Keratinous Materials as Novel Absorbent Systems for Toxic Pollutants

Ghosh, A. K.; Collie, Stewart

doi:10.14429/dsj.64.7319

Cited by 67 publications

(32 citation statements)

References 85 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This situation may however change if some important usage is identified [4]. The potential of using chicken feather to decontaminate polluted water has been reported by [5,6].The methods of pollutant removal could be by physiosorption or chemisorption [6].The former involves trapping pollutants from the influents on their pores'network while the latter is through their chemical functional groups. The removal of heavy metal contaminants from electroplating plant effluent with sorbents made from agricultural wastes (sawdust and teak tree bark) has been demonstrated [7].Such low-cost adsorbents have also been used to remove other metals from electroplating waste.…”

Section: Introductionmentioning

confidence: 99%

The Development of Filtration and Bioremediation Technique for Decontaminating Bitumen-Polluted Water

Atojunere¹,

Ogedengbe²,

Lucas³

2018

International Conference of Recent Trends in Environmental Science and Engineering

View full text Add to dashboard Cite

-Water resources in some areas of Ondo State, Nigeria, are polluted by suspended oily solids, toxic metals and dissolved petroleum hydrocarbons. Non-exploitation of the bitumen deposits in the areas for commercial purpose has aggravated this level of pollution. The objective of the work was to develop a decontamination facility for small-to-medium scale operation. A Bitumen Polluted Water Treatment System (BPWTS) was designed and fabricated using acrylic glass (Perspex) material and with appropriate flow kinetics. The BPWTS comprised four columns for filtration and bioremediation. Processed Chicken feather (PCF) and African walnut seed shells were biosorbents at stages 1 and 3, while stage 2 was for bioremediation with Pseudomonas aeruginosa as inoculum and stage 4 was for water discolouration using activated charcoal. Bitumen-polluted water samples from affected streams and wells were run through the BPWTS and the removal efficiency (RE) was determined. Treated water at each stage was tested for turbidity, pH, suspended solids,toxic metals and dissolved petroleum hydrocarbon. Suspended solids reduced from 1.2 × 10 3 to 6.2 × 10 mg/L in stage 1, indicating PCF's good oleophilic properties. This prevented the bitumen solids from reaching other stages. At stage 2, Pseudomonas aeruginosa reduced concentrations of lead (1.0 × 10 −2 to 1.0 × 10 −3 mg/L), benzene (3.7 to 2.5 µg/L), p-xylene (3.2 to 1.2 µg/L) and o-xylene (3.2 to 1.2 µg/L). At stage 3, residual solids were removed and in stage 4 discolouration of water reduced from 15.60 to 0.98 HU. Pollution indices of treated and untreated water samples were significantly different. The RE of the BPWTS were 95.0% for suspended solids, zinc 82.0%, benzene 70.0%, o-xylene 65.0%, p-xylene 65.0% and lead 62.0%, bringing the treated water to within permissible level for potable water. Decontamination and bioremediation technique developed reduced water pollution indicators, and in turn health risk to human beings.

show abstract

Section: Introductionmentioning

confidence: 99%

The Development of Filtration and Bioremediation Technique for Decontaminating Bitumen-Polluted Water

Atojunere¹,

Ogedengbe²,

Lucas³

2018

International Conference of Recent Trends in Environmental Science and Engineering

View full text Add to dashboard Cite

show abstract

“…Hairs, as keratin-based adsorbents, are reported to reduce the concentration of HMs in both soil and water [7,52,[58][59][60][61][62]. There are two main mechanisms called physiosorption and chemisorption through which keratin material can remove HMs from air and solution.…”

Section: Discussionmentioning

confidence: 99%

Effective Amendments on Cadmium, Arsenic, Chromium and Lead Contaminated Paddy Soil for Rice Safety

Ullah

Ying

et al. 2020

Agronomy

View full text Add to dashboard Cite

Contamination of paddy soils with heavy metals and metalloids poses a risk to human health through the food chain. For safe agricultural production in contaminated paddy soils, “in situ” remediation through the unavailability of heavy metals from contaminated soils was investigated in order to develop cost-effective and eco-friendly approaches for soils contaminated with complexed heavy metals (HMs) and metalloids. In the present study, the effectiveness of different soil amendments, including sulfur-containing materials (hair or cysteine), manganese compounds as an antagonist and an oxidant, zeolite and iron oxide as adsorbents, and their combinations through coating or modification, was investigated by a pot experiment with rice plants and chemical analysis. Two levels of each treatment were made, termed X1 and X2, which were a single and double dose of each treatment respectively, while CaCO3 was used as a basal and pH enhancement amendment in all treatments to identify the best combination of the above treatments in the in situ remediation of heavy metals and metalloids. The rice plants were kept under the flooded condition. Results indicated that the bioavailability of As, Cd, Cr, and Pb in soil was significantly decreased with level two (X2) of iron oxide coated with modified hairs (T7X2) followed by level two (X2) of zeolite coated with KMnO4. The iron oxide coated with modified hairs (X2) decreased the concentrations of heavy metals and metalloids in rice plants in the order Pb ˃ As ˃ Cr ˃ Cd by 81%, 80%, 79% and 46%, respectively, followed by zeolite coated with KMnO4 (X2) in the order Pb ˃ As ˃ Cr ˃ Cd by 78%, 76%, 71%, and 31%, respectively, to control. The available content of these elements in soil was decreased in the order As > Cr> Pb > Cd by 67%, 66%, 64% and 60%, respectively, through iron oxide coated with modified hairs, followed by zeolite coated with KMnO4 in the order Pb ˃ Cr ˃ Cd ˃ As by 57%, 53%, 50%, and 46%, respectively, to control, which can explain the decreased bioavailability by these amendments. In addition, the maximum shoot dry and leaf area were noticed in the pots treated with iron oxide coated with modified hairs and zeolite coated with KMnO4. There is potential to use modified hairs (MHs) with iron oxide and KMnO4-coated zeolite as soil amendments to develop a cost-effective and efficient “in situ” remediation technology for As, Cd, Pb, and Cr-contaminated rice paddy soils, especially for the soils with complex contamination by Cd and As.

show abstract

“…Thus, keratin has been used as framework for tissue engineering applications [3][4][5] and filters for the removal of heavy metals and some organic compounds. [6]. For filter applications, it can be prepared by using various techniques including self-assembly, phase separation, drawing, template synthesis and electrospinning technique [7].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Morphology and Photocatalytic Activities of Electrospun Chicken Feather Keratin/PLA/TiO2/Clay Nanofibers

Siriorn

Wootthikanokkhan

2020

E3S Web Conf.

View full text Add to dashboard Cite

This research has focused on the fabrication of electro spun-keratin base composite nanofiber, in order to develop the organic dye removal filters. The filters were prepared from a keratin-base material, which was extracted from chicken feathers. A biodegradable polymer including Poly (lactic acid) was blended into keratin to improve fibre process-ability. Titanium dioxide (anatase) and clay (Na-montmorillonite) were mixed into the PLA/Keratin blended solution prior to fabrication into non-woven fibre using the electro-spinning process. The objective of this research was to study the effect of TiO2 and clay on the process-ability, the morphology, and the filter efficiency (methylene blue removal) of the fibres. SEM images showed the morphology of small PLA/Keratin/clay-base fibres. SEM-scan mapping EDX technique showed a good dispersion of keratin, clay and TiO2 along the fibres. XRD pattern also showed the existence of PLA, keratin and TiO2. But the peak of clay was not strong enough. However, the evidence of clay was clearly shown by SEM-EDX technique as reported above. The capability to remove organic dye (methylene blue) was investigated by using UV-Vis spectrophotometer technique. From all of our results, it can be concluded that PLA/Keratin/TiO2/clay is an effective filter for the removal of organic dye from wastewater.

show abstract

Keratinous Materials as Novel Absorbent Systems for Toxic Pollutants

Cited by 67 publications

References 85 publications

The Development of Filtration and Bioremediation Technique for Decontaminating Bitumen-Polluted Water

The Development of Filtration and Bioremediation Technique for Decontaminating Bitumen-Polluted Water

Effective Amendments on Cadmium, Arsenic, Chromium and Lead Contaminated Paddy Soil for Rice Safety

Investigation of Morphology and Photocatalytic Activities of Electrospun Chicken Feather Keratin/PLA/TiO2/Clay Nanofibers

Contact Info

Product

Resources

About