Use of curdlan and activated carbon composed adsorbents for heavy metal removal

Moon, Chan-Jun; Lee, Jung-Heon

doi:10.1016/j.procbio.2004.05.009

Cited by 46 publications

(24 citation statements)

References 13 publications

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“…During the hydrothermal treatment, arabinose was rather easily removed from the xylanbackbone (in the case of wheat bran, brewery's spent grain and corncobs), the acetyl groups were partly released becoming available for the depolymerization of xylan, and also a part of the uronic acids were released (mainly for Eucalyptus). A wide variety of xylo-oligosaccharides with different structure were obtained depending on the original raw material used [57][58][59]. In the case of corncobs, autohydrolysis at non isothermal conditions allows to remove up to 94% of the xylan, while the cellulose was retained in the solid and partial delignification was achieved (up to 26%) [58].…”

Section: Hydrothermal Treatmentsmentioning

confidence: 99%

“…A wide variety of xylo-oligosaccharides with different structure were obtained depending on the original raw material used [57][58][59]. In the case of corncobs, autohydrolysis at non isothermal conditions allows to remove up to 94% of the xylan, while the cellulose was retained in the solid and partial delignification was achieved (up to 26%) [58]. For the brewery's spent grain, the maximal xylo-oligosaccharides yield (61% of the feedstock xylan) was obtained at 190°C after 5 min of reaction, while between 63 -77% of the initial xylan was solubilized [59].…”

Section: Hydrothermal Treatmentsmentioning

confidence: 99%

“…This can be carried out in enzymatic membrane reactors (EMRs), which include a membrane that holds an active enzyme, either by light or by strong bonding. In addition to the intrinsic advantages of these systems, the process is continuous, the catalyst component can be re-used and a permeate is obtained free of this compound [57,58]. In these experiments, a carbon/polysulfone composite membrane was used, in which the carbon acts as the base support on which the enzyme bonds [59].…”

Section: Enzymatic Membrane Reactorsmentioning

confidence: 99%

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Autohydrolysis of agricultural by-products for the production of xylo-oligosaccharides

Nabarlatz

Ebringerová

Montané

2007

Carbohydrate Polymers

236

105

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Section: Hydrothermal Treatmentsmentioning

confidence: 99%

Section: Hydrothermal Treatmentsmentioning

confidence: 99%

Section: Enzymatic Membrane Reactorsmentioning

confidence: 99%

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Autohydrolysis of agricultural by-products for the production of xylo-oligosaccharides

Nabarlatz

Ebringerová

Montané

2007

Carbohydrate Polymers

236

105

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“…Removing metal ions from wastewater is a diffi cult problem because of their appreciable solubility in aqueous solutions. Many methods have been proposed for their removal from industrial effl uents, such as ion exchange [Dąbrowski et al 2004], membrane separation [Paaez-Hernaandez et al 2005], chemical precipitation [Matlock, Howerton, and Atwood 2002] and adsorption onto activated carbon [Moon and Lee 2005], evaporation, electro deposition, coagulation, etc. [Lameiras, Quintelas, and Taveres 2008].…”

Section: Introductionmentioning

confidence: 99%

Biosorption of Cu II and Cd II Heavy Metals from Aqueous Solutions by Paprika Waste

Kalak

Dudczak

Szychowiak

et al. 2017

SOEP

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Abstract:In this study, the adsorption conditions of Cu(II) and Cd(II) metal ions onto dried paprika residues have been studied. Paprika waste is generated in the food industry and it can be used for removing copper Cu(II) and cadmium Cd(II) from wastewater. Paprika is usually consumed as a fresh fruit or dried and used as ground and natural fl avouring in the food industry, but also as a colouring agent for many food products, such as spicy culinary, cheese food coatings, meat products, popcorn oil etc. It is also used in the pharmaceutical and cosmetic industries. Spice pepper is added to dried soups, cheese, chips and spice mixtures. Paprika is a source of biologically active compounds, such as fl avonoids, phenols, carotenoids, capsaicinoids and vitamins. Its fruits contain resins, pentosans, cellulose, protein, pungent principles, colouring pigments, mineral elements and small amounts of volatile oil. Seeds include fi xed non-volatile oil, which consists of triglycerides (60%), mainly linoleic acid and other unsaturated fatty acids. All the ingredients exhibit various benefi ts to human health, antioxidant capacity and other biological activities, but also sorption properties in relation to heavy metal ions. In this research the adsorption of metal ions like Cu(II) and Cd(II) from aqueous solutions at diff erent pH values 2-5 has been investigated. Th e tests were conducted to study the eff ects of the mass of biosorbent, various metal ion concentration, pH level, contact time on adsorption isotherms of the metals and a maximum loading capacity. Th e results showed that the copper and cadmium ions were signifi cantly bound by paprika waste, which was also confi rmed by FT-IR 1 Th e research work did not have any fi nancial support from organizations or institutions. 105Biosorption of Cu(II) and Cd(II) heavy metals from aqueous solutions by paprika waste measurements. Th e results suggest that paprika waste has the possibility to be used as eff ective adsorbent for copper and cadmium ions removal.Keywords: paprika residues, Cu(II) and Cd(II) metal ions, adsorptive removal.JEL classifi cation: Q53, Q55, Q57. BIOSORPCJA METALI CIĘŻKICH CuII I CdII Z ROZTWORÓW WODNYCH Z WYKORZYSTANIEM ODPADÓW PAPRYKIStreszczenie: Celem pracy było wykazanie możliwości wykorzystania suszonych odpadów papryki do adsorpcji jonów metali Cu(II) i Cd(II) w różnych warunkach. Odpady papryki powstają w wyniku przetwórstwa w przemyśle spożywczym i mogą być potencjalnie stosowane do usuwania jonów miedzi i kadmu ze ścieków. Papryka zazwyczaj jest spożywana w postaci świeżych lub suszonych owoców oraz wykorzystywana jako naturalny środek aromatyczny w przemyśle spożywczym, ale także jako barwnik do wielu produktów spożywczych, takich jak powłoki produktów serowych, produkty pikantne, produkty mięsne, oleje itp. Znajduje również zastosowanie w przemyśle farmaceutycznym i kosmetycznym. Przyprawę papryki dodaje się do suszonych zup, serów, chipsów i mieszanek przyprawowych. Papryka jest źródłem związków biologicznie czynnych, takich jak...

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“…Titanium dioxide (TiO 2 ) photocatalyst as a semiconductor material has been well studied for photocatalytic degradation of pollutants due to its inexpensive, non-toxic, good stability, excellent photoelectric properties and reusable performances [1][2][3]. However, it has a wide band gap (3.0-3.2 eV), and usually cannot be effectively activated by the solar light for degradation of pollution [4].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of molecularly imprinted polypyrrole/titanium dioxide nanocomposites and its selective photocatalytic degradation of rhodamine B under visible light irradiation

He¹,

Bao²,

Sun³

et al. 2014

Express Polym. Lett.

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Abstract. Highly selective molecularly imprinted nanocomposites MIP RhB -PPy/TiO 2 were successfully prepared by surface molecular imprinting technique with rhodamine B (RhB) as template molecule. The prepared MIP RhB -PPy/TiO 2 coated with a thin imprinted layer could respond to visible light. The static and dynamic binding experiments revealed that MIP RhB -PPy/TiO 2 possessed strong affinity, high adsorption capacity and fast adsorption rate for RhB. The selectivity experiments indicated that MIP RhB -PPy/TiO 2 had excellent recognition selectivity for RhB. Selective photocatalytic degradation experiments indicated that the apparent rate constant (k) for the photodegradation of RhB over MIP RhB -PPy/TiO 2 is 0.0158 min -1 , being 3.6 times of that over non-imprinted nanocomposites NIP-PPy/TiO 2 (0.0044 min -1 ). Compared with the NIP-PPy/TiO 2 , MIP RhB -PPy/TiO 2 showed higher photocatalytic selectivity toward RhB under visible light, which was attributed the introduction of the imprinted cavities on the surface of MIP RhB -PPy/TiO 2 . Moreover, MIP RhB -PPy/TiO 2 exhibited high reusability and stability. The results indicate that molecularly imprinted nanocomposites MIP RhB -PPy/TiO 2 have a promising perspective in industrial wastewater treatment.

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Use of curdlan and activated carbon composed adsorbents for heavy metal removal

Cited by 46 publications

References 13 publications

Autohydrolysis of agricultural by-products for the production of xylo-oligosaccharides

Autohydrolysis of agricultural by-products for the production of xylo-oligosaccharides

Biosorption of Cu II and Cd II Heavy Metals from Aqueous Solutions by Paprika Waste

Synthesis of molecularly imprinted polypyrrole/titanium dioxide nanocomposites and its selective photocatalytic degradation of rhodamine B under visible light irradiation

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