Various water-treatment technologies for inorganic contaminants: current status and future aspects

Soni, Richa; Bhardwaj, Shefali; Shukla, Dericks Praise

doi:10.1016/b978-0-12-818965-8.00014-7

Cited by 28 publications

(13 citation statements)

References 138 publications

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“…In addition, their stability must be considered for agricultural applications to prevent cross-contamination as a result of structural deterioration. Several adsorbents have been investigated for the adsorption of pesticides from the environment, like activated carbon, zeolites, and clays; however, there are some drawbacks concerning their applications, as a result of their limited resources, low porosity, stern nonfunctionality, and instability. , …”

Section: Introductionmentioning

confidence: 99%

“…Several adsorbents have been investigated for the adsorption of pesticides from the environment, like activated carbon, 46 zeolites, 47 and clays; however, there are some drawbacks concerning their applications, as a result of their limited resources, low porosity, stern nonfunctionality, and instability. 48,49 In recent years, a relatively new class of materials, metal− organic frameworks (MOFs), have garnered attention due to their high porosity, stability, and fine-tunable nature, making them a favorable candidate for the adsorption and controlled release of pesticides for agricultural applications (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

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Metal–Organic Frameworks as Potential Agents for Extraction and Delivery of Pesticides and Agrochemicals

et al. 2022

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Pesticide contamination is a global issue, affecting nearly 44% of the global farming population, and disproportionately affecting farmers and agricultural workers in developing countries. Despite this, global pesticide usage is on the rise, with the growing demand of global food production with increasing population. Different types of porous materials, such as carbon and zeolites, have been explored for the remediation of pesticides from the environment. However, there are some limitations with these materials, especially due to lack of functional groups and relatively modest surface areas. In this regard, metal–organic frameworks (MOFs) provide us with a better alternative to conventionally used porous materials due to their versatile and highly porous structure. Recently, a number of MOFs have been studied for the extraction of pesticides from the environment as well as for targeted and controlled release of agrochemicals. Different types of pesticides and conditions have been investigated, and MOFs have proved their potential in agricultural applications. In this review, the latest studies on delivery and extraction of pesticides using MOFs are systematically reviewed, along with some recent studies on greener ways of pest control through the slow release of chemical compounds from MOF composites. Finally, we present our insights into the key issues concerning the development and translational applications of using MOFs for targeted delivery and pesticide control.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Metal–Organic Frameworks as Potential Agents for Extraction and Delivery of Pesticides and Agrochemicals

et al. 2022

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“…Temperature, adsorbent nature, and the presence of other pollutants, as well as experimental settings and parameters such as pH, pollutant concentration, contact time, particle size, and temperature, all affect adsorption performance in contaminant removal [20,25]. Because of its good adsorption capacity, active free valencies, high surface area, porous structure, surface reactivity, inertness, and thermal stability, activated carbon is a favored choice among all [26]. Activated carbon has several notable advantages, including lower operating costs, a large surface area, substantial stability, and surface and structural tunability [27].…”

Section: Introductionmentioning

confidence: 99%

A Review on Bamboo as an Adsorbent for Removal of Pollutants for Wastewater Treatment

Lamaming

Saalah

Rajin

et al. 2022

International Journal of Chemical Engineering

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Water and wastewater treatment are very important for obtaining clean and sanitary water as well as protecting the environment from toxic pollutants. Not only enriched with cellulose and carbon but the abundant resources of bamboo also make it suitable to be utilized as an adsorbent. With the right processing technologies and improvements, the potential of bamboo is unlimited. This study review provides knowledge on the use of bamboo-based adsorbents for the removal of contaminants and pollutants in wastewater in the form of activated carbon, biochar, and aerogel. This review highlighted bamboo utilization and its relevance as an adsorbent for wastewater treatment. The technologies for the processing and improvement of bamboo as well as the performance of the bamboo-based adsorbents are also discussed in this study. The adsorption capacity of bamboo has shown improvement with modification and good adsorption capacity achieved with some of the adsorbent being able to be recycled and reused.

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“…This technology includes the following adsorption methods: adsorption by activated carbon, adsorption by biochar; adsorption by nanomaterials, adsorption by membranes, and adsorption by clay minerals . Given their adsorption capacity, porous structure, and large surface area, activated carbons have proven to be an important alternative as an adsorption technology . The main drawback thereof is the high cost of regeneration and the raw material necessary for their activation, given that activated carbons need chemical agents to improve their adsorption capacity .…”

Section: Introductionmentioning

confidence: 99%

“… 25 Given their adsorption capacity, porous structure, and large surface area, activated carbons have proven to be an important alternative as an adsorption technology. 26 The main drawback thereof is the high cost of regeneration and the raw material necessary for their activation, given that activated carbons need chemical agents to improve their adsorption capacity. 27 Adsorption based on biomass sources (named biochar) can eliminate the contaminants from wastewater of textile industries, with the advantage of being both more economical and more ecological than commercial adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Prosopis juliflora Seed Waste as Biochar for the Removal of Blue Methylene: A Thermodynamic and Kinetic Study

et al. 2022

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In this work, we studied the methylene blue (MB) dye adsorption capacity on biochar derived from residues of Prosopis juliflora seed waste, a species found in the region of the tropical dry forest of Piojó in the Department of Atlántico, Colombia. The materials were obtained by pyrolysis at temperatures of 300, 500, and 700 °C. Biochar was characterized using Fourier transform infrared (FTIR), scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM-EDX), TGA, and Brunauer–Emmett–Teller (BET) techniques. The three biochar samples presented a macroporous, rough structure with pore size between 6 and 28 μm. The largest pore surface area observed was 1.28 m 2 /g for pyrolyzed biochar produced at 500 °C, larger than that of biochar produced at 700 °C, which was 0.83 m 2 /g. The adsorption results show that the maximum percentage of MB removal was 69%. According to SEM results, the material’s pore sizes varied on average from 6 to 28 μm. We modeled MB adsorption on biomass through three different isotherm models. The Freundlich model was the best-fitting model for the removal of MB ( K F = 1.447; 1/ n = 0.352). The kinetic results showed that the pseudo-second-order model was the best-fitting model for the sorption process ( q e = 2.94 mg/g; k 2 = 0.087 g/(mg/min –1 )). Furthermore, the recycling test showed that the biochar did not change its adsorption capacity significantly. Finally, under the experimental conditions, the thermodynamic parameters indicated that the removal of MB using biochar was an endothermic and spontaneous process; all Δ G ° values ranged from −2.14 to −0.95 kJ/mol; Δ H ° was 23.54 kJ/mol and Δ S ° was 79.5 J/mol.

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Various water-treatment technologies for inorganic contaminants: current status and future aspects

Cited by 28 publications

References 138 publications

Metal–Organic Frameworks as Potential Agents for Extraction and Delivery of Pesticides and Agrochemicals

Metal–Organic Frameworks as Potential Agents for Extraction and Delivery of Pesticides and Agrochemicals

A Review on Bamboo as an Adsorbent for Removal of Pollutants for Wastewater Treatment

Prosopis juliflora Seed Waste as Biochar for the Removal of Blue Methylene: A Thermodynamic and Kinetic Study

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