Heavy metals uptake on Malpighia emarginata D.C. seed fiber microparticles: Physicochemical characterization, modeling and application in landfill leachate

Souza, Wallas D.M.; Rodrigues, Waldiléia S.; Filho, Manoel M.S. Lima; Alves, Janete Jane Fernandes; Oliveira, Thiago M.B.F.

doi:10.1016/j.wasman.2018.06.004

Cited by 27 publications

(11 citation statements)

References 37 publications

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“…Among all the compounds present in leachates, heavy metals can have the most significant adverse impacts on the environment, and decisions regarding the implementation of treatment alternatives often depend on their concentrations (Souza, Rodrigues, Lima Filho, Alves, & Oliveira, 2018). However, the heavy metal contents in this study were found to be low when compared to leachate from other landfills (Ribeiro, Buss, & Santos Menezes, 2015).…”

Section: Resultsmentioning

confidence: 99%

Characterization of leachate produced by a landfill and its influence on a sewage treatment plant

Destro

Braga

Tadayozzi

et al. 2020

Environmental Quality Mgmt

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Although landfills are generally an environmentally safe option for the disposal of solid waste, the treatment and management of landfill leachate are still critical. The aim of this work was to study through physical-chemical analyses the effects of leachate on the effluent of the sewage treatment plant to which it is disposed on both study sites. The results were compared with those of existing studies, current legislation, municipal waste management practices, and landfill operations. Ethinylestradiol analyses were also performed on the influent and effluent from the sewage treatment plant. The results showed that the landfill leachate has a polluting potential, being found parameters above the allowed value, such as chemical oxygen demand (3,510.33 mg L −1), chloride (3,631.78 mg L −1), and manganese (21.61 mg L −1). The properties of the leachate indicated that the landfill was still in the acid formation phase and did not influence the influent that reached the sewage treatment plant in any way. Ultimately, the quality of the discharged wastewater met all of the predischarge regulatory criteria for materials being sent to a receiving water body, except for the chloride parameter that is not being treated at all.

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Section: Resultsmentioning

confidence: 99%

Characterization of leachate produced by a landfill and its influence on a sewage treatment plant

Destro

Braga

Tadayozzi

et al. 2020

Environmental Quality Mgmt

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“…Different kinds of adsorption isotherm models have been developed to explicate different isotherm adsorption behavior. In this study, four well-known isothermal adsorption models were served to fit the equilibrium data, namely, Langmuir (Figure 8 e Langmuir model is applied successfully in many monolayer adsorption processes [43,44].…”

Section: Adsorption Isothermsmentioning

confidence: 99%

K2CO3-Activated Pomelo Peels as a High-Performance Adsorbent for Removal of Cu(II): Preparation, Characterization, and Adsorption Studies

Liu

Wei

2021

Journal of Chemistry

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Activated carbons (ACs) were prepared from pomelo peels by K2CO3 activation and used as an adsorbent (PAC) for the removal of Cu(II) from aqueous solutions. BET, SEM, and FT-IR were employed for the characterization of the obtained ACs. The optimum ACs were reported at activation temperature of 850°C, activation time of 60 min, and impregnation ratio of 3, which had a high surface area (1213 m2/g) and total pore volume (0.57 cm3/g). The resulting ACs were used for the adsorption of Cu(II) from aqueous solutions in the batch mode and yielded a superior adsorption capacity of 139.08 mg/g. The pH of optimum adsorption was determined as 5. Pseudo first-order model, pseudo second-order model, and intraparticle diffusion model were applied to describe the adsorption processes. The adsorption kinetic data were found to follow the pseudo second-order model. The adsorption isotherms data were analyzed using Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich models. The Langmuir model was found to provide the best fit, and the calculated adsorption capacity was 151.35 mg/g.

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“…After 90 minutes, the adsorption layer became saturated. The driving force between the adsorbent and metal ions maximized the mass transfer (Souza et al 2018). The optimum contact time was determined as 150 minutes by providing a dynamic balance.…”

Section: Kinetic Studiesmentioning

confidence: 99%

Synthesis of acid treated carbonized mandarin peel for purification of copper

Ünügül

Nigiz

2020

Water Practice and Technology

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In this study; acid treated carbonized mandarin peel (CMP) adsorbent was prepared and the adsorption behaviour of the adsorbent for copper removal was investigated. In the adsorption studies the effects of initial metal concentration, solution pH, adsorbent dosage and contact time on the removal were investigated. As a result; the highest removal of 100% was achieved when the copper concentration in water was 5 mg/L and the adsorbent dosage was 3.75 g/L at a solution pH of 7. Isotherm studies were also done and the appropriate isotherm was obtained as the Freundlich isotherm. According to the kinetic studies, the copper adsorption onto CMP adsorbent was adopted to the pseudo-second-order adsorption kinetic. After HCl regeneration, the adsorbent maintained 94% of its activity.

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Heavy metals uptake on Malpighia emarginata D.C. seed fiber microparticles: Physicochemical characterization, modeling and application in landfill leachate

Cited by 27 publications

References 37 publications

Characterization of leachate produced by a landfill and its influence on a sewage treatment plant

Characterization of leachate produced by a landfill and its influence on a sewage treatment plant

K2CO3-Activated Pomelo Peels as a High-Performance Adsorbent for Removal of Cu(II): Preparation, Characterization, and Adsorption Studies

Synthesis of acid treated carbonized mandarin peel for purification of copper

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