Lactic acid fermentation of human urine to improve its fertilizing value and reduce odour emissions

Andreev, Nadejda; Ronteltap, Mariska; Boincean, Boris; Wernli, Markus; Zubcov, Elena; Bagrin, Nina; Borodin, N.V.; Lens, Piet N.L.

doi:10.1016/j.jenvman.2017.04.059

Cited by 37 publications

(23 citation statements)

References 57 publications

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“…The plausible reason we deduced for the observed effect was that the hydrolysed urine contributed to the stable reactor performance as a buffering agent. Indeed, the hydrolysed urine has a high buffering capacity (Andreev et al, 2017) and therefore minimized the inhibitory effect of accumulated VFAs to the methanogens (Nicol et al, 2004;Franke-Whittle et al, 2014;Eduok et al, 2017). Although acid pre-treatment is a low cost and efficient process in hemicellulose hydrolysis to release monomeric sugars, corrosive and toxic compounds are produced (Talebnia et al, 2010;Ferreira et al, 2013), whereas alkaline pre-treatment of lignocellulosic biomass with hydroxides of ammonia, potassium, calcium and sodium modifies the structure and solubilize lignin with minimal inhibition of biogas production (Ferreira et al, 2013;Krishania et al, 2013).…”

Section: Effect Of Urine Buffer On Biogas Production and Phmentioning

confidence: 99%

“…In terms of composition in the domestic sewage, urine supplies approximately 70-80% of the nitrogen, 50-70% of the phosphorus, and 60-70% of the pharmaceutical loadings (Jimenez et al, 2015). In recent years, however, there is increased understanding that the composition of source separated urine suggests it can serve as nutrient and growth inducer for plant and microorganisms (Larsen et al, 2004;Akpan-Idiok et al, 2012;Andreev et al, 2017). Further to this, urine source separation commonly called NoMix-technology in urban wastewater management is accepted as innovative approach to increase water quality, reduce pharmaceutical loadings, and enhance nutrient recovery (Lienert and Larsen, 2010;Ekama et al, 2011;Jimenez et al, 2015;Landry and Boyer, 2016).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Enhanced Biogas Production From Anaerobic Co-digestion of Lignocellulosic Biomass and Poultry Feces Using Source Separated Human Urine as Buffering Agent

Eduok

John

Ita

et al. 2018

Front. Environ. Sci.

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Effect of source separated human urine as buffering agent compared to sodium bicarbonate and water in anaerobic co-digestion of lignocellulosic biomass and poultry feces was evaluated in laboratory scale reactor for 180 days at 37 ± 2 • C. Mean biogas volume ranged from 37 ± 8 to 101 ± 18 mL gVS −1 in the urine buffered reactors which was 1-5 times higher than the bicarbonate and water buffered reactors and the difference was significant at p = 0. 05. Total volatile fatty acids (VFA) concentration ranged between 396 and 1,400 mg L −1 with a pH of 6.9 ± 0.3 and 7.8 ± 0.1, respectively. In contrast, VFA concentration ranged between 386 and 3,109 mg L −1 (pH 7.6 ± 0.2 and 4.8 ± 0.4) in sodium bicarbonate buffered digestate and control (water) respectively. The result indicates buffering capacity of urine on anaerobic co-digestion with positive effect on biogas production. The Archaeal isoprenoids included markers of aceticlastic and hydrogenotrophic methanogens with a relative abundance that ranged between 0.71-18, 3-55, and 2-59 µg g −1 dry matter in the water (control), bicarbonate and urine buffered digestate, respectively. The Archaeal abundance was 1.12 and 6 times higher in the combined female/male urine than the bicarbonate buffered digestate and the control, and the difference was significant at p = 0.05. Overall, this study demonstrates that human urine with no pharmaceutical loadings as a wetting and buffering agent is a promising option for anaerobic co-digestion with competitive edge over sodium bicarbonate on lignocellulosic biomass saccharification for enhanced biogas production. HIGHLIGHTS-Source separated human urine served as buffer in anaerobic co-digestion process.-Combined female/male urine exerted an additive effect on biogas production. -Competitive edge offered by the combined female/male urine over sodium bicarbonate buffer in relation to biogas produced. -Evidence of synergy for enhanced biogas production from high C/N ratio lignocellulosic biomass combined with low C/N ratio poultry feces.

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Section: Effect Of Urine Buffer On Biogas Production and Phmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhanced Biogas Production From Anaerobic Co-digestion of Lignocellulosic Biomass and Poultry Feces Using Source Separated Human Urine as Buffering Agent

Eduok

John

Ita

et al. 2018

Front. Environ. Sci.

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“…Sun et al, 2012) and lactic acid fermentation (e.g. Andreev et al, 2017). Stabilisation processes generally have some potential to inactivate some pathogens (Hellstr€ om et al, 1999;Bischel et al, 2015;Randall et al, 2016).…”

Section: Stabilisation Processesmentioning

confidence: 99%

“…Stabilisation processes generally have some potential to inactivate some pathogens (Hellstr€ om et al, 1999;Bischel et al, 2015;Randall et al, 2016). Biological processes in addition also have the potential to degrade some organic pollutants (Fumasoli et al, 2016;Andreev et al, 2017).…”

Section: Stabilisation Processesmentioning

confidence: 99%

Recycling nutrients contained in human excreta to agriculture: Pathways, processes, and products

Harder

Wielemaker

Larsen

et al. 2019

Critical Reviews in Environmental Science and Technology

172

108

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The need for better nutrient management has spurred efforts towards more comprehensive recycling of nutrients contained in human excreta to agriculture. Research in this direction has intensified throughout the past years, continuously unfolding new knowledge and technologies. The present review aspires to provide a systematic synthesis of the field by providing an accessible overview of terminology, recovery pathways and treatment options, and products rendered by treatment. Our synthesis suggests that, rather than focusing on a specific recovery pathway or product and on a limited set of nutrients, there is scope for exploring how to maximize nutrient recovery by combining individual pathways and products and including a broader range of nutrients. To this end, finding ways to more effectively share and consolidate knowledge and information on recovery pathways and products would be beneficial. The present review aims to provide a template that aims to facilitate designing human excreta management for maximum nutrient recovery, and that can serve as foundation for organizing and categorizing information for more effective sharing and consolidation.

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“…The inactivation of E. coli , Salmonella, and MS2 at these higher temperatures was faster than that which occurred in the urine stored at ambient temperature ( Nordin et al, 2013 ; Vinneras et al, 2008 ; Zhou et al, 2017 ). The rapid inactivation of bacteria could be achieved by coupling other technologies with this process, such as acidification ( Andreev et al, 2017 )and nitrification ( Bischel et al, 2015 ). Similarly, self-sanitization by ammonia and a high temperature is also effective for fecal sludge, but the time needed to eliminate pathogens is longer than that needed for urine due to the large amount and species of pathogens, viruses, and helminths in it ( Fidjeland et al, 2015 ; Magri et al, 2015 ; Magri et al, 2013 ).…”

Section: Sanitation Activities In Scientific Researchmentioning

confidence: 99%

Review of global sanitation development

Zhou

Zheng

et al. 2018

Environment International

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The implementation of the United Nations (UN) Millennium Development Goals (MDGs) and Sustainable Development Goals (SDGs) has resulted in an increased focus on developing innovative, sustainable sanitation techniques to address the demand for adequate and equitable sanitation in low-income areas. We examined the background, current situation, challenges, and perspectives of global sanitation. We used bibliometric analysis and word cluster analysis to evaluate sanitation research from 1992 to 2016 based on the Science Citation Index EXPANDED (SCI-EXPANDED) and Social Sciences Citation Index (SSCI) databases. Our results show that sanitation is a comprehensive field connected with multiple categories, and the increasing number of publications reflects a strong interest in this research area. Most of the research took place in developed countries, especially the USA, although sanitation problems are more serious in developing countries. Innovations in sanitation techniques may keep susceptible populations from contracting diseases caused by various kinds of contaminants and microorganisms. Hence, the hygienization of human excreta, resource recovery, and removal of micro-pollutants from excreta can serve as effective sustainable solutions. Commercialized technologies, like composting, anaerobic digestion, and storage, are reliable but still face challenges in addressing the links between the political, social, institutional, cultural, and educational aspects of sanitation. Innovative technologies, such as Microbial Fuel Cells (MFCs), Microbial Electrolysis Cells (MECs), and struvite precipitation, are at the TRL (Technology readiness levels) 8 level, meaning that they qualify as “actual systems completed and qualified through test and demonstration.” Solutions that take into consideration economic feasibility and all the different aspects of sanitation are required. There is an urgent demand for holistic solutions considering government support, social acceptability, as well as technological reliability that can be effectively adapted to local conditions.

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Lactic acid fermentation of human urine to improve its fertilizing value and reduce odour emissions

Cited by 37 publications

References 57 publications

Enhanced Biogas Production From Anaerobic Co-digestion of Lignocellulosic Biomass and Poultry Feces Using Source Separated Human Urine as Buffering Agent

Enhanced Biogas Production From Anaerobic Co-digestion of Lignocellulosic Biomass and Poultry Feces Using Source Separated Human Urine as Buffering Agent

Recycling nutrients contained in human excreta to agriculture: Pathways, processes, and products

Review of global sanitation development

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