Papers

Advanced oxidation of benzalkonium chloride in aqueous media under ozone and ozone/UV systems – Degradation kinetics and toxicity evaluation

This study investigates the degradation efficiency and kinetics of benzyldimethyldodecylammonium chloride (DDBAC) via O3/UV and O3 treatment. A catalytic effect of UV on ∙OH formation was found for the O3/UV treatment. A 91% DDBAC degradation efficiency was achieved within 20 min at an O3 dosage of 0.37 g∙h− 1 and pH of 8.0, whereas only …

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Adsorption of phosphate on iron-coated sand granules as a robust end-of-pipe purification strategy in the horticulture sector

Nutrient enrichment in water bodies, and its detrimental consequences, are a well known and worldwide environmental problem. Agricultural activities are identified as an important source of diffuse losses of phosphate and nitrate because of the leaching out fertilizers from agricultural fields. This study en- compasses the implementation of an end-of-pipe treatment by capturing phosphate from …

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Behavior of trace elements and micronutrients in manure digestate during ozone treatment

Digestate treatment techniques have recently been proposed as a strategy to increase the ultimate biogas yield from dairy manure and to improve the digestate quality as an organic fertilizer. These studies however rarely take the trace elements and nutrient partitioning into account. This study focusses on ozone treatment (5-40 g O3 kg-1 Total Solids (TS)) …

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Reviewing the potential of bio-hydrogen production by fermentation

Hydrogen is a common reactant in the petro-chemical industry and moreover recognized as a potential fuel within the next 20 years. The production of hydrogen from biomass and carbohydrate feedstock, though un- doubtedly desirable and favored, is still at the level of laboratory or pilot scale. The present work reviews the current researched pathways. Different …

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Influence of electrochemical advanced oxidation on the long-term operation of an Upflow Anaerobic Sludge Blanket (UASB) reactor treating 4-chlorophenol containing wastewater

Upflow anaerobic sludge blanket (UASB) systems are of specific interest for the treatment of high organic wastewater since they offer the opportunity to recover energy in the form of methane (biogas). The technology is highly suitable for the degradation of biodegradable organics, but its efficiency can be significantly hampered by the presence of toxic pollutants …

Influence of electrochemical advanced oxidation on the long-term operation of an Upflow Anaerobic Sludge Blanket (UASB) reactor treating 4-chlorophenol containing wastewater Read More »

Ultrasound-assisted digestate treatment of manure digestate for increased biogas production in small pilot scale anaerobic digesters

In this study, ultrasound (US) disintegration was evaluated as a digestate treatment strategy. Digestate treatment is the physical, chemical or biological treatment and recirculation AD of the effluents of the anaerobic digesters (i.e., digestate) to the digester as supplementary feed to increase their utilization potential for energy conversion or green chemical production in post-valorization pathways. …

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