Journal ArticleDOI
Cr(VI) adsorption by a green adsorbent walnut shell: Adsorption studies, regeneration studies, scale-up design and economic feasibility
TLDR
In this paper, a scale-up design for Cr(VI) removal using walnut shell as an adsorbent and its economic feasibility are done to find out its applicability in real life.About:
This article is published in Process Safety and Environmental Protection.The article was published on 2018-05-01. It has received 90 citations till now. The article focuses on the topics: Adsorption & Langmuir adsorption model.read more
Citations
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Journal ArticleDOI
Adsorption of congo red and methylene blue dyes on an ashitaba waste and a walnut shell-based activated carbon from aqueous solutions: Experiments, characterization and physical interpretations
Zichao Li,Hassan Hanafy,Hassan Hanafy,Lei Zhang,Lotfi Sellaoui,Matias Schadeck Netto,Marcos L.S. Oliveira,Moaaz K. Seliem,Guilherme Luiz Dotto,Adrian Bonilla-Petriciolet,Qun Li +10 more
TL;DR: In this article, the adsorption of congo red and methylene blue dyes in aqueous solution were characterized via XRD, FTIR and SEM techniques and the dye isotherms at three temperatures were quantified.
Journal ArticleDOI
Effects of operating parameters and coexisting ions on the efficiency of heavy metal ions removal by nano-fibrous metal-organic framework membrane filtration process.
TL;DR: Results from the filtration experiments indicate a substantial variation in the feed volume that the membrane can treat before the permeate lead concentration reaches the allowable limit of 10 ppb, depending on the process parameter.
Journal ArticleDOI
Walnut Fruit Processing Equipment: Academic Insights and Perspectives
Liu Mingzheng,Li Changhe,Chengmao Cao,Liqiang Wang,Li Xinping,Che Ji,Yang Huimin,Zhang Xiaowei,Zhao Huayang,He Guangzan,Liu Xiangdong +10 more
TL;DR: In this paper, a detailed analysis of the current situation and the development of devices required for each link in the preliminary processing of walnut is discussed, and the working mechanism of each link type and its influence on the design of a corresponding device are summarized.
Journal ArticleDOI
Preparation and characterization of porous chitosan microspheres and adsorption performance for hexavalent chromium.
TL;DR: Porous chitosan microspheres provided adsorption sites of the amino and hydroxyl groups for the removal of Cr(VI) in detailed analysis of scanning electron microscopy, porosity and Fourier transform infrared spectra.
Journal ArticleDOI
A highly efficient conditioning process to improve sludge dewaterability by combining calcium hypochlorite oxidation, ferric coagulant re-flocculation, and walnut shell skeleton construction
Jialin Liang,Jinjia Huang,Siwei Zhang,Xian Yang,Shaosong Huang,Li Zheng,Maoyou Ye,Shuiyu Sun +7 more
TL;DR: In this article, the authors applied a sludge conditioning process involving calcium hypochlorite (Ca(ClO)2) oxidation, ferric coagulant re-flocculation, and walnut shell skeleton construction to remove extracellular polymeric substances (EPS) and bound water in sludge.
References
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Journal ArticleDOI
Adsorption, kinetics and equilibrium studies on removal of Cr(VI) from aqueous solutions using different low-cost adsorbents
TL;DR: In this article, the removal of Cr(VI) from aqueous solution by batch adsorption technique using different low-cost adsorbents was investigated, and the effect of pH, adsorbent type and concentration, initial Cr (VI) concentration and contact time on the selectivity and sensitivity of the removal process was investigated.
Journal ArticleDOI
Removal of chromium(VI) from aqueous solution by activated carbons: kinetic and equilibrium studies.
Lotfi Khezami,Richard Capart +1 more
TL;DR: The adsorption of hexavalent chromium (Cr(VI) is maximal at the lowest values of pH (pH 3) and increases with temperature for both adsorbents and the activation energy and the pre-exponential factor as well as the thermodynamic functions related to advertisersorption reaction were determined.
Journal ArticleDOI
Fixed-bed adsorption of reactive azo dye onto granular activated carbon prepared from waste.
Anees Ahmad,B.H. Hameed +1 more
TL;DR: The BGAC was shown to be suitable adsorbent for adsorption of RB5 using fixed-bed adsorptive column and fitted well to the Thomas and Yoon-Nelson models with coefficients of correlation R(2)>or=0.93 at different conditions.
Journal ArticleDOI
Toxicity and Carcinogenicity of Cr(VI) in Animal Models and Humans
TL;DR: There is suggestive evidence that hexavalent Cr causes increased risk of bone, prostate, lymphomas, Hodgkins, leukemia, stomach, genital, renal, and bladder cancer, reflecting the ability of Hexavalent chromate to penetrate all tissues in the body.
Journal ArticleDOI
Characterization of mesoporous rice husk ash (RHA) and adsorption kinetics of metal ions from aqueous solution onto RHA.
TL;DR: RHA was found to be an effective adsorbent for the removal of cadmium (Cd(II), nickel (Ni(II) and zinc (Zn(II)) metal ions from aqueous solutions and kinetics showed that the metal ions adsorption on RHA is a gradual process with quasi-equilibrium being attained in 5h.