Lock Hei Ngu

1.1k total citations · 1 hit paper
37 papers, 766 citations indexed

About

Lock Hei Ngu is a scholar working on Mechanical Engineering, Environmental Engineering and Materials Chemistry. According to data from OpenAlex, Lock Hei Ngu has authored 37 papers receiving a total of 766 indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Mechanical Engineering, 13 papers in Environmental Engineering and 11 papers in Materials Chemistry. Recurrent topics in Lock Hei Ngu's work include Carbon Dioxide Capture Technologies (13 papers), Microbial Applications in Construction Materials (7 papers) and CO2 Sequestration and Geologic Interactions (6 papers). Lock Hei Ngu is often cited by papers focused on Carbon Dioxide Capture Technologies (13 papers), Microbial Applications in Construction Materials (7 papers) and CO2 Sequestration and Geologic Interactions (6 papers). Lock Hei Ngu collaborates with scholars based in Malaysia, Australia and Singapore. Lock Hei Ngu's co-authors include Slyvester Yew Wang Chai, Bing Shen How, Siti Salwa Hashim, Armstrong Ighodalo Omoregie, Dominic Ek Leong Ong, Peter Morin Nissom, Jiuan Jing Chew, Jaka Sunarso, Suryadi Ismadji and Deni Shidqi Khaerudini and has published in prestigious journals such as SHILAP Revista de lepidopterología, Journal of Cleaner Production and Chemical Engineering Journal.

In The Last Decade

Lock Hei Ngu

34 papers receiving 733 citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Review of carbon capture absorbents for CO₂ utilization

2022 145 citations Slyvester Yew Wang Chai, Lock Hei Ngu et al. Greenhouse Gases Science and Technology profile →

Peers

Lock Hei Ngu

CSE

Zezhi Chen China

Abdallah Dindi United Arab Emirates

Ping Ning China

Ivonete Ávila Brazil

Mourad Kharoune Canada

Yunsung Yoo South Korea

Muhammad Imran Rashid Pakistan

Izabela Majchrzak‐Kucęba Poland

T. Kojima Japan

Daniel Sutter Switzerland

Zezhi Chen China

Lock Hei Ngu

302 ×0.9

143 ×0.7

213 ×1.2

236 ×1.6

68 ×0.5

CSE

Citations per year, relative to Lock Hei Ngu Lock Hei Ngu (= 1×) peers Zezhi Chen

Countries citing papers authored by Lock Hei Ngu

Since Specialization

Citations

This map shows the geographic impact of Lock Hei Ngu's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Lock Hei Ngu with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Lock Hei Ngu more than expected).

Fields of papers citing papers by Lock Hei Ngu

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Lock Hei Ngu. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Lock Hei Ngu. The network helps show where Lock Hei Ngu may publish in the future.

Co-authorship network of co-authors of Lock Hei Ngu

This figure shows the co-authorship network connecting the top 25 collaborators of Lock Hei Ngu. A scholar is included among the top collaborators of Lock Hei Ngu based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Lock Hei Ngu. Lock Hei Ngu is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Chai, Slyvester Yew Wang, Bing Shen How, & Lock Hei Ngu. (2025). Elucidation of Potable Water Accelerated Weathering of Limestone for Post‐Combustion Carbon Capture: Correlation, Optimization, Comparative, Kinetic Modelling and Mass Transfer Analysis. Greenhouse Gases Science and Technology. 15(2). 178–196. 1 indexed citations

Chai, Slyvester Yew Wang, et al.. (2024). Utilization of accelerated weathering of limestone captured carbon dioxide (CO2) with cement kiln dust to produce building material. Journal of Cleaner Production. 468. 143047–143047. 7 indexed citations

Chai, Slyvester Yew Wang, et al.. (2024). Accelerated weathering of construction‐grade limestone for CO₂ absorption. Greenhouse Gases Science and Technology. 14(6). 1049–1067. 2 indexed citations

Ngu, Lock Hei, et al.. (2024). Post‐combustion carbon dioxide adsorption of concurrent activated and surface modified palm kernel shell‐derived activated carbon. Greenhouse Gases Science and Technology. 14(3). 492–525.

Chan, Yi Herng, Adrian Chun Minh Loy, Kin Wai Cheah, et al.. (2023). Hydrogen sulfide (H2S) conversion to hydrogen (H2) and value-added chemicals: Progress, challenges and outlook. Chemical Engineering Journal. 458. 141398–141398. 77 indexed citations

Omoregie, Armstrong Ighodalo, Dominic Ek Leong Ong, Lock Hei Ngu, et al.. (2023). Effects of push–pull injection–suction spacing on sand biocementation treatment. Griffith Research Online (Griffith University, Queensland, Australia). 11(1). 28–42. 6 indexed citations

Chew, Jiuan Jing, et al.. (2023). Concurrent activation and surface modification (CAM) process to produce surface-modified palm kernel shell-derived activated carbon (PKSdAC). Biomass Conversion and Biorefinery. 14(24). 32091–32108. 2 indexed citations

Ngu, Lock Hei, et al.. (2022). Engineering graduate attribute attainment measurement models. Australasian journal of engineering education. 27(2). 77–87. 2 indexed citations

Ngu, Lock Hei, et al.. (2022). Techno-economic feasibility study for concurrent activated and modified palm kernel shell–derived activated carbon. Biomass Conversion and Biorefinery. 14(22). 28175–28186. 7 indexed citations

10.

Omoregie, Armstrong Ighodalo, Khalida Muda, & Lock Hei Ngu. (2022). Dairy manure pellets and palm oil mill effluent as alternative nutrient sources in cultivating Sporosarcina pasteurii for calcium carbonate bioprecipitation. Letters in Applied Microbiology. 74(5). 671–683. 9 indexed citations

11.

Ngu, Lock Hei, et al.. (2022). Parametric Study of Concurrent Activation and Surface Modification (CAM) Process for Palm Kernel Shell Derived Activated Carbon. SHILAP Revista de lepidopterología.

12.

Chai, Slyvester Yew Wang, et al.. (2022). Review of CO2 capture in construction-related industry and their utilization. International journal of greenhouse gas control. 119. 103727–103727. 38 indexed citations

13.

Ngu, Lock Hei, et al.. (2021). A review of CO₂ adsorbents performance for different carbon capture technology processes conditions. Greenhouse Gases Science and Technology. 11(5). 1076–1117. 105 indexed citations

14.

Ngu, Lock Hei, et al.. (2021). Correction to: Review of oil palm-derived activated carbon for CO2 capture. Carbon letters. 31(6). 1367–1367. 2 indexed citations

15.

Ngu, Lock Hei, et al.. (2021). Review of oil palm-derived activated carbon for CO2 capture. Carbon letters. 31(2). 201–252. 32 indexed citations

16.

Ngu, Lock Hei, et al.. (2020). The production cost analysis of oil palm waste activated carbon: a pilot‐scale evaluation. Greenhouse Gases Science and Technology. 10(5). 999–1026. 45 indexed citations

17.

Ngu, Lock Hei, et al.. (2019). Lab‐scale atmospheric CO₂ absorption for calcium carbonate precipitation in sand. Greenhouse Gases Science and Technology. 9(3). 519–528. 17 indexed citations

18.

Omoregie, Armstrong Ighodalo, et al.. (2016). Ureolytic bacteria isolated from Sarawak limestone caves show high urease enzyme activity comparable to that of Sporosarcina pasteurii (DSM 33). Malaysian Journal of Microbiology. 23 indexed citations

19.

Ngu, Lock Hei, et al.. (2012). Optimization of Circular Plate Separators with Cross Flow for Removal of Oil Droplets and Solid Particles. Water Environment Research. 84(4). 299–304. 4 indexed citations

20.

Lai, Sai Hin, et al.. (2009). Quantitative dam break analysis on a reservoir earth dam. International Journal of Environmental Science and Technology. 6(2). 203–210. 17 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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