Phytoextraction of heavy metals from tannery sludge: A cleaner approach

Juel, Ariful Islam; Noyon, Ashikur Rahaman; Mizan, Al; Hashem, Md. Abul; Azam, Golam

doi:10.1002/ep.13928

Cited by 7 publications

(10 citation statements)

References 43 publications

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“…Furthermore, a new peak with enhanced intensity appears around 1590 cm −1 , attributed to NH interactions 35 . Notably, several fluctuating peaks between 1705 and 2200 cm −1 indicate the presence of oxidized lignin in the solvent extracted from sugarcane fiber and the peak at 3310 cm −1 attributed to COOH interactions which comes from buffing dust 2,33 . These findings underscore the robust chemical interaction between buffing dust and sugarcane fiber in the presence of NRL which strongly validates the composite formation.…”

Section: Resultssupporting

confidence: 58%

“…During the breakdown of protein waste material, sulfide, ammonia, hazardous odor, and other organic volatile compounds are generated. 2 The waste from the chrome tanning process contains Cr (III) and their oxidized product, where Cr (III) shifts to Cr (VI) at 800 C, which is carcinogenic in nature. 3 Gaseous emissions from the process are ammonia, hydrogen sulfide, amines, and volatile hydrocarbons.…”

Section: Introductionmentioning

confidence: 99%

“…These wastes comprised of high level of suspended particulates, dissolved solids, organic and inorganic materials, potential hazardous metal salts, and chromium metal ions. During the breakdown of protein waste material, sulfide, ammonia, hazardous odor, and other organic volatile compounds are generated 2 . The waste from the chrome tanning process contains Cr (III) and their oxidized product, where Cr (III) shifts to Cr (VI) at 800°C, which is carcinogenic in nature 3 .…”

Section: Introductionmentioning

confidence: 99%

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Biodegradable and flexible fiber‐reinforced composite sheet from tannery solid wastes: An approach of waste minimization

et al. 2023

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The rising concern towards environmental issues and non‐recyclable solid wastes preservation needs has led to the development of high‐performance biodegradable composite materials with new functionalities. In this regard, the current study focused on fabricating flexible and biodegradable composite sheets by utilizing waste buffing dust (BD) and sugarcane fiber (SF). Flexible composite sheets were fabricated using simple solution casting method with different mixing ratios of BD and SF. Wide range of characterizations like ultraviolet‐vis spectroscopy, Fourier‐transform infrared spectroscopy, thermogravimetric analysis, tensile tests, x‐ray diffractometry, scanning electron microscopy, oxygen gas transmittance rate, and soil burial tests were conducted to comprehensively evaluate their performance. The obtained results were highly promising which reveals strong bonding between BD and SF along with a uniform surface quality. Particularly, the enhancement in various key characteristics was observed for composite sheets compared to pure BD sheets. The composite sheets with the optimal content of natural rubber latex demonstrated a significant increase in tensile strength, elongation, hardness, and density by 61%, 42%, 37%, and 44%, respectively. Additionally, the composite sheet has witnessed significant improvements with an increase by 36% in gas barrier property and an enhancement of 39% in biodegradability. These findings highlight the potential of these composite sheets as a versatile material suitable for a wide range of applications which includes packaging, interior furnishing industries, and reinforcing elements in the footwear industry. Numerous advantages like simplicity, cost‐effectiveness, and flexibility of these composite sheets offer an environmentally friendly alternative that is capable of reducing waste and promoting sustainable practices.Highlights Fabricated composite sheets from waste BD and SF. Strong bonding and uniform surface quality observed. Improved thermal stability, gas barrier, and biodegradability. Enhancements in tensile strength, elongation, hardness, and density. Versatile eco‐friendly material for packaging and furnishings.

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Section: Resultssupporting

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Biodegradable and flexible fiber‐reinforced composite sheet from tannery solid wastes: An approach of waste minimization

et al. 2023

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“…These by-products can be detrimental to the environment and the surrounding ecosystem. 11,12 In the leather manufacturing process, only 20%-25% of the raw materials are transformed into finished leather, while the remaining portion is released into the environment as solid waste. [13][14][15][16] Globally, the leather industry generates around 600,000 tons of solid waste each year, with approximately 2-6 kg of buffing waste being produced for every ton of leather manufactured.…”

Section: Introductionmentioning

confidence: 99%

“…[13][14][15][16] Globally, the leather industry generates around 600,000 tons of solid waste each year, with approximately 2-6 kg of buffing waste being produced for every ton of leather manufactured. 11,16 Proper disposal of these solid wastes is essential, and waste management techniques such as anaerobic digestion, open dumping, and heat combustion are commonly employed. However, these methods pose significant environmental challenges.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of biodegradable kraft paper from buffing dust and jute fiber: Green solutions for packaging

Noyon,

Karim,

Rouf

et al. 2023

Polymer Engineering & Sci

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Addressing solid waste recycling, this study aims to develop biodegradable kraft paper from buffing dust (BD) and post‐consumed jute fiber (JF). Employing a simple solution casting method with a polyurethane binder, the kraft paper was fabricated and characterized using UV–Vis spectroscopy, FTIR, XRD, SEM, TGA, OTR, biodegradability, and tensile tests. The findings revealed covalent and hydrogen bonding between BD and JF, forming a uniform surface. Notably, the composite exhibited improved thermal stability, enhanced gas barrier properties, and biodegradability compared to individual components. Furthermore, the composite also showed 57% higher tensile strength, 38% greater elongation, 20% increased hardness, and 9% higher density compared to buffing dust. Compared to jute fiber, the increases were 125%, 91%, 30%, and 19% respectively. Moreover, the composite excelled in gas barrier performance, surpassing BD and JF by a remarkable 61% and 73% increase respectively. These significant findings underscore the vast potential of the composite kraft paper as a versatile material suitable for various applications, including packaging, interior furnishing industries, and reinforcing elements in the footwear industry. By addressing waste management and promoting sustainability, this research contributes to the development of eco‐friendly materials that align with contemporary environmental concerns.Highlights Covalent and hydrogen bonding enhance uniformity. Biodegradable kraft paper with improved properties. Impressive tensile strength, elongation, and hardness. Versatile material for eco‐friendly applications. Promotes sustainability and waste management.

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Biodegradable composite from discarded hair keratin and graphene oxide with improved mechanical, thermal and barrier properties: an eco‐friendly solution to waste materials

Noyon,

Uddin,

Dey

et al. 2023

Polymer International

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In recent years, there has been a growing concern to counter environmental pollution, and as a result, the development of biodegradable materials in various applications has become a major focus. This study aimed to fabricate a biodegradable composite by utilizing discarded hair keratin from beam house in leather processing along with incorporating graphene oxide (GO) to reduce pollution. The composite was prepared using a simple solution mixing method, where the amino functional group of keratin and carboxyl group of GO were covalently bonded under a redox system. Various analyses, including UV‐Vis spectroscopy, Fourier transform infrared spectroscopy (FT‐IR), Raman spectroscopy, Scanning electron microscopy (SEM), biodegradability, and oxygen gas transmittance rate (OTR), were carried out to evaluate the composite's structure and performance. The results demonstrated that GO was successfully integrated into the keratin matrix, with uniform dispersion of GO observed instead of agglomeration. The composite with the optimum ratio exhibited a 173.98% increase in tensile strength and a 33.52% decrease in elongation, as well as improved thermal and biodegradation properties compared to pure keratin. Furthermore, the composite displayed significantly better gas barrier properties (39%) than pure keratin, which can be attributed to the reduction of intermolecular gaps through the composite's strong bonding. Hence, the Keratin‐GO composite is a cost‐effective and biodegradable solution to waste materials, with potential use as a packaging material.This article is protected by copyright. All rights reserved.

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Phytoextraction of heavy metals from tannery sludge: A cleaner approach

Cited by 7 publications

References 43 publications

Biodegradable and flexible fiber‐reinforced composite sheet from tannery solid wastes: An approach of waste minimization

Biodegradable and flexible fiber‐reinforced composite sheet from tannery solid wastes: An approach of waste minimization

Fabrication of biodegradable kraft paper from buffing dust and jute fiber: Green solutions for packaging

Biodegradable composite from discarded hair keratin and graphene oxide with improved mechanical, thermal and barrier properties: an eco‐friendly solution to waste materials

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