Use of low-cost biopolymers and biopolymeric composite systems for heavy metal removal from water

Zia, Zahida; Hartland, Adam; Mucalo, Michael R.

doi:10.1007/s13762-020-02764-3

Cited by 64 publications

(33 citation statements)

References 143 publications

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“…[ 3 ]. Some of the most persistent and non-biodegradable pollutants related to industrial discharges, agriculture, and mining are heavy metals [ 4 ]. Polluted waters contain heavy metals such as cadmium, arsenic, cobalt, chromium, copper, lead, and zinc [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Novel Adsorbent Based on Banana Peel Waste for Removal of Heavy Metal Ions from Synthetic Solutions

et al. 2021

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Due to its valuable compounds, food waste has been gaining attention in different applications, such as life quality and environment. Combined with circular economy requirements, a valorization method for waste, especially banana waste, was to convert them into adsorbents with advanced properties. The banana waste, after thermal treatment, was used with high removal performances (100%) for the removal of heavy metals, such as Cr, Cu, Pb, and Zn, but their small particle size makes them very hard to recover and reuse. For this reason, a biopolymeric matrix was used to incorporate the banana waste. The matrix was chosen for its remarkable properties, such as low cost, biodegradability, low carbon footprint, and reduced environmental impact. In this research, different types of materials (simple banana peel ash BPA and combined with biopolymeric matrix, ALG–BPA, CS–BPA) were prepared, characterized, and tested. The materials were characterized by means of attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR), optical microscopy (OM), scanning electron microscopy (SEM), and tested for the removal of metal ions from synthetic solutions using atomic absorption spectroscopy (AAS). The ALG–BPA material proved to be the most efficient in the removal of heavy metal ions from synthetic solution, reaching even 100% metal removal for Cr, Fe, Pb, and Zn, while the CS-based materials were the least efficient, presenting the best values for Cr and Fe ions with a removal efficiency of 34.14% and 28.38%, respectively. By adding BPA to CS, the adsorption properties of the material were slightly improved, but also only for Cr and Fe ions, to 37.09% and 57.78%.

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Section: Introductionmentioning

confidence: 99%

Novel Adsorbent Based on Banana Peel Waste for Removal of Heavy Metal Ions from Synthetic Solutions

et al. 2021

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“…The parameters of kinetic models were calculated by the following formulas (Eqs. 2-4) (31-33): first order model: log(q e -q t )=log q e -( k 1 2.303 ) ×t (2) pseudo-second order model (Type 1):…”

Section: Calculations Partmentioning

confidence: 99%

“…log(q e -q t )=log q e -( k 1 2.303 ) ×t (2) pseudo-second order model (Type 1):…”

Section: Calculations Partmentioning

confidence: 99%

“…Water pollutants such as chemical wastes, dyes, pesticides, radioactive pollutants, and heavy metals), originated from industrial activity and home waste, have become an increasingly global problem for environmental sustainability (1)(2)(3). Researchers study to solve accelerating water pollution problems such as physical, chemical, and biological pollution (4).…”

Section: Introductionmentioning

confidence: 99%

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Ultrasound-Assisted Adsorption of Basic Blue 41 onto Salda mud: Optimization and Error Analysis

Tüzün

Karakuş

2021

Journal of the Turkish Chemical Society Section A: Chemistry

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We investigated the ultrasound-assisted adsorption of Basic Blue 41 (BB41) dye from aqueous solutions using a green and low-cost adsorbent such as Salda mud (SM) in our study. BET, FTIR, and SEM techniques were used to determine the morphology and the functional groups of SM before and after dye adsorption. Furthermore, we calculated different adsorption kinetics, isotherms, and error models (SSE, HYBRID, and ARE) parameters to evaluate the optimum experimental conditions such as the initial dye concentration of BB41 (6.25 -50 mg L -1 ), SM dose (0.05 -0.2 g), pH (3 -10), and sonication time (400 -3600 s). The value of uptake (%) of SM for BB41 was 94% at 50 mg L -1 ,25 o C at 3600 s. Following this, we found that the pseudo second-order (Type2) model of BB41 was the best fitted model with highest R 2 (0.973 -0.999) values. We developed a simple, low-cost, and fast to remove BM41 from water using natural and efficient SM adsorbent, which exhibited superior adsorption performance in wastewater treatment under ultrasonic irradiation.

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“…The removal of the excesses of heavy metals from water for achieving an acceptable level of quality still represents a great challenge in the water purification processes. The European Union (EU) and the World Health Organization (WHO) have identified and tabulated permissible exposure limits of toxic heavy metals in drinking water [11].…”

Section: Introductionmentioning

confidence: 99%

Sustainable Removal of Contaminants by Biopolymers: A Novel Approach for Wastewater Treatment. Current State and Future Perspectives

et al. 2021

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Naturally occurring substances or polymeric biomolecules synthesized by living organisms during their entire life cycle are commonly defined as biopolymers. Different classifications of biopolymers have been proposed, focusing on their monomeric units, thus allowing them to be distinguished into three different classes with a huge diversity of secondary structures. Due to their ability to be easily manipulated and modified, their versatility, and their sustainability, biopolymers have been proposed in different fields of interest, starting from food, pharmaceutical, and biomedical industries, (i.e., as excipients, gelling agents, stabilizers, or thickeners). Furthermore, due to their sustainable and renewable features, their biodegradability, and their non-toxicity, biopolymers have also been proposed in wastewater treatment, in combination with different reinforcing materials (natural fibers, inorganic micro- or nano-sized fillers, antioxidants, and pigments) toward the development of novel composites with improved properties. On the other hand, the improper or illegal emission of untreated industrial, agricultural, and household wastewater containing a variety of organic and inorganic pollutants represents a great risk to aquatic systems, with a negative impact due to their high toxicity. Among the remediation techniques, adsorption is widely used and documented for its efficiency, intrinsic simplicity, and low cost. Biopolymers represent promising and challenging adsorbents for aquatic environments’ decontamination from organic and inorganic pollutants, allowing for protection of the environment and living organisms. This review summarizes the results obtained in recent years from the sustainable removal of contaminants by biopolymers, trying to identify open questions and future perspectives to overcome the present gaps and limitations.

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Use of low-cost biopolymers and biopolymeric composite systems for heavy metal removal from water

Cited by 64 publications

References 143 publications

Novel Adsorbent Based on Banana Peel Waste for Removal of Heavy Metal Ions from Synthetic Solutions

Novel Adsorbent Based on Banana Peel Waste for Removal of Heavy Metal Ions from Synthetic Solutions

Ultrasound-Assisted Adsorption of Basic Blue 41 onto Salda mud: Optimization and Error Analysis

Sustainable Removal of Contaminants by Biopolymers: A Novel Approach for Wastewater Treatment. Current State and Future Perspectives

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