"Providing an introduction, scientific background, case studies and future perspectives of technologies for soils, soil water and groundwater at contaminated sites. Case studies present especially arsenate and arsenite, but also organic arsenic compounds. The work covers geochemical, microbiological and plant ecological solutions for arsenic remediation. Part I: Introduction, Background and Remediation Technologies; Part II: Case Studies: Soils; Geogenic, Mining-Related and Anthropogenic Contaminated Sites; Technical, Ecological and Economical Sustainability of In-Situ Remediation; Modeling."-- 1. In-situ technologies for groundwater treatment: the case of arsenic / Marta I. Litter, Josâe Luis Cortina, Antâonio M.A. Fiâuza, Aurora Futuro & Christos Tsakiroglou -- 2. Numerical modeling of arsenic mobility / Ilka Wallis, Henning Prommer & Dimitri Vlassopoulos -- 3. Phytostabilization of arsenic / Claes Bergqvist & Maria Greger -- 4. Recent advances in phytoremediation of arsenic-contaminated soils / XinWang & Lena Qiying Ma -- 5. Fundamentals of electrokinetics / Soon-Oh Kim, Keun-Young Lee & Kyoung-Woong Kim -- 6. Microbial in-situ mitigation of arsenic contamination in plants and soils / Nandita Singh, Pankaj Kumar Srivastava, Rudra Deo Tripathi, Shubhi Srivastava & Aradhana Vaish -- 7. In-situ immobilization of arsenic in the subsurface on an anthropogenic contaminated site / Timo Krèuger, Hartmut M. Hollèander, Jens Stummeyer, Bodo Harazim, Peter-W. Boochs & Max Billib.