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Prevention and control of forest soil erosion on coastal strip of the baltic sea using lignin-based polymers

New, ecologically friendly and effective lignin-based soil
conditioners for the prevention and control of forest soil
erosion and related application technology will be
developed.

Forest ecosystems have dominating role in environmental equilibrium. With the aim of maintaining this equilibrium wind and water erosion of forest soils must be prevented. For the coastal strip of the Baltic Sea (the zone of the independent republics - LATVIA, LITHUANIA, ESTONIA and the Kaliningrad Region of RUSSIA), this ecological problem is especially topical in connection with the peculiarities of sandy soils as well as felling trees and forest fires. The most well known methods of stopping soil erosion, such as the planting of trees and erecting of hedges, are unfortunately labour-consuming and not very effective. The results have shown that water solutions of synthetic polymers, for example, Curasol, Soil Seal, Sandstill, VAMA, IMBA, etc. are attractive for binding the eroded surfaces of light soils and forming the composite polymer-sand layers that do not prevent diffusion of air and water from/into soil. However, these polymers are not effective enough and, after degradation in soil, cannot form humus- like substances, but, sometimes, can cause soil contamination. Due to their natural origin, technical lignins such as lignosulphonate, hydrolysed lignin and kraft-lignin, which are wide scale by-products of pulp and paper mills and hydrolysis plants, have pronounced adhesive properties and possess an advantage over synthetic polymers, since they are produced from renewable raw-lignin and can biodegrade into soil with forming humus. The ability of the lignins to form chelate compounds with polyvalent metal ions can be used both for forest soil protection from erosion, soil recultivation and its protection against contamination. The polymeric nature and polyfunctionality of the lignin molecules allow the enhancement of their adhesive properties and chelate forming activity by chemical modification. The goals of this project are: 1) development of new, ecologically-friendly and effective soil conditioners for forest light soils based on the modern modes of chemical modification of technical lignins; 2) development of technology of lignin-based conditioners application on the soils. Keywords: forest, soil erosion, technical lignins.
Acronym: 
FOREST SOIL EROSION
Project ID: 
2 622
Start date: 
01-12-2001
Project Duration: 
114months
Project costs: 
240 000.00€
Technological Area: 
Environmental Engineering / Technology
Market Area: 

Raising the productivity and competitiveness of European businesses through technology. Boosting national economies on the international market, and strengthening the basis for sustainable prosperity and employment.