Thermal-alkaline pretreatment of polyacrylamide
Request PDF | On Feb 1, 2025, Xuran Liu and others published Thermal-alkaline pretreatment of polyacrylamide flocculated waste activated sludge: Process optimization and effects on anaerobic
In this study, simultaneous mitigation of PAM negative effects and improvement of methane production was accomplished by thermal-alkaline pretreatment. Under the optimized pretreatment conditions (i.e., 75 °C, pH 11.0 for 17.5 h), the biochemical methane potential of PAM-flocculated sludge increased from 100.5 to 210.8 mL/g VS and the
Thermal-alkaline pretreatment of polyacrylamide
Thermal-alkaline pretreatment of polyacrylamide flocculated waste activated sludge: Process optimization and effects on anaerobic digestion and polyacrylamide degradation Author links open overlay panel Xuran Liu a b Qiuxiang Xu a b Dongbo Wang a b Qi Yang a b Yanxin Wu a b Yifu Li a b Qizi Fu a b Fan Yang c Yiwen Liu d Bing-Jie Ni d Qilin Wang
All of Griffith Research Online. Communities & Collections; Authors; By Issue Date; Titles; This Collection
Thermal-alkaline pretreatment of polyacrylamide flocculated
Thermal-alkaline pretreatment of polyacrylamide flocculated waste activated sludge: Process optimization and effects on anaerobic digestion and polyacrylamide degradation Bioresource Technology ( IF 6.669) Pub Date : 2025-02-22, DOI: 10.1016/j.biortech.2025.02.095
Compared with the other pretreatment methods such as alkaline-high pressure homogenization (0.04 mol NaOH/L, 60 MPa, one homogenization cycle), thermal-alkaline (75 ℃, pH 11.0 for 17.5 h), the microwave pretreatment (2450 MHz, 800 W, 500 mL sludge, 12 min) used in this study achieved the great effectiveness in improving sludge disintegration
Effects of Thermal-Alkaline Pretreatment on Solubilisation
Alkaline pretreatment is often combined with thermal pretreatment for WAS solubilisation, as the combined pretreatment reduces the required quantity of alkaline and energy (Shehu et al. 2012). The synergistic effects of thermal-alkaline pretreatment have been reported on WAS
Of the polyacrylamide exposure categories, consumers of potable water (4.5 x 106 to 30 x 106 persons) treated with polyacrylamide flocculants are potentially exposed to acrylamide levels of up to 0.5 ppb in the water, or 1.4 x 10"5 mg/kg/day.
Glycosylated amyloid‐like proteins in the structural
Glycosylation seems to make the proteins more chemical and thermal resistant. In the extracted EPS, the non‐glycosylated protein fragments were released after 10‐min denaturation pretreatment, while the glycosylated protein fragments were released only after 60‐min pretreatment.
Cellulases catalyze the hydrolysis of cellulose. Improving their catalytic efficiency is a long-standing goal in biotechnology given the interest in lignocellulosic biomass decomposition. Although
Discovery and Characterization of a Thermostable
With the ultimate goal of identifying robust cellulases for industrial biocatalytic conversions, we have isolated and characterized a new thermostable and very halotolerant GH5 cellulase. This new enzyme, termed CelDZ1, was identified by bioinformatic analysis from the genome of a polysaccharide-enrichment culture isolate, initiated from material collected from an Icelandic hot spring.
This work provides a critical overview of the recent trends toward the development of modern, dissolving pulp production technologies that respond to the current challenges and opportunities for the emerging low-carbon bioresource economy. Special attention is paid to recent advancements in prehydrolysis kraft pulping and conversion of paper grade pulp to dissolving pulp, with emphasis on the
