Synthesis of aluminum tri-polyphosphate anticorrosion pigment from bauxite tailings

Synthesis of β-sialon/Ti(C, N) powders from mineral waste residue via carbothermal reduction nitridation

“…It was indicated that more coke addition was not conducive to the formation of b-sialon, but can produce sialon polytypoids of 12H and 15R. In addition, the phases of SiC were also produced because the carbon in the coke reacted with gaseous SiO via eqn (6). 20 With increase in the addition of coke, there was increase in the formation of SiC phase, as indicated by its intensity in XRD patterns (Fig.…”

“…No b-sialon phase was detected in these samples. It is probably due to the consumption of the silica component in the samples during the formation of SiC via eqn (6). It was indicated that more coke addition was not conducive to the formation of b-sialon, but can produce sialon polytypoids of 12H and 15R.…”

“…In order to solve these issues, the low-grade bauxite or bauxite tailings have been utilized as llers, 3 building materials, 4 refractory materials, 5 and anticorrosive paints. 6 However, few researchers have used low-grade bauxite to synthesize sialon materials with the carbothermal reduction nitridation (CRN) method, which has been the most promising candidate method for low-cost synthesis of sialon materials with waste residue and minerals. [7][8][9] At present, it is commonly known that sialon materials are solid solutions of Si 3 N 4 , in which some of the Si and N atoms are replaced by Al and O, respectively.…”

Polyphosphate recovery by a native Bacillus cereus strain as a direct effect of glyphosate uptake

“…Moreover, purified P in the form of polyphosphate (polyP) can be obtained directly from EBPR biosolids by biological [14] or thermal-chemical methods [15]. This biopolymer can be furtherly used in the synthesis of anticorrosion pigments [16, 17], fish processing [18, 19], and water treatment [20]. So, as global reserves of high-quality phosphate rock are becoming limited and its use by industries continues proliferating, the development of new strategies for recycling P becomes an important issue for future food security [21].…”