PMID- 36063788 OWN - NLM STAT- MEDLINE DCOM- 20220928 LR - 20220928 IS - 1873-2828 (Electronic) IS - 1350-4177 (Print) IS - 1350-4177 (Linking) VI - 89 DP - 2022 Sep TI - Removal of single and dual ring thiophene's from dodecane using cavitation based processes. PG - 106148 LID - S1350-4177(22)00244-9 [pii] LID - 10.1016/j.ultsonch.2022.106148 [doi] LID - 106148 AB - Utilising cavitation for enhancing oxidative desulphurization has been investigated for nearly-two decades with recent investigations shifting focus from low-capacity acoustic cavitation (AC) to scalable hydrodynamic cavitation (HC). This work focuses on developing a viable means for removing thiophene's from fuels. In the first phase of this work, use of vortex based HC devices for removal of single and dual ring thiophenes from dodecane was investigated. HC was shown to be able to remove single ring thiophene from dodecane without using any external catalyst or additives. However, in absence of catalyst or additives, it was not possible to remove dual ring thiophenes such as dibenzothiophene using HC. Therefore, in the second phase of this work, various strategies based on use of catalyst or additives to augment cavitation based process were investigated. AC based experiments were opted for shortlisting suitable catalysts and additives for intensifying cavitation based processes. The influence of using oxidant (H(2)O(2)) and carboxylic acid catalysts on efficacy of removal of dual ring thiophenes is presented. Several conditions were tested, and the optimal volumetric ratios of 0.95 v/v % H(2)O(2) and 6.25 v/v % HCOOH was identified and utilised throughout the remainder of the study. Regeneration of extractant which accumulates oxidised sulphur species from dodecane was also investigated using AC. The additives and process conditions reported in this work are useful for enhancing desulphurization performance. CI - Copyright (c) 2022 The Author(s). Published by Elsevier B.V. All rights reserved. FAU - Delaney, Peter AU - Delaney P AD - School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast BT9 5AG, UK. FAU - Sarvothaman, Varaha P AU - Sarvothaman VP AD - School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast BT9 5AG, UK. FAU - Colgan, Ronan AU - Colgan R AD - School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast BT9 5AG, UK. FAU - Nagarajan, Sanjay AU - Nagarajan S AD - School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast BT9 5AG, UK; Sustainable Environment Research Centre, University of South Wales, Pontypridd CF37 1DL, UK. FAU - Deshmukh, Gunjan AU - Deshmukh G AD - School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast BT9 5AG, UK. FAU - Rooney, David AU - Rooney D AD - School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast BT9 5AG, UK. FAU - Robertson, Peter K J AU - Robertson PKJ AD - School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast BT9 5AG, UK. FAU - Ranade, Vivek V AU - Ranade VV AD - School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast BT9 5AG, UK; Bernal Institute, University of Limerick, Limerick, Ireland. Electronic address: Vivek.Ranade@ul.ie. LA - eng PT - Journal Article DEP - 20220829 PL - Netherlands TA - Ultrason Sonochem JT - Ultrasonics sonochemistry JID - 9433356 RN - 0 (Alkanes) RN - 0 (Carboxylic Acids) RN - 0 (Oxidants) RN - 0 (Thiophenes) RN - 11A386X1QH (n-dodecane) RN - 70FD1KFU70 (Sulfur) RN - BBX060AN9V (Hydrogen Peroxide) SB - IM MH - Alkanes MH - Carboxylic Acids MH - *Hydrogen Peroxide MH - Oxidants MH - *Sulfur MH - Thiophenes PMC - PMC9463457 OTO - NOTNLM OT - Acoustic OT - Cavitation OT - Hydrodynamic OT - Intensification OT - Oxidative desulphurization COIS- Declaration of Competing Interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Vivek V. Ranade reports a relationship with VIVIRA Process Technologies Pvt. ltd. that includes: board membership. EDAT- 2022/09/06 06:00 MHDA- 2022/09/28 06:00 PMCR- 2022/08/29 CRDT- 2022/09/05 18:29 PHST- 2022/07/18 00:00 [received] PHST- 2022/08/24 00:00 [revised] PHST- 2022/08/26 00:00 [accepted] PHST- 2022/09/06 06:00 [pubmed] PHST- 2022/09/28 06:00 [medline] PHST- 2022/09/05 18:29 [entrez] PHST- 2022/08/29 00:00 [pmc-release] AID - S1350-4177(22)00244-9 [pii] AID - 106148 [pii] AID - 10.1016/j.ultsonch.2022.106148 [doi] PST - ppublish SO - Ultrason Sonochem. 2022 Sep;89:106148. doi: 10.1016/j.ultsonch.2022.106148. Epub 2022 Aug 29.