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
2021/6/15/ · Paper mill sludge (PMS) raises critical environmental issues due to its disposal problem, but its high sugar content and well-dispersed structure make it a great feedstock for biochemical production. The technical feasibility of integrating cellulase enzyme production into lactic acid (LA) fermentation from PMS was investigated in this study.
2011/9/29/ · Background Ethanol production from paper sludge (PS) by simultaneous saccharification and fermentation (SSF) is considered to be the most appropriate way to process PS, as it contains negligible lignin. In this study, SSF was conducted using a cellulase produced from PS by the hypercellulase producer, Acremonium cellulolyticus C-1 for PS
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
2019/7/15/ · Characterization of solid wastes is an important to analysis of the final disposal. •. Chemical, thermal, mineral, physical and environmental conditions were evaluated. •. Waste from the paper industry is classified as non-inert non-harmful; •. The best disposal methodology from the paper industry waste is sanitary landfills.
2016/1/1/ · After each cycle of water washing, the ash content in paper mill sludge was reduced gradually to 25.1%, 20.5% 12.3% and 6.1% in PS2, PS4, Discussion. Paper mill sludge was utilized directly as feedstock for butanol production via simultaneous saccharification and fermentation.
2023/8/20/ · A sustainable industrial future involves the exploitation of renewable resources to obtain a wide diversity of products and energy and the decrease of waste generation. Primary sludge (PS) from pulp and paper mills is a lignocellulosic residue mainly consisting of cellulose and hemicelluloses that can be converted to bioethanol. In the
2024/1/2/ · Paper mill sludge (PMS) is an attractive and low-cost substrate of fermentable sugars, mainly glucose, and its valorization for bio-fuel production has been reported [7]. (UASBR) to convert complex compounds into biofuel would combine the advantages of the completely stirred tank reactor (CSTR) and up-flow anaerobic sludge
2022/5/1/ · 1. Introduction. Pulp and paper mills produce large quantities of paper sludge, which is the main organic residue generated by wastewater treatment in the pulp and paper industry and can cause major environmental problems (Faubert et al., 2016, Likon and Trebe, 2012).Around the globe approximately 400 million tons of paper and cardboard are
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
Paper sludge with a high ash content has been reported to have an additional advantage for butanol fermentation, while other studies have found that kraft paper mill sludge requires a partial removal of ash to enhance its enzymatic digestibility in ABE fermentation using C. acetobutylicum (Yang et al. 2013; Gottumukkala et al. 2016; Guan et al
2014/11/27/ · Primary sludge is a lignocellulosic residue from pulp and paper mills consisting of cellulosic fibers and ash. However, the high ash content (35%, mainly CaCO 3) and pH value affect the enzymatic hydrolysis of cellulosic fibers.Several pretreatments were used to reduce the CaCO 3 content and to adjust the pH. Enzymatic hydrolysis of primary
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. The utilization of this waste is commonly inundated with low product yields due to high ash content, which results in decreased enzymatic hydrolysis ( Tawalbeh et al., 2021 ).
2020/8/1/ · According to overburden studies, the hydraulic conductivity of the paper mill sludge originating from a paper mill in Northern Finland at a pressure of 30 kPa was 4.4×10-10m s-1, and 1.7×10-10m
2015/1/1/ · Recycled paper mill primary sludge at 5 kg m −3 appeared to be a suitable carbon source for fermentation with C. thermocellum. One step fermentation directly from this cellulosic substrate produced ethanol (11.3 mol m −3) and hydrogen (11.2 mol m −3).. Cellulase activity in supernatant was 0.25 U cm −3 and cellulose present in sludge was …