- UHRA Home
- Browsing by Author
Browsing by Author "Kesieme, Uchenna"
Now showing items 1-6 of 6
-
Assessment of full life-cycle air emissions of alternative shipping fuels
Gilbert, Paul; Walsh, Conor; Traut, Michael; Kesieme, Uchenna; Pazouki, Kayvan; Murphy, Alan (2018-01-20)There is a need for alternative fuels in the shipping sector for two main motivations: to deliver a reduction in local pollutants and comply with existing regulation; and to mitigate climate change and cut greenhouse gas ... -
Assessment of supply interruption of rhenium, recycling, processing sources and technologies
Kesieme, Uchenna; Chrysanthou, Andreas; Catulli, Maurizio (2019-04-16)Rhenium is a unique, valuable and extremely rare chemical element currently used as an alloying element in high-temperature superalloys for aerospace and industrial gas-fired turbines and also as a catalyst in petrochemical ... -
Attributional life cycle assessment of biofuels for shipping: addressing alternative geographical locations and cultivation Systems
Kesieme, Uchenna; Pazouki, Kayvan; Murphy, Alan; Chrysanthou, Andreas (2019-04-01)The purpose of this study is to evaluate a life cycle assessment of straight vegetable oil (SVO) and biodiesel addressing alternative upstream pathways. The pathways are SVO and biodiesel produced in the United Kingdom ... -
Biofuel as an alternative shipping fuel : technological, environmental and economic assessment
Kesieme, Uchenna; Pazouki, Kayvan; Murphy, Alan; Chrysanthou, Andreas (2019-03-05)Fossil derived fuels available for application within the maritime sector have been dominated by heavy fuel oil (HFO), which is conventionally used in low speed (main) engines, and more refined fuels such as marine diesel ... -
The optimal use of tris-2-ethylhexylamine to recover hydrochloric acid and metals from leach solutions and comparison with other extractants
Kesieme, Uchenna; Chrysanthou, Andreas; Catulli, Maurizio; Cheng, Chu Yong (2018-05-01)This paper describes the use of TEHA for HCl recovery from a leach solution generated by a hydrometallurgical plant. Four organic extractants were tested including TEHA, Alamine 336, Cyanex 923 and TBP. TEHA organic system ... -
A review of acid recovery from acidic mining waste solutions using solvent extraction
Kesieme, Uchenna; Chrysanthou, Andreas; Catulli, Maurizio; Cheng, Chu Yong (2018-12-01)The minerals industry is increasingly being forced by regulatory and cost pressures to reduce the amount of liquid acidic waste they produce. This requires a strong focus on waste reduction by recycling, regeneration and ...