Chitosan/Ag-hydroxyapatite nanocomposite beads as a potential adsorbent for the efficient removal of toxic aquatic pollutants

Abstract

The transition to adult life of looked-after young people depends on a combination and interaction of multiple contributing factors such as past experiences, challenges faced by the young people in their current life situation, the support they have received and their personal strengths. Several reviews and studies have reported of poor outcomes for care leavers and indicate that this is a worldwide phenomenon. A lower level of support in the transition process increases the risk for social exclusion, homelessness, unemployment, low education, financial difficulties and behavioral problems. The aim of this review was to gather, assess and synthesize the current empirical evidence of transition to adult life from the perspective of young people leaving foster care. A systematic review was conducted in six scientific databases to identify relevant qualitative studies published from 2010 to 2017, and 21 studies met the inclusion criteria. The quality of the included studies was evaluated using the checklist for qualitative studies of the Critical Appraisal Skills Programme (2017). Data were analyzed using a narrative method. Care leavers had two views of their transition to adult life. The views differed clearly based on the care leavers' experiences of their capabilities, emotions and identity. The care leaving process was described as an unprepared and unfocused process which provided the care leavers no opportunities for participating in the decision-making concerning their future. The young people had acquired few survival skills for independent living in aftercare. Care leavers often lacked the support of family members, former care providers and institutional bodies. The challenges young people often faced during the transition to independent living were concerned with academic qualifications, housing problems, employment and financial instability, building relationships and assimilating to cultural norms, and access to health care. The results of the review can be utilized in the development of services and in designing future studies.

Adsorption Process and Properties Analyses of a Pure Magadiite and a Modified Magadiite on Rhodamine-B from an Aqueous Solution

“…The adsorption capacity was fitted by the pseudo first order dynamic equation and the pseudo second order dynamic equation [35][36][37], as shown in Equations (5) and (6). Equation 5was the pseudo first order dynamic equation expression.…”

“…There are many kinds of methods used to treat wastewater containing Rh-B, such as electrochemical oxidation [1], catalytic difficult to degrade because of stable chemical structure, as can be seen from Figure 1. There are many kinds of methods used to treat wastewater containing Rh-B, such as electrochemical oxidation [1], catalytic degradation [2], photocatalytic degradation [3], photoelectrocatalytic degradation [4], heterogeneous photo-Fenton degradation [5], and the adsorption method [6] which is the most common way because it is simple to operate, with wide range of options. Magadiite (MAG), which was discovered by Eugster in Kenya's saline lake [7], is a natural layered silicate mineral; its plates present a rose petal shape; it presents as a white powder under normal circumstances.…”

Selective and Highly Efficient Adsorption of a Mixture of Anionic and Cationic Dyes as Synthetic Wastewater Absorbents on Layered Double Hydroxide: Experimental and Computational Studies

“…The Zn 2p spectra of XPS displayed two peaks asymmetric assigned to Zn 2p 3/2 and Zn 2p 1/2 core levels at 1021.8 and 1044.7 eV respectively, which related to that Zn charge were in 2+ oxidation state in LDH[14]. The O 1s peak as showed in Fig4of pure material (LDH) was at 531.80 eV which due to the presence of the -OH group of Zn-Fe LDH[31]. Moreover, the signal of Fe 2p of Fe 3+ peaks intricate by Fe 2p3/2 (711.7 eV) and Fe 2p1/2…”

Investigation the Effects of Green-Synthesized Copper Nanoparticles on the Performance of Activated Carbon-Chitosan-Alginate for the Removal of Cr(VI) from Aqueous Solution

“…Nowadays, using biomaterials as adsorbents is desirable due to their low cost and simple convenience [ 12 ]. For example, biopolymers are extensively applied in water-treatment owing to their wide variety of uses, biodegradability and ecological nature for instance [ 13 ].…”