Guidelines for the use and interpretation of adsorption isotherm models: A review

Journal of Hazardous Materials, Journal Year: 2020, Volume and Issue: 393, P. 122383 - 122383

Published: Feb. 29, 2020

Language: Английский

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Nanomaterials for the Removal of Heavy Metals from Wastewater

Nanomaterials, Journal Year: 2019, Volume and Issue: 9(3), P. 424 - 424

Published: March 12, 2019

Removal of contaminants in wastewater, such as heavy metals, has become a severe problem the world. Numerous technologies have been developed to deal with this problem. As an emerging technology, nanotechnology gaining increasing interest and many nanomaterials remove metals from polluted water, due their excellent features resulting nanometer effect. In work, novel nanomaterials, including carbon-based zero-valent metal, metal-oxide based nanocomposites, applications for removal metal ions wastewater were systematically reviewed. Their efficiency, limitations, advantages compared discussed. Furthermore, promising perspective environmental was also discussed potential directions future work suggested.

Language: Английский

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Factors Affecting Synthetic Dye Adsorption; Desorption Studies: A Review of Results from the Last Five Years (2017–2021)

Molecules, Journal Year: 2021, Volume and Issue: 26(17), P. 5419 - 5419

Published: Sept. 6, 2021

The primary, most obvious parameter indicating water quality is the color of water. Not only can it be aesthetically disturbing, but also an indicator contamination. Clean, high-quality a valuable, essential asset. Of available technologies for removing dyes, adsorption used method due to its ease use, cost-effectiveness, and high efficiency. process influenced by several parameters, which are basis all laboratories researching optimum conditions. main objective this review provide up-to-date information on studied influencing factors. effects initial dye concentration, pH, adsorbent dosage, particle size temperature illustrated through examples from last five years (2017-2021) research. Moreover, general trends drawn based these findings. removal time ranged 5 min 36 h (E = 100% was achieved within 5-60 min). In addition, nearly 80% efficiency with just 0.05 g adsorbent. It important reduce (with Φ decrease E 8-99%). Among dyes analyzed in paper, Methylene Blue, Congo Red, Malachite Green, Crystal Violet were frequently studied. Our conclusions previously published literature.

Language: Английский

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Adsorptive removal of organic dyes via porous materials for wastewater treatment in recent decades: A review on species, mechanisms and perspectives

Chemosphere, Journal Year: 2021, Volume and Issue: 293, P. 133464 - 133464

Published: Dec. 30, 2021

Language: Английский

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Recent advances in applications of low-cost adsorbents for the removal of heavy metals from water: A critical review

Separation and Purification Technology, Journal Year: 2021, Volume and Issue: 278, P. 119510 - 119510

Published: Aug. 21, 2021

Language: Английский

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Banana peel as a biosorbent for the decontamination of water pollutants. A review

Environmental Chemistry Letters, Journal Year: 2020, Volume and Issue: 18(4), P. 1085 - 1112

Published: April 6, 2020

Language: Английский

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Removal of heavy metals from wastewater using agricultural byproducts

Journal of Water Supply Research and Technology—AQUA, Journal Year: 2020, Volume and Issue: 69(2), P. 99 - 112

Published: Feb. 19, 2020

Abstract The use of agricultural waste to remove heavy metals from wastewater has attracted much attention due its economic advantages and high removal efficiency which is attributed different functional groups. sorption mechanism biomass can consist several steps including chemisorption, complexation, adsorption on surface, diffusion through pores, ion exchange. Heavy were removed in rates depending the adsorbent metal itself. For instance, coconut showed capacities 263 285 mg/g removing lead cadmium ions, respectively. Also, black oak bark adsorbed mercury an capacity 400 mg/g, while wheat brans for chromium was 310 mg/g. commonly calculated by Lagergren's first-order equation, Redlich Peterson model, Brunauer–Emmett–Teller (BET) model. However, Langmuir Freundlich models intensively used calculate amount a unit weight solid sorbents. This review article aims present recently available information utilizing materials removal. Here, we highlight increasing these their low cost, regeneration ability, efficiency, small chemical or biological sludge with possibility recovery.

Language: Английский

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Biomass-Based Adsorbents for Removal of Dyes From Wastewater: A Review

Frontiers in Environmental Science, Journal Year: 2021, Volume and Issue: 9

Published: Dec. 9, 2021

Dyes, especially azo dyes contained in wastewaters released from textile, pigment, and leather industries, are entering into natural waterbodies. This results environmental deterioration serious health damages (for example carcinogenicity mutagenesis) through food chains. Physiochemical, membrane processes, electrochemical technology, advanced oxidation reverse osmosis, ion exchange, electrodialysis, electrolysis, adsorption techniques commonly used conventional treatment technologies. However, the limitations of most these methods include generation toxic sludge, high operational maintenance costs. Thus, technological advancements use to remediate effluents. Adsorption using nonconventional biomass-based sorbents is greatest attractive alternatives because their low cost, sustainability, availability, eco-friendly. We present reviewed up-to-date publications on for dye removal. Conceptualization synthesizing state-of-the-art knowledge characteristics, experimental conditions were also discussed. The merits various biosorbents reflected. maximum capacities synthesized order biomass type (algae, agricultural, fungal, bacterial, activated carbon, yeast, others). Surface chemistry, pH, initial concentration, temperature, contact time, adsorbent dose as well ways preparations materials affect biosorption process. Based average capacity, those arranged prioritized. best fit isotherms Freundlich Langmuir models) basic operating parameters removal retrieved. Which adsorbents have greater potential based uptake nature, cost-effectiveness, bulk mono multilayer behavior was including desorption cycles preparation operation implementation this technology forwarded.

Language: Английский

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Recycling municipal, agricultural and industrial waste into energy, fertilizers, food and construction materials, and economic feasibility: a review

Environmental Chemistry Letters, Journal Year: 2023, Volume and Issue: 21(2), P. 765 - 801

Published: Jan. 7, 2023

Abstract The global amount of solid waste has dramatically increased as a result rapid population growth, accelerated urbanization, agricultural demand, and industrial development. world's is expected to reach 8.5 billion by 2030, while production will 2.59 tons. This deteriorate the already strained environment climate situation. Consequently, there an urgent need for methods recycle waste. Here, we review recent technologies treat waste, assess economic feasibility transforming into energy. We focus on municipal, agricultural, found that methane captured from landfilled-municipal in Delhi could supply 8–18 million houses with electricity generate 7140 gigawatt-hour, prospected potential 31,346 77,748 gigawatt-hour 2030 2060, respectively. Valorization food anaerobic digestion systems replace 61.46% natural gas 38.54% coal use United Kingdom, reduce land 1.8 hectares if provided animal feeds. also estimated levelized cost landfill waste-to-energy $0.04/kilowatt-hour $0.07/kilowatt-hour, payback time 0.73–1.86 years 1.17–2.37 years, Nonetheless, current treatment are still inefficient, particular treating containing over 60% water.

Language: Английский

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Adsorption of Dyes Using Poly(vinyl alcohol) (PVA) and PVA-Based Polymer Composite Adsorbents: A Review

Journal of Polymers and the Environment, Journal Year: 2020, Volume and Issue: 28(3), P. 775 - 793

Published: Feb. 5, 2020

Language: Английский

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