Investigation of the anaerobic digestion of cosmetic industrial wastes: Feasibility and perspectives.

This study assessed the anaerobic digestion (AD) of wastes deriving from cosmetics production: sludge from onsite wastewater treatment plant (sWWTP), residues of shampoo/conditioner (RSC) and sludge from mascara production (MS), considered as single substrates and as mixture according to the produced amounts (54 %-wt sWWTP, 31 %-wt RSC, 13 %-wt MS, plus 2 %-wt food waste from the canteen, FW). Total COD (COD) was 624-1436 g O/kg while soluble COD was 5-23 %-wt of COD. AD tests at 35 °C achieved the following biogas yields: 0.

Evaluation of the influence of filter medium composition on treatment performances in an open-air green wall fed with greywater.

According to the European Research and Innovation Policy Agenda, nature-based solutions (NBSs) are key technologies to improve the sustainability of urban areas. Among NBSs, green walls have been recently studied for several applications, among the others the treatment of lowly polluted wastewater flows as greywater (GW, e.g.

Semi-continuous anaerobic digestion of mixed wastewater sludge with biochar addition.

This work analysed the effects of Biochar (BC) addition to the Anaerobic digestion (AD) of wastewater Mixed sludge (MS) in semi-continuous mode. A 3 L digester was operated at 37 °C for 100 days, feeding MS collected every three weeks in the same wastewater treatment plant, and 10 g L of BC. The average performance of MS digestion (biogas 188 NmL d, 68% methane) improved in presence of BC (biogas 244 NmL d, 69% methane).