn, Ni, Cu, Pb and Cr from aqueous solution by absorption was examined [35]. The absorption was in the order of Ni(II)>Cu(II)>Pb(II)>Zn(II)>Cr(II).…”

Section: Bio-waste Materials As Adsorbent Of Contaminate From Waste Wmentioning

confidence: 99%

Applications of Bio-waste Materials as Green Synthesis of Nanoparticles and Water Purification

Ali¹

2017

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Towards the future of green, sustainable and renewable products the suggestion of using the agriculture biomass in the coming decades got increased. Biomass material is one of the important sources of alternative material for the production of biocomposite products. An increasing global awareness about environmental issues is acting as the driving force behind the utilization of biomass material as valuable products. Bio-waste materials (agricultural waste) have been recognized as an ecological burden for the society they stimulated new gateways for the production of renewable, low cost and sustainable adsorbents for water treatment applications. In the area of water purification, nanotechnology offers the possibility of an efficient removal of pollutants and bacteria. Adsorption has proved that it is the best process of water treatment technologies, because of its significant advantages. Different modification methods of waste-based adsorbents, have also been presented to highlight and discuss the key advancements on the preparation of novel adsorbents using agricultural "agro-waste". Adsorption mechanisms responsible for pollutants removal by waste-based adsorbents have also been discussed. It also focuses on the computational aspects of binding of biomolecules to nanoparticles (NPs) and some of the applications of the biosynthesized NPs as water purification. The nature acts like a large ''bio-laboratory" comprising of plants, algae, fungi, yeast, etc. which are composed of biomolecules. These naturally occurring biomolecules have been identified to play an active role in the formation of nanoparticles with distinct shapes and sizes thereby acting as a driving force for the designing of greener, safe and environmentally benign protocols for the synthesis of NPs. The biosynthesis of NPs using waste materials will help researchers not only to design safer nanomaterials but also to promote the understanding of health and safety considerations of NPs. Useful materials can be produced easily even at reasonable scale because the biomaterial based routes eliminate the need to use toxic chemicals. The aim of this review is to summarize the adsorption capacities for organic and inorganic pollutants by different bio-waste-based adsorbents.

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Section: Bio-waste Materials As Adsorbent Of Contaminate From Waste Wmentioning

confidence: 99%

Applications of Bio-waste Materials as Green Synthesis of Nanoparticles and Water Purification

Ali¹

2017

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“…Muitos estudos vêm sendo conduzidos com a casca e o mesocarpo de diferentes frutos, como a laranja (LI et al, 2007), o limão (HUSOON; AL-AZZAWI; AL-HIYALY, 2013), banana (WAN NGAH;HANAFIAH, 2008), maracujá (CHAO; CHANG; NIEVA, 2014), fibra de coco verde (SILVA et al, 2013), melancia (LAKSHMIPATHY; SARADA, 2013), maçã (CHAND; BAFANA; PAKADE, 2015), entre outros. A grande ênfase dada à casca da laranja se deve à grande produção e consumo mundial deste fruto, mas que, lamentavelmente, gera um grande acúmulo de lixo orgânico formado, principalmente, pelas cascas.…”

Section: Mecanismos De (Bio)adsorçãounclassified

“…Os resultados mostraram que a adsorção foi mais eficiente em pH 6,0 para os resíduos que foram modificados com o ácido cítrico (0,6 mol L -1 ), sob temperatura de 80°C (LI et al, 2007 Sen et al (2015) em relação ao efeito do pH, na qual, para um valor de pH 2,0, houve repulsão eletrostática entre a superfície do biossorvente e o íon metálico, em consequência do excesso de íons H + , e à medida que o pH do sistema aumentou, observou-se um favorecimento à adsorção dos metais, que se deu devido a atração eletrostática, sendo que a maior adsorção ocorreu em pH 5,0. Além disso, com o aumento do pH ocorre um decréscimo de solubilidade dos complexos metálicos e, como além da atração do adsorvato pela superfície do sólido necessita-se que haja um comportamento liofóbico (a sorção aumenta com o decréscimo da solubilidade) para a maioria dos metais, isto significa que a adsorção aumenta com o aumento do pH (SILVA et al, 2014).…”

Section: Estudos De Casounclassified

Potencial da casca da laranja como biossorvente alternativo para remoção de metais pesados em águas residuais

Souza¹,

Alves²,

Oliveira³

et al. 2015

Anais Do 5º Encontro Regional De Química &Amp; 4º Encontro Nacional De Química

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“…Memon et al (2007) used treated and untreated sawdust to achieve about 97% of Cd(II) removal within 8 min of contact. Agricultural wastes such as orange peels (Li et al 2007), banana peels (Annadurai et al 2003), mango peels (Iqbal et al 2009), hazelnut shells (Cimino et al 2000), peanut shells (Brown et al 2000), rice husk, rice straw and rice bran (Ajmal et al 2003;Singh and Das 2012), and neem leaf (Sharma and Bhattacharya 2005;Singh and Das 2012) have been employed successfully to remove heavy metals from wastewater. Crini (2006) outlined a number of other waste materials that have been effectively used as adsorbents and their relative performances in dye removal.…”

Section: Introductionmentioning

confidence: 99%

Physicochemical Conditions for Adsorption of Lead from Water by Rice Husk Ash

Nnaji¹,

Ebeagwu²,

Ugwu³

2016

BioResources

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The effects of physico-chemical parameters such as pH, temperature, and lead concentration on the efficiency of lead adsorption by rice husk ash were determined. Rice husk was incinerated at 800 °C for 6 h and then activated with 0.5 M HCl. Rice husk and rice husk ash (RHA) were characterized using scanning electron microscopy and X-ray fluorescence. Batch adsorption tests were conducted at different pH, temperature, and initial lead concentration. Kinetic studies were conducted at optimum pH of 3.0. The optimum lead removal of 80% was recorded at pH 3.0. Efficiency of lead removal by RHA decreased to 45% as pH increased to 9.0. Freundlich, Langmuir, Temkin, and Dubinin Radushkevich (D-R) isotherms performed acceptably well, with R 2 values of 0.954≤R 2 ≤0.991, 0.965≤R 2 ≤0.996, 0.949≤R 2 ≤0.979, and 0.970≤R 2 ≤0.997, respectively. Lead removal efficiency decreased from 75% to 50% as temperature increased from 30 °C to 40 °C. The adsorption of lead by RHA was by ion exchange in the acidic pH range and by physisorption in the alkaline pH range. Thermodynamic studies revealed that the process was exothermic and spontaneous and further confirmed the feasibility of the process with -22.34≤∆G 0 ≤-24.94. The intraparticle diffusion model and the pseudo first order kinetic model fit the experimental data very well, with average R 2 values of 0.985 and 0.987, respectively.

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Study on the preparation of orange peel cellulose adsorbents and biosorption of Cd2+ from aqueous solution

Cited by 139 publications

References 28 publications

Applications of Bio-waste Materials as Green Synthesis of Nanoparticles and Water Purification

Applications of Bio-waste Materials as Green Synthesis of Nanoparticles and Water Purification

Potencial da casca da laranja como biossorvente alternativo para remoção de metais pesados em águas residuais

Physicochemical Conditions for Adsorption of Lead from Water by Rice Husk Ash

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