MUT Institutional Repository (IR)

MUT IR serves as the home for the intellectual output of MUT academic communities, and will ultimately include digital dissertations, faculty publications, digital special collections, open access publications, open educational resources and much more.

Browse Communities

Quick access to the main repository content types

10 communities

1. Journal Articles 1411 2. Books and Book Chapters 96 3. Theses & Dissertations 150 4. Conference/ Workshops /Seminar/ Proceedings 88 5. Institutional Memory 42 6. Speeches and Lectures 39 7. Policies / Reports / Statutes 3 8. Projects & Business plan 0 9. Government publications 0 Patents 3

Recent Submissions

Access status: Open Access ,
ASSESSMENT OF ENDPOINT OF DECALCIFICATION
(Kenya Industrial Property Institute, 2025-04-02) CHEPKEMOI, MANYU GRACE
CERTIFICATE OF REGISTRATION OF UTILITY MODEL It is hereby certified that a utility model with utility model number 637 has been registered in the name MURANG'A UNIVERSITY OF TECHNOLOGY of P. O. BOX 75-10200 MURANG'A, Kenya and MANYU GRACE CHEPKEMOI of P. O. BOX 75-10200 MURANG'A, Kenya in respect of an invention disclosed in an application number/U/2025/2956 having a date of filing of 02/04/2025 and being an invention titled ASSESSMENT OF ENDPOINT OF DECALCIFICATION. Dated at Nairobi this 10th day of June, 2026.
Access status: Open Access ,
ADSORBENT ( SILICA MOLYBDATE) FOR REMOVAL OF PHOSPHATES FROM WATER.
(Kenya Industrial Property Institute, 2025-06-23) Njoroge, Peter W.
CERTIFICATE OF REGISTRATION OF UTILITY MODEL It is hereby certified that a utility model with utility model number654 has been registered in the name of MURANG'A UNIVERSITY OF TECHNOLOGY P. O. BOX 75-10200 MURANG'A, Kenya and NJOROGE PETER WAITHAKA of P. O.BOX 75-10200 MURANG'A, Kenya in respect of an invention disclosed in an application number/U/2025/3065 having a date of filing of 23/06/2025 and priority date of being an invention titled ADSORBENT (SILICA MOLYBDATE) FOR REMOVAL OF PHOSPHATES FROM WATER. Dated at Nairobi this 18th day of August, 2026.)
Access status: Open Access ,
CONCENTRATION OF LATERITES USING BIOMAS
(Kenya Industrial Property Institute, 2013-06-12) Muriithi, Naftali; Njoroge, Peter W.; Wachira, Jackosn; Wanjau, Ruth
A method of concentrating iron in laterites to make the .rcn extraction process economical is disclosed. Concentration using biomass yields higher levels of iron by using appropriate ratio of biomass: laterites. The concentration of iron in the laterites was done by heating a laterite /charcoa! mixture in the temperature range 500-7000C in a ceramic container, a slow current of air (0.5-0.7em3/sec) was passed thus generating carbon monoxide in-situ. The process involves cooling and picking iron containing mineral. The optimum ratio of biomass: laterite was found to be 1 :20 by mass. The iron in the raw laterites is predominantly minerals goethite, FeO.OH and haematite, Fe203, as shown by presence of peaks at diffraction angles of 28 = 21.51 ° and 28 = 54.11 “respectively. After magnet-separation iron wes present predomisianily as the mineral, magnetite Fe304, with diffraction peak at 28 = 36°. The percentage of iron in the magnet-separated product is increased to 55-62%.
Access status: Open Access ,
RESIDUAL ALUMINIUM IONS IN WATER TREATED WITH 'ROCK ALUM' COAGULANTS
(International Journal of Research and Analytical Reviews (IJRAR), 2026-06) Murage, Daniel; Njoroge, Peter W.; Opiyo, Sylvia A.; Kiprotich, Sharon
Safe and clean water is one of the essential natural resources necessary for human existence. Demand for clean and safe water has dramatically increased with the increase in human population and industrial developments. In most developing countries, small-scale water consumers use coagulants obtained from commercial shops to treat drinking water obtained from rivers, lakes and bore holes to remove turbidity and other suspended particles. These coagulants are preferred due to their convenience in use, low cost and is widely available in local market. Examples of these coagulants include 'Rock Alum'. Previous studies hypothesized that use of aluminium-based coagulants leaves residual aluminium in water making it unsafe for human consumption. Effects of aluminium exposure include neurological disorders such as Alzheimer's disease, reduced intellectual capability, renal failure, and bone defects. This study focused on analysis of treated de-ionized, river and borehole water samples treated with variable masses of the coagulant ‘rock alum’ ranging from a maximum of 0.125 g to a minimum of 0.0125 g in 500 cm3 of water. The concentration of residual aluminium ions in treated water samples was determined using an Atomic Absorption Spectrometer. River water and borehole water samples were obtained from 3 different regions within central Kenya This study found that de-ionized water treated with 0.125 g and 0.0125g of coagulant in 500 cm3 of water reported concentration of residual aluminium at an average of 7.41 and 1.9 ppm respectively. Analysis of river and borehole water samples treated with 0.125 g of coagulant in 500 cm3 gave 4.23 and 3.47 ppm respectively. These concentrations are higher than 0.1 ppm which is the permissible limits the World HealthOrganisation (WHO) set for safe drinking water. These elevated levels are detrimental to consumers' health. These results provide important information to government bodies in charge of water provision and public health on the risks associated with water treated with commercial aluminium-based coagulants. This study recommends improvement in water treatment conditions to reduce residual aluminium ions.
Access status: Open Access ,
Green Synthesis and Characterization of TiO₂, ZnO and TiO₂/ZnO-Activated Maize Cob Composite Using Tithonia Diversifolia Leaf Extract as Capping Agent
(IOSR Journal of Applied Chemistry (IOSR-JAC), 2026-07-24) Margaret Ng’endo Njambi; Opiyo, Sylvia A.; Njoroge, Peter W.
Green synthesis has emerged as an environmentally friendly and sustainable approach for producing metal oxide nanoparticles by eliminating the use of hazardous reducing agents and minimizing environmental pollution. This study focused on the green synthesis and characterization of titanium dioxide (TiO₂) and zinc oxide (ZnO) nanoparticles using Tithonia diversifolia leaf extract as a natural reducing, capping, and stabilizing agent, followed by the preparation and characterization of a TiO₂/ZnO-activated maize cob composite. The study aimed to develop an eco-friendly nanocomposite by integrating green nanotechnology with agricultural residuevalorization. TiO₂ and ZnO nanoparticles were synthesized through a plant-mediated green synthesis route and subsequently immobilized onto chemically activated maize cob using the impregnation method to enhance structural stability and surface functionality. Fourier Transform Infrared Spectroscopy (FTIR) and X-ray Diffraction (XRD) were employed to characterize the synthesized nanoparticles and the resulting composite. Visual observation confirmed successful nanoparticle formation through the appearance of white precipitates during synthesis. FTIR analysis identified characteristic O-H stretching bands at approximately 3750 cm⁻¹ for TiO₂ and 3800 cm⁻¹ for ZnO, together with C=O, C-O, Ti-O, and Zn-O functional groups, confirming phytochemical-mediated stabilization and successful nanoparticle incorporation into the activated maize cob matrix. XRD analysis confirmed the formation of highly crystalline phase-pure rutile TiO₂ and hexagonal wurtzite ZnO nanoparticles with average crystallite sizes of 1.89 nm and 15.33 nm, respectively. The TiO₂/ZnO-activated maize cob composite retained the characteristic crystalline phases of both metal oxides while exhibiting enhanced surface functionality and structural stability. The findings demonstrate that Tithonia diversifolia is an effective biological resource for the green synthesis of stable TiO₂ and ZnO nanoparticles and that activated maize cob provides an efficient, sustainable support matrix for developing environmentally friendly bio-nanocomposites