scholarly journals Efficiency analysis of eggshell and tea waste as Low cost adsorbents for Cr removal from wastewater sample

2021 ◽  
Author(s):  
Purbita Saha Katha ◽  
Zia Ahmed ◽  
Rafiul Alam ◽  
Badhan Saha ◽  
Arup Acharjee ◽  
...  
Keyword(s):  
Low Cost ◽  
Efficiency Analysis ◽  
Wastewater Sample ◽  
Tea Waste ◽  
Cr Removal

scholarly journals Treatment of Poultry Wastewater Using Shells from African Cherry Seeds, Egg and Crab

2020 ◽  
pp. 16-30
Author(s):  
Abimbola O. Aleshinloye ◽  
Kemayou Ngangsso ◽  
Feyisara B. Adaramola ◽  
Adebayo Onigbinde
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Microwave Plasma ◽  
Low Cost ◽  
Chloride Content ◽  
Agricultural Wastes ◽  
Wastewater Sample ◽  
Animal Source ◽  
Removal Of Heavy Metals ◽  
Poultry Wastewater

This study investigated the potential of some agricultural wastes viz; African Star apple seed shell (ASS, plant source), crab shell (CS, animal source) and chicken egg shell (ES, animal source) as eco-friendly and low-cost biological materials for the removal of heavy metals from poultry wastewater. TS, TSS and TDS of the wastewater sample were assayed by filtration methods, chloride content by previously reported method and heavy metal contents (Zn, V, Cd, Fe, Ni, Cu, Co, Pb, Cr and Mn); were analyzed using Microwave Plasma Atomic Emission Spectrometer. The results of the solids and chloride contents of the poultry wastewater were TDS (3100 mg/L), TS (3700 mg/L), TSS (6000 mg/L) and chloride (4.7 g/L); all above the EPA permissible limits. Results of the FTIR analysis showed that ASS is an amide polymer while the CS and ES shells are mixtures of amide and carbonate polymers. Also, results of heavy metal analysis before and after adsorption showed that ASS caused removal of Zn, V, Fe, Cu, Co/ Pb and Mn by 48.27, 32.22, 49.64, 91.44, 100 and 82.39% respectively while Cd, Ni and Cr contents increased by 31, 61 and 48.3% respectively. CS showed removal of Fe, Ni/ Co/ Cr, Pb and Mn by 89.64, 100, 3.51 and 95.96% respectively while Zn, V, Cd and Cu contents increased by 1.7, 61.2, 76.1 and 68.1% respectively. Meanwhile, with ES, the contents of Zn, Fe, Ni, Cu, Cr and Mn increased by 31.56, 86.36, 100, 55.5, 45.80 and 90.33% respectively while the contents of V, Cd, Co and Pb decreased by 78.9, 86.7, 42.5 and 46.2% respectively. This study demonstrated the use of ASS, CS and ES as low- cost and eco-friendly agricultural wastes with significant potential for removal of heavy metals from wastewaters.

scholarly journals Adsorption capability of brewed tea waste in waters containing toxic lead(II), cadmium (II), nickel (II), and zinc(II) heavy metal ions

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Hakan Çelebi ◽  
Gülden Gök ◽  
Oğuzhan Gök
Keyword(s):  
Heavy Metals ◽  
Adsorption Process ◽  
Low Cost ◽  
Adsorption Capacities ◽  
Tea Waste ◽  
Optimum Ph ◽  
Effects Of Ph ◽  
Equilibrium Data ◽  
Langmuir Isotherm Model ◽  
Adsorption Capability

Abstract Recently, the search for low-cost eco-friendly adsorbents has become one of the main objectives of researchers. The aim of this study was to test the removal of four heavy metals, namely lead (Pb), zinc (Zn), nickel (Ni) and cadmium (Cd), from a simulated watery solution using brewed tea waste as a potentially suitable adsorbent. The effects of pH levels (2.0–6.0), adsorbent amount (0.1–5.0 g), contact times (1–150 min.) were examined throughout the adsorption process. The results of the experiments showed that the heavy metals elimination yields had an inverse relationship with pH and a linear relationship between the other parameters. The optimum pH for the removal of the heavy metals was between 4.0 and 5.0 in the case of the brewed tea waste. Equilibrium times of 2, 10, 30 and 5 min were required for the adsorption of Pb, Zn, Ni, Cd onto Camellia sinensis, respectively. Based on the results of this study it can be said that brewed tea waste has a high potential to remove heavy metals from aqueous solutions. The maximum adsorption capacities were calculated as 1.197, 1.457, 1.163 and 2.468 mg/g, for Pb, Zn, Ni and Cd, respectively, by fitting the equilibrium data to the Langmuir isotherm model.

Low-cost and advanced symmetry supercapacitors based on three-dimensional tea waste of porous carbon nanosheets

2020 ◽  
Vol 36 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Peng Zhang ◽  
Wenxian Wang ◽  
Zimin Kou ◽  
Bo Wang ◽  
Xiaobin Zhong
Keyword(s):  
Porous Carbon ◽  
Low Cost ◽  
Three Dimensional ◽  
Carbon Nanosheets ◽  
Tea Waste

Sulfonated tea waste: A low-cost adsorbent for purification of biodiesel

2015 ◽  
Vol 13 (1) ◽  
pp. 110-118 ◽  
Author(s):  
Abdelrahman B. Fadhil ◽  
Liqaa I. Saeed
Keyword(s):  
Low Cost ◽  
Tea Waste

scholarly journals Adsorption of manganese and zinc in synthetic wastewater by tea waste (TW) as a low cost adsorbent

2019 ◽  
Vol 1349 ◽  
pp. 012061 ◽  
Author(s):  
S Badrealam ◽  
V C Darrell ◽  
Z Dollah ◽  
M F P Mohamed Latiff ◽  
R Handan
Keyword(s):  
Low Cost ◽  
Synthetic Wastewater ◽  
Tea Waste

Tea waste residue as low-cost biosorbent for treatment of 2 chlorophenol

2021 ◽  
Author(s):  
Nornasuha Abdullah ◽  
Nurul Ainirazali ◽  
Muhammad Najmuddin Mukhtar
Keyword(s):  
Low Cost ◽  
Tea Waste

scholarly journals Modification of tea biochar with Mg, Fe, Mn and Al salts for efficient sorption of PO43− and Cd2+ from aqueous solutions

2018 ◽  
Vol 9 (1) ◽  
pp. 57-66 ◽  
Author(s):  
Gökçen Akgül ◽  
Tuğba Bolat Maden ◽  
Elena Diaz ◽  
Eduardo Moreno Jiménez
Keyword(s):  
Aqueous Solutions ◽  
Low Cost ◽  
Adsorption Properties ◽  
Pollutant Removal ◽  
Metal Salts ◽  
Contaminated Water ◽  
Surface Functionality ◽  
Inorganic Pollutant ◽  
Tea Waste

Abstract There is a requirement to provide more efficient, sensitive, low-cost materials for remediation of contaminated water. Biochar as a sorbent is an effective and low-cost material to remove contaminants in water but its adsorption properties can be improved by impregnation of metals on the surface. In this study, a biochar derived from industrial tea waste was modified with Mg, Fe, Mn and Al salts to create different composites, which were tested for PO43− and Cd2+ sorption. The modifications created biochars with the (hydr)oxides of each metal and changed the characterization parameters and surface functionality. Cd2+ was efficiently removed by all the materials even at high Cd2+ loadings in the water (100 mg Cd2+ L−1), the biochar with Mg being the most efficient in Cd2+ removal. The biochar with Mg also achieved the best sorption of PO43−, sorbing up to 30% at 20 mg PO43− L−1. Tea waste biochar can be modified with metal salts to enhance inorganic pollutant removal from waters, especially with Mg salts.

Adsorption of Cadmium(II) Ion from Aqueous Solution onto a Raw Material of Bamboo Powder and its Surface Modification

2018 ◽  
Vol 879 ◽  
pp. 131-136 ◽  
Author(s):  
Woravith Chansuvarn ◽  
Yuttapoom Pandee ◽  
Ariya Saechim ◽  
Kritsana Habunmee
Keyword(s):  
Adsorption Capacity ◽  
Low Cost ◽  
Freundlich Isotherm ◽  
Raw Material ◽  
Wastewater Sample ◽  
Adsorption Parameters ◽  
Freundlich Isotherms ◽  
Monolayer Adsorption ◽  
Adsorptive Behavior ◽  
Bamboo Powder

This work was focused on evaluating the potential of bamboo powder modified with manganese oxide (MnO-BP) as a low-cost byproduct adsorbent for the adsorption of cadmium(II) ion. A batch method was carried out at room temperature and the optimized conditions. The optimization of adsorption parameters including pH, equilibrium time, dosage and initial Cd(II) concentration was also systematically studied for the removal of cadmium(II) ion. The maximum monolayer adsorption capacity of MnO-BP was estimated as 8.57 mg/g that it more adsorption capacity than untreated-bamboo powder by about 5 times. The Langmuir and the Freundlich isotherms were used to describe the adsorptive mechanism and calculated the maximum monolayer adsorption capacity. It was found that the data from MnO-BP fitted well to the Freundlich isotherm with R2>0.99. It indicated that the adsorptive behavior of MnO-BP to cadmium(II) ion is preferable. In this work, MnO-BP was used for the removal of cadmium(II) ion in wastewater sample. The MnO-BP is a low-cost adsorbent that can be used to remove cadmium(II) effectively.

Adsorption of Copper (II) from Aqueous Solution Using Tea (Camellia sinensis) Leaf Waste

2020 ◽  
Vol 997 ◽  
pp. 113-120
Author(s):  
Hafizah Binti Naihi
Keyword(s):  
Heavy Metal ◽  
Contact Time ◽  
Metal Removal ◽  
Binding Capacity ◽  
Low Cost ◽  
Agricultural Waste ◽  
Heavy Metal Removal ◽  
Batch Adsorption ◽  
Biological Origin ◽  
Tea Waste

The extensive use of heavy metals such as copper in various industries has discharged a large amount of the metals into the environment which is toxic at higher concentrations. The use of low-cost agricultural waste of biological origin such as tea waste may be an economic solution to this problem. Tea waste is among the potential material to be developed as an adsorbent for heavy metal ions. Tea waste contains cellulose and lignin which have been reported having an excellent metal binding capacity. This study aims to use tea waste for the removal of Cu2+ ions. The effect of variation in different parameters like initial concentration of Cu2+ ions in solution, adsorbent dosage and contact time were investigated using batch adsorption method. The adsorbent, tea waste was characterized using a compound microscope and FTIR spectroscopy. Experimental results showed that the maximum removal of the copper ion by tea waste at optimum condition (pH 7, 60 min. contact time, 0.8 g adsorbent dose and 0.7 M concentration) is 74%. The adsorbent prepared from tea waste is efficient and it can be conveniently employed as a low-cost alternative in the treatment of wastewater for heavy metal removal.

Sign in / Sign up

Export Citation Format

Share Document