Supergene sulphuric acid speleogenesis and the origin of hypogene caves: evidence from the Northern Pennines, UK
Sign Up to like & getrecommendations! Published in 2020 at "Earth Surface Processes and Landforms"
DOI: 10.1002/esp.5037
Abstract: The maze caves of the Northern Pennines are rectilinear joint‐controlled networks of predominantly tall vertical rifts developed on one level towards the top of a ~20 m thick limestone bed; they were all intersected by underground… read more here.
Keywords: northern pennines; sulphuric acid; supergene sulphuric; hypogene ... See more keywords
Sulphuric acid geofluid contribution on thermal carbonate coastal springs (Italy)
Sign Up to like & getrecommendations! Published in 2018 at "Environmental Earth Sciences"
DOI: 10.1007/s12665-018-7688-8
Abstract: Hypogenic caves, developed by sulphuric acid speleogenesis, are known all over the world among which the Santa Cesarea Terme caves have been included. They are four submerged caves, located along a coastal carbonate sector in… read more here.
Keywords: geofluid contribution; sulphuric acid; acid geofluid; coastal springs ... See more keywords
Protection of Metallic Copper from the Attack of Sulphuric Acid Using HDMMA, a Schiff Base Derived from l-Cysteine and 2-Hydroxy-1-naphthaldehyde
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Bio- and Tribo-Corrosion"
DOI: 10.1007/s40735-018-0199-z
Abstract: Amino acids and its Schiff bases have been recognized as green corrosion inhibitors mainly due to its non-toxic nature and biodegradable properties. Considering its unique nature and significant contribution in corrosion inhibition, studies were undertaken… read more here.
Keywords: sulphuric acid; metallic copper; base derived; derived cysteine ... See more keywords
Performance of alkali-activated slag concrete against sulphuric acid attack
Sign Up to like & getrecommendations! Published in 2018 at "Asian Journal of Civil Engineering"
DOI: 10.1007/s42107-018-0028-1
Abstract: This study aims to investigate the performance of alkali-activated slag concrete (AASC) and conventional concrete (CC) against sulphuric acid attack. From the preliminary investigations conducted on 18 trial mixes of AASC, four AASC mixes (S–0.4–2.33–16M,… read more here.
Keywords: acid attack; alkali activated; sulphuric acid; performance alkali ... See more keywords
Comparison of the impacts of acid and nitrogen additions on carbon fluxes in European conifer and broadleaf forests.
Sign Up to like & getrecommendations! Published in 2018 at "Environmental pollution"
DOI: 10.1016/j.envpol.2018.03.081
Abstract: Increased reactive nitrogen (N) loadings to terrestrial ecosystems are believed to have positive effects on ecosystem carbon (C) sequestration. Global "hot spots" of N deposition are often associated with currently or formerly high deposition of… read more here.
Keywords: comparison impacts; sulphuric acid; addition; soil ... See more keywords
Structurally controlled synthesis of calcium sulphate dihydrate from industrial wastes of spent sulphuric acid and limestone
Sign Up to like & getrecommendations! Published in 2020 at "Environmental Technology and Innovation"
DOI: 10.1016/j.eti.2019.100582
Abstract: Abstract All types of gypsum binders are obtained mainly from the natural gypsum and man-made products. As a sustainable analogue of these materials, synthetic gypsum as a product of spent dilute sulphuric acid and calcium… read more here.
Keywords: calcium; sulphate dihydrate; sulphuric acid; calcium sulphate ... See more keywords
Recovery of dimethylglyoxime (DMG) from Ni-DMG complexes
Sign Up to like & getrecommendations! Published in 2018 at "Hydrometallurgy"
DOI: 10.1016/j.hydromet.2018.01.014
Abstract: Abstract Dimethylglyoxime (DMG) is an analytical reagent used to precipitate Ni from its aqueous solution. The process is very efficient for Ni recovery in terms of selectivity and completeness but hardly adopted industrially. The reason… read more here.
Keywords: recovery; sulphuric acid; dmg; dimethylglyoxime dmg ... See more keywords
Reaction mechanism of fluoride conversion into BF4− during sulphuric acid leaching of roasted bastnaesite
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Rare Earths"
DOI: 10.1016/j.jre.2020.03.005
Abstract: Abstract The bastnaesite used in hydrometallurgy usually contains 7%–11% fluorine, and the conversion of fluorine into high-value products is the key to achieving green production of rare earths and improving the comprehensive utilization of bastnaesite.… read more here.
Keywords: sulphuric acid; mechanism; acid leaching; conversion ... See more keywords
Extraction of indium(III) from sulphuric acid medium by the ionic liquid (PJMTH+HSO4−)
Sign Up to like & getrecommendations! Published in 2019 at "Separation and Purification Technology"
DOI: 10.1016/j.seppur.2018.10.051
Abstract: Abstract The extraction of indium(III) from acidic sulphuric solution by the ionic liquid (PJMTH+HSO4−) was investigated. This ionic liquid was generated by reaction of the primary amine Primene JMT (PJMT) and sulphuric acid solutions. The… read more here.
Keywords: sulphuric acid; ionic liquid; extraction indium; extraction ... See more keywords
A greatly improved procedure for the synthesis of an antibiotic-drug candidate 2,4-diacetylphloroglucinol over silica sulphuric acid catalyst: multivariate optimisation and environmental assessment protocol comparison by metrics
Sign Up to like & getrecommendations! Published in 2020 at "RSC Advances"
DOI: 10.1039/d0ra05424k
Abstract: Efforts toward the development of a straightforward greener Gram-scale synthesis of the antibiotic compound 2,4-diacetylphloroglucinol (DAPG) have been developed. This beneficial procedure was accomplished through the Friedel–Crafts acylation of phloroglucinol over inexpensive heterogeneous silica sulphuric… read more here.
Keywords: silica sulphuric; sulphuric acid; environmental assessment; synthesis antibiotic ... See more keywords
Decomposition of monazite concentrate in sulphuric acid
Sign Up to like & getrecommendations! Published in 2018 at "Canadian Metallurgical Quarterly"
DOI: 10.1080/00084433.2018.1478490
Abstract: ABSTRACT A sulphuric acid bake-leach process was investigated for the extraction of rare earth elements (REEs), uranium, and thorium from a monazite concentrate. X-ray diffraction analysis showed the formation of water-soluble sulphates that readily dissolved… read more here.
Keywords: extraction; sulphuric acid; thorium; concentrate ... See more keywords