Dual production of hydrogen and biochar from industrial effluent containing phenolic compounds

Nasr, Mahmoud; Tawfik, Ahmed; Awad, Hanem M.; Galal, Aida; El-Qelish, Mohamed; Qyyum, Muhammad Abdul; Khan, Muhammad Mumtaz Ali; Rehan, Mohammad; Nizami, Abdul-Sattar; Lee, Moonyong

doi:10.1016/j.fuel.2021.121087

Cited by 42 publications

(6 citation statements)

References 41 publications

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“…32 As a matter of fact, the liquid fraction of digestate is usually used in agriculture with a high environmental impact. The spray of liquid digestate can result in groundwater contamination, 33 ammonia volatilization, and nutrient loss in soil, as well as soil contamination with heavy metals and pathogens present in the liquid fraction. Differently, the solid digestate fraction can be easily stored, transported, or converted into biochar, nanocellulose, or used as a biofertilizer.…”

Section: ■ Discussionmentioning

confidence: 99%

Solid-State Fermentation of Trichoderma spp.: A New Way to Valorize the Agricultural Digestate and Produce Value-Added Bioproducts

Bulgari

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Peron

et al. 2023

J. Agric. Food Chem.

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In this study, the agricultural digestate from anaerobic biogas production mixed with food wastes was used as a substrate to grow Trichoderma reesei RUT-C30 and Trichoderma atroviride Ta13 in solid-state fermentation (SSF) and produce highvalue bioproducts, such as bioactive molecules to be used as ingredients for biostimulants. The Trichoderma spp. reached their maximum growth after 6 and 3 SSF days, respectively. Both Trichoderma species were able to produce cellulase, esterase, and citric and malic acids, while T. atroviride also produced gibberellins and oxylipins as shown by ultraperformance liquid chromatography with quadrupole time-of-flight mass spectrometry (UPLC-QTOF-MS) profiling. Experimental evaluation of germination parameters highlighted a significant promotion of tomato seed germination and root elongation induced by T. atroviride crude extracts from SSF. This study suggests an innovative sustainable use of the whole digestate mixed with agro-food waste as a valuable substrate in fungal biorefineries. Here, it has been applied to produce plant growth-promoting fungi and bioactive molecules for sustainable agriculture.

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Section: ■ Discussionmentioning

confidence: 99%

Solid-State Fermentation of Trichoderma spp.: A New Way to Valorize the Agricultural Digestate and Produce Value-Added Bioproducts

Bulgari

Alias

Peron

et al. 2023

J. Agric. Food Chem.

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“…Digestate products could be easily utilized for agricultural economic crops due to its richness in nutrients and minerals (Ai et al 2020;Jin et al 2022). However, the digestate still has a high concentration of nutrients, heavy metals, elements, emerging pollutants and pathogenic bacteria, which need to be removed for safe reuse (Nasr et al 2021) (Fig. 2).…”

Section: Digestate Types Sources and Characterizationmentioning

confidence: 99%

“…The inorganic carbon sources are mainly bicarbonate (939-1353 mg/L) in the digestate. The liquid anaerobic digestate also contains macronutrients (potassium, manganese, sulfur) and micronutrients (iron, nickel, cobalt, zinc, and cupper) (Nasr et al 2021).…”

Section: Digestate Types Sources and Characterizationmentioning

confidence: 99%

Cultivation of microalgae on liquid anaerobic digestate for depollution, biofuels and cosmetics: a review

et al. 2022

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Solid wastes from domestic, industrial and agricultural sectors cause acute economic and environmental problems. These issues can be partly solved by anaerobic digestion of wastes, yet this process is incomplete and generates abundant byproducts as digestate. Therefore, cultivating mixotrophic algae on anaerobic digestate appears as a promising solution for nutrient recovery, pollutant removal and biofuel production. Here we review mixotrophic algal cultivation on anaerobic waste digestate with focus on digestate types and characterization, issues of recycling digestate in agriculture, removal of contaminants, and production of biofuels such as biogas, bioethanol, biodiesel and dihydrogen. We also discuss applications in cosmetics and economical aspects. Mixotrophic algal cultivation completely removes ammonium, phosphorus, 17β-estradiol from diluted digestate, and removes 62% of zinc, 84% of manganese, 74% of cadmium and 99% of copper.

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“…Those VFAs fractions were further photosynthetically biodegraded by Rhodospirillaceae for biohydrogen generation. The protein and carbohydrate degradation by anaerobes immobilized on magnetite nanoparticles into VFAs and H 2 were significantly improved 1.4-and 2.1-fold as reported by [56]. The magnetite nanoparticles addition enhanced the microbial proteases' enzyme activities and ensured the hydrolysis of wastewater-rich proteins [57].…”

Section: Volatile Fatty Acids Concentrationmentioning

confidence: 72%

Recent Approaches for the Production of High Value-Added Biofuels from Gelatinous Wastewater

et al. 2021

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Gelatin production is the most industry polluting process where huge amounts of raw organic materials and chemicals (HCl, NaOH, Ca2+) are utilized in the manufacturing accompanied by voluminous quantities of end-pipe effluent. The gelatinous wastewater (GWW) contains a large fraction of protein and lipids with biodegradability (BOD/COD ratio) exceeding 0.6. Thus, it represents a promising low-cost substrate for the generation of biofuels, i.e., H2 and CH4, by the anaerobic digestion process. This review comprehensively describes the anaerobic technologies employed for simultaneous treatment and energy recovery from GWW. The emphasis was afforded on factors affecting the biofuels productivity from anaerobic digestion of GWW, i.e., protein concentration, organic loading rate (OLR), hydraulic retention time (HRT), the substrate to inoculum (S0/X0) ratio, type of mixed culture anaerobes, carbohydrates concentration, volatile fatty acids (VFAs), ammonia and alkalinity/VFA ratio, and reactor configurations. Economic values and future perspectives that require more attention are also outlined to facilitate further advancement and achieve practicality in this domain.

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Dual production of hydrogen and biochar from industrial effluent containing phenolic compounds

Cited by 42 publications

References 41 publications

Solid-State Fermentation of Trichoderma spp.: A New Way to Valorize the Agricultural Digestate and Produce Value-Added Bioproducts

Solid-State Fermentation of Trichoderma spp.: A New Way to Valorize the Agricultural Digestate and Produce Value-Added Bioproducts

Cultivation of microalgae on liquid anaerobic digestate for depollution, biofuels and cosmetics: a review

Recent Approaches for the Production of High Value-Added Biofuels from Gelatinous Wastewater

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