Solubilisation

14,000,000 Leading Edge Experts on the ideXlab platform

Scan Science and Technology

Contact Leading Edge Experts & Companies

Scan Science and Technology

Contact Leading Edge Experts & Companies

The Experts below are selected from a list of 86763 Experts worldwide ranked by ideXlab platform

Sigrid Stokbroekx - One of the best experts on this subject based on the ideXlab platform.

Steve J. Roser - One of the best experts on this subject based on the ideXlab platform.

Helene Carrere - One of the best experts on this subject based on the ideXlab platform.

  • effects of thermal treatments on five different waste activated sludge samples Solubilisation physical properties and anaerobic digestion
    Chemical Engineering Journal, 2008
    Co-Authors: Claire Bougrier, Jean Philippe Delgenes, Helene Carrere
    Abstract:

    Abstract In order to face excess waste activated sludge management problems, sludge anaerobic digestion with thermal pre-treatment is of great interest. If most of works agree on the optimal treatment temperature (160–180 °C), results of thermal pre-treatments in terms of biogas production are very dispersed. With the aim of analysing the impact of sludge samples, thermal pre-treatments were carried on five different waste activated sludge samples. For temperatures lower than 200 °C, COD Solubilisation was found to increase linearly with treatment temperature and all the different sludge samples behaved in the same way. For temperatures lower than 150 °C, carbohydrates Solubilisation was more important than proteins Solubilisation. Analyses of sludge apparent viscosity, settleabilty and dewaterability (CST) of pre-treated sludge pointed out a threshold temperature of 150 °C. Thermal treatments up to 190 °C allowed the biogas production to increase during batch anaerobic digestion of sludge. Biogas volume enhancement was linked to sludge COD Solubilisation and to untreated sludge initial biodegradability; the lower the initial biodegradability, the higher is the impact of thermal treatment.

R M A Napoli - One of the best experts on this subject based on the ideXlab platform.

  • effect of sonolysis on waste activated sludge Solubilisation and anaerobic biodegradability
    Desalination, 2009
    Co-Authors: Vincenzo Naddeo, Vincenzo Belgiorno, Milena Landi, Tiziano Zarra, R M A Napoli
    Abstract:

    Abstract Activated sludge processes are key technologies in wastewater treatment. These biological processes produce huge amounts of waste activated sludge (WAS) or otherwise biosolids. Mechanical, thermal, and/or chemical WAS conditioning techniques have been proposed to reduce the sludge burden. Among the WAS treatments, the pre-treatment with ultrasound (US) is one of the most innovative processes. In many anaerobic digestion processes for the treatment of the sludge produced in wastewater treatment plants, the hydrolysis of the organic matter has been identified as the rate limiting step. This study is focused on the effect of US pre-treatment of WAS to the anaerobic digestion. Particle size reduction, Chemical Oxygen Demand (COD) solubilization and biodegradability by anaerobic digestion were monitored in order to find the optimal dose in US pre-treatment. The results show the better sonolysis conditions (US density, sonication time, specific energy) which can significantly improve the COD Solubilisation and the anaerobic biodegradability.

Karen J. Edler - One of the best experts on this subject based on the ideXlab platform.