Removal of Paraquat from Aqueous Solutions onto Zeolite LTL

Insuwan, Wilaiporn; Rangsriwatananon, Kunwadee

doi:10.4186/ej.2017.21.2.15

Cited by 12 publications

(9 citation statements)

References 17 publications

(27 reference statements)

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“…Among the adsorption isotherms that can be used for the description of adsorption of pesticides onto unmodified and modified zeolites, Langmuir's and Freundlich's models also dominate (around 90% of reported data). Langmuir model was applicable for adsorption of paraquat [106,114,115,117], α-endosulfan [121], 2,4-D [106], and fipronil [122]; Freundlich model may be used for explanation of adsorption of simazine [123,124], nico-sulfuron [130], and mesosulfuron-methyl [108], while Langmuir-Freundlich model was applicable for adsorption of nicosulfuron [131]. Adsorption of glyphosate may be attributed to the different adsorption isotherm models depending on the adsorbent used.…”

Section: Discussionmentioning

confidence: 99%

“…The importance of the Si/Al ratio with regarding to the adsorption capacity of zeolites was also emphasized by Insuwan and Rangsriwatananon [117], who studied zeolite LTL modified with potassium (K_LTL) and in proton form (H_LTL) as adsorbents for paraquat. The results of their study revealed that the tendency of adsorption efficiency was comparable to that of aluminum content, which suggests that the immobilization depends on the Si/Al ratio.…”

Section: Other Groups Of Pesticidesmentioning

confidence: 98%

“…The K + ions may form electrostatic attraction forces, while the hydrogen ions are usually bounded on the way of H bonding. The H bonding is very strong at the negatively charged sites, and thus, zeolite H_LTL is barely replaced with paraquat, compared to K_LTL [117].…”

Section: Other Groups Of Pesticidesmentioning

confidence: 99%

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Removal of Pesticides from Waters by Adsorption: Comparison between Synthetic Zeolites and Mesoporous Silica Materials. A Review

Andrunik

Bajda

2021

Materials

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Pesticides are pollutants found in wastewater due to increasing agricultural activities over the years. Inappropriate dosing of pesticides results in the dispersal of active ingredients in the environment. The complete removal of pesticides from wastewater is an immediate concern due to their high toxicity and mobility. At present, adsorption is one of the most widely used methods for pesticide removal, in which synthetic zeolites and mesoporous silica materials are extensively applied. This article presents a systematic and comparative review of the applications and comparison of these adsorbents, based on the data reported in the literature. The paper summarizes the information collected from various studies, including the type of adsorbents and pesticides used, experimental conditions, and results of each work. The studies analyzed were laboratory-based and show potential advantages for the treatment of pesticide-bearing waters using functionalized and unfunctionalized synthetic zeolites and mesoporous silica materials. As a whole, functionalized materials are reported to exhibit better removal performance for different pesticides than conventional materials. It is expected that the results of this review will help researchers to establish a powerful strategy for the abatement of pesticides in wastewater.

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Section: Discussionmentioning

confidence: 99%

Section: Other Groups Of Pesticidesmentioning

confidence: 98%

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Removal of Pesticides from Waters by Adsorption: Comparison between Synthetic Zeolites and Mesoporous Silica Materials. A Review

Andrunik

Bajda

2021

Materials

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“…Paraquat concentrations of 30.69-134.08 µg/L were detected in a stream in Mai Chau province, Vietnam (Thi Hue et al, 2018). Paraquat concentrations of 9.3-87.0 µg/L were reported in surface water in Thailand (Insuwan and Rangsriwatananon, 2017). In Malaysia, 0.6-6.9 µg/L of paraquat residue was detected in water samples (Ismail et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Paraquat Degradation by Biological Manganese Oxide (BioMnOx) Catalyst Generated From Living Microalga Pediastrum duplex AARL G060

Thongpitak

Pumas

2020

Front. Microbiol.

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Paraquat is a non-selective fast-acting herbicide used to control weeds in agricultural crops. Many years of extensive use has caused environmental pollution and food toxicity. This agrochemical degrades slowly in nature, adsorbs onto clay lattices, and may require environmental remediation. Studies have shown that biosynthesized manganese oxide (BioMnO x) successfully degraded toxic synthetic compounds such as bis-phenol A and diclofenac, thus it has potential for paraquat degradation. In this experiment, P. duplex AARL G060 generated low (9.03 mg/L) and high (42.41 mg/L) concentrations of BioMnO x. The precipitated BioMnO x was observed by scanning electron microscopy (SEM), and the elemental composition was identified as Mn and O by energy-dispersive x-ray spectroscopy (EDS). The potential for BioMnO x to act as a catalyst in the degradation of paraquat was evaluated under three treatments: (1) a negative control (deionized water), (2) living alga with low BioMnO x plus hydrogen peroxide, and (3) living alga with high BioMnO x plus hydrogen peroxide. The results indicate that BioMnO x served as a catalyst in the Fenton-like reaction that could degrade more than 50% of the paraquat within 72 h. A kinetic study indicated that paraquat degradation by Fenton-like reactions using BioMnO x as a catalyst can be described by pseudo-first and pseudosecond order models. The pH level of the BioMnO x catalyst was neutral at the end of the experiment. In conclusion, BioMnO x is a viable and environmentally friendly catalyst to accelerate degradation of paraquat and other toxic chemicals.

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“…In numerous studies, various adsorbents (herbal, chemical, mineral) have been used to improve the quality of wastewater [14,15]. Among these adsorbents, minerals such as dolomite, zeolite, pumice and vermiculite, are gained acceptable usage because of availability and economic justification [16,17]. Recently, studies have been conducted on the probability of using adsorbents as part of porous concrete in order to improve the quality of wastewater.…”

Section: Introductionmentioning

confidence: 99%

Using Waste Vermiculite and Dolomite as Eco-Friendly Additives for Improving the Performance of Porous Concrete

Azad

Mousavi

Karami

et al. 2018

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The present study investigated the applicability of waste vermiculite and dolomite as fine aggregate, known as appropriate mineral adsorbents to enhance the quality of urban runoff, for improving the mechanical properties of porous concrete. 180 samples were mixed by adding 5-30% vermiculite and dolomite, as fine aggregate, and combining them with ordinary sand; lime sand (combining of 5-15% of each). Results showed that although adding dolomite culminated in a minor reduction of permeability-average of about 30%-, the average of compressive strength was augmented by 120%. Results of compressive strength of dolomite samples were repeated in mixtures containing vermiculite (an increase of 57%). While exploiting vermiculite in high percentages (20, 25, and 30) resulted in an extensive decrease in the permeability (94%), it was improved to an acceptable level (about 40%) after using vermiculite in combination with ordinary sand (lime sand). All dolomite and improved vermiculite mixtures, after combining vermiculite with ordinary sand, had appropriate performance in draining storm-urban runoff; such that in the weakest case, stimulated storm runoffs with heights of 10, 20, 30 and 40 cm were completely drained only after 17, 36, 59 and 87 seconds, respectively. Also, using vermiculite resulted in reducing the concrete weight (about 100 kg). Generally, although a little reduction in the permeability was seen, but using waste vermiculite and dolomite improved the mechanical properties of porous concrete significantly.

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Removal of Paraquat from Aqueous Solutions onto Zeolite LTL

Cited by 12 publications

References 17 publications

Removal of Pesticides from Waters by Adsorption: Comparison between Synthetic Zeolites and Mesoporous Silica Materials. A Review

Removal of Pesticides from Waters by Adsorption: Comparison between Synthetic Zeolites and Mesoporous Silica Materials. A Review

Paraquat Degradation by Biological Manganese Oxide (BioMnOx) Catalyst Generated From Living Microalga Pediastrum duplex AARL G060

Using Waste Vermiculite and Dolomite as Eco-Friendly Additives for Improving the Performance of Porous Concrete

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