Desorption of odor‐active compounds by microwaves, ultrasound, and water

Robers, A.; Figura, M.; Thiesen, Peter; Niemeyer, Bernd

doi:10.1002/aic.10334

Cited by 30 publications

(14 citation statements)

References 25 publications

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“…291 Thermal regeneration is expensive in terms of energy consumption, is time consuming, and suffers from carbon loss due to the oxidation and attrition. 292 Also, and after several successive heating and cooling cycles, the thermal treatment will cause significant deterioration of the carbon pore structure reducing the specific surface area available for the adsorption process. In many cases, conventional thermal process is replaced by heating the spent AC electrically, with graphite or metallic fabric inserted into the fixed bed, but this approach has limitations in the sense that it causes hot spots in the fixed column.…”

Section: Regeneration Capacitymentioning

confidence: 99%

A Critical Analysis on the Efficiency of Activated Carbons from Low-Cost Precursors for Heavy Metals Remediation

Gupta

Nayak

Bhushan

et al. 2014

Critical Reviews in Environmental Science and Technology

106

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A vast array of industrial waste products, agricultural by-products, and biological materials, such as bacteria, algae, yeasts, and fungi have received increased attention for heavy metal removal and recovery due to their good performance, low cost, and availability in large quantities. Such materials are cheaper, more effective alternatives to commercial activated carbon (AC) for the removal of heavy metals from aqueous solution. The authors review in greater detail the various factors affecting the adsorption capacity and cost efficiency based on the literatures and present research results. Special emphasis has been made on nature of the precursors, their pretreatment and modification, the activation conditions of time and temperature, pH of aqueous media, and regeneration/reuse potential. The authors present some of the latest important results and give a source of up-to-date literature on the ACs prepared from various low-cost precursors from agro-industrial wastes as well as from biological materials. The evolution of adsorption has turned from an interesting alternative approach into a powerful standard technique by offering a numbers of advantages: better performance in terms of ulterior adsorption capacity, rate of adsorption, solving wastewaters pollution in a cost-effective way, and overcoming part of the solid wastes problem around the world. Various advantages and challenges have been identified and a widespread and great progress in this area can be expected in the future.

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Section: Regeneration Capacitymentioning

confidence: 99%

A Critical Analysis on the Efficiency of Activated Carbons from Low-Cost Precursors for Heavy Metals Remediation

Gupta

Nayak

Bhushan

et al. 2014

Critical Reviews in Environmental Science and Technology

106

View full text Add to dashboard Cite

show abstract

“…Ausgehend von einer Entscheidungssituation über eine endliche Anzahl möglicher Elementarereignisse i = 1, 2, ..., n und den zugehörigen Eintrittswahrscheinlichkeiten p 1 , p 2 , ..., p n ergibt sich die mittlere Rate H, mit der Information ¹erzeugtª wird, nach Gl. (4).…”

Section: Problemstellungunclassified

Klassifizierung von Geruchstoffen - Ein Ansatz zur wissensbasierten Auswahl von Modellsubstanzen

Thiesen

Mahlke

Niemeyer

2005

Chemie Ingenieur Technik

Self Cite

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“…AC can be regenerated and it can recover at least 80% of its original adsorption capacity [11]. Several reactivation or regeneration technologies have been used to treat the exhausted activated carbon such as thermal [12][13][14], chemical [15][16][17], ultrasonic methods, microwave regeneration [18][19][20][21] ion-exchanged [22,23] and photo-oxidation [24,25].…”

Section: Introduction mentioning

confidence: 99%

Comparison of Two Water Regeneration Strategies for Activated Carbon Loaded with Hydrogen Sulphide Gas

Cosarsonas¹,

Rustum²,

García³

2016

MESE

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This work compares two different types of water regeneration methods, continuous washing and intermittent washing, that are applied to catalytically enhanced activated carbon previously loaded with hydrogen sulfide gas. The efficiency of the two regeneration methods was evaluated using Thermo Gravimetric Analysis (TGA), Coulorimetric titration using Karl Fisher reagent and apparent density "as is". The effectiveness of both methods in terms of regenerability, apparent density, and sulphur and organic loading was investigated. Results demonstrated that regeneration of the activated carbon by intermittent washing is more effective than by a continuous washing, as the former was able to remove more sulphur and organic loading from the activated carbon material than the latter, hence retaining its adsorption capacity.

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Desorption of odor‐active compounds by microwaves, ultrasound, and water

Abstract: The tolerance against malodors in industrialized societies decreases. Thus, it is necessary

Cited by 30 publications

References 25 publications

A Critical Analysis on the Efficiency of Activated Carbons from Low-Cost Precursors for Heavy Metals Remediation

A Critical Analysis on the Efficiency of Activated Carbons from Low-Cost Precursors for Heavy Metals Remediation

Klassifizierung von Geruchstoffen - Ein Ansatz zur wissensbasierten Auswahl von Modellsubstanzen

Comparison of Two Water Regeneration Strategies for Activated Carbon Loaded with Hydrogen Sulphide Gas

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