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·Exposure to microplastics as well as the chemicals added to plastics during processing harm our health Stat Microplastics have been found in 90% of bottled water and 83% of tap water Many chemicals used in plastics are known endocrine disruptors causing reproductive issues such as infertility hormonal imbalances and greater risk of cancer
·Abstract Phosphogypsum PG CaSO 4 ·2H 2 O is a waste product generated by the phosphate industry World production of this waste exceeds 200 million tonnes per year PG discharged into the sea watercourses or in wilderness stocks contains toxic elements harmful to ecosystems and human health including heavy metals and radionuclides and there
·Phosphogypsum PG wastes including solid state PG and liquid state PG leachate are industrial byproducts generated during the production of phosphoric acid It is of great concern due to the large scale product accumulation and environmental and geological hazards Harmless treatment and green chemical resource utilization techniques emerge to be
·All treatments were dried and then pyrolyzed at high temperature to remove organic matter The pyrolysis loss of raw PG and TG were and % respectively Figures 3C D After mixing with the YPD medium the pyrolysis loss of TG5/10 and PG5/10 were % and % respectively indicating that TG and PG have certain
·Phosphogypsum PG is the primary byproduct generated during the production of phosphoric acid an intermediate product in phosphate fertilizer production from calcium phosphate apatite ore As a result these wastes may be harmful to the environment and in the long term induce health problems to local populations
·The harm of gypsum to the environment was mainly caused by heavy metal elements of As Cd Cr Hg Using the risk exposure model recommended by the United States Environmental Protection Agency it was found that there were carcinogenic risks for adults and children in soil intake due to As and Cr pollution
·Cemented backfill is an effective means to increase ore recovery improve safety conditions and reduce surface disposal of solid wastes As a typical solid waste phosphogypsum PG is the by
·High purity CaCO3 via a facile two step dissolution carbonation coprecipitation procedure using NH4Cl NH4OH and CO2 with phosphogypsum PG as the raw material was successfully produced in the present work The impact of different experimental parameters on dissolution and carbonation processes was discussed herein The optimum amount of
·Efficient removal of phosphate impurities in waste phosphogypsum for the production of Science of the Total Environment IF Pub Date 2021 03 19 DOI /
·Phosphogypsum an industrial solid waste produced in wet phosphoric acid production is difficult to be utilized due to the harmful impurities such as phosphorus and fluorine In this study lime neutralization process was introduced to remove soluble phosphorus and soluble fluorine from phosphogypsum in presence of polyacrylamide The effects of
·Phosphogypsum is stored in the open areas thereby discharging such toxic contaminants as fluorine and various water soluble and insoluble oxides into the environment As a result it inflicts harm on all living organisms and there is reasonable concern regarding the arising environmental issues
·The harm of gypsum to the environment was mainly caused by heavy metal elements of As Cd Cr Hg Using the risk exposure model recommended by the United States Environmental Protection Agency it was found that there were carcinogenic risks for adults and children in soil intake due to As and Cr pollution Phosphogypsum contained harmful
·Soil salinization is a limiting factor affecting food security and land use efficiency and it has become one of the major environmental and socio economic issues worldwide Cui et al 2021 According to the statistics up to the present date >424 million hectares of topsoil 0 30 cm and 833 million hectares of subsoil 30 100 cm are suffering
·This novel technology could be employed as a reliable and environment friendly means of recycling phosphogypsum in the large scale preparation of calcium sulfoaluminate cement View Show abstract
·Red mud RM and phosphogypsum PG are two typical industrial waste around the world which are being generated and landfilled massively per year This study investigates the collaborative effects of RM and PG on geotechnical properties of cement stabilized dredged clay Unconfined compressive strength UCS tests isotropically
article{Zhou2021EffectOP title={Effect of phosphogypsum on the properties of magnesium phosphate cement paste with low magnesium to phosphate ratio } author={Bo Zhou and Haiyan Zhu and Shengye Xu and Guanhong Du and Shi Shi and Min Liu and Feng Xing and Jun Ren} journal={The Science of the total environment} year={2021} volume={798
·Five clusters were formed a red cluster phosphogypsum recycling in the construction industry; green cluster radiation pollution problem of phosphogypsum and phosphate fertilizers; yellow cluster
·Phosphogypsum PG is a by product produced during the wet process of phosphoric acid H3PO4 production from natural phosphate rocks Approximately 4 6 tons of PG is produced per ton of
·However the application performance of phosphogypsum is often significantly inferior to that of natural gypsum due to harmful impurities such as P F and organic matter [8][9] [10] [11][12][13
Effect of particle size weathering and moisture content on the 222Rn emanation coefficient epsilon for phosphogypsum was determined and it was found that exhalation would likely be reduced due to slow diffusion through porosity of saturated phosphogyPSum
·1 School of Metallurgy and Environment Central South University Changsha 410083 China; 2 School of Resources Environment and Materials Guangxi University Nanning 530004 China Received 23 May 2020; accepted 18 February 2021 Abstract A column experiment was conducted to investigate the effect of phosphogypsum PG on the saline
·This study contributes to sustainable construction practices by exploring the use of phosphogypsum a commonly discarded byproduct in the production of recycled aggregates Addressing both environmental and economic aspects of sustainability we investigate the feasibility of employing phosphogypsum as a primary raw material in collaboration with
·The leachate from waste phosphogypsum contains substantial amounts of phosphorus fluorine ammonia nitrogen NH 3 N and magnesium ions which cause soil and water pollution and have great resource utilization this study quicklime and alkali were used to treat waste phosphogypsum leachate using step by step precipitation with precisely
·Pollution evaluation on the salt marshes under the phosphogypsum stacks of Huelva due to deep leachates Author links open overlay panel Jos Luis Guerrero a Isidoro Gutirrez Álvarez a Fernando which produce an important impact in the surrounding environment On the other hand this ecosystem it is affected by acid mine drainage AMD
The improper disposal of large amounts of phosphogypsum generated during the production process of the phosphorus chemical industry PCI still exists The leachate formed by phosphogypsum stockpiles could pose a threat to the ecological environment and human health Nevertheless information regard
