2024/1/26/ · This review explores circular economy principles in regard to ethanol production from paper-mill sludge. Environmental sustainability and renewability over fossil fuels make second generation ethanol an attractive energy source in a rapidly growing population and consumption world. Paper sludge (PS), a by-product of the pulp and paper
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2019/8/1/ · Co-digestion with grass silage, cow/pig manure or municipal sewage sludge should then be used to counteract the low nitrogen content of pulp and paper mill sludge. Keywords- Biogas, Anaerobic
2019/1/1/ · The proposed research envisioned to improve the accessibility of organics and hydrolysis of paper mill waste activated sludge for polyhydroxybutyrate production and anaerobic digestion. In order to fill this research gap an exploration has been made by adding lower dosage of calcium peroxide at acidic pH for the removal of exopolymeric
2014/11/20/ · Paper mill sludge (PS), a solid waste from pulp and paper industry, was investigated as a feedstock for acetone-butanol-ethanol (ABE) production by simultaneous saccharification and fermentation
2024/4/19/ · Paper sludge (PS) from paper mills has a significant potential for bioethanol production. In this study, waste-paper-containing PS is used as the raw material for bioethanol production because the annual waste paper utilization rate has increased globally. Although PS does not require delignification, the antiseptics and deinking agents in waste
2022/4/1/ · Pulp and paper mills generate large quantities of waste in the form of cellulose-rich paper mill sludge (PMS), which is commonly disposed of in landfills or by incineration. Fermentation was carried out in a shaking water bath at a temperature of 37.5 °C and 80 rpm until gas production ceased. Optimal C/N ratios of 50, 30, and 50 were ...
2024/2/14/ · Manufacturing one ton of paper in a PPI results in approximately 50 kg of dry sludge, of which about 30% and 70% are secondary and primary sludge, respectively. Primary and secondary sludge is composed of an inconsistent mixture of fillers, clay, lignin, and ash, with carbohydrate concentrations ranging from 20% to 75% ( Fan and Lynd, 2007
2016/3/1/ · Overview of the actual and emerging management practices for pulp and paper mill sludge regarding the unknown effects on the greenhouse gas emissions. It is
2022/5/1/ · Since each pulp and paper mill has its own manufacturing process, different input streams, and Experimental design of the semi-continuous AD tests for the co-fermentation of paper sludge in anaerobic digestion MBT plants. The semi-continuous tests were carried out in a mesophilic CSTR AD plant with 12 tank reactors and 3 replicates for
2017/8/1/ · In this study, hydrogen harvesting from fermentation of sugarcane bagasse (SCB) was promoted by maintaining synergism between sulfonated graphene (SGR) catalyst and paper mill sludge (PMS). The sulfonic acid (–SO 3 H) groups in the catalyst played a major role in destructing the β-1,4 glycosidic bonds of sugarcane bagasse, releasing readily
2016/7/1/ · Savings on paper sludge disposal cost consisted of two parts, namely land fill charges of R 705/dry ton and transport costs of R 174/dry ton (Nampak Tissue, 2011). The fermentation of paper sludge reduced disposal costs by 35.1%. The disposal cost reduction was calculated on 22 t/d unwashed paper sludge, which equates to 15 t/d washed sludge.
2024/4/30/ · The relevant studies will provide new sights into sludge fermentation and guidance for sludge disposal. We are inviting research papers and reviews about novel insights on sludge fermentation. The aim of this Special Issue is to provide an insight into the latest findings of sludge fermentation, including the biologically volatile fatty acids
The integration of a microbial electrolysis cell (MEC) is an effective strategy for enhancing the efficiency and stability of an anaerobic digestion (AD) system for energy recovery from waste-activated sludge (WAS). Typically, electrodes are arranged as separate components, potentially disrupting mixing and complicating the reactor configuration, posing challenges
2014/11/15/ · Conclusions. Anaerobic digestion of pulp and paper mill waste at full-scale is currently confined to the treatment of a few selected types of effluent, and the resulting biogas is commonly burned to produce steam and electricity. Full-scale digesters for mill-derived sludges (biosolids) are almost non-existent.