Abstract: The invention relates to a device (10) for dredging a watercourse or body of water, the device includes a watercraft (105) which supports a grinder, the grinder (110) for grinding plants found in the watercourse or body of water comprising an inlet (115) for plants and an outlet (120) for ground plants, and a floating receptacle (125) which is connected to the outlet of the grinder in order to collect the scraps of ground plants.

Abstract: The method (10) of molding a composite component comprises: a step (105) of positioning a layer of geotextile on a mold so that a lower surface of the layer of geotextile is positioned against the mold, a first step (110) of coating an upper surface of the layer of geotextile positioned during the positioning step with a biodegradable resin, a step (115) of bonding a layer of fibers, having a higher rigidity than the layer of geotextile, against the coated layer of geotextile, and a second step (120) of coating an upper surface of the layer of fibers with a biodegradable resin.

Abstract: The invention relates to a device (10) for dredging a watercourse or body of water, comprising: a watercraft (105) which supports a grinder, the grinder (110) for grinding plants found in the watercourse or body of water comprising an inlet (115) for plants and an outlet (120) for ground plants, and a floating receptacle (125) which is connected to the outlet of the grinder in order to collect the scraps of ground plants.

Abstract: A device for retaining solids includes a meshing, a removable fastener, and a covering. The meshing is made of synthetic material. The removable fastener to secure the covering is made of vegetable fiber to at least one portion of the meshing. The covering is made of vegetable fiber to cover at least part of the meshing.

Abstract: A mobile device for eradicating proliferating terrestrial plants has a feeder to introduce the plants to be treated and a generator to generate electromagnetic waves for sterilizing the plants within the layer of plants. The generator can be configured to emit microwaves and/or to heat the seeds of the plants to a temperature above 60° C. The mobile device can include a hopper to receive the plants, a separator to remove metal and/or stones, and a grinder to grind the plants, which is arranged upstream from the generator.

Abstract: A nonwoven geotextile includes: crushed plant stems (305) more than five millimeters in diameter; plant stem fragments (310); and plant fibers (315) partially attached to the crushed stems, wherein the plant stems and the plant stem fragments are interwoven by element of mechanical connections produced by spraying water. In preferred embodiments, the plants include hemp. The device for producing such a nonwoven geotextile includes: elements for arranging plants into a mat including crushed plant stems more than five millimeters in diameter, plant stem fragments and plant fibers partially attached to the crushed stems; and elements for spraying water onto the mat so as to form mechanical connections between the crushed plant stems, the plant stem fragments and the plant fibers of the mat.