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Influence of pretreatment and pH on the enhancement of ...

Feb 04, 2020  The purpose of this study was to evaluate the best pretreatment among the three different pretreatment methods used for the inoculums, along with the evaluation of 3

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Influence of pretreatment and pH on the enhancement of ...

Influence of pretreatment and pH on the enhancement of hydrogen and volatile fatty acids production from food waste in the semi-continuously running reactor Author

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Influence of pretreatment and pH on the enhancement of ...

Influence of pretreatment and pH on the enhancement of hydrogen and volatile fatty acids production from food waste in the semi-continuously running reactor

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Optimization of NaOH pretreatment for enhancement of ...

NaOH Pretreatment Effect. pH variation of samples during the NaOH pretreatment. The pH values of the samples were measured during the NaOH pretreatment and

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Effect of various pretreatment methods on anaerobic mixed ...

Jan 01, 2008  Experiments were designed to evaluate the influence of various pretreatment methods on anaerobic inoculum to enhance H 2 production efficiency utilizing dairy

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Optimization of NaOH pretreatment for enhancement of ...

NaOH Pretreatment Effect. pH variation of samples during the NaOH pretreatment. The pH values of the samples were measured during the NaOH pretreatment and are shown in Fig. 3. For all samples, the pH values actually declined with pretreatment time (Fig. 3a), likely due to the consumption of OH – (Chandra et al. 2012; Zheng et al. 2009 ...

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Ionisation and the effect of absorption enhancers on ...

Purpose: to investigate if salicylic acid (SA)-permeation through excised human skin (HS) and silastic rubber (SR) conforms to the pH-hypothesis and to assess the influence of a range of absorption enhancers on the transport of SA with and without a transmembrane pH-gradient. Methods: Franz cells were used to study SA permeation from solutions and saturated suspensions.

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Effect of pH and penetration enhancers on electroosmotic ...

Dec 05, 2012  Effect of pH. The influence of the solution pH on the iontophoretic flux of AAP is shown in Figs. 3, 4 and 5. At pH 7.4, passive flux was about 5 μg/cm 2 h for the duration of experiment (Fig. 3). In case of anodal delivery, AAP flux increased continuously until the current was off. The highest flux value was 134 μg/cm 2 h.

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The effect of ultrasonic pre-treatment on the catalytic ...

Jan 30, 2008  The effect of ultrasonic pre-treatment (at various power ratings) on lipase stability in acetonitrile. pH tuned lipase (1 mg) in acetonitrile (100 μl) was ultrasonicated at various power ratings (i.e. 110 W, 66 W and 44 W) continually. In this study, we carried out ultrasonication for 5 minutes, followed by a break of 10 minutes between each ...

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Effect of ozonolysis and thermal pre-treatment on rice ...

Effect of pre-treatment on VFAs and TRS generation. Th treatment of lignocellulosic biomass is usually carried out in the temperature range of 160–200 °C, while the thermal pre-treatment of the wastewater sludge at 55 °C has showed reduction in the pathogenic microbial load with the enhancement in

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Biomass Pretreatment for Enhancement of Biogas Production ...

Jan 18, 2019  This chapter concludes the effect of various biomass pretreatment for enhancement of biogas production and the future challenges for an energy efficient and eco-friendly manner. Therefore, optimizing the pretreatment conditions in order to lower production costs, improving the process performance and production of fewer residues is needed.

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(PDF) Enhancement of biogas production from pineapple ...

May 14, 2020  pretreatment to 866.75 and 258.82 L/ kg of V S for the acid-alkaline pretreatment at pH 7 and 9, respectively shown in figure 5 . Increasing gas production at pH 7

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Effect of pretreatment on the bioadsorption of heavy ...

Effect of pretreatment on the bioadsorption of heavy metals ... alkali and organic chemicals showed enhancement or reduction in ... pH of the wash solution was in near neutral range (pH 6.8 to 7.2

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Optimization strategies of alkaline thermo-chemical ...

The combined effect of both temperature and time being less significant than the other interactional effects. Fig. 6(b) illustrates the effect of pretreatment temperature and NaOH concentration on biogas response. Download : Download high-res image (1MB) Download : Download full-size image; Fig. 6.

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Enhancement of biogas production in anaerobic co-digestion ...

After alkali hydrogen peroxide pretreatment, microaerobic pretreatment, NaOH pretreatment, HCl pretreatment and hot water pretreatment the methane yields of

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(PDF) Effects of pretreatment methods on cassava ...

Results of batch contrast, pH 7 is favorable in terms of H2 for OPTIMASH BGÒ experiments show that OPTIMASH BGÒ pretreatment of cassava regardless of concentration, and the highest H2 volume was recor- wastewater at pH 4 shows negligible (0.09 mol H2/g COD for 0.20% ded at pH 7 for 0.20% OPTIMASH BGÒ with 4.24 mol H2/g COD.

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Insight into understanding the performance of ...

The effect of hydrothermal pretreatment (HTP) and alkaline thermal pretreatment (TA) at mild temperature in the solid state was comparatively studied, through the analysis of physicochemical ...

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Effect of innovative ultrasonic frequency excitation modes ...

Sep 08, 2021  Fig. 5 shows the effect of ultrasonic pretreatment with different frequency modes on the UV–vis spectra of RP. The characteristic absorption at 259 nm may be attributed to the interaction of tyrosine (275 nm), tryptophan (279 nm), and phenylalanine (257 nm), and the hydrophobic amino acids are usually buried in hydrophobic protein ( Grimsley ...

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IJMS Free Full-Text Advances in Chitosan-Based ...

They studied the enhancement of the CS/TPP particle stability at physiological ionic strengths, using 150 mM NaCl (pH 5.5) and PBS (pH 6.0) as the dissolution media when associating the CS/TPP particles with model anionic proteins (α-lactalbumin, α-LA, and bovine serum albumin, BSA) and

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Influence of the pH,Pretreatment and Hydraulic Retention ...

Influence of the pH,Pretreatment and Hydraulic Retention Time on the Enhancement of the Biohydrogen and Volatile Fatty Acids Production from Food

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Effect of pH and penetration enhancers on electroosmotic ...

Dec 05, 2012  Effect of pH. The influence of the solution pH on the iontophoretic flux of AAP is shown in Figs. 3, 4 and 5. At pH 7.4, passive flux was about 5 μg/cm 2 h for the duration of experiment (Fig. 3). In case of anodal delivery, AAP flux increased continuously until the current was off. The highest flux value was 134 μg/cm 2 h.

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Polymers Free Full-Text Effect of Pre-Corrected pH on ...

The content of PCs decreased by 33.78% during pre-corrected pH hydrothermal pretreatment (pH 4.0) compared to that during traditional hydrothermal pretreatment (pH 3.5). Thus, the dissolution and degradation of lignin was maximally inhibited, while hemicellulose was heavily extracted at pH 4.0 by 170 °C pre-corrected pH hydrothermal pretreatment.

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(PDF) Biodegradability enhancement and pre-treatment of ...

Influence of wastewater pH on COD removal by EFP (current density = 10 m Acm -2 , H 2 O 2 concentration = 10 mM, and reaction time = 30 min).

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(PDF) Enhancement of biogas production from pineapple ...

May 14, 2020  pretreatment to 866.75 and 258.82 L/ kg of V S for the acid-alkaline pretreatment at pH 7 and 9, respectively shown in figure 5 . Increasing gas production at pH 7

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(PDF) Effect of Pre-Corrected pH on the Carbohydrate ...

Effect of pH on xylo units in pre-co rrected pH hydrothermal pretreatment. Figure 3 shows the contents of xylose, xylo-oligomers, and total xylose in the hydrolysates. The

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Enhancement of sludge anaerobic biodegradability by ...

Mar 30, 2016  Effect of pH. The pH of the MW + H 2 O 2-pretreated sludge was found to be in the range of 9.5 to 10. The increment in pH after pretreatment was because of the formation of ammonia (produced by the degradation of protein) (Luo et al. 2011). A similar observation was found by Uma et al. . This highly alkaline nature of pretreated sludge makes it ...

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(PDF) Effect of Ozone Pretreatment on Biodegradability ...

May 22, 2015  The study evaluates the effect of ozone pretreatment on biodegradability enhancement of biomethanated distillery effluent. Results revealed that ozone pretreatment led to biodegradability index ...

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Enhancement of biogas production from organic fraction of ...

Jul 28, 2020  Pretreatment with HCl at pH 6 led to reduction in cellulose content by 5.3%, whereas 33.8% reduction was obtained after pretreatment at pH 1. In case of CH 3 COOH pretreatment, 1.5% reduction in cellulose was observed after pretreatment at pH 6, while pretreatment at pH 1 yielded 31.3% reduction in cellulose. Hemicellulose, on the other hand ...

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Biochemical Methane Potential Tests to Evaluate Anaerobic ...

Jul 16, 2019  This study evaluates the effects of thermal hydrolysis (TH) pretreatment on anaerobic digestion (AD), through results obtained by biochemical methane potential (BMP) tests under mesophilic conditions (35 °C). Thickened sludge from a wastewater treatment plant (WWTP) was thermally treated under two different temperatures (150 and 170 °C) and reaction times (30 and 60 min). Results show

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Effect of pH on inhibition and enhancement of luminol-H2O2 ...

The effect of pH on inhibition and enhancement of luminol-H2O2-Co2+ chemiluminescence (CL) by 18 phenolic compounds and 20 amino acids was studied. It was found that most of the tested compounds showed an inhibiting effect at lower pH and an enhancing effect at higher pH. At a midrange pH

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Lignosulfonate and elevated pH can enhance enzymatic ...

Jan 28, 2013  The elevated pH study was conducted with the application of SPORL pretreatment hydrolysate for further enhancement of saccharification efficiency. This work lays the foundation for direct simultaneous enzymatic saccharification and combined fermentation (SSFCombF) of the whole lignocellulosic slurry at high solids loadings without a separation ...

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(PDF) Enhancement of nortriptyline penetration through ...

The maximum enhancement effect was obtained with 1-dodecanol, which had a log P oct value of 5.4, the closest to nortriptyline (log P oct = 4.7). Accordingly, it seemed that 1-dodecanol inserted into lipid bilayers of skin modified its nature and created an environment of lipophilicity very similar to that of nortriptyline, thus increasing the ...

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Enhancement of Delignification by Ionic Liquids ...

Enhancement of Delignification by Ionic Liquids ... dosage, pH value in the range 2 to 3, 70 °C for 30 min in chlorine dioxide stage (D), 12 kg/t pulp of H 2 O 2 dosage, 5 wt.% of NaOH dosage for adjusting pH ... Effect of ILs Pretreatment on the Chemical Compositions and the

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