Use of anion-exchanging mineral capable of reversely binding NO

• Main Authors: JOSEFRISTIAN BUHL, PAUL WEWARD, HERMANN KUHLMANN
• Format: Patent
• Language: Chinese; English
• Published: 18.02.2004
• Edition: 7
• Subjects: ADHESIVES; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS THEREOF; DYES; FERTILISERS; FERTILISERS CHARACTERISED BY THEIR FORM; FERTILISERS PRODUCING CARBON DIOXIDE; INORGANIC CHEMISTRY; INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; MANUFACTURE THEREOF; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS; NATURAL RESINS; NON-METALLIC ELEMENTS; PAINTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; POLISHES; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

本发明涉及能够可逆地结合(即交换)阴离子、特别是NO#-[3]#+[-]的矿物，其可作为肥料和土壤改良剂，或者用于净化和处理水、特别是除去硝酸盐。所述矿物优选是天然或合成的混合价金属-金属-羟基盐，例如层状复合氢氧化物(LDH)，在其中间层中包含可交换地结合的阴离子。本发明还涉及合成特别合适的LDH的方法。 Minerals that reversibly fix ions, in particular NO3-, i.e. that can exchange one anion for another anion can be used as fertilizers and soil conditioners, as well as for the purification and treatment of water, particularly for the elimination of nitrate. The minerals used are preferably natural or synthetic mixed value metal-metal-hydroxyl salts, e.g. layered double hydroxides (LDHs) that contain exchangeable fixed anions in the intermediary layers. A method for producing anion-exchanging minerals, particularly suitable LDHs, and their use as fertilizers and soil conditioners and for the purification and treatment of water.