In this doctoral thesis, various aspects of string model building and phenomenology are investigated within the framework of Type IIA string theory on the T 6/(Z2 × Z6 × ΩR) orbifold with discrete torsion. The aim is the reproduction of supersymmetric versions of well-known particle physics models using intersecting rigid D6-branes wrapped on fractional three-cycles. The models analyzed include the minimal supersymmetric Standard Model as well as supersymmetric Pati-Salam models, left-right symmetric models and SU(5) models. Systematic computer scans test numerous combinations of intersecting D6-branes in order to detect those that give rise to the correct chiral particle content of the considered models. For each type of the aforementioned models, concrete examples will be found which satisfy the constraints on the particle spectrum and fulfill all consistency conditions. Finally, the thesis will focus on phenomenological aspects of the particle physics models found, including the detection of massless U(1) combinations, discrete Zn-symmetries and cubic couplings such as the Yukawa couplings.