In-situ modification of soil organic matter towards adsorption and desorption of phenol and its chlorinated derivatives

Ololade, Isaac Ayodele; Adeola, Adedapo O.; Oladoja, N.A.; Ololade, Oluwaranti Olubunmi; Nwaolisa, Stanley U.; Alabi, Adenike Bosede; Ogungbe, Ifedayo Victor

doi:10.1016/j.jece.2018.05.034

Cited by 29 publications

(23 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(q e,cal − q e, exp ) 2 i concentration (mg/g), C e is the liquid phase equilibrium concentration (mg/L), and K d (L/g) is the sorption distribution coefficient (Ololade et al 2018;Adeola & Forbes 2019).…”

Section: Sorption Isotherm Experimentsmentioning

confidence: 99%

Facile synthesis of graphene wool doped with oleylamine-capped silver nanoparticles (GW-αAgNPs) for water treatment applications

et al. 2021

Self Cite

View full text Add to dashboard Cite

The facile synthesis of graphene wool doped with oleylamine-capped silver nanoparticles (GW-αAgNP) was achieved in this study. The effect of concentration, pH, temperature and natural organic matter (NOM) on the adsorption of a human carcinogen (benzo(a)pyrene, BaP) was evaluated using the doped graphene wool adsorbent. Furthermore, the antibacterial potential of GW-αAgNP against selected drug-resistant Gram-negative and Gram-positive bacteria strains was evaluated. Isotherm data revealed that adsorption of BaP by GW-αAgNP was best described by a multilayer adsorption mechanism predicted by Freundlich model with least ERRSQ < 0.79. The doping of graphene wool with hydrophobic AgNPs coated with functional moieties significantly increased the maximum adsorption capacity of GW-αAgNP over GW based on the qmax and qm predicted by Langmuir and Sips models. π-π interactions contributed to sorbent-sorbate interaction, due to the presence of delocalized electrons. GW-αAgNP-BaP interaction is a spontaneous exothermic process (negative $$\Delta H^\circ$$ Δ H ∘ and $$\Delta G)$$ Δ G ) , with better removal efficiency in the absence of natural organic matter (NOM). While GW is more feasible with higher maximum adsorption capacity (qm) at elevated temperatures, GW-αAgNP adsorption capacity and efficiency is best at ambient temperature, in the absence of natural organic matter (NOM), and preferable in terms of energy demands and process economics. GW-αAgNP significantly inhibited the growth of Gram-negative Pseudomonas aeruginosa and Gram-positive Bacillus subtilis strains, at 1000 mg/L dosage in preliminary tests, which provides the rationale for future evaluation of this hybrid material as a smart solution to chemical and microbiological water pollution.

show abstract

Section: Sorption Isotherm Experimentsmentioning

confidence: 99%

Facile synthesis of graphene wool doped with oleylamine-capped silver nanoparticles (GW-αAgNPs) for water treatment applications

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…The practicality of fractionating geosorbents into sorption domains and the establishment of dominant mechanisms of adsorption is questionable given that there is typically insufficient microscopic data. However, it was suggested that predictions can be approached mechanistically by gaining knowledge of simpler systems via study of the components (Ololade et al, 2018; Ran et al, 2002, 2003; Wu & Zhu, 2012), thereby establishing an in‐depth knowledge base for prediction of complex, heterogeneous geosorbents in their bulk state.…”

Section: Adsorption Processesmentioning

confidence: 99%

Advances in water treatment technologies for removal of polycyclic aromatic hydrocarbons: Existing concepts, emerging trends, and future prospects

Adeola

Forbes

2020

Water Environment Research

Self Cite

View full text Add to dashboard Cite

In the last two decades, environmental experts have focused on the development of several biological, chemical, physical, and thermal methods/technologies for remediation of PAH‐polluted water. Some of the findings have been applied to field‐scale treatment, while others have remained as prototypes and semi‐pilot studies. Existing treatment options include extraction, chemical oxidation, bioremediation, photocatalytic degradation, and adsorption (employing adsorbents such as biomass derivatives, geosorbents, zeolites, mesoporous silica, polymers, nanocomposites, and graphene‐based materials). Electrokinetic remediation, advanced phytoremediation, green nanoremediation, enhanced remediation using biocatalysts, and integrated approaches are still at the developmental stage and hold great potential. Water is an essential component of the ecosystem and highly susceptible to PAH contamination due to crude oil exploration and spillage, and improper municipal and industrial waste management, yet comprehensive reviews on PAH remediation are only available for contaminated soils, despite the several treatment methods developed for the remediation of PAH‐polluted water. This review seeks to provide a comprehensive overview of existing and emerging methods/technologies, in order to bridge information gaps toward ensuring a green and sustainable remedial approach for PAH‐contaminated aqueous systems. Practitioner points Comprehensive review of existing and emerging technologies for remediation of PAH‐polluted water. Factors influencing efficiency of various methods, challenges and merits were discussed. Green nano‐adsorbents, nano‐oxidants and bio/phytoremediation are desirous for ecofriendly and economical PAH remediation. Adoption of an integrated approach for the efficient and sustainable remediation of PAH‐contaminated water is recommended.

show abstract

“…The release of phenolic compounds to the soil can be by leaching from treated wood products, atmospheric deposition in precipitation (such as rain and snow), herbicidal application, and spills at industrial facilities and at hazardous waste sites. However, adsorption of these chlorophenols in soils is pH dependent because it increases under acidic conditions and it decreases in neutral and basic conditions [6]. In soil, soluble phenols face four different fates.…”

Section: Fate In Soilsmentioning

confidence: 99%

“…For example, sorption of 2,4-DCP decreased with increasing in pH and increases as the pH decrease because a greater proportion of 2,4-DCP is in molecular form relative to anionic form [9,[10][11][12]. It was reported that the adsorption of chlorophenols was highly dependent on pH since it has strong influence on the surface charge of the soils [6]. In general, the adsorption of chlorophenols decreases as their water solubility increases because of their high affinity for the water phase, and conversely, the adsorption increases with the hydrophobicity of compounds.…”

Section: Fate In Soilsmentioning

confidence: 99%

“…Even though NOMs adsorbed on the sorbent surface can function as a new adsorbent, their affinity with organic compounds appears to be smaller than the affinity between natural sorbents and organic compounds. Both of these competing effects are expected to occur during the adsorption and desorption process [6]. Literatures suggest that adsorption of chlorinated phenols to the soil is the key process that affects their ecotoxicological impact, environmental mobility and the rate of degradation [20].…”

Section: Fate In Soilsmentioning

confidence: 99%

See 1 more Smart Citation

Fate and Toxicity of Chlorinated Phenols of Environmental Implications: A Review

Adeola¹

2018

MACIJ

View full text Add to dashboard Cite

Chlorophenols are ubiquitous contaminants in the environment. They are used as intermediates in manufacturing agricultural chemicals such as biocides, fungicides, herbicides, insecticides, and precursors in the synthesis of other pesticides; pharmaceuticals and dyes since the 1930s. Chlorophenols are released into the environment from several sources such as industrial waste effluent discharge, application of pesticides, insecticides, or by degradation of complex chlorinated hydrocarbons. Thermal, biological and chemical degradation of chlorophenols is responsible for the harmful metabolites which constitute public health problems. These compounds may cause histopathological alterations, genotoxicity, mutagenicity, and carcinogenicity amongst other health problems in humans and animals. Furthermore, the recalcitrant nature of chlorophenolic compounds to degradation is responsible for its persistence, and a comprehensive understanding of the fate and mobility of these compounds and their metabolites is needed for environmental monitoring and risk assessment of their pathogenicity to humans and animals. This review explores research on mobility of chlorophenols in different media, and the health implication and toxicity of chlorophenols with regards to animal, humans and the environment.

show abstract

In-situ modification of soil organic matter towards adsorption and desorption of phenol and its chlorinated derivatives

Cited by 29 publications

References 51 publications

Facile synthesis of graphene wool doped with oleylamine-capped silver nanoparticles (GW-αAgNPs) for water treatment applications

Facile synthesis of graphene wool doped with oleylamine-capped silver nanoparticles (GW-αAgNPs) for water treatment applications

Advances in water treatment technologies for removal of polycyclic aromatic hydrocarbons: Existing concepts, emerging trends, and future prospects

Fate and Toxicity of Chlorinated Phenols of Environmental Implications: A Review

Contact Info

Product

Resources

About