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Highlights ► Combustible components are extracted from sewage sludge through the carbonization process and the solvent-extraction process. ► The extract is composed of 99.7% combustible components and 0.3% ash. ► Similar to coal within the coal band and the FT-IR thereof. ► DTG analysis...
Highlights ► The gas yield increased by more than 80% with temperature from 600 to 1000 °C. ► The CO and CH 4 content increased with temperature, while the CO 2 content decreased. ► Hydroxyl, aliphatic C H, C O, olefinic C C and ether groups were lost above 800 °C. ► The shrinkage of...
Highlights ► We determine main pollutants in Tunisian landfill leachate. ► We investigated the treatability of Tunisian leachate by a cascade bioreactor with submerged biofilm. ► We examine pH effect on bio-treatment performances. ► COD was efficiently removed with no significant pH...
Highlights ► Oxalate production at different initial Pb 2+ concentrations was investigated. ► Moderate level of Pb 2+ induces more production of oxalate. ► More oxalate production is with better Pb 2+ passivation effect. ► More oxalate production is with more effective changes in lignin...
Highlights ► Looking for application of H 2 -production from organic substrates in CSTR reactor. ► Acclimation of soil and digested slurry allowed obtaining efficient mixed inocula. ► Development of a methodology to obtain maximized bio-H 2 potential in batch test. ► Organic waste gave...
Highlights ► Microwave was researched for pretreating rape straw with high energy efficiency. ► Energy consumption was calculated and compared with previous results. ► Optimal conditions were found depending on energy efficiency and bioethanol yield.
Highlights ► Biogas production from the residues of second generation bioethanol production. ► Comparison of two pretreatments agents, lime and alkaline hydrogen peroxide. ► Evaluation of four different biofuel production scenarios. ► Liquid fuels are of great interest and justify the...
Highlights ► Bermuda grass cultivar, growing conditions, and management practices affect biomass yield. ► Many pretreatment techniques have been studied to improve the digestibility of Bermuda grass. ► Enzymatic hydrolysis has been optimized to maximize sugar yield and reduce enzyme cost....
Highlights ► We determinated the influence of several factors on manure methanogenic potential. ► The substrate concentration and sludge origin influence on manure’s biomethanization. ► The nutrients-buffer demand and inoculum/substrate ratio not influence the process.
► A control scheme to optimize anaerobic digestion processes was designed and experimentally validated. ► The control scheme can be easily implemented by using standard COD measurements. ► No expensive on-line analyzers are required. ► The organic pollution level is effectively regulated...
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