http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Zahra Shokri (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
Adsorption of Cu(II) to mGO@Urea and its application for the catalytic reduction of 4-NP
Seyed Ali Hosseini,Zahra Shokri,Shiva Karami 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.75 No.-
mGO@Urea was successfully fabricated and examined for Cu2+ adsorption from aqueous solutions. mGO@Urea was characterized by XRD, FT-IR, SEM, EDX and VSM. Furthermore, the effects of some factorssuch as pH, adsorbent type, Cu2+ concentration, adsorbent amount and time on adsorption capacity werestudied. The isotherm analysis indicates that the sorption data were expressed by Langmuir isothermmodel better than Freundlich and the adsorption kinetics was followed from the pseudo-second-orderequation. After the adsorption process, the adsorbent could be effortlessly magnetically separated. Also,the catalytic performance of the mGO@Urea@Cu was evaluated for the reduction of p-nitrophenol withNaBH4.
-
Mohammad Ali Rezvani,Zahra Shokri Aghbolagh,Hassan Hosseini Monfared,Sahar Khandan 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.52 No.-
In this study, the removal of hazardous sulfur compounds from gasoline was provided based on catalyticoxidation demercaptanization technique. The cesium salt of mono Mn(II)-substituted Keggin-typepolyoxometalate Cs5PMnW11O39 (PMnW11) was successfully synthesized and immobilized on modifiedgraphene oxide (mGO) as a new nanocatalyst (PMnW11@mGO) for demercaptanization process. Thesynthesized materials were characterized by powder X-ray diffraction (XRD), scanning electronmicroscopy (SEM), ultraviolet–visible (UV–vis), Fourier transform infrared spectroscopy (FT-IR), andcyclic voltammetry (CV) analysis. Characterization of the prepared nanocomposite was confirmed thatthe structures of the PMnW11 and mGO were retained after immobilization. The sulfur-containingmolecules in real gasoline and simulated fuel were oxidized and extracted efficiently under mild reactioncondition. After treatment, the mercaptans and total sulfur content of real gasoline were lowered with98.8% and 98% yield, respectively. The PMnW11@mGO hybrid nanocatalyst was separated and reusedconveniently at the end of the reaction forfive times. The excellent performance of this new catalyticoxidation system can be a promising rout to achieve ultra-clean gasoline.
-
Amin Rostami,Amira Abdelrasoul,Zahra Shokri,Zeinab Shirvandi 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.4
Phenolic compounds are present in different concentrations in the effluent from numerous industrial andagricultural activities. These compounds are harmful to living organisms due to their high toxicity, hence indicating aserious environmental concern. Although conventional methods such as chemical, physical, and physicochemical procedureshave been widely used for treating phenol-contaminated wastewaters, they are not useful owing to some shortcomings. Compared to conventional procedures, much attention has been recently devoted to enzymatic methodsbecause of high catalytic efficiency, mild operating conditions and environmentally friendly feature. Among variousenzymes, laccases have demonstrated a superior potential for removing phenolic contaminants. Thus, this review summarizesthe up-to-date literature on the use of free and immobilized laccases from different microbial source in thedegradation and remediation of phenolic pollutants in batch processes and continuous reactors. In general, examplesthrough the review approve that free laccases as well as immobilized laccases onto inorganic, organic (natural or synthetic)and hybrid supports show excellent performance in the remediation of phenolic compounds from wastewater. In contrast to immobilized laccases, free laccases suffer from high prices, low operative stability, and inability to recoverand reuse in their native forms. Moreover, the possible mechanisms associated with oxidation of phenolic compoundsby the laccase-catalyzed systems are assessed.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
