Enhanced removal of Cr(VI) from aqueous solution by supported ZnO nanoparticles on biochar derived from waste water hyacinth

Yu, Jian; Jiang, Chunyan; Guan, Qingqing; Ning, Ping; Gu, Junjie; Chen, Qiuling; Zhang, Junmin; Miao, Rongrong

doi:10.1016/j.chemosphere.2017.12.128

Cited by 201 publications

(37 citation statements)

References 35 publications

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“…The sorption capacities were compared with several other lignocellulosic materials which implied the potential of long-root Eichhornia crassipes waste as an economic and excellent biosorbent for eliminating metal ions from contaminated waters. Furthermore, to enhance the adsorption capacity of biochar, literatures have shown the following chemical or physical modification of biochar: In a study by Yu et al (2018), biochar derived from waste water hyacinth was prepared and modified by ZnO nanoparticles for Cr(VI) removal from aqueous solution with the aim of Cr(VI) removal and management of waste biomass. The effect of carbonization temperature (500-800 °C), ZnO content (10-50 wt%) loaded on biochar and contact time (0.17-14 h) on the Cr(VI) removal were investigated.…”

Section: Preparing Biochar By Pyrolysismentioning

confidence: 99%

Water Hyacinth (Eichhornia Crassipes) as a Promising Biosorbent in Removal of Heavy Metals.

MonowaraJahangiri.¹

2019

IJAR

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Water hyacinth (Eichhornia crassipes) is a naturally abundant plant having substantial heavy metal adsorptive capacity. E. crassipes is considered to be a noxious weed in many parts of the world due to its proficiency to grow and depletion of nutrients and oxygen from water bodies. Nonetheless, several studies have shown E. crassipes as a candidate for the treatment of wastewater contaminated with heavy metals. The present review aims to compile in a single paper the numerous studies conducted on the use of water hyacinth species for the removal of heavy metals in solution. The methods include a binder material produced either from the roots, shoots, fibers, pellets, the whole biomass, biochar or activated carbon derived from the water hyacinth biomass, and involve a process of binding such as biosorption, pyrolysis, immobilization with micro algae, or modification with nanoparticles. The paper also specifies with each method the extent of removal of metal ions and discusses about a specific disposal method of the metal contaminated biomass. Regardless the ability to act as an invasive aquatic species, E. crassipes has a great potential to be used as an in situ cost effective biosorbent phytotechnology for the amelioration of contaminated wastewaters with heavy metals.

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Section: Preparing Biochar By Pyrolysismentioning

confidence: 99%

Water Hyacinth (Eichhornia Crassipes) as a Promising Biosorbent in Removal of Heavy Metals.

MonowaraJahangiri.¹

2019

IJAR

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“…Though the intra-particle diffusion curve gives not agree with the linear fitting and does not pass through the origin. This indicates that the intraparticle diffusion is involved in the adsorption process, but not in the rate-controlling step [36][37][38].…”

Section: Cobalt(ii) Ion Adsorption Kinetics Ontomentioning

confidence: 99%

Kinetic and Thermodynamic Sorption Study of Cobalt Removal From Water Solution With Magnetic Nano-Hydroxyapatite

Swelam

Salem

Aanym

et al. 2018

Al-Azhar Bulletin of Science

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In this study, Magnetite-hydroxyapatite nanocomposites were prepared by in situ precipitation of the calcium phosphate phase in an iron oxide colloidal suspension. Adsorption of cobalt was initially rapid and the adsorption process reached a steady state after 180 min. The Co(II) adsorption capability of the MHAp was investigated as a function of temperature, pH, ionic strength, adsorbent dosage, agitation speed and initial Co(II) concentration. Theincrease in pH and temperature resulted in an increase in Co(II) adsorption capacity; Increasing ionic strength increased the adsorption of Co(II) by MHAp; The adsorption isotherms were well described by the Freundlich model, Langmuir, Temkin and D-R models. The Freundlich model was found to provide the better fit with the experimental data. Different types of adsorption kinetic models were used to describe the Co (II) adsorption behaviour, and the experimental results fitted the pseudo-second-order kinetic models well. Thermodynamics parameters such as ∆H o , ∆S o , ∆G o revealed that the adsorption of Co(II) by MHAp was endothermic in nature, physisorption, spontaneous at 308 and 318K.

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“…One of the most important issues of Cr(VI) besides its high toxicity is related to the bioaccumulation property of the liver, it causes kidney syndromes, and it can be deadly at concentrations above 0.1 mg L -1 [6,7]. Previous works reported that the quantity of Cr(VI) in industrial effluents range from 0.5 to 270 000 mg L -1 [8].…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Forward Osmosis Process Using Aquaporin Membranes in Chromium Removal

et al. 2019

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Due to the lack of affordable and feasible wastewater treatment technologies, various industries in developing countries are discharging chromium (Cr) without meeting the environmental standards. Here, the aim was to employ forward osmosis (FO) using aquaporins (AQP)-based biomimetic membranes and optimize the Cr rejection through response surface methodology (RSM). The initial concentration of draw solution, feed solution, and time was selected as independent variables in order to optimize Cr rejection and water flux. A high Cr rejection efficiency and water flux were achieved under the optimal conditions. These results revealed that the FO process applying an AQP membrane beside the RSM could be considered to treat wastewaters containing heavy metals.

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Enhanced removal of Cr(VI) from aqueous solution by supported ZnO nanoparticles on biochar derived from waste water hyacinth

Cited by 201 publications

References 35 publications

Water Hyacinth (Eichhornia Crassipes) as a Promising Biosorbent in Removal of Heavy Metals.

Water Hyacinth (Eichhornia Crassipes) as a Promising Biosorbent in Removal of Heavy Metals.

Kinetic and Thermodynamic Sorption Study of Cobalt Removal From Water Solution With Magnetic Nano-Hydroxyapatite

Optimization of the Forward Osmosis Process Using Aquaporin Membranes in Chromium Removal

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