scholarly journals Enhanced phosphate sequestration by Fe(iii) modified biochar derived from coconut shell

RSC Advances ◽  
2019 ◽  
Vol 9 (18) ◽  
pp. 10425-10436 ◽  
Author(s):  
Zhenxing Zhong ◽  
Guowen Yu ◽  
Wenting Mo ◽  
Chunjie Zhang ◽  
Hao Huang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Coconut Shell ◽  
Modified Biochar ◽  
Coconut Shell Biochar

In this work, a novel Fe-modified coconut shell biochar (Fe-CSB) was synthesized and utilized to remove phosphate from aqueous solution.

scholarly journals Coconut Shell Biochar for Removal of Cu(II) from Aqueous Solution

2020 ◽  
Vol 21 (2) ◽  
pp. 282-292
Author(s):  
Nur Hanani Hasana
Keyword(s):  
Aqueous Solution ◽  
Particle Size ◽  
Removal Efficiency ◽  
Contact Time ◽  
Ph Value ◽  
Proximate Analysis ◽  
Coconut Shell ◽  
Basic Characteristics ◽  
The Individual ◽  
Coconut Shell Biochar

The ability of coconut shell biochar (CSB) and acid-base modified coconut shell biochar (MCSB) for the removal of copper (Cu(II)) from aqueous solution is examined. The basic characteristics of CSB as well as MCSB such as proximate analysis, pH value, surface area, surface morphology and surface functional groups are investigated. The individual effect of initial concentration and contact time on the removal efficiency of Cu(II) by CSB and MCSB was determined using one variable at a time (OVAT) approach. In addition, the response surface methodology (RSM) approach is applied to determine the combined effects of variables (pH, contact time and particle size) on the removal efficiency of Cu(II) ion. The RSM results for the MCSB showed that Cu(II) maximum removal efficiency is 99.50% at pH 7, contact time of 60 min, and particle size of 0.60 mm, respectively. It can be concluded that MCSB has greater potential than CSB to be utilized as an adsorbent for Cu(II) removal in water bodies.

scholarly journals Adsorption of Cr(VI) from wastewater by iron-modified coconut shell biochar

2021 ◽  
Vol 248 ◽  
pp. 01059
Author(s):  
Jiangping Bu ◽  
Wenyu Li ◽  
Ning Niu ◽  
Ning Guo ◽  
Hao Zhou ◽  
...  
Keyword(s):  
Functional Groups ◽  
Removal Rate ◽  
Coconut Shell ◽  
Surface Functional Groups ◽  
Adsorption Time ◽  
Adsorbent Dosage ◽  
Modified Biochar ◽  
Lower Abundance ◽  
Coconut Shell Biochar

This study is aimed to investigate the effect of raw and Fe-modified coconut shell biochar on the adsorption of Cr(VI) in the wastewater. Fe-modified biochar was obtained from the impregnation with FeNO3 solutions and the surface functional groups of two biochars were examined by infrared spectrometer.The result showed that the Fe-modified biochar had lower abundance of the surface functional groups than that of raw biochar, and had the group of Fe-O.The removal rate of Cr(VI) increased by 94.89% compared with the raw biochar because of existing of the group of Fe-O . The removal rate of Cr(VI) by modified biochar could reach more than 99.0% when the concentration of Cr(VI) was 12μg/ mL, pH 4.0, adsorbent dosage was 0.2g and adsorption time was 2h.

scholarly journals Adsorption of Phenol from Aqueous Solution Using Activated Carbon prepared from Coconut Shell

2017 ◽  
Vol 29 (1) ◽  
pp. 9-13
Author(s):  
Masuma Sultana Ripa ◽  
Rafat Mahmood ◽  
Sabrina Khan ◽  
Easir A Khan
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Adsorption Isotherm ◽  
Iodine Number ◽  
Chemical Engineering ◽  
Coconut Shell ◽  
Physical Activation ◽  
Batch Adsorption ◽  
Adsorption Model ◽  
Solution Ph

Adsorption separation of phenol from aqueous solution using activated carbon was investigated in this work. The adsorbent was prepared from coconut shell and activated by physical activation method. The coconut shell was first carbonized at 800°C under nitrogen atmosphere and activated by CO2 at the same temperature for one hour. The prepared activated carbon was characterized by Scanning Electron Microscope (SEM) and BET Surface Analyzer and by the determination of iodine number as well as Boehm titration. The iodine number indicates the degree of relative activation of the adsorbent. The equilibrium adsorption isotherm phenol from aqueous solution was performed using liquid phase batch adsorption experiments. The effect of experimental parameters including solution pH, agitation time, particle size, temperature and initial concentration was investigated. The equilibrium data was analyzed using Langmuir and Freundlich adsorption model to describe the adsorption isotherm and estimate the adsorption isotherm parameters. The results indicate the potential use of the adsorbent for removal of phenol from the aqueous solution.Journal of Chemical Engineering, Vol. 29, No. 1, 2017: 9-13

Adsorption of cadmium and lead from aqueous solution using modified biochar: A review

2021 ◽  
pp. 106502
Author(s):  
Tianqi Liu ◽  
Yelly Lawluvy ◽  
Yang Shi ◽  
Joshua O. Ighalo ◽  
Yide He ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Modified Biochar ◽  
Cadmium And Lead

Simultaneous removal of Cd(II) and As(III) from co-contaminated aqueous solution by α-FeOOH modified biochar

Biochar ◽  
2020 ◽  
Vol 2 (1) ◽  
pp. 81-92 ◽  
Author(s):  
Sihang Zhu ◽  
Ting Qu ◽  
Muhammad Kashif Irshad ◽  
Jianying Shang
Keyword(s):  
Aqueous Solution ◽  
Simultaneous Removal ◽  
Modified Biochar
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