Large Capacity and Sustainable Wood Pellet Production in Java Island

Biomass for energy production can be cultivated on critical land, or so-called 'unproductive' land. The Ministry of Environment and Forestry estimates that critical land in Indonesia in 2016 was 24.3 million hectares (Times Indonesia, 2017). This is a very large area, and overall Indonesia's territory is large enough to provide biomass for renewable energy production.  

Globally, the need for wood pellets is predicted to continue to increase. This is because in the current power generation industry, more than a third of global electricity production still uses coal. This portion must drop to 4% by 2030 and 0% by 2040 if the world wants to limit global warming to 1.5 degrees Celsius (2.7 degrees Fahrenheit) and prevent the severe impact of the climate crisis. The world has 6 years from now to reduce the use of coal in power plants to less than 4% by 2030, this is also what makes a number of coal companies develop renewable energy, especially wood pellets from energy plantations.

However, in Java Island, the availability of land for energy crop development is limited because it conflicts with the need for agricultural land. The greatest opportunity for energy plantation forest development is on land owned by Perhutani which is categorized as 'unproductive land'. In some cases, through social considerations, land can be directed to programs that are in line with the objectives of social forestry in accordance with the Decree of the Minister of Environment and Forestry number P.39 / 2017 and P.38 / 2016. However, as an effort to develop the business, Perhutani can utilize its land to specifically produce biomass for energy.

In accordance with Perhutani's long-term plan, and in line with the company's business development plan, Perhutani has allocated a forest area of ​​116,372 ha or around 4.7% of Perhutani's total area in Java (2,445,000 ha) as a potential area for biomass plant development spread across 13 KPH (Forest Management Units) in Central Java, East Java, West Java and Banten provinces.

Throughout the Perhutani area, there are potential areas that have unproductive forest stands (open land or reduce forest potential, or tend to be unproductive in the long term) covering an area of ​​308,000 hectares, spread across 57 KPHs. This area is divided into 15% in Central Java, 34% in East Java and, 51% in West Java and Banten. Based on the unproductive area, approximately in 27 KPHs it is calculated to be around 229,286 ha or 74% of the total potential area for Biomass Energy Plantations.

Hundreds of thousands of sawdust are currently used for PLN's cofiring program in Java, disrupting the supply of raw materials for wood pellet factories. This is why the production of wood pellets from sawdust taken from the sawmill industry or wood industry waste in Java for large-capacity wood pellet production will be at great risk of disrupting the supply of raw materials. So that the wood pellet factory in Java can run well if the availability of raw materials can be maintained and this can only be realized in two ways, namely first using its own raw materials, this can be done by sawmills and wood processing industries that utilize their own waste for wood pellet production, and second with raw material sources from energy plantations. The area of ​​land that can be used for energy plantations as described above is very potential for a source of raw material supply for large-capacity wood pellet production on Java Island and the availability of supporting facilities on Java Island which are more complete and better is an additional driving force.

Energy Plantations Energy Sources for All Time

 "Allah who makes fire for you from green wood, then you kindle (fire) from it." (QS. Yaasin (36): 80)

The sun was created by Allah SWT as the main source of energy for humans and living things on earth. It takes about 8 minutes for sunlight to reach the earth and is converted by plants into a food source so that it can be consumed by animals and humans. Humans also get food from animal sources. The more sunlight, the more can be converted by plants through the process of photosynthesis. Without the sun, plants die, animals die, humans die so that there will be no life on earth. Fossil fuels are essentially a source of energy from plants and animals in the past. Mining and use of fossil fuels will release a number of greenhouse gases (GHG) which increase the earth's temperature which at a certain level is dangerous for the earth's population itself. Efforts to overcome this are by using non-fossil energy and renewable energy so as not to contribute to increasing the concentration of GHG in the atmosphere which increases the earth's temperature.

From plants or trees can be directly used as a source of energy or fuel, namely firewood. Derivatives or energy products from plants are also very diverse and can meet all human needs, both energy in the form of solid fuels, liquid fuels and gas fuels. The production of firewood, wood chips, wood briquettes, sawdust, torrified biomass to charcoal are a number of solid fuel products. While the production of biooil, bioethanol, biodiesel, renewable diesel / green diesel, and bioavtur / bio jet fuel are a number of liquid fuels. And biogas and bio-syngas are gas fuels that can be produced from the original material in the form of plants.

A number of conversion techniques based on physics, chemistry and biology are needed for the conversion. The use of appropriate plant species is also needed to facilitate the conversion, for example for the production of solid fuels, biomass sources such as wood are needed, while if the target is liquid fuel, then the type of oil-producing plants that need to be pursued. Conversion from solid fuels to liquid or gas fuels can also be done but in general the longer and more complicated the process, the more expensive the production costs will be. But still, energy plantations are the basis for all of that.

Popular and fairly easy biomass processing is to make wood chips with size reduction then wood pellets and wood briquettes through biomass densification. Furthermore, to convert sugary biomass into ethanol with fermentation and azeotropic distillation, convert lignin biomass (lignocellulosic biomass) into ethanol with enzymatic hydrolysis reactions followed by fermentation and azeotropic distillation. Converting woody biomass into fuel with a thermal process can be burned directly or if you want to make charcoal, concentrate the fixed carbon, namely by pyrolysis or carbonization, and if you want to maximize liquid products / bio-oil / pyro-oil, namely by fast pyrolysis and if you want to maximize gas products, namely by gasification. And so that the characteristics of the biomass are like hydrophobic coal, the torrefaction or mild-pyrolysis process can be carried out. Torrefaction and densification are usually carried out together to optimize the biomass fuel product.

With gas to liquid (GTL) namely the gasification process and followed by the Fisher - Tropsch process, bio-ethanol, biodiesel and bioavtur / bio jet fuel can be produced. While from groups of plants that produce oil such as palm oil, biodiesel can be made especially with the transesterification or estran (esterification plus transesterification) process. Even used oil or used cooking oil / used cooking oil and miko (minyak kotor) / dirty oil or PAO (palm acid oil) can also be used for biodiesel / green diesel or further processed into bio-jet fuel / bio-avtur with the HVO / HEFA - SPK (Hydro-processed Esters and Fatty Acids-Synthesized Paraffinic Kerosene) process.

So basically, biomass from trees can be processed into various forms of energy or fuel needed by humans. In addition to being used directly as a heat source, this energy can also be converted into mechanical energy or electrical energy, for example biofuel-fueled vehicles to biomass power plants. So the source of energy throughout the ages stored in plants is this biomass as stated by Allah SWT in the verse above and there is no doubt whatsoever about it. Indonesia as a tropical country is a "heaven" for the production of biomass because of the rays of sunlight throughout the year and adequate rainfall and extensive land. The storage of energy in plants from sunlight is also likened to a battery that can be used anytime and anywhere for more details read here.

Another important thing to note for the creation of energy plantations or biomass plantations is the status of the land used. The land must not be from deforestation or land conversion (land use change) that damages the environment. Industrial plantation forests (HTI) that are in accordance with their designation can be used as energy plantations. In addition, biomass for producing energy can also be cultivated on critical land, or referred to as 'unproductive' land. The Indonesia Ministry of Environment and Forestry (KLHK) estimates that critical land in Indonesia in 2016 was 24.3 million hectares (Times Indonesia, 2017). This is a very large area, and overall Indonesia's territory is large enough to provide biomass for renewable energy production.

Energy Plantations: Not Only Wood Pellet Production But Must Also Support the Livestock Industry

The concept of energy plantation or biomass plantation by utilizing the whole tree seems to be still unpopular at this time. But sooner or later, God willing, it will happen because profit-oriented wood pellet companies will certainly maximize this aspect or profit, of course as long as it does not damage the environment and CSR (Corporate Social Responsibility) will be pursued in other ways. The main orientation currently focusing on wood products for wood pellet raw materials is certainly a good thing, but it would be much better if the benefits of all parts of the tree could be maximized. If this can be done, the benefits will not only be in the energy sector but also in food and feed, important sectors that are essential in human life.

The main composition of energy plantation leaves such as calliandra and gliricidia is protein and this protein element is an important and most expensive component compared to other elements of animal feed. With a large volume of leaves from energy plantations, it should support the livestock industry and not just be thrown away because it is just a by-product or waste that is less useful. In fact, from the livestock industry side, the opposite is true. The utilization of these leaves can be used directly on livestock or processed into animal feed in a processing industry depending on the local situation and conditions.

Large farms can be made from the utilization of energy plantation leaves as well as animal feed factories from the leaves. Leaf pellet production can be done with a production process similar to wood pellet production so that a wood pellet factory adjacent to a leaf pellet factory is also very possible. Like export-oriented wood pellet products, leaf pellets can also be the same. Meanwhile, if a large farm is to be carried out, waste from the livestock farm or animal waste can be used as raw materials / substrates for biogas production. The biogas can then be used for drying in the production of wood pellets or leaf pellets or used for electricity production. The residue from the biogas will become organic fertilizer, either solid organic fertilizer or liquid organic fertilizer. A simple diagram as below.

Thousands of cattle or breeding cattle are imported into Indonesia from Australia and New Zealand and cattle fattening is a promising business in Indonesia because the need for beef has not been met until now. The shortage of beef is met by importing buffalo meat from India and beef from Brazil. Support for the availability of abundant and quality feed is one of the important aspects of self-sufficiency in this meat. In addition to cattle, the need for goats and sheep is also very large. Yogyakarta, a city that is also famous for its goat satay cuisine, needs more than 1500 heads of sheep per day. In addition, the need for aqiqah and Eid al-Adha is also very large. The sheep export market is also very promising, which until now has not been met due to various factors, one of which is the feed factor. Feed in the livestock business plays a very important role or even around 70% of the cost of livestock is the cost of the feed. And livestock is a link in the chain of food needs for humans so that it is inseparable.