Agricultural Wastes

Poggi‐Varaldo, Héctor M.

doi:10.2175/106143099x133767

Cited by 10 publications

(7 citation statements)

References 144 publications

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“…The log in the Shannon-Weaver and the Pielou's index should be on base 2, but, in literature there is a variety of bases, such as base 10 and e (natural logarithms) for the calculation of H 0 . It can be shown [48,49] that the H 0 calculated with different logarithm bases can be interconverted as follows…”

Section: Richness and Evenness Estimationmentioning

confidence: 99%

WITHDRAWN: Evaluation of biohydrogen production at ambient temperature from cheese whey and assessment of the associated microbial community

Poggi‐Varaldo

Muñoz-Páez

2015

International Journal of Hydrogen Energy

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Section: Richness and Evenness Estimationmentioning

confidence: 99%

WITHDRAWN: Evaluation of biohydrogen production at ambient temperature from cheese whey and assessment of the associated microbial community

Poggi‐Varaldo

Muñoz-Páez

2015

International Journal of Hydrogen Energy

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“…Wastes from agriculture and the food industry make up a significant portion of global agricultural productivity. It is estimated that this waste may account for more than 30% of global agricultural productivity [10]. Agricultural waste today is very challenging, and many agricultural wastes are present in our environment every day.…”

Section: Agricultural Wastesmentioning

confidence: 99%

Modern Trends in Uses of Different Wastes to Produce Nanoparticles and Their Environmental Applications

Abdelbary¹,

Abdelfattah²

2020

Nanotechnology and the Environment

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Wastes are produced at large amounts all over the world. These wastes cause a variety of problems to the ecosystem, plants, animals, and humans. In this chapter, we discuss the wastes, types of wastes, sources of wastes, and problems related to wastes, especially health-related problems. Then we discuss agricultural wastes and how we can synthesize different nanoparticles from them. Also, we discuss industrial wastes and different nanoparticles synthesized from them. Additionally, we discuss fruit wastes and production of different nanoparticles and also food wastes and their uses in nanoparticle syntheses. Also, we can use other wastes to produce nanoparticles. In applications section, we discuss the use of different nanoparticles produced in agriculture, removal of heavy metals and pollutants from environment, industry and finally medical applications. We will finish our chapter with the topic of healthy and safe synthesis of nanoparticles produced by different wastes and then conclusion.

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“…When dumped to irregular sites and poorly engineered landfills the waste can contribute to global warming by generating methane (CH 4 ) from naturally occurring digestion, as well as health and aesthetic nuisances. Indeed, anaerobic fermentation of wastes is a biological process considered to have a great potential for producing biofuels and bioproducts (Poggi-Varaldo, 1999;Poggi-Varaldo et al, 1999;Reith et al, 2003;Valdez-Vázquez et al, 2005). These components are known as the organic fraction of MSW (OFMSW).…”

Section: Introductionmentioning

confidence: 99%

“…In order to reduce waste, improve management and, at the same time, obtain added-value commercial products, OFMSW, as well as other wastes, can be used in fermentation/digestion processes for biohydrogen and CH 4 generation (Escamilla-Alvarado, 2013;Escamilla-Alvarado et al, 2012). Indeed, anaerobic fermentation of wastes is a biological process considered to have a great potential for producing biofuels and bioproducts (Poggi-Varaldo, 1999;Poggi-Varaldo et al, 1999;Reith et al, 2003;Valdez-Vázquez et al, 2005). A hydrogen (H 2 ) production stage followed by a methanogenic stage (H-M), is basically an acidogenic stage coupled to a methanogenic bioreactor.…”

Section: Introductionmentioning

confidence: 99%

Use of organic waste for the production of added-value holocellulases with Cellulomonas flavigena PR-22 and Trichoderma reesei MCG 80

2013

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We evaluated the production of holocellulases from the cellulolytic microorganisms Cellulomonas flavigena PR-22 and Trichoderma reesei MCG 80 using as substrates the organic fraction of municipal solid waste (OFMSW) and digestates from a hydrogenogenic-methanogenic bioenergy production process. The first set of experiments (E1) used the mutant actinobacteria C. flavigena PR-22 whereas another set (E2) used the mutant filamentous fungi T. reesei MCG 80. In E1 with OFMSW as substrate, xylanolytic activities ranged from 1800 to 3900 international units g(holocellulose)(-1) (IU g(hol)(-1)), whereas the cellulolytic activities ranged from 220 to 420 IU g(hol)(-1). The variation of agitation speed did not have a significant effect on enzyme activity, whereas the increase of substrate concentration had a significant negative effect on both xylanolytic and cellulolytic activities on a holocellulose feed basis. Regarding E2, the OFMSW was evaluated at 1, 2 and 3 % volatile solids (VS). At 2 % VS the best filter paper activities were 1200 filter paper units (FPU) l(-1); however, in a holocellulase basis the best result was 67 FPU g(hol)(-1), corresponding to 1 % VS. Next, OFMSW was compared with OFMSW supplemented with lactose, digested solids from hydrogenogenic fermentation (D1) and digested solids from a two-stage process (D2). Against expectations, no positive effect was found in OFMSW due to lactose. The best enzymatic titres were in the order D1 > OFMSW ≈ OFMSW + lactose > D2. The use of digestates from hydrogenogenic fermentation for enzyme production holds promise for waste management. It promotes energy and added-value bioproduct generation-a green alternative to common practice of management and disposal of organic wastes.

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Agricultural Wastes

Cited by 10 publications

References 144 publications

WITHDRAWN: Evaluation of biohydrogen production at ambient temperature from cheese whey and assessment of the associated microbial community

WITHDRAWN: Evaluation of biohydrogen production at ambient temperature from cheese whey and assessment of the associated microbial community

Modern Trends in Uses of Different Wastes to Produce Nanoparticles and Their Environmental Applications

Use of organic waste for the production of added-value holocellulases with Cellulomonas flavigena PR-22 and Trichoderma reesei MCG 80

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