Meeting sanitation and energy needs with Biogas

So is it possible to feed a biogas digester with human waste? Yes it is. The problem however is getting enough of it into the digester. The traditional answer to this has been to build latrine stances which feed, by gravity, directly into the digester

Wantokism

So we’ve been doing some investigation into installing biogas into schools which are using huge amounts of firewood for their cooking needs. These are BIG institutions! We’re talking upwards of 1500 boarding students!

There are a lot of challenges with biogas even at a small scale. Most notably for me the pure amount of unsavoury work it takes to feed the beast! The calculations say that about 60% of fuel needs can be met by Biogas…best case.

These schools happen to have a huge problem with sanitation as well. With no water borne sewage they rely on pit latrines. The maintenance of these systems (either digging new ones, or emptying them) imparts another financial cost of the schools. Not to mention the possible damage to the ground water system! In the area we are working there is no ‘honey sucker’ truck to dispose of human waste…it’s dumped on site, in…

View original post 114 more words

FROM WASTE TO ENERGY

Sweden sends just 1% of its residential solid waste to the landfill, recycling 50% and thermally processing 49% for heat and power generation in their WTE plants (waste to energy).

Planet Earth Weekly

wast managemet sweeden

By Lin Smith

August 11, 2013–Sweden, a country of 9 million people, is one of our planet’s leaders in creating a plan to reduce greenhouse gas emissions. Their goal is to achieve a completely oil free economy by 2020, replacing fossil fuels with renewable alternatives before “climate change undermines national economies worldwide and diminishing oil supplies force astronomical price increases.” Their renewable alternative–turning trash into power! Although at the present time Sweden relies on other forms of energy, burning of garbage accounts for an equivalent of 810,000 homes being heated and the electrical equivalent of 250,000 homes being powered. The waste to energy plants are burning garbage faster than Swedes can produce it, so their solution? Import garbage from Norway!

Sweden sends just 1% of its residential solid waste to the landfill, recycling 50% and thermally processing 49% for heat and power generation in their WTE plants…

View original post 992 more words

An Energy Source Few People Know About

One source of energy that has been around for a long time is the methane gas generated by the wastewater treatment process. Twenty years ago some WWTP’s explored the idea of cogeneration to offset their high energy costs. At the time, the cost of converting the methane gas to energy was more expensive than buying it off the grid. Now that has all changed.

Enviro-Care

As the United States moves toward energy independence, it has been exciting to see the many new sources of energy that are available to this country.  On the renewable energy side of the equation, there are hundreds of projects in the wind, solar, hydro, geothermal, tidal, and biofuels sectors.  Many of these are good sources of renewable energy, although currently some are either not practical or readily available.

One source of energy that has been around for a long time is the methane gas generated by the wastewater treatment process.  Twenty years ago some WWTP’s explored the idea of cogeneration to offset their high energy costs.  At the time, the cost of converting the methane gas to energy was more expensive than buying it off the grid.  Now that has all changed.

Private and public wastewater treatment and landfill facilities have jumped on board this cogeneration movement in order to…

View original post 265 more words

BioCNG : Fuel of the Future

BioCNG has the abilities and the properties to run any vehicle or motor which can be run on CNG. Every application or motor which uses CNG today, can easily switch to using BioCNG without any hassle. The attributes of BioCNG and CNG are nearly the same in this respect. Thus, BioCNG is the direct and easy replacement of CNG and LPG appliances.

Carbon Clean Solutions

Image

How many times do you wake up to the news of petrol prices hiking? In today’s world with its rampant usage of non-renewable energy resources, this is a major concern for most individuals and organizations. Unfortunately, it doesn’t just stop at petrol and oil resources. Coal and gas are also rapidly running out. As the result effect of the usage of non-renewable resources on the environment is more than alarming, we as the human beings have to accelerate the deployment of more sustainable alternatives.

Although many such sustainable options have been discovered and put to use, the biggest challenge that mankind now faces is the affordability of these options on the whole. However clean a sustainable energy resource be, it must possess the ability of mass production at affordable rates. Only after mass production will an energy resource be considered an actual, viable source.

As of now, we have following…

View original post 676 more words

Biogas potential in Pakistan

There are 30,000 large farms in Pakistan employing more than 50 cattle and 18000 farms rearing 200 cattle per farm on the average. Large Farms and cattle owners can produce electricity for others and sell it to the grid. A farm having 1000 cattle can generate 0.5 MW of electricity and a farm of 2000 cattle can generate 1 MW. One can reasonably assume that 1000 such farms can be marshaled to provide atleast 1000 MW, against a total potential of 3800 MW.

Agriculture Information Bank

.

Table: Biogas Potential in Pakistan

====================================================

No of Livestock=56.9 Million

Live stock Biomass generation=1 Mn Tons/day

Number of Large Dairy Farms=30,000 (avg 200 Cattles)

MSW =55000 tons/day

Crop residue= 225000 tons/day

Annual Biogas (Bio-methane) potential=1.6 TCF/yr

Pakistan Ngas Production=1.4 TCF/yr

Existing Short Fall= 1 TCF/yr

CNG consumption=0.164 TCF/yr

LNG projects =0.146 TCF/yr (25 Billion USD imports)

OR Electricity Potential from Biogas =3800 MW

—————————————————-

Source: Author’s Estimates

=============================
DAIRY FARM HERD SIZE AND BIOGAS & ELECTRICITY OUTPUT
========================================================
No  of animals    Gas out put   Tot.Gas   Tot.Electr    Power    Profit
number            CM/animal/d   Mbtu/yr     kWh/yr       KW       Rs/yr
========================================================
5000                  2.4       147000     14700000     2940   14700000
3000                  2.4        88200      8820000     1764    8820000
2000                  2.4        58800      5880000     1176    5880000
1000                  2.4        29400      2940000      588    2940000
500                   2.4        14700      1470000      294    1470000
200                   2.4        5880       588000      117.6    588000
======================================================

Source: http://www.brecorder.com

View original post

Animation of a simple telescoping Biogas Digester

The process is very simple — on the first day you put in about 40 kg of animal manure (horse or cow work fastest, but anything will work) and fill up the container with water. Then place the gas collector on top with the valve open so it sinks down into the bottom container, driving out the air. Then close the valve. After about 3 weeks the gas being created inside the container will be flammable.

Newzaholic.com

For this simple animation describing just how simple it is to build your own biogas digester I downloaded Google Sketchup 7 and then used Google 3D Warehouse to download a model of a digester by roilbilad130 called “Biogas untuk limbah dapur” which is Indonesian for “Biogas for Kitchen Garbage”. I changed the food inlet pipe and the fertilizer output pipe to reflect the way they work in the ARTI India systems we have been building in Cairo and Germany and set different sequence animation key frames in Sketchup and did screen capture in Snap Z Pro. Building real digester is about as easy as building a digital one in sketchup — it really is just two plastic barrels, one inverted inside the other, with three pipes — one to get the food in, one to take the liquid fertilizer out and one at the top to deliver the gas to…

View original post 225 more words

Food Waste in the Hospitality Industry

Though lots of attention and encouragement has been given to composting and donating leftover food, the first step we can take is to reduce the amount of food produced. Reducing food portions will help immensely and play an important role lessening the waste. Not only is it a good cost control measure to do an inventory of all of your food products, but it will also ensure that perishable food does not go bad before you get to use it. By putting in place and respecting an organized inventory process, waste of easily perishable food can go down. This will also help in reducing food costs greatly.

Stop Food Waste

Introduction

 Every year, 475 pounds of food waste is produced by the average person adding up to more than 70 million tons in our landfills. Not only does the waste attract vermin, it emits odors and liquids that are toxic to the environment. As a result, the methane gas generated from the waste is 20 to 25 times more potent than carbon dioxide. Food waste has become a big issue in all types of businesses.

 This is especially true in the hospitality industry. Haute cuisine, all you can eat buffets, and in room dining are all an integral part of the hospitality experience. But what happens to all the leftovers once guests are done eating? Most of it will be hauled off to landfills at a great cost to the establishment and an even greater cost to the environment.

Our report will look at and provide statistics on…

View original post 3,850 more words

Biogas generator

The process begins with the segregation of the waste to ensure the waste that is used in completely biodegradable (fragments of plastics and glass are sent to a dumping ground). Once segregated the waste is put into a liquefier.

gsf165

To find out if waste to energy plans are already used in Mumbai, we got in touch with an engineer from the solid waste management of the Municipal Corporation of Greater Mumbai (MCGM). He told us that in Deonar (an area with a notoriously large dumping ground) a biogas generator had recently begun to convert biodegradable waste to energy for a local hospital. Although it isn’t directly related to our project, by going to the site we got an idea as to how much electricity can be generated from biodegradable waste.

The process begins with the segregation of the waste to ensure the waste that is used in completely biodegradable (fragments of plastics and glass are sent to a dumping ground). Once segregated the waste is put into a liquefier. Check this out in this video:

After being liquified the waste is put into a chamber with microbes that process…

View original post 248 more words

Cities Worldwide Seek to Produce Recycled Energy

Public transportation like subway or buses in Sweden’s Hammarby sjostad city are running by 100 percent recycled energy. Hammarby sjostad is known as “the city with zero carbon emission.” It is easy to spot people putting bio-gas in their vehicles at every gas stations in Hammarby sjostad city.

Waste-to-Energy in a Dairy Farm

The farm is now turning the extra manure into fuel for its delivery trucks, powering 42 tractor-trailers that make daily runs to raw milk processing plants in Indiana, Kentucky and Tennessee.

Eideard

Here at one of the largest dairy farms in the country, electricity generated using an endless supply of manure runs the equipment to milk around 30,000 cows three times a day.

For years, the farm has used livestock waste to create enough natural gas to power 10 barns, a cheese factory, a cafe, a gift shop and a maze of child-friendly exhibits about the world of dairy, including a 3D movie theater.

All that, and Fair Oaks Farms was still using only about half of the five million pounds of cow manure it vacuumed up from its barn floors on a daily basis. It burned off the excess methane, wasted energy sacrificed to the sky.

But not anymore.

The farm is now turning the extra manure into fuel for its delivery trucks, powering 42 tractor-trailers that make daily runs to raw milk processing plants in Indiana, Kentucky and Tennessee. Officials…

View original post 226 more words

Basics of Biogas Technology

All the nine users of the flexible balloon digesters appreciate the technology because of the various advantages it has over using firewood. However, more efforts need to be geared at educating and sensitizing the masses about biogas technology and how to adapt to maintenance demands of the system.

Eat your leftovers

Rather than sitting in a landfill, organic wastes such as food leftovers are put into anaerobic digesters that produce biogas rich in methane. This biogas can be used as fuel for heat and power generation, and the stuff that’s leftover can be used as composting material.

Energy, Technology, & Policy

Americans throw away about 30% of all food produced domestically each year, and since at least 8% of the U.S. energy budget goes towards bringing food to tables across the country, energy waste is closely tied to food waste [1]. In fact, all of that wasted food equates to about 350 million barrels of oil per year [1].

The energy embedded in food waste comes from many sectors of the food industry: production, transportation, storage, and preparation. Since food waste is a cultural problem, it is not likely that it will stop any time soon. A better solution to waste prevention could be to take advantage of the energy potential of food in our landfills. Rather than sitting in a landfill, organic wastes such as food leftovers are put into anaerobic digesters that produce biogas rich in methane [2]. This biogas can be used as fuel for heat and power…

View original post 187 more words