Experimental biogas production from recycled pulp and paper wastewater by biofilm technology

Effect of Alkali-NaOH Pretreatment on Methane Production from Anaerobic Digestion of Date Palm Waste

“…The experimental batch set-up, shown in Figure 1, consists of a 5 L continuous stirred tank reactor (CSTR) digester (1), made of Pyrex, heated via a thermostatic jacket from a thermostat bath SELECTA model to ensure the mesophilic conditions (37±1 °C) (2). The reactor is equipped with three orifices, one of the substrate feeding (3), one for mechanical stirring (two blade with a velocity of 200 rpm, model OS20-Pro -DLAB) (4) and one for biogas outlet (5). A bubbler contained a sodium hydroxide solution (NaOH) (6N) was used for CO 2 removal (6), and it was connected between the reactor and the gasmeter.…”

Effect of Thermal Pretreatment on the Kinetic Parameters of Anaerobic Digestion from Recycled Pulp and Paper Sludge

“…The paper mill effluents are rich in organic matters and currently treated using biological treatment systems [Cai et al, 2019]. Anaerobic digestion (AD) is a biological treatment which used to treat wastewater from recycled paper industry [Bakraoui et al, 2019b]. The process allowed reducing the concentration of the chemical oxygen demand COD in wastewater.…”

Testing of bio-organic fertilizer based on organic waste to improve the productivity of vineyards

“…The use of organic fertilizers derived from organic waste allows not only to introduce the necessary macro-and microelements into the soil, but also to solve the problem of disposal of organic waste, because when storing organic waste in landfills, the atmosphere emits greenhouse gas -methane, which can cause deterioration of human health and atmospheric air pollution. The main methods of processing organic waste include: processing of organic matter with obtaining biogas [4][5][6][7][8][9][10][11], the advantages of this method are: simple design and maintenance, low cost; disadvantages -low biogas release; long and incomplete processing of organic substrate; content of harmful flora in the processed biomass. Widely spread method of waste composting [12][13][14][15][16][17].…”