کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5747853 | 1618917 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chemical and toxicological assessment of arsenic sorption onto Fe-sericite composite powder and beads
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Batch sorption and leaching of arsenic (1-30 mg Lâ1) on Fe-sericite composite powder and beads were investigated in this study. Fe-sericite composite powder was made from natural sericite modified with iron, and alginate was used to transform the powder into beads. The maximum sorption capacities of the Fe-sericite composite powder (15.04 and 13.21 mg gâ1 for As(III) and As(V), respectively) were higher than those of the corresponding beads (9.02 and 7.11 mg gâ1 for As(III) and As(V), respectively) owing to the higher specific surface area of the powder. In addition, the leaching amounts of As(III) from Fe-sericite composite beads (⤠15.03%) were higher than those of the corresponding powder (⤠5.71%). However, acute toxicity of As(III)-sorbed Fe-sericite composite beads toward Daphnia magna was not significantly different from that of the corresponding powder (p > 0.05). Considering higher uptake of the powder particles by the daphnids, Fe-sericite composite beads seem to be a more appropriate and safer sorbent for arsenic removal in practical application. Based on Fe content, Fe-sericite composite beads had similar or higher maximum sorption capacities (71.19 and 56.11 mg gâ1 Fe for As(III) and As(V), respectively) than those of previously reported sorbents.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecotoxicology and Environmental Safety - Volume 147, January 2018, Pages 80-85
Journal: Ecotoxicology and Environmental Safety - Volume 147, January 2018, Pages 80-85
نویسندگان
Jiwon Kim, Cheongho Lee, Seung Mok Lee, Lalhmunsiama Lalhmunsiama, Jinho Jung,