Heavy Metals Removal from Industrial Wastewater by Nano Adsorbent Prepared from Cucumis Melopeel Activated Carbon

Manjuladevi, M.; M, Oviyaa Sri

doi:10.15406/jnmr.2017.05.00102

Cited by 7 publications

(3 citation statements)

References 3 publications

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“…Over the years, researchers have developed adsorbent materials for the removal of toxic heavy metals from wastewater like rice husk bio-char, sugar beet pulp, TiO 2 , activated carbon, clay, etc. [19][20][21][22][23]. However, these adsorbent materials suffer from certain disadvantages such as their difficulty separating from the water after the decontamination process, higher production cost, economic unsustainability for large-scale applications, and many other reasons [24].…”

Section: Methods Used For Recycling Wastewatermentioning

confidence: 99%

Hydrogel-Based Adsorbent Material for the Effective Removal of Heavy Metals from Wastewater: A Comprehensive Review

Darban

Shahabuddin

Gaur

et al. 2022

Gels

104

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Water is a vital resource that is required for social and economic development. A rapid increase in industrialization and numerous anthropogenic activities have resulted in severe water contamination. In particular, the contamination caused by heavy metal discharge has a negative impact on human health and the aquatic environment due to the non-biodegradability, toxicity, and carcinogenic effects of heavy metals. Thus, there is an immediate need to recycle wastewater before releasing heavy metals into water bodies. Hydrogels, as potent adsorbent materials, are a good contenders for treating toxic heavy metals in wastewater. Hydrogels are a soft matter formed via the cross-linking of natural or synthetic polymers to develop a three-dimensional mesh structure. The inherent properties of hydrogels, such as biodegradability, swell-ability, and functionalization, have made them superior applications for heavy metal removal. In this review, we have emphasized the recent development in the synthesis of hydrogel-based adsorbent materials. The review starts with a discussion on the methods used for recycling wastewater. The discussion then shifts to properties, classification based on various criteria, and surface functionality. In addition, the synthesis and adsorption mechanisms are explained in detail with the understanding of the regeneration, recovery, and reuse of hydrogel-based adsorbent materials. Therefore, the cost-effective, facile, easy to modify and biodegradable hydrogel may provide a long-term solution for heavy metal removal.

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Section: Methods Used For Recycling Wastewatermentioning

confidence: 99%

Hydrogel-Based Adsorbent Material for the Effective Removal of Heavy Metals from Wastewater: A Comprehensive Review

Darban

Shahabuddin

Gaur

et al. 2022

Gels

104

View full text Add to dashboard Cite

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“…The concentration of PAHs was 1 mg/L whereas that of heavy metals was 5, 20 or 50 mg/L. Much higher concentrations were used for heavy metals to be in consistent with the difference in concentrations between PAHs and heavy metals found in industrial and domestic wastewaters where the concentrations of heavy metals are 10-1000 times those of PAHs [6,27,28]. All solutions contained 0.005 M NaNO3 to ensure the ionic strength remained constant.…”

Section: Adsorption Experimentsmentioning

confidence: 99%

Simultaneous removal of polycyclic aromatic hydrocarbons and heavy metals from water using granular activated carbon

2019

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“…In wastewater from the chemical and metallurgical industries, Cd concentrations range from 0.1 to 100 mg/L [6]. In battery industry effluent, Cd concentrations are over 100 mg/L [7]. There are also technological reasons why heavy metals need to be removed from wastewater, as they can interfere with biological wastewater treatment and biochemical stabilization of sewage sludge.…”

Section: Introductionmentioning

confidence: 99%

A Mineral By-Product from Gasification of Poultry Feathers for Removing Cd from Highly Contaminated Synthetic Wastewater

Gusiatin

Kumpienė

Janiszewska³

et al. 2020

Minerals

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Ash from poultry feather gasification was investigated as an adsorbent for Cd removal from synthetic wastewater under a range of operational conditions: initial pH (2–8) and salinity (8–38 mS/cm) of wastewater, ash dosage (2.5–50 g/L), Cd concentration (25–800 mg/L) and contact time (5–720 min). The ash was highly alkaline and had low surface area and micropores averaging 1.12 nm in diameter. Chemical/mineralogical analysis revealed a high content of P2O5 (39.9 wt %) and CaO (35.5 wt %), and the presence of calcium phosphate, hydroxyapatite and calcium. It contained only trace amounts of heavy metals, BTEX, PAHs and PCBs, making it a safe mineral by-product. Cd adsorption was described best with Langmuir and pseudo-second order models. At pH 5, an ash dosage of 5 g/L, 40 min contact time and 100 mg Cd/L, 99% of Cd was removed from wastewater. The salinity did not affect Cd sorption. The maximum adsorption capacity of Cd was very high (126.6 mg/g). Surface precipitation was the main mechanism of Cd removal, possibly accompanied by ion exchange between Cd and Ca, coprecipitation of Cd with Ca-mineral components and Cd complexation with phosphate surface sites. Poultry ash effectively removes high concentrations of toxic Cd from wastewater.

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Heavy Metals Removal from Industrial Wastewater by Nano Adsorbent Prepared from Cucumis Melopeel Activated Carbon

Cited by 7 publications

References 3 publications

Hydrogel-Based Adsorbent Material for the Effective Removal of Heavy Metals from Wastewater: A Comprehensive Review

Hydrogel-Based Adsorbent Material for the Effective Removal of Heavy Metals from Wastewater: A Comprehensive Review

Simultaneous removal of polycyclic aromatic hydrocarbons and heavy metals from water using granular activated carbon

A Mineral By-Product from Gasification of Poultry Feathers for Removing Cd from Highly Contaminated Synthetic Wastewater

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