Waste paper valorization for bioethanol production: Pretreatment and acid hydrolysis optimization

Tadmourt, Wahiba; Khiari, Karim; Boulal, Ahmed; Tarabet, Lyes

doi:10.1080/15567036.2020.1815908

Cited by 10 publications

(6 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the yield of reducing sugar obtained from vegetable wastes in this study was relatively less compared to the yield of reducing sugar obtained from cauliflower waste (0.48-0.62 g/g) by pretreating using 4% (v/v) phosphoric acid followed by heat treatment at 121°C for 1 h [31]. Tadmourt et al [32] has reported that paper waste when acid hydrolyzed at 96.31°C for 20.64 min with 1% H 2 SO 4 (v/v), yielded 79.65% (w/v) of total sugars. The variations in reducing sugar yields could be due to the use of different waste compositions and pretreatment conditions [32].…”

Section: Pretreatment Of Waste Samplesmentioning

confidence: 57%

“…Tadmourt et al [32] has reported that paper waste when acid hydrolyzed at 96.31°C for 20.64 min with 1% H 2 SO 4 (v/v), yielded 79.65% (w/v) of total sugars. The variations in reducing sugar yields could be due to the use of different waste compositions and pretreatment conditions [32]. Khattab et al (2020) pretreated sugar beet wastes with different concentrations (0.5-3%) of H 2 SO 4 followed by heat treatment using autoclaving and found that cellulose contents were completely hydrolyzed at all acid treatments.…”

Section: Pretreatment Of Waste Samplesmentioning

confidence: 99%

See 1 more Smart Citation

Multi-objective optimization for biomass and lipid production by oleaginous bacteria using vegetable waste as feedstock

Patnaik

Saravanabhupathy

Singh

et al. 2021

Environmental Engineering Research

View full text Add to dashboard Cite

In this study, pretreated organic wastes such as waste paper cups, cardboard waste, and vegetable waste were screened for the growth and lipid production of oleaginous bacteria DS-7 (isolated from the dairy effluent scum). The pretreated vegetable waste was found to be the best feedstock for biomass and lipid production by the DS-7. Further, process parameters such as inoculation time, substrate concentration (w/v) (amount of pretreated vegetable waste), pH, and inoculum size were optimized using a multi-objective optimization technique to enhance the biomass and lipid productions. The optimization study successfully enhanced the biomass concentration (g/L) and lipid content (%) by 47.9% and 15.84%, respectively in comparison with the unoptimized state. The biomass and lipid productivities were 42% (1.449 g/L/d) and 51% (1.267 g/L/d) greater than unoptimized conditions. The characteristics of the biodiesel obtained from the valorization of vegetable waste were comparable to the standard. Thus, the vegetable waste can be utilized as a potential feedstock for microbial biodiesel production.

show abstract

Section: Pretreatment Of Waste Samplesmentioning

confidence: 57%

Section: Pretreatment Of Waste Samplesmentioning

confidence: 99%

Multi-objective optimization for biomass and lipid production by oleaginous bacteria using vegetable waste as feedstock

Patnaik

Saravanabhupathy

Singh

et al. 2021

Environmental Engineering Research

View full text Add to dashboard Cite

show abstract

“…This was quite expected because the metabolic activity of yeasts caused the pH to decrease and made the medium more acidic due to the release of organic acids following the degradation of sugars. (Mehani, Boulal, and Bouchekima, 2013 ;Tadmourt et al, 2020). It was shown that the musts of the date palm have an acidic pH.…”

Section: Results Of the Physicochemical Analysis During Fermentationmentioning

confidence: 97%

“…It ought to be mentioned that mineral salts are essential elements in the fermentation process. (Tadmourt et al, 2020).…”

Section: Mineral Salt Levelsmentioning

confidence: 99%

Valorization of Balanites Aegyptiaca Fruits by Production of Bioethanol: Study and Optimization

Hadri¹,

Cheikh²,

Ammar³

et al. 2022

CTNS

Self Cite

View full text Add to dashboard Cite

This work is part of the diversification of renewable energy sources such as biomass. The present research aims to concentrate on the valorization of desert date fruits, i.e. Balanites aegyptiaca. To the best of our knowledge, this plant has never been valorized in Algeria so far. For this, it was decided to choose one part of these fruits, namely the pulp, as a substrate for anaerobic fermentation for the production of bioethanol, which was shown to have a fairly significant added value. The results of the morphological analyses of the fruits of the desert palm indicated that the pulp represents 62.71% of the entire fruit, which is quite encouraging for the completion of the present work. It should be noted that the pulp is the most important ingredient in the fermentation process to produce alcohol. Moreover, the physicochemical characteristics of the raw material showed that the pulp of the fruits of the desert palm tree are rich in sugar, with 59.68% of total sugars and 34.18% of reducing sugars. Note also that these sugars are essential elements for alcoholic fermentation. The results obtained indicated that the optimal dilution of 1/4.4 (g / mL) gives 30% bioethanol (125 g of fruit gives 30 ml of bioethanol with 92° concentration).

show abstract

“…A previous study (Tadmourt et al 2020) showcased the optimized acid hydrolysis of wastepaper to produce bioethanol and ensured the purity degree of 90% (v/v) (Tadmourt et al 2020). The previous study presented a brief review of the current condition of wastepaper for bioethanol production.…”

Section: Introductionmentioning

confidence: 99%

Enzymatic hydrolysis by Trichoderma reesei of diluted acid-pretreated wastepaper for bioethanol production

Hossain

Hoong

Barua

et al. 2021

Preprint

View full text Add to dashboard Cite

Enzymatic hydrolysis of waste biomass for bioethanol production is considered a traditional, inexpensive, and energy-effective approach decades ago. In the present study, waste office paper was pretreated with diluted sulfuric acid (H2SO4) and hydrolysed with one of the most available and cost-effective enzymes, cellulase from Trichoderma reesei, under submerged static condition. Wastepaper size was reduced to 2cm2, blended with water and dry wet-blended, and pretreated with diluted H2SO4. Among different concentrations (0.5M, 1.0M, 1.5M, 2.0M) of H2SO4, the maximum glucose content was obtained at 2.0M H2SO4 at 90 min reaction time, and glucose yield was 0.11g glucose/g wastepaper. The cut paper, wet-blended, and acid-treated wastepaper was hydrolysed with cellulase enzyme for 2, 4, and 5 consecutive days with 5mg, 10mg, 15mg, and 20mg enzyme loadings. The maximum glucose content was obtained, 9.75g/l after 5 days of enzymatic hydrolysis with 20mg enzyme loading and a glucose yield of a 0.5g glucose/g wastepaper. The wastepaper hydrolysate was further fermented for 6, 8, and 10 hours continuously with Saccharomyces cerevisiae (yeast), and at 10 hours of fermentation, the maximum glucose consumption was 0.18g by yeast. Later, HPLC analysis of the fermented medium presented a strong peak of bioethanol content at 16.12min. Further, the distillation of bioethanol by rotary evaporator presented 0.79ml bioethanol/fermented solution, which indicated the conversion efficiency of 79%.

show abstract

Waste paper valorization for bioethanol production: Pretreatment and acid hydrolysis optimization

Cited by 10 publications

References 43 publications

Multi-objective optimization for biomass and lipid production by oleaginous bacteria using vegetable waste as feedstock

Multi-objective optimization for biomass and lipid production by oleaginous bacteria using vegetable waste as feedstock

Valorization of Balanites Aegyptiaca Fruits by Production of Bioethanol: Study and Optimization

Enzymatic hydrolysis by Trichoderma reesei of diluted acid-pretreated wastepaper for bioethanol production

Contact Info

Product

Resources

About