In the ongoing efforts to extend appropriate sanitation to the millions in the world lacking it, it benefits all to show that the byproduct of sanitation is not waste, but a valuable agricultural resource. Some even call it the new gold. This tangential research below is important in helping get that gold and getting to that goal.
New research by
- Y Dilsad Yilmaze – Civil and Environmental Engineering Department, Villanova University, Villanova, PA, USA
- Goksel Demirer – Department of Environmental Engineering, Middle East Technical University, Ankara, Turkey
Nitrogen and phosphorus recovery from anaerobic co-digestion residues of poultry manure and maize silage via struvite precipitation
Anaerobic digestion is commonly used for the stabilization of agricultural and animal wastes. However, owing to the stringent environmental criteria, anaerobic digester effluents need to be further treated to reduce nutrient loads to the receiving water bodies. Struvite precipitation is one of the promising techniques applied for this purpose. Yet, in the majority of cases, struvite precipitation is only applied to the liquid phase of anaerobic digester effluents. This study investigated the recovery of nutrients from both the liquid and the solid phases of the phase-separated effluent of a full-scale biogas plant co-digesting poultry manure and maize silage. Struvite precipitation in the liquid phase led to 72.1% and 95.1% average removal efficiencies of ammonium-nitrogen (NH4-N) and orthophosphate respectively. Changing the external phosphorus source did not make any statistically significant difference in nutrient removal. An acidic phosphorus-dissolution process was applied to the solid phase sample to obtain a phosphorus-enriched solution. More than 90.0% of both NH4-N and PO4-P were recovered from the phosphorus-enriched solution with the amendments of magnesium and phosphorus. In the experiments performed without any addition of external magnesium- and phosphorus-containing chemicals, almost complete (99.6%) PO4-P recovery and partial (14.6%) NH4-N recovery were obtained. The results of this study could contribute to the understanding of nutrient recovery from anaerobic digestion residues of manure and agricultural wastes by struvite precipitation.
Side note while WASHLink appreciates the above efforts, we appeal for more researchers to seek out open access scientific and scholarly journals to publish their work. more on OA by an example
- Anaerobic digestion tabled in Franklin (franklinmatters.org)
- UK: 60,000 TPA anaerobic digestion biogas plant approved in Yorkshire (vernetblog.wordpress.com)
- Anaerobic digester for electricity, fertiliser production (vanguardngr.com)
- $20 million program would send chicken bones, pizza boxes to Madison biodigester (host.madison.com)
Location:Hamburg University of Technology. The campus is located in Hamburg-Harburg.
Dates: Wednesday, 28 – Saturday 31 August 2013
…An analysis of a former civilisation in the Amazon, nowadays Brazil, reveals concepts which enable a highly efficient handling of organic wastes. Terra Preta do Indio is the anthropogenic black soil that was produced by ancient cultures through the conversion of biowaste and faecal matter into long-term fertile soils. These soils have maintained high amounts of organic carbon even several thousand years after they were abandoned. It was recently discovered that around 10% of the originally infertile soils in the Amazon region was converted this way from around 7,000 until 500 years ago. Due to the accumulation of charred biomass and other organic residues, terra preta subsequently formed giving it a deep, distinctly dark and highly fertile soil layer.One of the surprising facts is that this soil is highly productive without adding fertiliser.
Recent research concludes that this culture had a superior sanitation and bio-waste system that was based on source separation of faecal matter, urine and clever additives particularly charcoal dust and treatment steps for the solids resulting in high yielding gardening. Additives included ground charcoal dust while the treatment and smell prevention started with anaerobic lactic-acid fermentation followed by vermicomposting.The generation of new Terra Preta (‘terra preta nova’) based on the safe treatment of human waste could be the basis for sustainable agriculture in the twenty-first century to produce food for billions of people….
Speakers / Sessions
Conference Keynote Dr. Haiko Pieplow (tbc)
Session 1: TP soils, soil fertility, organic farming
Key note from Bruno Glaser or Albrecht von Sydow (Germany) (tbc)
- T. Theuretzbacher (Austria): Investigation on Terra Preta like products on the german-Austrian market
- N. Andreev (Moldava): The effect of terra preta like substrate on germination and shoot growth of radish and parsley
- H. Factura (Philippines): Addressing Poor Sanitation and Generating Added Values through Terra Preta Sanitation
- B. Pelivanoski (Germany): Terra Pellet – an organic fertilizer inspired by terra preta
Session 2: TPS Applications, Quality of products, hygienic parameter, legislation, certification
Keynote presentation Prof. Srikanth Mutnuri (India) (tbc): Terra Preta as an Alternative for the Management of Sludge from Waste Water Treatment Plant
- S. Böttger (Germany): Terra Preta – production from sewage sludges of decentralised wastewater systems
- M. Stöckl (Germany): Vermicomposting of fecal matter and organic waste – a quality assessment of products
- D. Meier Kohlstock (Germany): The integration of Terra Preta Sanitation in European nutrient cycles – Options for alternative policies and economies
Session 3: Terra Preta Sanitation: toilet systems and designs / Logistic and operation / practical examples
Keynote speech Prof. Charlotte de Fraiture (Netherlands) (tbc)
- R. Wagner (Germany): New challenges of resource management in the Botanic Garden Berlin by producing and applying biochar substrates
- R. Kuipers (Netherlands): A socio-economic assessment of urine separation, with a reflection on the possibilities for Terra Preta Sanitation, for the recycling of nutrients to rural agriculture in the Philippines
- M. Bulbo (Ethiopia): TP application in Ethiopia
- R. Wolf (Germany): Application of Fermented Urine for build up of Terra Preta Humus in a Permaculture Park and Social Impact on the Community Involved
Session 4: Carbon composting of biowaste and excreta/Climate farming / wood gas technology for energy and char coal production / Pyrolysis vs. hydrothermal carbonization
Keynote presentation Prof. Zifu Li (China) (tbc): Energy balance analysis on the pyrolysis process of animal manure
T. Voss (Germany): Wood gasification in parallel flow fixbed gasifieres for combined energy and charcoal production – experiences from six years of operation (abstact follows)
- C. vom Eyser (Germany): Product quality of ç from sewage sludge in terms of micropollutants
- E. Someus (Sweden): Reducing mineral fertilisers and chemicals use in agriculture by recycling treated organic waste as compost and bio-char products
- J. Fingas (Germany): Climate farming – Practical experience from sub-Saharan Afrika
Session 5: Microbiology, sanitization and lactic acid fermentation
Keynote presentation Dr. Gina Itchon (Philippines): The Effectivity of the Terra Preta Sanitation (TPS) Process in the Elimination of Parasite Eggs in Fecal Matter: A Field Trial of TPS in Mindanao, Philippines
- A. Yemaneh (Germany/Ethiopia): Investigation of Low-Cost Sugar Supplement for Lactic Acid Fermentation of Human Excreta in Terra Preta Sanitation System
- A. Febriana (Indonesia): Faeces Treatment By Lactofermentation Process Based On Terra Preta Sanitation System Concept
- A. Walter (Austria): Microbial communities in charcoal and microbe amended composts
- F. Scheinemann (Germany): Sanitation and conservation of nutrients in cattle manure and sewage sludge by anerobic fermentation
Institute of Wastewater Management and Water Protection at TUHH
GFEU e. V.
Institute of Environmental Technology and Energy Economics at TUHH
German WASH Network
all details are from their site
PUYALLUP, Wash. – Phosphorus recycled from human and animal waste for plant fertilizer could ease demand for the dwindling, increasingly expensive rock-mined element.
Scientists at Washington State University have found plants flourish with struvite, a material in waste composed of magnesium, nitrogen and phosphorus. Teamed with Multiform Harvest, a Seattle phosphorus recovery company, the researchers are fine-tuning the application and amounts of fertilizer in hopes of marketing a product and benefiting the world’s food supply.
“You can’t continue mining a finite resource forever,” said Rita Hummel, a scientist at the WSU Puyallup Research and Extension Center. “But as long as we … can reclaim struvite…
See complete story…. titled
by Rachel Webber, College of Agricultural, Human and Natural Resource Sciences published Wednesday, Feb. 27, 2013
- The Future of Poop (motherboard.vice.com)
- Phosphorus demand triples as meat-eating and population rise – with VIDEO (environmentalresearchweb.org)