What is bagasse?

Bagasse is the dry pulpy fibrous residue that remains after sugarcane or sorghum stalks are crushed to extract their juice. It is used as a biofuel for the production of heat, energy, and electricity, and in the manufacture of pulp and building materials.

What is agricultural waste?

Agricultural waste, or agricultural residue, contains all parts of the plant that are released with the processing of agricultural crops like rice, grain, and sugarcane and are not suitable for human nutrition, like stems and leaves. This consists of about 80% of the harvest. The food industry only uses a small part of the agricultural crop. Often, only the seeds, fruits, roots and juices are used, which is about 20% of the plant. Because the vast majority of the plant is not of value to the food industry, we call this agricultural waste or agricultural residue. However, to envoPAP, it is anything but waste. We use it as a raw material for high quality paper and paperboard.

How much agricultural waste becomes available worldwide every year?

The four most cultivated agricultural crops worldwide are rice, grain, corn, and sugarcane. These crops have a total weight of over 16,500 billion kilos per year. About 80% of that weight can be regarded as agricultural waste and becomes available annually.

Is there enough agricultural waste available for the production of paper and paperboard?

In Europe, all people and companies together use approximately 77.4 billion kilograms of paper and cardboard per year. To transport this volume, more than 5 million trucks are needed. To make these 77.4 billion kilograms of paper and carton, we only need about 1.8% of the worldwide available agricultural waste.

Why hasn't agricultural waste used as a raw material for paper before?

This has to do with paper demand, worldwide population growth, and technical innovation to be able to make high quality paper and paperboard nowadays from agricultural waste. A hundred years ago, paper and paperboard was also made from agricultural waste. However, due to quality aspects, the paper industry at the time switched to virgin wood fibers as raw material. envoPAP makes it possible to again use agricultural waste as the most logical raw material for paper and paperboard. This is what we call 'Wealth from Waste'.

Why do we use agro-waste to make paper?

We know that forests are threatened and endangered around the world, so it is important to us to find alternative materials that do not require virgin forest resources. With bagasse, we can still use high performing disposable "paper" products, but know that we are choosing a product that is made from rapidly renewable and reclaimed sugarcane instead of trees.

Most types of trees in Europe have a growing season of between 25 and 40 years. For pine and spruce, this is between 70 and 80 years. For birches, this is between 35 and 40 years. For eucalyptus trees, this is between 12 and 15 years. In comparison: agricultural land produces at least one harvest per year. Agricultural waste becomes available every year.

Absolute/relative moisture: 

The absolute moisture of the air is the maximum amount of water vapor which the air can contain before the excess water is released as dew or frost. Absolute moisture is measured in grams per cubic meter. As the temperature falls the air contains less water in grams at the same relative moisture.

To understand why the air may be drier or damper, we can consider why someone’s beard becomes frosty on a cold winter day, when the air seems to be dry, while water evaporates when we sit in a damp sauna.

Ash content:

It is a measure of the inorganic filler or coating content of paper, including calcium carbonate, china clay and titanium dioxide. Ash content is determined on oven dried samples which are heated to 525°C (or 900°C) to ensure that all the combustible cellulose material is consumed.