| Traffic impacts on PM2. 5 air quality in Nairobi, Kenya PL Kinney, MG Gichuru, N Volavka-Close, N Ngo, PK Ndiba, A Law, ... Environmental science & policy 14 (4), 369-378, 2011 | 222 | 2011 |
| Banana pith as a natural coagulant for polluted river water B Kakoi, JW Kaluli, P Ndiba, G Thiong’o Ecological engineering 95, 699-705, 2016 | 172 | 2016 |
| Optimization of Maerua Decumbent bio-coagulant in paint industry wastewater treatment with response surface methodology B Kakoi, JW Kaluli, P Ndiba, G Thiong'o Journal of Cleaner Production 164, 1124-1134, 2017 | 94 | 2017 |
| Heavy metal immobilization through phosphate and thermal treatment of dredged sediments P Ndiba, L Axe, T Boonfueng Environmental Science & Technology 42 (3), 920-926, 2008 | 83 | 2008 |
| Zn sorption mechanisms onto sheathed Leptothrix discophora and the impact of the nanoparticulate biogenic Mn oxide coating T Boonfueng, L Axe, N Yee, D Hahn, PK Ndiba Journal of colloid and interface science 333 (2), 439-447, 2009 | 48 | 2009 |
| Characterization of water hyacinth (E. crassipes) from Lake Victoria and ruminal slaughterhouse waste as co-substrates in biogas production EA Omondi, PK Ndiba, PG Njuru SN Applied Sciences 1, 1-10, 2019 | 41 | 2019 |
| High airborne black carbon concentrations measured near roadways in Nairobi, Kenya MJ Gatari, PL Kinney, B Yan, E Sclar, N Volavka-Close, NS Ngo, ... Transportation Research Part D: Transport and Environment 68, 99-109, 2019 | 27 | 2019 |
| Anaerobic co-digestion of water hyacinth (E. crassipes) with ruminal slaughterhouse waste for biogas production EA Omondi, P Gikuma-Njuru, PK Ndiba Universitas Diponegoro, 2019 | 21 | 2019 |
| Metal and metalloid concentrations in domestic and imported glass beads used for highway marking NK Sandhu, L Axe, PK Ndiba, K Jahan Environmental Engineering Science 30 (7), 387-392, 2013 | 16 | 2013 |
| Complexity of E-waste and its management challenges in developing countries–a review EA Omondi, PK Ndiba, GC Koech International Journal of Environmental Sciences and Natural Resources 31 (2 …, 2022 | 13 | 2022 |
| Risk assessment of metal leaching into groundwater from phosphate and thermal treated sediments PK Ndiba, L Axe Journal of Environmental Engineering 136 (4), 427-434, 2010 | 13 | 2010 |
| Phytoremediation of polychlorobiphenyls (PCB’s) in landfill e-waste leachate with water hyacinth (E. crassipes) EA Omondi, PK Ndiba, PG Njuru Int. J. Sci. Technol. Res 4, 147-156, 2015 | 12 | 2015 |
| Sequential extraction of phosphate-and thermal-treated New York/New Jersey Harbor dredged sediments PK Ndiba, L Axe Environmental engineering science 26 (12), 1755-1764, 2009 | 10 | 2009 |
| Performance of crushed coconut shell dual media filter PMA Odira, PK Ndiba Journal of Civil Engineering Research and Practice 4 (2), 85-92, 2007 | 8 | 2007 |
| Removal of lead (II) from aqueous solution using natural materials: a kinetic and equilibrium study B Kakoi, JW Kaluli, P Ndiba, G Thiong’o JOURNAL OF SUSTAINABLE RESEARCH IN ENGINEERING 3 (3), 53-62, 2016 | 6 | 2016 |
| Modeling anaerobic co-digestion of water hyacinth with ruminal slaughterhouse waste for first order, modified gompertz and logistic kinetic models. EA Omondi, PK Ndiba, GK Chepkoech, AA Kegode International Journal of Renewable Energy Development 12 (3), 2023 | 4 | 2023 |
| Seasonal variation of surface water quality in the Nairobi river system B Kakoi, JW Kaluli, P Ndiba, G Thiong'o Scientific Conference Proceedings, 2016 | 4 | 2016 |
| Quality Assessment of Rain and Storm Water Runoff for Nairobi City Industrial and Sub-Urban Areas EM Lusigi University of Nairobi, 2017 | 3 | 2017 |
| Heavy Metal Contamination in Highway Marking Glass Beads K Jahan, LB Axe, NK Sandhu, PK Ndiba, KV Ramanujachary, ... | 3 | 2011 |
| Defluoridation of Groundwater by Activated Carbon Derived from Water Hyacinth (Pontederia crassipes) by Phosphoric Acid Activation EM Muchunku, PK Ndiba, EA Omondi American Journal of Water Science and Engineering 9 (4), 97-107, 2023 | 2 | 2023 |