A novel pretreatment biotechnology for increasing methane yield from lipid-rich wastewater based on combination of hydrolytic enzymes with <i>Candida rugosa</i> fungus

Asli, Sare; Eid, Rawan; Hugerat, Muhamad

doi:10.1080/10826068.2021.1901233

Cited by 9 publications

(2 citation statements)

References 25 publications

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“…Co-digestion offered a biogas yield of 1.42 m 3 /kgVS, with a methane concentration of 67 ± 4% [107]. Table 2 [108][109][110][111][112][113][114] summarizes the few studies on the application of yeast for biogas production.…”

Section: Yeast Biomass As Feed and Biocatalystsmentioning

confidence: 99%

Yeast-Mediated Biomass Valorization for Biofuel Production: A Literature Review

Ahuja,

Arora,

Chauhan

et al. 2023

Fermentation

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The European Union has recommended that about 10–50% of the global energy requirement should be supplemented by waste biomass resources by 2050 in order to achieve the objective of having net-zero-emission economies. This has led to intensive research being conducted on developing appropriate biofuel production technologies using advanced or integrated systems to tackle local, national, and global energy challenges using waste feedstock. Researchers have realized the potential of microbes (e.g., yeast strains) for bioenergy production. For this paper, both non-oleaginous and oleaginous yeasts were reviewed, with a specific focus being placed on their diversity in metabolism and tolerance to the various challenges that arise from the use of waste feedstock and influence bioprocessing. Gathering in-depth knowledge and information on yeast metabolism has paved the way for newer and better technologies to employ them for consolidated biorefineries to not only produce biofuels but also to cut down process expenses and decrease the risks of net carbon emissions. The rationale for using yeast strains improved by metabolic engineering and genetic manipulation that can substantially meet the challenges of alternate fuel resources is also described in this paper. This literature review presents the advantages and disadvantages of yeast-based biofuel production and highlights the advancements in technologies and how they contrast to conventional methods. Over the last decade, scientific publications have endorsed the idea of biorefineries for environmentally friendly, cost-effective, and sustainable biofuel production.

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Section: Yeast Biomass As Feed and Biocatalystsmentioning

confidence: 99%

Yeast-Mediated Biomass Valorization for Biofuel Production: A Literature Review

Ahuja,

Arora,

Chauhan

et al. 2023

Fermentation

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“…Following the methods of the American Public Health Association described by Asli et al, (2021), the samples were incubated in an orbital shaker incubator (LOM-500-D2) at 25°C for 2 h, homogenized, and assayed for total solids, oil and grease, nitrogen, and chemical oxygen demand (COD) (Table 1).…”

Section: Wastewater Characterizationmentioning

confidence: 99%

Phytotoxic Effects of Treated Wastewater Used for Agricultural Irrigation On Root Hydraulic Conductivity and Plant Growth

Asli¹,

Massalha²,

Hugerat³

2021

Preprint

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AimsTo determine the effects of treated wastewater (TWW) and dialyzed TWW (DTWW) through dialysis tube with a cut-off at 6000-8000 Da, on the water transport characteristics of maize seedlings (Zea mays L). MethodsLaboratory experiments were conducted to determine the effect of TWW on the hydraulic conductivity of excised roots. Moreover, the effect on transpiration, plant growth, root cell permeability and on the plant fresh and dry weight was determined. ResultsPressurized water flow through the excised primary roots was reduced by 25%-52%, within 90 min of exposure to TWW or DTWW. In hydroponics, DTWW affected root elongation severely by 58 %, while cell-wall pore sizes of same roots were little reduced (by 6%). Additionally, the exposure to TWW or DTWW caused inhibition of both leaf growth rate by (26%-70%) and transpiration by (14%-64%). While in soil growth, the plant fresh and dry weight was also significantly affected but not with secondary DTWW. Conclusions These impacts appeared simultaneously to involve phytotoxic and physical clogging impacts. First, the inhibition in hydraulic conductivity through live roots (phytotoxic and physical effects) after exposure to secondary DTWW was by 22%, while through killed roots accepted after hot alcohol disruption of cell membranes (physical effects only); was only by 14%. Second, although DTWW affected root elongation severely by 58%, cell-wall pore sizes of same roots were little reduced by 6%. We conclude that large molecules, such as polypeptides, remained after the dialysis process, may have produced hormone-like activity that affected root water permeability.

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