Adsorption of organic dyes from wastewater by metal-doped porous carbon materials

Xiao, Wen‐Jing; Jiang, Xingpeng; Liu, Xi; Zhang, Weiming; Garba, Zaharaddeen N.; Lawan, Ibrahim; Wang, Liwei; Yuan, Zhanhui

doi:10.1016/j.jclepro.2020.124773

Cited by 271 publications

(73 citation statements)

References 112 publications

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“…Numerous technologies, including biological degradation as well as chemical and physical methods, have been extensively studied to treat wastewater contaminated with dyes [ 7 , 8 , 9 , 10 , 11 , 12 ]. Adsorption is an attractive method for removing pollutants from effluents as it is a flexible process in terms of design and operation and produces pollutant-free effluents that are suitable for reuse [ 13 , 14 ]. The efficiency of the adsorption process depends on the characteristics of the solution medium, the adsorbate, and the adsorbent [ 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Structuring of ZnTiO3/TiO2 Adsorbents for the Removal of Methylene Blue, Using Zeolite Precursor Clays as Natural Additives

et al. 2021

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Adsorption is an effective method of removing harmful pollutants from air and water. In the present study, zeolites prepared by sol-gel method from two Ecuadorian clays were combined with precursor clays and the ZnTiO3/TiO2 semiconductor for adsorbing methylene blue (MB) as a water contaminant. The synthesized compounds were characterized using powder X-ray diffraction, X-ray fluorescence, scanning electron microscopy, energy dispersive X-ray, and surface area measurement. These compounds were combined to form cylindrical extrudates of 0.2 cm (diameter) and 1.0 cm (length). The adsorption characteristics of the composites were measured using batch sorption studies as a function of pH, initial concentration, and contact time. The pseudo-second-order model and the Langmuir isotherm model were better suited to the adsorption process. The equilibrium state was achieved around 180 min of adsorption, and a pH of 7 was established as the optimal operating condition. The maximum adsorption values of the dye were obtained with the composites derived from G-Clay, whose average adsorption capacity was 46.36 mg g−1, in contrast with composites derived from R-Clay, whose average adsorption value was 36.24 mg g−1. The results reflect that synthesized composites could be used potentially for the removal of cationic dye from wastewater.

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Section: Introductionmentioning

confidence: 99%

Structuring of ZnTiO3/TiO2 Adsorbents for the Removal of Methylene Blue, Using Zeolite Precursor Clays as Natural Additives

et al. 2021

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“…Varieties of pollutants from organic and inorganic substances contaminate the wastewater. Inadequate supply of contaminant-free water continues to be an environmental challenge bedeviling several countries [2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Risk assessment and the adsorptive removal of some pesticides from synthetic wastewater: a review

Garba

Abdullahi

Haruna

et al. 2021

Beni-Suef Univ J Basic Appl Sci

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Background The need for environmental protection and remediation processes has been an increasing global concern. Pesticides are used as biological agents, disinfectants, antimicrobials, and also in a mixture of some chemical substances. Their modes of application are through selective dispensing and attenuation processes which act upon any pest that compete with the production, processing, and storage of foods and also in agricultural commodes. The pests might comprise weeds, insects, birds, fish, and microbes. Main body Pesticides are commonly found in water surface, landfill leachate, ground water, and wastewater as pollutant. An overview of recently studied adsorption processes for the pesticide elimination from polluted water has been reported in this study utilizing activated carbon, clay materials, biomass materials, metal organic frame work, graphene, and carbon-based materials as well as agricultural wastes as adsorbents. The risk assessment and cost analysis of adsorbents were also provided. Conclusion Evidences from literature recommend modified adsorbent and composite materials to have a prospective use in pesticide removal from wastewater. The adsorption data obtained fitted into different isotherm and kinetic models and also the thermodynamic aspect have been discussed. Graphical abstract

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“…The importance of these adsorptive methodologies on the removal of organic dyes from waters is reflected in the number of investigations and reviews published along the years. Recently, several reviews about the use of a given type of adsorbents in this role, included silica-based mesoporous materials of the M41S and SBA-n families [1], different types of graphene-based materials [2,3], biochars [4], metal-organic frameworks (MOF) [5,6], various types of polymeric nanofibers [7], metal-doped porous carbon materials [8], and activated carbon fibers [9] The present work reviews very recent publications (first half of 2021 year) about the use of adsorbents in the removal of organic dyes from waters, in many cases, the investigations are carried out on synthetic solutions, but there are some examples in which adsorbents are used on real waters. Readers must be aware that this review does not include publications about desorption-degradation processing of these toxic chemicals.…”

Section: Introductionmentioning

confidence: 99%

Organic Dyes Versus Adsorption Processing

López

2021

Preprint

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Even in the first quarter of XXI century, the presence of organic dyes in wastewaters is a normal occurrence in a series of countries, and being these compounds toxics, their removal from these waters is of a necessity. Among the separation technologies, adsorption processing appeared as one of the most widely used to reach this goal. The present work reviewed the most recent approaches (first half of 2021 year) about the use of a variety of adsorbents on the removal of, also, a variety of organic dyes of different nature.

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Adsorption of organic dyes from wastewater by metal-doped porous carbon materials

Cited by 271 publications

References 112 publications

Structuring of ZnTiO3/TiO2 Adsorbents for the Removal of Methylene Blue, Using Zeolite Precursor Clays as Natural Additives

Structuring of ZnTiO3/TiO2 Adsorbents for the Removal of Methylene Blue, Using Zeolite Precursor Clays as Natural Additives

Risk assessment and the adsorptive removal of some pesticides from synthetic wastewater: a review

Organic Dyes Versus Adsorption Processing

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