The use of biochar-NH2 produced from watermelon peels as a natural adsorbent for the removal of Cu(II) ion from water

2022 ◽  
Author(s):  
Mohamed A. El-Nemr ◽  
Uyiosa O. Aigbe ◽  
Mohamed A. Hassaan ◽  
Kingsley E. Ukhurebor ◽  
Safaa Ragab ◽  
...  
Keyword(s):  
Natural Adsorbent

Cost Effective Wastewater Treatment by Natural Adsorbent

2018 ◽  
Vol 8 (4) ◽  
pp. 777-785
Author(s):  
Mahmudur Rahman Idris ◽  
Md. Arifuzzaman ◽  
Arnob Basak ◽  
Tonmoy Saha and Jarin Yasmin
Keyword(s):  
Wastewater Treatment ◽  
Cost Effective ◽  
Natural Adsorbent

scholarly journals Investigation of Seeds and Peels of Citrullus colocynthis as Efficient Natural Adsorbent for Methylene Blue Dye

Processes ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 1279
Author(s):  
Wafa Mohammed Alghamdi ◽  
Ines El Mannoubi
Keyword(s):  
Methylene Blue ◽  
Kinetic Model ◽  
Langmuir Isotherm ◽  
Order Kinetic ◽  
Citrullus Colocynthis ◽  
Natural Adsorbent ◽  
Spontaneous Process ◽  
Equilibrium Data ◽  
Order Kinetic Model ◽  
Mb Adsorption

Natural adsorbents as low-cost materials have been proved efficient for water remediation and have significant capacity for the removal of certain chemicals from wastewater. The present investigation aimed to use Citrullus colocynthis seeds (CCSs) and peels (CCPs) as an efficient natural adsorbent for methylene blue (MB) dye in an aqueous solution. The examined biosorbents were characterized using surface area analyzer (BET), scanning electron microscope (SEM), thermogravimetric analyzer (TGA) and Fourier transform infra-red (FT-IR) spectroscopy. Batch adsorption experiments were conducted to optimize the main factors influencing the biosorption process. The equilibrium data for the adsorption of MB by CCSs were best described by the Langmuir isotherm followed by the Freundlich adsorption isotherms, while the equilibrium data for MB adsorption by CCPs were well fitted by the Langmuir isotherm followed by the Temkin isotherm. Under optimum conditions, the maximum biosorption capacity and removal efficiency were 18.832 mg g−1 and 98.00% for MB-CCSs and 4.480 mg g−1 and 91.43% for MB-CCPs. Kinetic studies revealed that MB adsorption onto CCSs obeys pseudo-first order kinetic model (K1 = 0.0274 min−1), while MB adsorption onto CCPs follows the pseudo-second order kinetic model (K2 = 0.0177 g mg−1 min−1). Thermodynamic studies revealed that the MB biosorption by CCSs was endothermic and a spontaneous process in nature associated with a rise in randomness, but the MB adsorption by CCPs was exothermic and a spontaneous process only at room temperature with a decline in disorder. Based on the obtained results, CCSs and CCPSs can be utilized as efficient, natural biosorbents, and CCSs is promising since it showed the highest removal percentage and adsorption capacity of MB dye.

Enhanced toxic dye removal from wastewater using biodegradable polymeric natural adsorbent

2021 ◽  
Vol 328 ◽  
pp. 115468 ◽  
Author(s):  
Khadiza Tul Kubra ◽  
Md. Shad Salman ◽  
Md. Nazmul Hasan
Keyword(s):  
Dye Removal ◽  
Natural Adsorbent

scholarly journals Zeolite as a natural adsorbent for nitrogenous compounds removal from water

2021 ◽  
Vol 1058 (1) ◽  
pp. 012009
Author(s):  
M Abdulredha ◽  
N R Kadhim ◽  
Ameer H Hussein ◽  
Mohammad Almutairi ◽  
Rafid Alkhaddar ◽  
...  
Keyword(s):  
Nitrogenous Compounds ◽  
Natural Adsorbent

Recycling of Greywater (GW) through Natural Adsorbents

2018 ◽  
Vol 7 (3.12) ◽  
pp. 1140 ◽  
Author(s):  
Mukesh Chandra Kestwal ◽  
Ravi Kumar Patel ◽  
Benoit Teychene ◽  
Prasenjit Mondal ◽  
Sukdeb Pal ◽  
...  
Keyword(s):  
Water Availability ◽  
Water Scarcity ◽  
Secondary Treatment ◽  
Valuable Resource ◽  
Simple Method ◽  
Household Level ◽  
Natural Adsorbent ◽  
Minimum Change ◽  
Natural Adsorbents ◽  
Individual Household

Reuse of water has been a popular choice toward balancing water scarcity and managing water availability in defined areas.  GW which can be defined as the wastewater that comprises water from baths, showers etc, when managed and treated properly could be valuable resource for sectors like agricultural and horticultural. GW is one of the best option if treated and if not, it will mix with the sewage stream. It is possible to intercept this GW at the household level using minimum change in design, and with the primary and secondary treatment it can be recycled for garden washing, flushing and many purposes. In the present work, GW from student accommodation were collected, characterized and treated through series of natural adsorbent. Various parameters such as TDS, pH, Turbidity, BOD,COD, amount of nitrate and phosphorus were measured and it was found that most of the parameters were considerably in range after treatment.  A simple method has been proposed that may be applied at individual household level. 

Lignin – from natural adsorbent to activated carbon: A review

2007 ◽  
Vol 98 (12) ◽  
pp. 2301-2312 ◽  
Author(s):  
Suhas ◽  
P.J.M. Carrott ◽  
M.M.L. Ribeiro Carrott
Keyword(s):  
Activated Carbon ◽  
Natural Adsorbent

scholarly journals Kinetic and Equilibrium Isotherms Studies of Adsorption of Pb(II) from Water onto Natural Adsorbent

2014 ◽  
Vol 05 (17) ◽  
pp. 1667-1681 ◽  
Author(s):  
Taha M. Elmorsi ◽  
Zeinhom H. Mohamed ◽  
Walied Shopak ◽  
Ahmed M. Ismaiel
Keyword(s):  
Equilibrium Isotherms ◽  
Natural Adsorbent

scholarly journals APLIKASI ALOFAN DALAM TANAH ANDISOL SEBAGAI ADSORBEN UNTUK MENURUNKAN BAKTERI Coliform LIMBAH CAIR DOMESTIK

2018 ◽  
Vol 14 (2) ◽  
pp. 99
Author(s):  
Ibnu Rois ◽  
Pranoto Pranoto ◽  
Sunarto Sunarto
Keyword(s):  
Pore Size ◽  
Domestic Wastewater ◽  
Empty Space ◽  
Most Probable Number ◽  
Probable Number ◽  
Natural Adsorbent ◽  
Adsorbent Materials

Research on allophane has been done as an adsorbent to decrease MPN Coliform in domestic wastewater. The purpose of this study was to look for natural adsorbent materials that can be used to decrease MPN Coliform. Natural allophane was identified from andisol soil by pH analysis of NaF, FTIR, XRD, and SAA. The result of the analysis showed that there was allophane on andisol soil with pH 11,73. The diameter of empty space or alloy pores of 5 nm with a hole/pore size of 0.5 nm. Testing of MPN Coliform is done by method of Most Probable Number (MPN) variety 5: 5: 5. Based on the result of the research, allophane adsorbent can decrease MPN Coliform by 60.9%.

scholarly journals APPLICATION OF THE ACEROLA SEED (MALPIGHIA EMARGINATA) AS A NATURAL ADSORBENT FOR GROUNDWATER SOFTENING

2018 ◽  
Vol 15 (29) ◽  
pp. 49-55
Author(s):  
A. C. P. da SILVA ◽  
F. P. de ANDRADE JUNIOR ◽  
V. A. da COSTA ◽  
D. D. da SILVA
Keyword(s):  
Total Dissolved Solids ◽  
Total Hardness ◽  
Adsorption Potential ◽  
Inorganic Pollutants ◽  
Natural Adsorbent ◽  
Natural Adsorbents ◽  
Before And After ◽  
Malpighia Emarginata ◽  
New Treatment

With increasing contamination of water by various pollutants, which makes this resource increasingly scarce and unfit for use, there is a need to develop new treatment methods that are accessible, efficient, renewable and do not produce polluting waste that degrades the environment. Due to this the use of natural adsorbents has become one of the most investigated alternatives for the treatment of waters whether for the removal of organic or inorganic pollutants. This work aims to study the adsorption potential of a natural adsorbent from acerola seed by means of column chromatography to adjust the total hardness of groundwater after the characterization of physicochemical parameters such as pH, electrical conductivity, Turbidity, total dissolved solids, chlorides, alkalinity and total hardness. The adsorbent samples before and after being used for the treatment were characterized by infrared absorption spectroscopy (FTIR), scanning electron microscopy (SEM). The use of the natural adsorbent obtained from the acerola seed was very effective for the treatment of hardness of the analyzed.

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