Characterization and fermentation of waste paper sludge for bioethanol production by Sonja Boshoff Thesis presented in partial fulfilment of the requirements for the degree of Paper sludge samples from various paper and pulp mills in South Africa were collected and characterized into categories according to chemical
2020/11/20/ · Sludge, both primary and secondary, is the solid residue following effluent treatment at pulp and paper mills. Primary sludge (PS) is collected at the mill’s primary clarifier and comprises short fibers (fines) that cannot be retained on the paper machine, together with clays and fillers that are lost due to incomplete solid-liquid
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
2016/1/1/ · 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 (SSF). ABE fermentation of paper sludge by Clostridium acetobutylicum required partial removal of ash in PS to enhance its enzymatic digestibility.
2021/8/1/ · Energy and environmental case study conducted on virgin pulp mill has proven the possibility of using paper sludge bioenergy to reduce energy demand by 10%, while reclaiming 82% of the water from the PS, reducing greenhouse gas emissions (GHG) by 3 times and producing solids suitable for land spreading.
2014/10/27/ · With Chamber press, possible achievable DSC varies between 30 and 50 %. Voith Paper has developed Thune which is a new design of screw press used for dewatering pulp and paper mill sludge (Norli and Smedsrud 2006). The trial was conducted at the new Adolf Jass Schwarza mill at Rudolstadt Germany in 2005. The new screw press achieves
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 ...
2024/3/1/ · Palm oil, the main vegetable oil produced globally, serves diverse purposes, ranging from cooking to the production of processed foods, cosmetics, and biodiesel. Despite contributing significantly to the economies of major producing nations, the escalating production of palm oil raises serious environmental concerns, including deforestation,
2020/9/15/ · Pulp and paper mill sludge is a waste generated from the pulp and paper industry and is generally characterised as aggregated losses from chemical and mechanical pulping, which is suspended in wastewater and has a fibrous texture (van Ewijk et al., 2018).Fig. 1 displays an abbreviated outline of the pulp and paper manufacturing process
2020/12/15/ · 1. Introduction. Pulp and paper industries are high priority economic sectors but generate huge quantity of sludge as the ultimate solid waste, recovered after the wastewater treatment process [1].The paper manufacturing units in India generate 40−50 kg of sludge/tonne paper [2].This profuse quantity of paper mill sludge (PMS) is
2014/8/28/ · Paper sludge is an attractive biomass source for the conversion to ethanol due to its low cost and the lack of severe pretreatment required. Four sludges from pulp and paper operations including both virgin kraft (VK) and recycled and deinking (RD) paper mills were analyzed. A fractionation process using a laboratory screen was utilized to produce a
2019/12/2/ · Microbial fuel cells offer a breakthrough for treatment of waste content coupled with energy generation. However, their applications are mostly limited to laboratories. Present research is focused on conducting the biological conversion of sludge originated from fermentation industry using microbial fuel cell (MFC). The efficiency of MFC was studied at
2020/1/1/ · Paper mill sludge (PMS) is a solid by-product produced in the pulp and paper industry. 2013), at 37 °C in an anaerobic chamber. When the OD 600 reached ~1.0, the active seed culture would be inoculated into the bioreactor at a ratio of 5% (v/v) to initiate the fermentation. Fermentations were carried out at 37 °C with pH controlled ≥6.0 ...
2021/6/15/ · Introduction. Paper mill sludge (PMS) is the rejected material generated from digester and paper machines in pulp and paper manufacturing. It is reported that one metric ton paper production gives rise to 40–50 kg dry sludge, and as much as 18.25 and 4–5 million tons of PMS are generated per year worldwide and in the U.S., respectively (de …
2024/4/26/ · A pioneering solution has been developed to convert cellulose fibre-rich waste from pulp and paper mill operations into ethanol using a specialised fermentation process.