Results 1 to 10 of about 16,513 (257)

Strategies to Optimize Microalgae Conversion to Biogas: Co-Digestion, Pretreatment and Hydraulic Retention Time [PDF]

open access: yesMolecules, 2018
This study aims at optimizing the anaerobic digestion (AD) of biomass in microalgal-based wastewater treatment systems. It comprises the co-digestion of microalgae with primary sludge, the thermal pretreatment (75 °C for 10 h) of microalgae and the ...
Maria Solé-Bundó   +4 more
doaj   +8 more sources

Plug-flow hydrolysis with lignocellulosic residues: effect of hydraulic retention time and thin-sludge recirculation [PDF]

open access: yesBiotechnology for Biofuels and Bioproducts, 2023
Background Two parallel plug-flow reactors were successfully applied as a hydrolysis stage for the anaerobic pre-digestion of maize silage and recalcitrant bedding straw (30% and 66% w/w) under variations of the hydraulic retention time (HRT) and thin ...
Theresa Menzel   +2 more
doaj   +2 more sources

Effect of Hydraulic Retention Time on MES Operation for Biomethane Production [PDF]

open access: yesFrontiers in Energy Research, 2020
Hydraulic retention time (HRT) is one of the most important factors to be analyzed and optimized in continuous flow operations such as the integrated process of microbial electrosynthesis system (MES) and anaerobic digestion (AD).
Anirudh B. T. Nelabhotla   +3 more
doaj   +2 more sources

In situ estimation of soil hydraulic and hydrodispersive properties by inversion of electromagnetic induction measurements and soil hydrological modeling [PDF]

open access: yesHydrology and Earth System Sciences, 2022
Soil hydraulic and hydrodispersive properties are necessary for modeling water and solute fluxes in agricultural and environmental systems. Despite the major efforts in developing methods (e.g., laboratory-based, pedotransfer functions), their ...
G. Dragonetti   +6 more
doaj   +1 more source

EFFICIENCY OF MICROBIAL FUEL CELLS BASED ON THE SULPHATE-REDUCTION BY ETHANOL [PDF]

open access: yesSustainable Extraction and Processing of Raw Materials Journal, 2020
. The influence of hydraulic retention time (HRT) on the rate of sulphate–reduction and electricity generation of microbial fuel cell fed with ethanol was studied.
Svetlana Bratkova   +7 more
doaj   +1 more source

Biokinetic coefficients determination of a MBR for styrene and ethylbenzene as substrate base on Andrews model [PDF]

open access: yesAdvances in Environmental Technology, 2017
In this study, a lab-scale membrane bioreactor (MBR) was operated for a period of more than 10 months to determine the biokinetic coefficients of the system under the hydraulic retention times (HRT) of 20, 15 and 10 hrs and sludge retention times (SRT ...
Seyed Mojtaba Seyedi   +2 more
doaj   +1 more source

Effect of carbon-to-nitrogen ratio on high-rate nitrate removal in an upflow sludge blanket reactor for polluted raw water pre-treatment application

open access: yesSustainable Environment Research, 2021
The drinking water treatment plants (DWTPs) in the developing countries urgently need an efficient pre-treatment for nitrate (NO3 −) removal to cope with the increasing NO3 − pollution in raw water. An upflow sludge blanket (USB) reactor applied for NO3 −
Seow Wah How   +7 more
doaj   +1 more source

Modelling of long term nitrogen retention in surface waters [PDF]

open access: yesAdvances in Geosciences, 2010
In order to derive measures to reduce nutrient loadings into waters in Saxony, we calculated nitrogen inputs with the model STOFFBILANZ on the regional scale.
S. Halbfaß, M. Gebel, S. Bürger
doaj   +1 more source

Investigation on the performance evaluation of vertical subsurface flow constructed wetland for the treatment of rural wastewater

open access: yesWater Science and Technology, 2022
In a rural country like India, low cost and decentralized treatment units like the vertical subsurface flow constructed wetland (VSSF CW) can be reflected as a novel wastewater system. In this concern, a pilot-scale VSSF CW unit of size 0.92 m × 0.92 m ×
R. Shruthi, G. P. Shivashankara
doaj   +1 more source

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