Two macabre discoveries in a single morning present an intriguing challenge for Detective Inspector Tom Harper Leeds, England. July, 1893. D.I. Tom Harper is witnessing the demonstration of a devastating new naval weapon, the torpedo, at Roundhay Park. The explosion brings up a body in the lake, a rope lashed tightly around its waist. At the same time, dredging operations in the River Aire are disrupted when a woman’s severed leg floats to the water’s surface, still clad in its stocking and boot. Could the two macabre discoveries be connected? Harper’s investigations will lead him right to the heart of the criminal underworld that underpins the city – and into the path of a merciless killer.

Do you love plants? Do you love crafting? Would you like to dye your own fabric, yarn or clothing? Learn the relaxing art of botanical dyeing with natural dyer, Rebecca Desnos. Connect with nature and open your eyes to the colour potential of plants. Discover how to: produce a wide palette of colours, including pink from avocados, yellow from pomegranates and coral from eucalyptus leaves; extract dye from just about any plant from the kitchen, garden or wild; use the ancient method of soya milk mordanting to achieve rich and long-lasting colour on plant fibres, such as cotton and linen; produce reliable colours that withstand washing and exposure to light.

Alluvial Aquifer Processes

The acclaimed travel writer's youthful journey - as an 18-year-old - across 1930s Europe by foot began in A Time of Gifts, which covered the author's exacting journey from the Lowlands as far as Hungary. Picking up from the very spot on a bridge across the Danube where his readers last saw him, we travel on with him across the great Hungarian Plain on horseback, and over the Romanian border to Transylvania. The trip was an exploration of a continent which was already showing signs of the holocaust which was to come. Although frequently praised for his lyrical writing, Fermor's account also provides a coherent understanding of the dramatic events then unfolding in Middle Europe. But the delight remains in travelling with him in his picaresque journey past remote castles, mountain villages, monasteries and towering ranges.

This Best Practice Guide on the Control of Iron and Manganese in Water Supply is one of a series produced by the International Water Association’s Specialist Group on Metals and Related Substances in Drinking Water. Iron and manganese are often found in soft upland water sources associated with natural organic matter and are also commonly found in the groundwater abstracted from confined and unconfined aquifers. The presence of iron and manganese in water is one of the most frequent reasons for customers’ complaint due to aesthetic issues (yellow, brown and black or stains on laundry and plumbing fixtures). These two metals can be removed fairly readily by physico-chemical treatment. The municipal treatment systems deployed derive benefit from their larger scale, particularly in relation to control, but the processes used are less suitable for the numerous small supplies that are the most common water supplies throughout Europe, especially in rural areas. One important source of iron in drinking water is from old corroded cast-iron water mains, historically the material used most commonly in supply networks. Replacement and refurbishment is very expensive and the major challenge is how best to prioritize available expenditure. The purpose for this Best Practice Guide on the Control of Iron and Manganese in Water Supply is to give readers the broad view of a problem based on state-of-the-art compilation of the range of scientific, engineering, regulatory and operational issues concerned with the control of iron and manganese in drinking water. The Guide is of interest to water utility practitioners, health agencies and policy makers, as well as students on civil engineering and environmental engineering courses. Authors: Dr Adam Postawa, AGH University of Science and Technology, Faculty of Geology, Geophysics and Environment Protection, Krakow, Poland and Dr Colin R Hayes, University of Swansea, UK, Chair of IWA Specialist Group on Metals and Related Substances in Drinking Water.

Nanotechnology has a great potential for providing efficient, cost-effective, and environmentally acceptable solutions to face the increasing requirements on quality and quantity of fresh water for industrial, agricultural, or human use. Iron nanomaterials, either zerovalent iron (nZVI) or iron oxides (nFeOx), present key physicochemical properties that make them particularly attractive as contaminant removal agents for water and soil cleaning. The large surface area of these nanoparticles imparts high sorption capacity to them, along with the ability to be functionalized for the enhancement of their affinity and selectivity. However, one of the most important properties is the outstanding capacity to act as redox-active materials, transforming the pollutants to less noxious chemical species by either oxidation or reduction, such as reduction of Cr(VI) to Cr(III) and dehalogenation of hydrocarbons. This book focuses on the methods of preparation of iron nanomaterials that can carry out contaminant removal processes and the use of these nanoparticles for cleaning waters and soils. It carefully explains the different aspects of the synthesis and characterization of iron nanoparticles and methods to evaluate their ability to remove contaminants, along with practical deployment. It overviews the advantages and disadvantages of using iron-based nanomaterials and presents a vision for the future of this nanotechnology. While this is an easy-to-understand book for beginners, it provides the latest updates to experts of this field. It also opens a multidisciplinary scope for engineers, scientists, and undergraduate and postgraduate students. Although there are a number of books published on the subject of nanomaterials, not too many of them are especially devoted to iron materials, which are rather of low cost, are nontoxic, and can be prepared easily and envisaged to be used in a large variety of applications. The literature has scarce reviews on preparation of iron nanoparticles from natural sources and lacks emphasis on the different processes, such as adsorption, redox pathways, and ionic exchange, taking place in the removal of different pollutants. Reports and mechanisms on soil treatment are not commonly found in the literature. This book opens a multidisciplinary scope for engineers and scientists and also for undergraduate or postgraduate students.