https://bura.brunel.ac.uk/handle/2438/8620 2026-08-21T10:46:24Z 2026-08-21T10:46:24Z Leonard, William McClure, Dale D Ng, Kok Siew Yang, Aidong https://bura.brunel.ac.uk/handle/2438/33733 2026-08-21T10:29:28Z 2026-08-12T00:00:00Z

Title: Potential of MicroalgalBiomass Production in CoastalDeserts for Carbon Dioxide Removal Authors: Leonard, William; McClure, Dale D; Ng, Kok Siew; Yang, Aidong Abstract: High photosynthetic yields and the ability to grow without fresh water make microalgae interesting mechanisms for carbon dioxide removal (CDR). We characterize two CDR systems which grow microalgae in seawater in coastal deserts─microalgal bioenergy with carbon capture and storage and microalgal biomass burial─and evaluate their potential when using carbon sourced from the atmosphere or ocean to meet CDR objectives via a comparison with direct air carbon capture and storage (DACCS). By deriving and validating a theoretical model of chemically enhanced carbon dioxide mass transfer, we identify the importance of gas–liquid mass transfer into raceway ponds as limiting microalgal productivities and determining technoeconomic viability. Our analysis shows that, while microalgal CDR cannot compete with DACCS in the areal productivity of removals, net removal costs with marine carbon supply are only slightly higher than DACCS with prospects for parity. Though such outcomes may not yet support the use of microalgal biomass for CDR, the carbon supply apparatuses outlined and the theoretical models accompanying them can inform ongoing research into microalgal cultivation without carbon addition for diverse applications. Description: Data Availability: Data and code supporting the findings of this work are available upon request from the corresponding author.; Supporting Information The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acs.est.6c08729. Supplementary methods comprising CDR configurations (Sections S1-S3), albedo (Section S4; Fig S1), carbon and light limited growth (Section S5), water supply pipelines (Section S6), techno-economic equations (Section S7), nominal analysis parameters (Section S8; Tables S1-S3), sensitivity and uncertainty analysis (Sections S9, S10; Table S4), PV-mBB and PV-DACCS optimisation (Section S11), mass transfer modelling (Sections S12-S14; Table S5), and pH measurements (Section S15; Fig S2); Supplementary results comprising mass transfer (Sections S16, S17, S24; Figs S3, S9), burial site capacity (Section S18), comparison of alternative designs (Sections S19, S20; Fig S4), productivity, costs and comparison with literature (Sections S21-S23), and mass transfer enhancement options (Sections S25-S29); Supplementary discussion concerning biomass harvesting, nutrient supply and land use (Sections S30-S32; Fig S5-S8), mBECCS-sale and long-term mCDR perspectives (Section S33; Fig S10), contextualization of the optimistic scenario and limitations (Sections S34, S35) (PDF: https://ndownloader.figstatic.com/files/67474268).

2026-08-12T00:00:00Z Dong, Shuo Feng, Yizhuo Nagarajan, Raghul Biswal, Abinash Jiang, Changzhao Wang, Xinyan Zhao, Hua https://bura.brunel.ac.uk/handle/2438/33732 2026-08-21T09:35:27Z 2026-08-19T00:00:00Z

Title: Experimental characterisation of hollow-cone hydrogen jet behaviour under engine-like conditions Authors: Dong, Shuo; Feng, Yizhuo; Nagarajan, Raghul; Biswal, Abinash; Jiang, Changzhao; Wang, Xinyan; Zhao, Hua Abstract: Internal combustion engines equipped with direct injection (DI) of hydrogen represent a promising pathway toward carbon-neutral transportation. This work presents a systematic experimental investigation of hollow-cone hydrogen jet dynamics generated by an outward-opening injector using high-speed schlieren imaging, integrating jet momentum measurements. The hydrogen jet evolution is identified as a two-stage process, i.e., near-nozzle underexpanded structures dominated by pressure-ratio effects and a subsequent self-similar dense-jet stage governed by momentum. The pressure-ratio-dominant and momentum-dominant scaling laws are evaluated for these two stages, clarifying the governing mechanisms of hollow-cone hydrogen jet development. Furthermore, a quantitative evaluation of hydrogen mixing behaviour is conducted with a constant injected mass under different injection pressures (Pinj). The results show that Pinj has a limited influence on jet shapes during injection, whereas higher Pinj improves spatial mixture homogeneity. The difference in homogeneity can be reduced by allowing a longer mixing time after the end of injection. Description: Supplementary data are available online at: https://www.sciencedirect.com/science/article/pii/S0360319926037195#appsec1 .

2026-08-19T00:00:00Z Don Merenchige, Upendra Arjeewani Weerathunga Wang, Bin Ji, Shouxun https://bura.brunel.ac.uk/handle/2438/33730 2026-08-20T02:01:27Z 2026-06-24T00:00:00Z

Title: Correction: From corporate greenhouse gas inventories to design-relevant LCAs: an integrated framework for industrial decarbonization Authors: Don Merenchige, Upendra Arjeewani Weerathunga; Wang, Bin; Ji, Shouxun Abstract: During typesetting of this article in place of Fig. 3, Fig. 4 was duplicated. The missing Fig. 3 is shown below: Example of data collection granularity across emission sources, illustrating hierarchical categorization from emission source to client level. The framework enables detailed activity data collection, for example, raw materials are traced from material type and grade to product type, accurate emission allocation across both organizational and product-level inventories The original article has been corrected. Description: Data availability: The data supporting the findings of this case study were provided by the participating organization under confidentiality agreements. As such, the data are not publicly available in accordance with the organization’s data disclosure policy.; The corrected manuscript is archived below (59 pp.) under an embargo period of 12 months.

2026-06-24T00:00:00Z Wang, Xiang Li, Liang Tassou, Savvas A https://bura.brunel.ac.uk/handle/2438/33729 2026-08-20T02:00:56Z 2026-07-11T00:00:00Z

Title: Pressure-regulated pool boiling for lithium-ion batteries based on a thermo-lifetime-economic coupling framework Authors: Wang, Xiang; Li, Liang; Tassou, Savvas A Abstract: Pool boiling cooling offers strong potential for lithium-ion battery thermal management due to its high-efficiency phase-change heat transfer. However, most existing studies are limited to atmospheric pressure, and the coupled effects of pressure on thermal behaviour, battery lifetime, and economic performance remain unclear. In this study, a thermo-lifetime-economic coupling model is developed and experimentally validated through pressure-controlled pool boiling cooling of a battery module over a pressure range of 20–100 kPa. The results show that pool boiling significantly outperforms natural air-cooling, reducing the maximum temperature from 88.8 °C to 45.6 °C (48.6%) and the temperature difference from 9.3 °C to 3.1 °C (66.7%) at 2.5C. Further pressure reduction enhances thermal performance by lowering the saturation temperature and promoting earlier nucleate boiling. When the pressure decreases from 100 kPa to 20 kPa, the maximum temperature and temperature difference are further reduced by 26.3% and 38.7%, respectively, leading to a lifetime improvement of up to 65.1%. However, this improvement is accompanied by a substantial increase in auxiliary power consumption, which rises by more than 14.6 times, resulting in a strong thermo-economic trade-off with diminishing returns at low pressures. Furthermore, system scale critically affects economic feasibility. Pressure reduction increases cost at small scales but becomes favourable beyond a critical scale due to the growing contribution of lifetime-related cost. These results show that pressure regulation can improve pool boiling battery cooling, but the operating pressure should balance thermal performance, lifetime, and energy consumption. Description: Data availability: Data will be made available on request.

2026-07-11T00:00:00Z