Pusat Pengajian Kejuruteraan Awam - Tesis
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- PublicationAdsorption studies of heavy metals on activated carbon prepared from agricultural waste(2018-03)Muhamad Faizal bin Pakir Mohamed LatiffCommercially available activated carbon (AC) is still considered expensive due to the use of non-renewable and relatively expensive starting material such as bituminous coal. Therefore, this study investigates the potential use of agricultural waste such as rubber seed coat (RSC) and corncob (CC) that available in Malaysia, as the precursor for the preparation of AC which can be applied for the removal of two types of heavy metal, which are Cu (II) and Zn (II) from aqueous solution. Physiochemical activation consisting of potassium hydroxide (KOH) impregnation plus carbon dioxide (CO2) gasification was used to prepare the ACs. The optimum preparation conditions of RSCAC-CU were found at activation temperature of 793 °C, activation time of 1h and KOH impregnation ratio (IR) of 2.46. As for RSCAC-ZN, the optimum preparation conditions were at activation temperature of 797 °C, activation time of 1h and IR of 2.61. Meanwhile, the optimum preparation conditions of CCAC-CU were found at activation temperature of 762 °C, activation time of 2.7h and IR of 3.25. For CCAC-ZN, the optimum reparation conditions were at activation temperature of 768 °C, activation time of 3h and IR of 3.5. All the activated carbons prepared were high BET surface area (>500 m2/g) and pore volume (>0.41 m3/g). RSCAC and CCAC demonstrated homogeneous and heterogeneous type pore structures, respectively. The effects of adsorbate initial concentration (10-100 mg/L), contact time, solution temperature (30-60 °C), solution pH (2-6), isotherms and kinetics of the adsorption systems were evaluated through batch adsorption test. The Cu (II) and Zn (II) adsorption uptakes increased with increasing initial concentration and optimum contact time. Adsorptions of Cu (II) and Zn (II) on all ACs were best fitted by the Freundlich isotherm model. Adsorption kinetics of Cu (II) and Zn (II) followed pseudo-second-order on all the ACs. Fixed bed study showed that the exhaustion period for Zn (II) was greater than Cu (II) and the increase in bed heights resulted in higher exhaustion period.
- PublicationPenyingkiran Besi Dan Nutrien Daripada Larut Resap Menggunakan Karbon Teraktif Dan Amfoterik Surfaktan-Diubahsuai Zeolite(2014-06)Abdullah, RohanaLarut resap tapak pelupusan terkenal sebagai air sisa yang kompleks di mana komposisi dan kepekatan bahan pencemar kebanyakannya dipengaruhi oleh jenis sisa dideposit dan usia tapak pelupusan. Rawatan larut resap menggunakan karbon teraktif berbutir (GAC) dalam menyingkirkan besi dan amfoterik surfaktandiubahsuai zeolit (SMZ) bagi pengambilan NH3-N dan nutrien lain (N, P, & K) telah dikaji. Kecekapan penjerapan telah ditentukan oleh satu siri eksperimen penjerapan kumpulan menggunakan peralatan ujian balang. GAC yang di pra-rawat dengan 1.5N NaOH digunakan kerana ia menunjukkan prestasi penjerapan besi yang lebih baik. Selain itu, zeolite yang menjalani pengubahsuaian permukaan dengan 0.03M amfoterik Miranol C2M telah dipilih untuk kajian lanjut. Keputusan kajian kumpulan menunjukkan GAC dapat menyingkirkan 90.29% besi berbanding 50.25% menggunakan KOH sebagai pemendak kimia. Sementara itu, amfoterik SMZ telah dioptimumkan menggunakan RSM dan berkesan menjerap warna, NH3-N dan nutrien lain (N, P, & K) berbanding dengan zeolit asli. Kebolehgunaan amfoterik SMZ sebagai produk baja lambat bebas diperhatikan.
- PublicationLand Use Land Cover Change Analysis Using Multi Spatial Data For Sungai Raya Catchment(2014-05)Sopian, Mohd Idzadin MohdWater resources are one of the critical importance’s in human life. The rapid development, population growth, migration and urbanization cause water crisis, in quantity and quality. Sungai Raya catchment is catchment in Perak state. Catchment area is located at the edge of the Ipoh city and part of it is included in the Ipoh Plan 2020. In controlling the suburbanisation process while securing water resource, officials of legislators, planners, state and local governmental required Land Use Land Cover (LULC) information in determining the suitable policy. The temporal Land Use Land Cover (LULC) change analysis for Sungai Raya watershed evaluation is conducted from 1990 to 2010, by integrating Digital Elevation Model (DEM), satellite dataset and Geographic Information System (GIS). Study conducted utilizing post-classification comparison and GIS approach, with network detection, pixel base classification and object base classification technique.
- PublicationKajian Penghasilan Dan Komposisi Enap Cemar Dari Loji-Loji Olahan Air Di Negeri Perak Dan Kesesuaian Sebagai Bahan Binaan(2003-05)Shuib, Nor LilaThe objectives of the study are to estimate the quantity of sludge produced, to identify the characteristics of raw water and sludge, and to identify the composition of elements in the sludge with the possibility of using it as a useful material in the future. In order to meet these objectives, several tests were conducted on raw water samples and sludges. These include test on pH, turbidity, total suspended solids, moisture content, specific gravity and composition of elements in the sludge.
- PublicationKajian Kestabilan Cerun Menggunakan Kaedah Berkebarangkalian Di Lombong Tembaga Mamut, Ranau, Sabah(2003-02)Mohd Yusof, Mior TermiziSuatu kajian kestabilan cerun telah dijalankan di cerun-cerun sebuah lombong dedah iaitu Lombong Tembaga Mamut yang terletak di Ranau, Sabah. Geologi dan permineralan dalam batuan telah dikaitkan dengan kestabilan cerun lombong. Mod kegagalan telah dikenalpasti serta kajian kestabilan yang lalu telah dilihat semula. Dua jenis kegagalan iaitu yang dikawaloleh struktur geologi dan yang tidak dikawaloleh struktur geologi telah dikenalpasti. Beberapa analisa kestabilan cerun berketentuan telah dirujuk semula tetapi kaedah berkebarangkalian digunakan untuk menganalisa cerun-cerun di Lombong Tembaga Mamut.