BACKGROUND Biohythane production via two-stage fermentation is a promising direction for sustainable energy recovery from lignocellulosic biomass. However, the utilization of lignocellulosic biomass suffers from specific natural recalcitrance. Hydrothermal liquefaction (HTL) is an emerging technology for the liquefaction of biomass, but there are still several challenges for the coupling of HTL...

Objetivou-se com este trabalho mostrar que o tratamento combinado de lixiviado aterro sanitário (LAS) e esgoto (ES) é uma solução promissora, sabendo-se a diluição do ocorre diminuição elevadas concentrações nitrogênio amoniacal matéria orgânica. Neste sentido, avaliação comportamento um reator Upflow Anaerobic Sludge Blanket (UASB) frente à adição LAS ao ES, sem processo sofra desestabilização...

To monitor the granularity of anaerobic sludge, the determination of granule density is vital importance. Granular sludge is the key factor for the efficient operation of upflow anaerobic sludge blanket (UASB) reactor. For this reason several techniques have been proposed. In the proposed algorithm, the granular density was calculated. The granular density was strongly correlated with the VSS/T...

This paper presents the results of an investigation into the treatment of Tehran Refinery effluents in UASB reactors. Four pilot-scale UASB reactors were built with similar dimensions, each with a volume of 45.78 1, and operated in parallel at 37 °C. The sludge seed was prepared from the waste activated sludge of the wastewater treatment unit of the refinery. The organic loading rates were grad...

The lack of proper sludge withdrawal routines has been one the main causes solids washout and consequent deterioration effluent quality from up-flow anaerobic blanket (UASB) reactors treating sewage in developing countries. establishment an adequate routine depends on knowledge mass inside reactor, but for this, it is necessary to continuously monitor solid’s profile along height digestion comp...

Human enteric pathogens are a major global concern, as they responsible for thousands of preventable deaths every year. New in wastewater constantly emerging. For example, SARS-CoV-2 has been recently detected domestic sewage and primary sludge. Knowledge about the reduction viruses treatment their partitioning between treated liquid effluent versus sludge or biosolids is still very scarce, esp...

n this paper, a mathematical model has been derived to predict the granulation time of anaerobic sludge in UASB reactors. In the proposed model, some physical, chemical and biological parameters affecting the granulation phenomena have been considered. To validate the model, 12 pilot-scale experiments in 4 UASB reactors are carried out and the results are discussed here. The reactors are starte...