scholarly journals Facile Synthesis of Nanostructured Zno-rgo Based Graphene and It’s Application in Waste Water Treatment

2021 ◽  
Author(s):  
Rania Ramadan ◽  
Seham K. Abdel-Aal
Keyword(s):  
Waste Water ◽  
Graphene Oxide ◽  
Water Treatment ◽  
Removal Efficiency ◽  
Environmental Contamination ◽  
Single Phase ◽  
Waste Water Treatment ◽  
Harmful Effect ◽  
Accurate Method ◽  
Facile Synthesis

Abstract In the present work graphene oxide GO prepared by chemical exifliation of graphite using Hummer’s method. A facile and green synthesis of ZnO-rGO nanocomposite was performed via Alovera plant extract. The characterization tools (XRD-FTIR- FESEM-TEM- AFM) proved the formation of single phase of ZnO-rGO nanocomposite. Since the environmental contamination caused by Cd(II) ion is a world issue as it has a harmful effect especially on the human health and environment. Subsequently, our goal in this work is to find an accurate method for detection and adsorption of toxic Cd(II). ZnO and ZnO-rGO nanocomposites are prepared for removing Cd(II) and on behalf of increasing its removal efficiency, GO is added. The results showed a great improvement in removal efficiency reached up to 90% at pH 6 after 90 min. the structure and surface of prepared samples studied through XRD, FTIR, FESEM and AFM.

REVIEWS OF ELECTROCOAGULATION PROCESS ON WASTE WATER TREATMENT TECHNOLOGY

2017 ◽  
Vol 9 (1) ◽  
Author(s):  
Taty Hernaningsih
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Removal Efficiency ◽  
Industrial Waste ◽  
Waste Water Treatment ◽  
Treatment Technique ◽  
Industrial Waste Water ◽  
Strong Current ◽  
Current Voltage ◽  
Electrocoagulation Process

Waste water treatment by industry usually uses chemicals that may lead to additional environmental pollution load. On the other hand, water demand increases and environmental regulations regarding waste water disposal requirements that apply more stringent. It is necessary for waste treatment technique that accommodate this requirement. Electrocoagulation process is a technique of wastewater treatment that has been chosen because the technique is environmentally friendly. This paper will review some of the research or application electrocoagulation process which is conducted on industrial waste water. Types of industrial waste water that is to be reviewed include: industries batik, sarongs, textiles, palm oil, slaughterhouses, food, leather tanning, laundry, pulp and paper. Overview reviewed in this research include the waste water treatment process in several processing variations such as: change in time, electricity and kind of electrodes. The results of the research with electrocoagulation process in the industry are the removal efficiency of TSS, COD, BOD5, Chrome, phosphate, surfactants, color turbidity influenced by several factors including time, strong current, voltage, distance and type of electrode and pH. The results of the study with electrocoagulation process in the industry is the removal efficiency of TSS, COD, BOD5, chromium, phosphate, surfactant, turbidity color that are influenced by several factors including time, strong current, voltage, distance and type of electrode and pH. It is hoped the information presented in this article can be a reference for similar research for the improvement of research on the process ektrokoagulasi.Key words: elektrocoagulation, removal eficiency, environmental friendly

Fabrication of Fe3O4@reduced graphene oxide composite via novel colloid electrostatic self-assembly process for removal of contaminants from water

2015 ◽  
Vol 3 (2) ◽  
pp. 832-839 ◽  
Author(s):  
Jie Ding ◽  
Baojun Li ◽  
Yushan Liu ◽  
Xiaoshe Yan ◽  
Sha Zeng ◽  
...  
Keyword(s):  
Waste Water ◽  
Graphene Oxide ◽  
Water Treatment ◽  
Reduced Graphene Oxide ◽  
Self Assembly ◽  
Waste Water Treatment ◽  
Assembly Process ◽  
Oxide Composite ◽  
Reduced Graphene ◽  
Potential Applications

Fe3O4@reduced graphene oxide composite (FGNC) was synthesised, and for rhodamine B (RhB) and As5+ removal, the excellent behavior of FGNC highlights 3 potential applications in waste water treatment.

Facile synthesis of chitin nanocrystals decorated on 3D cellulose aerogels as a new multi-functional material for waste water treatment with enhanced anti-bacterial and anti-oxidant properties

2017 ◽  
Vol 41 (21) ◽  
pp. 12746-12755 ◽  
Author(s):  
Sreerag Gopi ◽  
Preetha Balakrishnan ◽  
Chandradhara Divya ◽  
Srecko Valic ◽  
Emi Govorcin Bajsic ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Cellulose Nanofibers ◽  
Functional Material ◽  
Facile Synthesis ◽  
Anti Oxidant

We report the fabrication and application of multi-functional hybrid bio-aerogels based on cellulose nanofibers (CNFs) and chitin nanocrystals (CNCs).

scholarly journals Evaluation of Waste Water Treatment Units Located at Different Parts of Nepal

2012 ◽  
Vol 12 ◽  
pp. 201-210 ◽  
Author(s):  
Janardan Lamichhane ◽  
Bimal B Upadhyaya ◽  
Nishant Chalise ◽  
Sudeep Makaju
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Removal Efficiency ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Household Waste ◽  
Water Runoff ◽  
Water Treatment Plants ◽  
Waste Water Treatment Plants ◽  
Reed Bed

Sewage including liquids from household waste to industry and commerce effluent along with storm water runoff carries various contaminants including soil particles, heavy metals, organic compounds, animals waste, oils and grease which are required to be treated before they are discharged directly to the water into waterways. Various waste water treatment plants established in different part of Nepal include small to large scale treatment of waste discharge. The evaluation of all those plants by scientific mean was carried out for the recommend of standard of treatment plant suitable to the country. Among the plants under study, removal efficiency of TSS, TDS and TS was found highest in KU reed bed systems with 97.5, 74.3 and 95.6% respectively. Similarly, removal efficiency of chemical compounds such as NH3, N2, NO3 2-, Cl-, PO3 2- and COD were found highest in KU and DH reed bed system ranging from 98 to 33.3 % whereas BOD was found highest, 93.1 and 82.1% in HIDWTP and BASP respectively. pH and conductivity measurement and comparison indicates the requirement of continuous use and maintenance of the plant. This could be one of the major ways to inform the government about the maintenance, sustainability and importance of ongoing operation of waste water treatment plants of Nepal in cost effective manner.DOI: http://dx.doi.org/10.3126/njst.v12i0.6500 Nepal Journal of Science and Technology 12 (2011) 201-210

Anchoring superparamagnetic core–shells onto reduced graphene oxide: fabrication of Ni–carbon–rGO nanocomposite for effective adsorption and separation

RSC Advances ◽  
2015 ◽  
Vol 5 (13) ◽  
pp. 10033-10039 ◽  
Author(s):  
Hang Du ◽  
Zhen Wang ◽  
Yinghao Chen ◽  
Yanyan Liu ◽  
Yushan Liu ◽  
...  
Keyword(s):  
Waste Water ◽  
Graphene Oxide ◽  
Water Treatment ◽  
Reduced Graphene Oxide ◽  
Separation Efficiency ◽  
Organic Dyes ◽  
Waste Water Treatment ◽  
Ni Nanoparticles ◽  
Reduced Graphene

The magnetic Ni nanoparticles encapsulated in carbon shells were anchored on to reduced graphene oxide. The excellent removal ability of organic dyes and enhanced separation efficiency make NGC a useful candidate for waste water treatment.

Reduced graphene oxide-decorated CdS/ZnO nanocomposites for photoreduction of hexavalent chromium and photodegradation of methylene blue

2021 ◽  
Author(s):  
Ajay Lathe ◽  
Anil M. Palve
Keyword(s):  
Waste Water ◽  
Methylene Blue ◽  
Graphene Oxide ◽  
Water Treatment ◽  
Reduced Graphene Oxide ◽  
Hexavalent Chromium ◽  
Waste Water Treatment ◽  
Photo Degradation ◽  
Reduced Graphene ◽  
Plausible Mechanism

Graphene oxide decorated CdS and ZnO nanocomposites for waste water treatment and their plausible mechanism for photo-degradation and photo-reduction.

Sign in / Sign up

Export Citation Format

Share Document