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New video and print resources available at www.aqsolutions.org.

Contamination of drinking water sources by synthetic organic compounds (SOCs – e.g. pesticides, pharmaceuticals, fuel compounds, etc.) is a growing worldwide problem. Many of these chemicals bio-accumulate in the human body and cause cancer, birth defects and diseases of the reproductive system, and disrupt endocrine and neurological systems. However, few low-cost, sustainable and appropriate treatment technologies are available to rural and developing communities for SOC removal.

Water filtration using charcoal is an ancient practice that continues today in non-industrialized regions around the world, though it has not yet been rigorously demonstrated for removal of modern industrial pollutants. Unfortunately, charcoal production by traditional kiln systems is often a resource-intensive and highly polluting process, and kiln processes are typically not optimized for production of good water filter char. Low cost, energy efficient, environmentally sustainable and scalable local production of optimal water filter char can be accomplished with biomass gasification (e.g. cookstoves and larger units using the TLUD design).

The video and print resources available on the Aqueous Solutions website (www.aqsolutions.org) are intended to

  1. summarize current results of collaborative field and laboratory research pertaining to the use of traditional kiln charcoals and gasifier chars in decentralized water treatment that targets SOCs,
  2. provide instructional materials for construction and operation of small- and intermediate- scale gasifier char production units using local materials, and
  3. provide instructional materials for integration of biochar filtration into a multi-barrier small- and intermediate- scale water treatment systems constructed from inexpensive and widely available materials.

Umang Maheshwari, Greenway Grameen Infra

The Greenway Smart Stove is an insulated metal stove, that appears to be a rocket style design with bakalite handles and a metal pot rest and fuel rest. You can see more details in the Greenway Smart Stove flyer.

This stove is marketed as an improvement over the mud Chulha, which is familiar in India.

Stove schematic
building the stoves
testing the stoves

Stephen Joseph, Do Duc Khoi, Tran Manh Hung, Mai Thi Lan Anh, Nguyen Van Hien, Nguyen Hong Hanh, Hoang Huu Dung

SEM Images C. Chia and with the University of New South Wales

Please Read the Original Slide Presentation
http://stoves.bioenergylists.org/files/development_of_tlud_cookstoves_and_drum_ovens_in_north_vietnam_0.pdf Air Jordan VIII Low

aquaponics schematic

Stephen Joseph

The system uses

  1. Biochar reactor to convert all residues and purpose grown crops (especially bamboo and acacia) to biochar for use as a growing media, filter and for feeding to fish with wood vinegar (1% biochar with ,25% wood vinegar).
  2. Heat from biochar reactor maintains optimum temperature for fish and pl,ants
  3. Biochar used as a medium for improve nutrient uptake in either pots tanks or troughs. Note with biochar water flows through troughs for only 1-3 hours per day reducing electricity requirements.
  4. Aeration pond to grow water plants, fingerlings and filter water

Read the presentation for more detail:
http://stoves.bioenergylists.org/files/schematic_biochar_aquaponics_with...
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  • Field research in Jilin province, China
  • Use of nephelometer in rural field setting
  • Characterization of indoor air quality and driving factors
  • Case study: three village-scale clean energy interventions

Conclusion:

  • nephelometers promising, but must be used with caution
  • High-humidity samples or dense, poorly mixed plumes create nonsystematic optical distortion
  • Conventional measures of central tendency sensitive to distortion when high-humidity samples are not censored

Indoor air quality and driving factors in a rural Chinese village

  • Time-resolved CO and PM data enable characterization of peak pollution periods.
  • Diversity of fuels within single village facilitate investigation of fuel- and stove-related factors as well as tobacco smoking as determinants of indoor air pollution.

Though 24-h CO well within standards, a substantial fraction (27%) of peak 1-h episodes exceed WHO’s 1-h guideline & outliers surpass OSHA’s evacuation threshold. Short-term resolution is critical for characterizing acute risks posed by CO exposures in rural kitchens.

Adoption of “improved” cooking fuels does not suffice to reduce indoor air pollution where heating dominates fuel use. Health-oriented interventions limited to provision of improved cooking fuel are insufficient in cold climates.

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File attachments: 

Dr TLUD (Paul S. Anderson) would like to share recent documents about rice husk gasifier technology and its application from Alexis T. Belonio (Professor and Engineer) of the Center for Rice Husk Energy Technology (CRHET).

The first four documents describe stove developments through CRHET’s collaboration with fabrication shops. These stoves provide rural households and small cottage industries new options for clean cooking using agricultural wastes, like rice husks, as fuel.

  1. Batch Type Rice Husk Gasifier Stove, Model RHGS-12D
    (Document URL: http://drtlud.com/wp-content/uploads/2011/12/rhgs1.pdf )
  2. Continuous Type Rice Husk Gasifier Stoves, Models 10D, 12D, and 14D
    (Document URL: http://drtlud.com/wp-content/uploads/2011/12/rhgs2.pdf )
  3. Firefly (BMG-1040SS), Quickfire (BMG-1050SS), and Wildfire (BMG-1060SS) Biomass Gasifier Stoves
    (Document URL: http://drtlud.com/wp-content/uploads/2011/12/rhgs3.pdf )
  4. A Two-Burner, Continuous-Type Rice Husk Gas Stove (CFRHGS Model 16D-2B)
    (Document URL: http://drtlud.com/wp-content/uploads/2011/12/rhgs4.pdf )
  5. Small-Scale Rice Husk Gasifier Plant for Community Street Lighting
    (Document URL: http://drtlud.com/wp-content/uploads/2011/12/rhgs5.pdf )

The fifth document describes a rice husk gasifier plant which produces enough electricity for community street lighting. This plant was developed by Suki Trading Corporation in Lapu-Lapu City, Cebu, Philippines in collaboration with Kanvar Enterprises and the Center for Rice Husk Energy Technology (CRHET).

Dr. N. Sai Bhaskar Reddy, CEO, GEO December, 2011
http://e-geo.org

See the attached pdf (about 150kb): Understanding Stoves
it is an excellent brief summary that highlights the important aspects of stoves design and testing. e.g. fuels, fuel preparation, stove design, materials, use and testing.Air Max 90 YEEZY 2 SP

From GEO BIOCHAR STOVE
From GEO BIOCHAR STOVE

* About 30% biochar production
* 3 to 4 days for a batch of charcoal production
* Continuous hot water access (pot 1)
* Highly suitable for institutional cooking and as well making biochar
* Additional heat generated by flaring the pyrolysis gases, used for cooking
* Mitigation of the emissions during the pyrolysis by flaring
* Costs about Rs. 3000 for a 2’ width x 5’ depth x 6’ hight (in feet) “GEO Biochar pit stove”. (cost including, tin sheet for cover, digging the pit, three pot stove and chimney.)

*_"GEO BIOCHAR STOVE" is designed by Dr. N. Sai Bhaskar Reddy, CEO, GEO. Demonstrated to farmers under the project Good Stoves and Biochar Communities Project, being supported by GoodPlanet.org, France

The Low Smoke Chulha has been enabled by Philips Design in close co-operation with NGOs, self-help groups, local entrepreneurs and potential users. Low Smoke Chulha provides a safer home environment for families, reduces the risk of respiratory illness, and supports indigenous ways of cooking. The Low Smoke Chulha is not only smokeless but also helps every household save 10 kilos of firewood each house each day which is 4 tones of firewood a year!

See our page: http://www.lowsmokechulha.com/

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