Abstract: The present invention provides a paint mixture containing a paint and paper sludge-derived sintered carbonized porous grains, the use of the paint mixture for removing lint, a composite structure containing the paint mixture and a lint removal method for the paper machine in the papermaking process, for the printing and/or copying process, and for the electric control panels in the papermaking mill to prevent piling and sticking troubles and/or fire breakout caused by lint generated during the operation of paper machine and equipment in the paper converting process. The provided paint mixture and method also reduces paper breakages of the paper machine. The provided paint mixture and method is composed of preparation of a mixture of paint and paper sludge-derived sintered carbonized porous grains and then paint, e.g., machines and/or equipment located after the Yankee dryer, steel pipe handrails in a household papers manufacturing mill.

Abstract: A method includes: a pre-treatment step of mixing radiocontaminated grains and a sodium phosphate-based dispersant; and a decontamination step of mixing the radiocontaminated grains processed by the pre-treatment step and paper sludge-derived sintered carbonized porous grains so as to incorporate radioactive 134Cs and 137Cs of the radiocontaminated grains in the sintered carbonized porous grains.

Abstract: The present invention provides a paint mixture containing a paint and paper sludge-derived sintered carbonized porous grains, the use of the paint mixture for removing lint, a composite structure containing the paint mixture and a lint removal method for the paper machine in the papermaking process, for the printing and/or copying process, and for the electric control panels in the papermaking mill to prevent piling and sticking troubles and/or fire breakout caused by lint generated during the operation of paper machine and equipment in the paper converting process. The provided paint mixture and method also reduces paper breakages of the paper machine. The provided paint mixture and method is composed of preparation of a mixture of paint and paper sludge-derived sintered carbonized porous grains and then paint, e.g., machines and/or equipment located after the Yankee dryer, steel pipe handrails in a household papers manufacturing mill.

Abstract: It is aimed to provide a method for decontaminating radiocontaminated grains, the method improving a decontamination degree of radioactive 134Cs and 137Cs. The method for decontaminating radiocontaminated grains includes: a pre-treatment step of mixing radiocontaminated grains and a sodium phosphate-based dispersant; and a decontamination step of mixing the radiocontaminated grains processed by the pre-treatment step and paper sludge-derived sintered carbonized porous grains so as to incorporate radioactive 134Cs and 137Cs of the radiocontaminated grains in the sintered carbonized porous grains.

Abstract: A method for securely and safely storing radiocontaminated waste matter and a container therefor are provided. Radiocontaminated waste matter and PSC are mixed and then retained and stored in a tetragonal cylindrical container tank 1 made of steel sheet, concrete, or PSC-containing concrete, so that the spatial gamma radiation dosage of the environment around the tank 1 becomes about the same as that of an environment or place which receives no fall-out radioactive substances. When a mixture of radiocontaminated waste matter and PSC is ashed, and the ash thus obtained is again mixed with PSC, and then loaded and stored in said container tank, the spatial gamma radiation dosage around said container tank is to be similar to that of an environment or place which receives no fall-out radioactive substances, and simultaneously both 134Cs and 137Cs are decreased, and as a result radiocontaminated waste matter can be securely and safely loaded and stored for a long-period of time.

Abstract: A method for securely and safely storing radiocontaminated waste matter and a container therefor are provided. Radiocontaminated waste matter and PSC are mixed and then retained and stored in a tetragonal cylindrical container tank 1 made of steel sheet, concrete, or PSC-containing concrete, so that the spatial gamma radiation dosage of the environment around the tank 1 becomes about the same as that of an environment or place which receives no fall-out radioactive substances. When a mixture of radiocontaminated waste matter and PSC is ashed, and the ash thus obtained is again mixed with PSC, and then loaded and stored in said container tank, the spatial gamma radiation dosage around said container tank is to be similar to that of an environment or place which receives no fall-out radioactive substances, and simultaneously both 134Cs and 137Cs are decreased, and as a result radiocontaminated waste matter can be securely and safely loaded and stored for a long-period of time.