Fractionation of organic substances during anaerobic digestion of farm wastes for biogas generation

El-Shinnawi, M.M.; El-Tahawy, B. S.; El-Shimi, S.A.; Fahmy, Soheir S.

doi:10.1007/bf01724956

Cited by 7 publications

(2 citation statements)

References 6 publications

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“…Besides its systemic effects, alendronate has also been shown to reduce tooth resorption, graft resorption and alveolar bone loss in the dental fields (5,10,24).…”

Section: Introductionmentioning

confidence: 99%

Comparison of the Effects of Local Application of Hydroxyapatite Graft Soaked with Alendronate Solution and Pure Hydroxyapatite Graft in the Mandible of Ovariectomized Rats

Arslan

Altundal

Çevik

et al. 2011

Biotechnology & Biotechnological Equipment

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“…Besides its systemic effects, alendronate has also been shown to reduce tooth resorption, graft resorption and alveolar bone loss in the dental fields (5,10,24).…”

Section: Introductionmentioning

confidence: 99%

Comparison of the Effects of Local Application of Hydroxyapatite Graft Soaked with Alendronate Solution and Pure Hydroxyapatite Graft in the Mandible of Ovariectomized Rats

Arslan

Altundal

Çevik

et al. 2011

Biotechnology & Biotechnological Equipment

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“…The biphosphonate alendronate has been used effectively with significantly improved clinical and radiographic parameters pertaining to bone mineral density [59,60,61]. Recent reports of osteonecrosis of the jaw with long-term use of biphosphonates in myeloma and breast cancer patients receiving zoledronic acid or pamidronate [62] alerts one to the need for further long-term studies to establish considerations for overall benefits more conclusively.…”

Section: Biphosphonatesmentioning

confidence: 99%

Periodontal Diseases and Rheumatoid Arthritis: A Coincident Model for Therapeutic Intervention?

Soory

2007

CDM

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There are remarkable similarities in the pathogenesis of periodontal diseases and rheumatoid arthritis. The mechanisms that drive antigen induced sequelae of oxidative stress are discussed in this review. A poorly modulated inflammatory response drives both diseases resulting in oxidative stress induced tissue injury. Immune complex formation in response to the periodontal pathogen Porphyromonas gingivalis triggering the production of ROS in both gingivae and synovium of RA patients has been reported. Elevated antibody levels to several periodontal pathogens in RA patients has implications on both RA and periodontal diseases. Periodontal patients are challenged individuals representing a multifactorial aetiopathogenesis with potential for therapeutic intervention in the context of free radical damage. Subjects with moderate to severe periodontal bone loss are significantly more likely than healthy individuals to have several co-existing systemic conditions resulting in ROS mediated damage. There is potential for dual induction of periodontal disease by existing inflammatory mechanisms of systemic diseases rather than exacerbation of low grade inflammation only; emphasizing the relevance of reducing inflammatory burden for disease control. Therapeutic strategies based on disease mechanisms include combined low dose non-steroidal anti-inflammatory drugs and doxycycline for synergistic reduction of matrix metalloproteinase activity in periodontal tissues and RA; sub-optimal dosing with CMT-8 and a biphosphonate clodronate to reduce pathologically elevated levels of MMPs, elastase and to restore alveolar bone in experimental periodontits demonstrating dual applications. Therapeutic interventions relevant to both diseases discussed in this review, have scope for a double hit in periodontal patients with co-existing RA and vice versa.

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Effects of anaerobic digestion on soil carbon and nitrogen turnover, N emissions, and soil biological activity. A review

Möller¹

2015

Agron. Sustain. Dev.

236

139

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Sustainability in agriculture means the inclusion of several aspects, as sustainable agriculture systems must not compromise not only their ability to satisfy future needs by undermining soil fertility and the natural resource base but also sustainable agriculture has had to address a range of other issues including energy use, efficient use, and recycling of nutrients, the effects on adjacent ecosystems including the effects on water bodies and climate change. Organic manures are an important factor to keep the soil fertility level of soils. However, their management is often related to large emissions. In this context, anaerobic digestion is-similarly to composting-a treatment option for stabilization of biogenic wastes leading to a residual product called digestates, enabling the sanitation and the recycling and use as fertilizer. It is also a means to obtain energy from wastes as well as from dedicated energy crops. Therefore, anaerobic digestion potentially addresses several aspects of agricultural sustainability. This review discusses the current state of knowledge on the effects of anaerobic digestion on organic compounds in digestates and the most important processes influencing N emissions in the field, as well as the possible longterm effects on soil microbial biomass and soil fertility. The main findings are that (1) the direct effects of anaerobic digestion on long-term sustainability in terms of soil fertility and environmental impact at the field level are of minor relevance. (2) The most relevant effects of anaerobic digestion on soil fertility as well as on N emissions will be expected from indirect effects related to cropping system changes such as changes in crop rotation, crop acreage, cover cropping, and total amounts of organic manures including digestates. Furthermore, (3) the remaining organic fraction after anaerobic digestion is much more recalcitrant than the input feedstocks leading to a stabilization of the organic matter and a lower organic matter degradation rate after field application, enabling a similar reproduction of the soil organic matter as obtained by direct application of the feedstock or by composting of the feedstock. (4) Regarding emissions, the main direct effect of anaerobic digestion on a farm level is the influence on gaseous emissions during manure or digestate treatment and handling, whereas the direct effects of anaerobic digestion on a field level on emissions (NH 3 − and N 2 O − emissions, NO 3 -leaching) are negligible or at least ambiguous. (5) The main direct effects of anaerobic digestion on the field level are short-term effects on soil microbial activity and changes in the soil microbial community. Therefore, in terms of the effects on agricultural sustainability, potential cropping system-based changes induced by introduction of biogas plants are probably much more relevant for the overall performance and sustainability of the cropping system than the direct effects triggered by application of digestates in comparison to the undigested feedstock...

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Fractionation of organic substances during anaerobic digestion of farm wastes for biogas generation

Cited by 7 publications

References 6 publications

Comparison of the Effects of Local Application of Hydroxyapatite Graft Soaked with Alendronate Solution and Pure Hydroxyapatite Graft in the Mandible of Ovariectomized Rats

Comparison of the Effects of Local Application of Hydroxyapatite Graft Soaked with Alendronate Solution and Pure Hydroxyapatite Graft in the Mandible of Ovariectomized Rats

Periodontal Diseases and Rheumatoid Arthritis: A Coincident Model for Therapeutic Intervention?

Effects of anaerobic digestion on soil carbon and nitrogen turnover, N emissions, and soil biological activity. A review

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