Dicyandiamide combined with phosphogypsum or superphosphate could enhance mitigation of the total greenhouse gas (37.46% and 29.55%) and NH 3 emissions (18.28% and 21.48%). The combination of dicyandiamide and phosphogypsum exhibits the most pronounced emission reduction effect, simultaneously decreasing the NH 3, …
Phosphogypsum (PG) is a radioactive industrial by-product produced in large quantities when processing phosphate ores into fertilizers. With rapid growth of high concentration phosphate and compound fertilizers production in China, PG production is increasing every year. Phosphogypsum is usually stored in such a way that it not only …
Superphosphate and phosphogypsum affected microbial community succession. • Superphosphate and phosphogypsum changed bacterial and fungal network structures. • pH was the main factor that affected bacterial and fungal communities. • Phosphogypsum had a greater effect on microorganisms than superphosphate.
The finding implicates that CaSSP application could be a potential strategy for N2O mitigation in manure windrow composting, and the revealed microbial mechanism …
Phosphogypsum (PG) is a hazardous industrial solid waste product from the wet phosphate industry 1,2.The widespread deposition of that fine, light- to dark-grey, powder with a slight odor and ...
DOI: 10.1016/j.biortech.2018.09.023 Corpus ID: 52879266; Effects of phosphogypsum, superphosphate, and dicyandiamide on gaseous emission and compost quality during sewage sludge composting.
However, the effect of phosphogypsum on phosphate fertilization efficiency is still unclear. A long-term field experiment was performed on an Oxisol in Parana State, Brazil to evaluate the effects of triple superphosphate (TSP) and phosphogypsum application rates on nutrition and grain yield of soybean, wheat, and black oat under no-till.
It has been demonstrated that introducing chemical additives, e.g. dicyandiamide (DCD), phosphogypsum (PPG) and superphosphate (SSP) is an effective …
Previous studies revealed that superphosphate fertilizer (SSP) as an additive in compost can reduce the nitrogen loss and improve the effectiveness of phosphorus during composting. However, few studies have explored the influence of adding SSP with high levels on ammonia and greenhouse gas emission and the suitable …
According to Yuan et al. (2018), phosphogypsum and dicyandiamide can reduce methane (CH 4) and N 2 O emissions by 75.6% and 86.4%, respectively; however, the NH 3 emission can increase by 22.0%. Jiang …
Phosphogypsum and superphosphate were applied with the same amount of phosphorus (5% of the initial total nitrogen, molar basis) or weight (10% of initial dry matter) and compared to a control treatment without additives. Results show that phosphorous additives could effectively conserve nitrogen.
Single superphosphate (SSP) was the first commercial mineral fertilizer, and it led to the development of the modern plant nutrient industry. ... (MCP, also called calcium dihydrogen phosphate) and gypsum, no problems arise with phosphogypsum byproduct disposal unlike the manufacture of other common P fertilizers. SSP is also known as ordinary ...
Phosphogypsum and superphosphate had no negative effects on compost maturity, although superphosphate inhibited the temperature rise in the first few days. The addition of phosphogypsum and superphosphate drastically reduced CH4 emissions (by 85.8% and 80.5%, respectively) and decreased NH3 emissions (by 23.5% and 18.9%, …
Dicyandiamide combined with phosphogypsum or superphosphate could enhance mitigation of the total greenhouse gas (29.55 %–37.46 %) and NH 3 emission (18.28 %–21.48 %), which was mainly due to lower pH value and phosphoric acid composition. The combination of dicyandiamide and phosphogypsum exhibited the most …
Phosphogypsum is a waste by-product from the processing of phosphate rock in plants producing phosphoric acid and phosphate fertilizers, such as superphosphate. The wet chemical phosphoric acid treatment process, or 'wet process', in which phosphate ore is digested with sulfuric acid, is widely used to produce phosphoric …
A measurement of the radioactivity content of phosphate ore material, phosphatic fertilizer (superphosphate), and by-product phosphogypsum in the Abu-Zaabal phosphate plant, Egypt, has been carried out. According to the results of gamma-ray spectroscopy analysis, 238U was found in concentrations of …
This study investigated the effects of phosphogypsum, superphosphate, and dicyandiamide on gaseous emission and compost quality during sewage sludge composting. Results showed that phosphogypsum ...
DOI: 10.1016/j.wasman.2014.11.012 Corpus ID: 9399950; Effects of phosphogypsum and superphosphate on compost maturity and gaseous emissions during kitchen waste composting. @article{Yang2015EffectsOP, title={Effects of phosphogypsum and superphosphate on compost maturity and gaseous emissions during kitchen waste …
Dicyandiamide and superphosphate increased the seed germination index (145.55 %). • Dicyandiamide addition reduces N 2 O emissions by 32 % during composting.. Phosphorus additives decrease NH 3 and CH 4 emissions by 20 % and 38 %, respectively.. Combining dicyandiamide and phosphogypsum effectively reduces total GHG emissions.
During the process of phosphoric acid production, the potentially hazardous waste by-product phosphogypsum, hydrated calcium sulfate, is produced at a quantity 5-times that of phosphoric acid 110,143.
A measurement of the radioactivity content of phosphate ore material, phosphatic fertilizer (superphosphate), and by-product phosphogypsum in the Abu-Zaabal phosphate plant, Egypt, has been carried out.
Phosphogypsum (PG) is a calcium sulphate dihydrate and a by-product of the phosphate fertilizer industry. It is produced in huge quantities (300 MT/year), but only 15% of the PG produced is recycled. ... (2015) Effects of phosphogypsum and superphosphate on compost maturity and gaseous emissions during kitchen waste …
DOI: 10.1016/j.jenvman.2020.111560 Corpus ID: 226305349; Microbial succession and molecular ecological networks response to the addition of superphosphate and phosphogypsum during swine manure composting.
This study investigated the effects of phosphogypsum and superphosphate on the maturity and gaseous emissions of composting kitchen waste. Two amended compost treatments were conducted using phosphogypsum and superphosphate as additives with the addition of 10% of initial raw materials (dry weight). A control treatment was also …
Phosphogypsum and superphosphate were applied with the same amount of phosphorus (5% of the initial total nitrogen, molar basis) or weight (10% of initial dry …
This study investigated the effects of the combination of phosphogypsum with calcium oxide (PPG + CaO), superphosphate with calcium oxide (SSP + CaO) and zeolite (Zeolite) …
Phosphogypsum and superphosphate were applied with the same amount of phosphorus (5% of the initial total nitrogen, molar basis) or weight (10% of initial dry matter) and compared to a control ...
Phosphogypsum, a waste by-product from wet-acid production of phosphoric acid, contains variable levels of metal impurities (Cd, Zn, barium (Ba)) and radionuclides (mainly …
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This study investigated the effects of dicyandiamide, phosphogypsum and superphosphate on greenhouse gas emissions and compost maturity during pig manure composting. The results indicated that the addition of dicyandiamide and phosphorus additives had no negative effect on organic matter degradation, and could improve the …