인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Extensive industrial activities discharge huge amounts of different pollutants into water bodies. Among these pollutants, heavy metals stand as the most poisonous species due to their resistance to biodegradation and their short- and long-term exposure effects. More specific, Cr(VI) is one of the top-five toxic elements that pose potent toxicity to the entire environmental system. In this study, six modified chitosan hydrogel composites (Categorized in two groups and comprised of chitosan or carboxymethyl chitosan crosslinked with acrylamide and incorporating aluminum oxide as an inorganic core) were prepared under the influence of gamma irradiation at an optimized dose (30 kGy) as a facile, environmentally friendly technique. These hydrogels were employed for the removal of Cr(VI) from aqueous solution considering various variables that influencing removal performance, taking structural variation into consideration. The removal process was followed by the AFM to compare between the chromium-free and chromium-loaded surfaces. According to the experimental findings, the following circumstances were ideal for maximizing dye uptake by the optimized samples: pH 2, 120-min contact duration, 0.1 g of sorbent, and a metal concentration of 50 ppm. The maximum metal uptake was achieved by the prepared green sorbents was found competitive (ranging from 48.9 to 51.5 mg/g). Moreover, all the investigated sorbents showed strong removal efficiency and adsorption capability after four cycles of sorption/desorption. However, it was found that the adsorption capacities of the second group's elements was higher than that of the first group. Additionally, the data demonstrated that the adsorption process conformed the pseudo-first order kinetic isotherm and best fit the Freundlich model imposing multilayer adsorption of Cr(VI) onto the sorbent matrix via several mechanisms which is consistent with variable functionalities in the hydrogel matrix.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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