Semiconductor photocatalysis: an environmentally acceptable alternative production technique and effluent treatment process

New environmentally acceptable production methods are required to help reduce the environmental impact of many industrial processes. One potential route is the application of photocatalysis using semiconductors. This technique has enabled new environmentally acceptable synthetic routes for organic synthesis which do not require the use of toxic metals as redox reagents. These photocatalysts also have more favourable redox potentials than many traditional reagents. Semiconductor photocatalysis can also be applied to the treatment of polluted effluent or for the destruction of undesirable by-products of reactions. In addition to the clean nature of the process the power requirements of the technique can be relatively low, with some reactions requiring only sunlight. 

Alternative Care and Children’s Rights in Northern Ireland

This report covers the rights of the most vulnerable children in Northern Ireland who cannot be cared for within their own family. The purpose of the report is to review the current provision and circumstances facing such children and young people and how international human rights standards can offer protection and support.

Criminal Justice in Transition: The Northern Ireland Context

This book represents a critical examination of key aspects of crime and criminal justice in Northern Ireland which will have resonance elsewhere. It considers the core aspects of criminal justice policymaking in Northern Ireland which are central to the process of post-conflict transition, including reform of policing, judicial decision-making and correctional services such as probation and prisons. It examines contemporary trends in criminal justice in Northern Ireland as related to various dimensions of crime relating to female offenders, young offenders, sexual and violent offenders, race and criminal justice, community safety and restorative justice. The book also considers the extent to which crime and criminal justice issues in Northern Ireland are being affected by the broader processes of ‘policy transfer’, globalisation and transnationalism and the extent to which criminal justice in Northern Ireland is divergent from the other jurisdictions in the United Kingdom. Written by leading international authorities in the field, the book offers a snapshot of the cutting edge of critical thinking in criminal justice practice and transitional justice contexts.

Phytoremediation assessment of Gomphrena globosa and Zinnia elegans grown in arsenic-contaminated hydroponic conditions as a safe and feasible alternative to be applied in arsenic-contaminated soils of the Bengal Delta

Several agricultural fields show high contents of arsenic because of irrigation with arsenic- contaminated groundwater. Vegetables accumulate arse- nic in their edible parts when grown in contaminated soils. Polluted vegetables are one of the main sources of arsenic in the food chain, especially for people living in rural arsenic endemic villages of India and Bangladesh. The aim of this study was to assess the feasibility of floriculture in the crop rotation system of arsenic en- demic areas of the Bengal Delta. The effects of different arsenic concentrations (0, 0.5, 1.0, and 2.0 mg As L−1) and types of flowering plant (Gomphrena globosa and Zinnia elegans) on plant growth and arsenic accumula- tion were studied under hydroponic conditions. Total arsenic was quantified using atomic absorption spec- trometer with hydride generation (HG-AAS). Arsenic was mainly accumulated in the roots (72 %), followed by leaves (12 %), stems (10 %), and flowers (<1 %). The flowering plants studied did not show as high phytoremediation capacities as other wild species, suchas ferns. However, they behaved as arsenic tolerant plants and grew and bloomed well, without showing any phytotoxic signs. This study proves that floriculture could be included within the crop rotation system in arsenic-contaminated agricultural soils, in order to im- prove food safety and also food security by increasing farmer’s revenue.