Adsorption of 15 different pesticides on untreated and phosphoric acid treated biochar and charcoal from water

Taha, Sherif M.; Amer, Mohamed E.; Elmarsafy, Ashraf E.; El‐Kady, M. Y.

doi:10.1016/j.jece.2014.09.001

Cited by 176 publications

(69 citation statements)

References 55 publications

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“…The sorption behavior of some pesticides and herbicides as well as their removal mechanisms has been previously documented. For an instance, the removal performance of atrazine (Cao et al, 2009), catechol (Kasozi et al, 2010), carbaryl (Zhang et al, 2013), 2,4-Dichlorophenoxyacetic acid (Kearns et al, 2014), fluridone (Sun et al, 2011a), and oxamyl (Taha et al, 2014) by various biochars was 0.02, 20, 1, 0.72, 10 mg g À1 , and $99% sorbed, respectively, and their removal mechanisms (e.g., proposed sorption mechanisms) were mainly partitioning, pore-filling and diffusion, hydrophobic and p-p EDA interaction, surface adsorption, partitioning on armorphous-C, and H-bonding with polar groups, respectively. However, knowledge on the sorption propiconazole (PROPI) by biochar is very limited.…”

Section: Introductionmentioning

confidence: 99%

Variation in sorption of propiconazole with biochars: The effect of temperature, mineral, molecular structure, and nano-porosity

Sun

Kang

et al. 2016

Chemosphere

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Section: Introductionmentioning

confidence: 99%

Variation in sorption of propiconazole with biochars: The effect of temperature, mineral, molecular structure, and nano-porosity

Sun

Kang

et al. 2016

Chemosphere

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“…3b. the weak bands at 2962 cm -1 , characteristic of stretching of aliphatic C-H (Taha et al 2014). The appeared peaks around 1471 and *1300 were due to the various vibrations of -CH 2 and -CH 3 groups.…”

Section: Resultsmentioning

confidence: 96%

Adsorption kinetics and thermodynamics of organophosphorus profenofos pesticide onto Fe/Ni bimetallic nanoparticles

Mansouriieh

Sohrabi

Khosravi

2016

Int. J. Environ. Sci. Technol.

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Bimetallic Fe/Ni nanoparticles were synthesized and used for the removal of profenofos organophosphorus pesticide from aqueous solution. These novel bimetallic nanoparticles (Fe/Ni) were characterized by scanning electron microscopy, energy-dispersive X-ray analysis spectroscopy, X-ray diffraction, and Fourier transform infrared spectroscopy. The effect of the parameters of initial pesticide concentration, pH of the solution, adsorbent dosage, temperature, and contact time on adsorption was investigated. The adsorbent exhibited high efficiency for profenofos adsorption, and equilibrium was achieved in 8 min. The Langmuir, Freundlich, and Temkin isotherm models were used to determine equilibrium. The Langmuir model showed the best fit with the experimental data (R 2 = 0.9988). Pseudo-first-order, pseudo-second-order, and intra-particle diffusion models were tested to determine absorption kinetics. The pseudo-second-order model provided the best correlation with the results (R 2 = 0.99936). The changes in the thermodynamic parameters of Gibb's free energy, enthalpy, and entropy of the adsorption process were also evaluated. Thermodynamic parameters indicate that profenofos adsorption using Fe/Ni nanoparticles is a spontaneous and endothermic process. The value of the activation energy (E a = 109.57 kJ/mol) confirms the nature of the chemisorption of profenofos onto Fe/Ni adsorbent.

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“…There are also examples of adsorption of metal ions of chromium (Karim et al, 2015), lead (Lu et al, 2012), uranium (Kumar et al, 2011), zinc and copper (Chen et al, 2011) and a whole range of groups of organic substances which may have a negative impact on the environment. They are pesticides (Taha et al, 2014;Trigo et al, 2014;Sun et al, 2011), pp. 30 -43, DOI 10.1515/tvsbses-2017 Sonication: NOTUS -Po wersonic s.r.o., Slovakia, Type PS 04000 A, 450 W.…”

Section: Biochar Toxicitymentioning

confidence: 99%

Biochar Modification, Thermal Stability and Toxicity of Products Modification

Roupcová¹,

Romana²,

Klouda³

et al. 2017

TRANSACTIONS of the VŠB – Technical University of Ostrava, Safety Engineering Series

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Abstract:Biochar is a product obtained from processing of waste biomass. The main application of biochar is in soil and environment remediation. Some new applications of this carbonaceous material take advantage of its adsorption capacity use it as a heterogeneous catalyst for energy storage and conversion etc. This contribution describes thermal stability of the original biochar. It discusses biochar modifi ed by chemical and physical methods including a new compound of biochar-graphene oxide. The purpose of the modifi cations is to increase its active surface to introduce active functional groups into the carbon structure of biochar in relation to fi re safety and toxicity of those products.

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Adsorption of 15 different pesticides on untreated and phosphoric acid treated biochar and charcoal from water

Cited by 176 publications

References 55 publications

Variation in sorption of propiconazole with biochars: The effect of temperature, mineral, molecular structure, and nano-porosity

Variation in sorption of propiconazole with biochars: The effect of temperature, mineral, molecular structure, and nano-porosity

Adsorption kinetics and thermodynamics of organophosphorus profenofos pesticide onto Fe/Ni bimetallic nanoparticles

Biochar Modification, Thermal Stability and Toxicity of Products Modification

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