Adsorption behavior of lead, cadmium, and arsenic on …
Adsorption behavior of lead, cadmium, and arsenic on manganese‑modied biochar: competition and promotion ... Among the modied metals, manganese oxide exhibits an excellent adsorption performance and a high specic surface area. It can bind to heavy met-
Enhanced removal of heavy metal ions from aqueous …
Article. Open access. Published: 08 April 2020. Enhanced removal of heavy metal ions from aqueous solution using manganese dioxide-loaded biochar: Behavior …
Adsorption behavior of lead, cadmium, and arsenic on …
In this study, the adsorbent was prepared by pyrolysis of rice straw loaded with manganese (BC-Mn). The interactions of Pb, Cd and As adsorption on BC-Mn …
Studies on adsorption characteristics of manganese onto …
In present work, adsorption of Manganese ions from aqueous medium using coal based granular activated carbon filtrasorb-300 and filtrasorb-820 modified by 1,2-Benzenediamine was used for a surface modification of the selected adsorbent.
Cd(II) adsorption from aqueous solution by raw and modified …
Cadmium adsorption performance and mechanism from aqueous solution using red mud modified with amorphous MnO2. Yin Pang Cong Zhao +4 authors Tao Huang. Environmental Science, Chemistry. Scientific Reports. 2022; In this study, red mud modified by manganese dioxide(MRM) was utilized as an adsorbent to effectively …
Effects and mechanism on cadmium adsorption removal by CaCl2-modified
As every-one knows, cadmium contamination poses a significant and permanent threat to people and aquatic life. Therefore, research on how to remove cadmium from wastewater is essential to protect the natural environment. In this study, agricultural and forestry waste straw sprayed with selenium-enri …
Transformation of As and Cd associated with Fe–Mn-modified …
It was possible that alkaline substances in BC competed with As for adsorption sites in the soil. Moreover, ... Zeng G, Si M, Dong C, Liao Q, He F, Johnson VE, Arinzechi C, Yang W, Yang Z (2024) Adsorption behavior of lead, cadmium, and arsenic on manganese-modified biochar: competition and promotion. Environ Geochem Health …
Adsorption of cadmium, nickel and lead ions: equilibrium, …
The adsorption was found to depend on the homoionic form of the zeolite and to a lesser extent the source of theZeolite, revealing the potential of clinoptilolite in metal-polluted industrial effluent treatment. The performance of modified clinoptilolites (zeolites) from two different sources (South Africa and the USA) for the adsorption of …
Simultaneous adsorption of lead and cadmium on MnO2 …
The adsorption behaviour of both No. 2 Simultaneous adsorption of lead and cadmium on MnO 2 -loaded resin 229 Pb 2+ and Cd 2+ followed the Langmuir adsorption isotherm with a maximum adsorption capacity of 80.64 mg/g and 21.45 mg/g, respectively. The adsorption process obeyed the pseudo first-order kinetics model.
Exploring adsorption capacity and mechanisms involved in cadmium …
Enhanced removal of heavy metal ions from aqueous solution using manganese dioxide-loaded biochar: Behavior and mechanism ... The mechanism of cadmium sorption by sulphur-modified wheat straw ...
Cadmium adsorption on manganese modified bentonite and …
Modified bentonite granulars (MBGs) were prepared by acidification, natrification, calcination, and combined modification methods, and evaluated as effective in-situ …
Cadmium adsorption on manganese modified bentonite and …
A simple modification of this mixture by manganese oxides could lead to a radical rise of its adsorption capacity. The main aim is to prepare low-cost adsorbents for the removal of hazardous compounds from aqueous solutions as an alternative to …
Mechanism Study of Cadmium(Ⅱ) Adsorption on Thiol-Modified …
Montmorillonite (MMT) is a good sorbent of cadmium, but the adsorbability is weak. Thiol-Modified Montmorillonite could increase the adsorption of cadmium, but the studies about thiol-modified montmorillonite (MMT-SH) and the adsorption mechanism of cadmium on MMT-SH are rarely reported. In this study, the MMT-SH was prepared …
Materials | Free Full-Text | Adsorption of Cadmium, Manganese …
The adsorption process of cadmium ions (Cd), manganese ions (Mn) and lead ions (Pb) onto the spent coffee grounds (SCG) and activated spent coffee grounds (biochar, A-SCG) was investigated. The SCG activation was carried out in the pyrolysis process in a fluidized bed reactor. scanning electron microscope (SEM) with energy …
Simultaneous removal of arsenite and cadmium by a manganese …
Biochar (BC) pyrolyzed using solid waste has attracted increasing attention for wastewater treatment, while pure BC has limitations in the simultaneous removal of arsenite (As(iii)) and cadmium (Cd(ii)). Herein, a novel manganese-crosslinking sodium alginate modified biochar and zerovalent iron composite (Mn
Cadmium Ion Adsorption on Different Carbon Adsorbents …
Adsorption of Cd(II) species at pH = 5 was studied on three carbon adsorbents: granular activated carbon, activated carbon fiber, and activated carbon cloth. As-received and oxidized adsorbents were used. Cd(II) adsorption greatly increased after oxidation due to the introduction of carboxyl groups. The use of a buffer solution to …
Simultaneous removal of arsenite and cadmium by a …
Herein, a novel manganese-crosslinking sodium alginate modified biochar and zerovalent iron composite (Mn/SA-BC@nZVI) was prepared for the simultaneous removal of As ( …
Adsorption of cadmium and lead ions by phosphoric acid-modified …
To improve the adsorption efficiency, a H 3 PO 4-modified biochar (CFCP) was prepared using chicken feather and applied to Cd 2+ and Pb 2+ adsorption. The pseudo-second-order model could explain the Cd 2+ and Pb 2+ adsorption behavior. CFCP had faster adsorption rate than non-modified biochar (CFC2).
Insights into remediation of cadmium and lead
In this study, iron-manganese modified biochar (FMBC) with high adsorption properties was prepared from broad bean straw using FeCl 3 ·6 H 2 O and KMnO 4 for the remediation of soil contaminated with a mixture of Cd and Pb. This study aimed to achieve the following objectives: (1) analyze the impact of Fe-Mn modification …
Cadmium adsorption performance and mechanism from …
In this study, red mud modified by manganese dioxide (MRM) was utilized as an adsorbent to effectively remove Cd 2+ from aqueous solution. The characteristics …
Manganese-modified biochar for highly efficient sorption of cadmium
In this study, corn stalk was modified by manganese (Mn) before (MBC 1) and after (MBC 2) pyrolysis at different temperatures (400~600 °C) under anaerobic conditions for Cd sorption in both water and soil.Batch experiments in aqueous solution were conducted to evaluate the optimum sorption capability by biochar with and without manganese …
IJERPH | Free Full-Text | The Adsorption of Cd(II) on Manganese …
Manganese (Mn) oxide is a ubiquitous metal oxide in sub-environments. The adsorption of Cd(II) on Mn oxide as function of adsorption time, pH, ionic strength, temperature, and initial Cd(II) concentration was investigated by batch techniques. The adsorption kinetics showed that the adsorption of Cd(II) on Mn oxide can be satisfactorily simulated by …
Adsorption of cadmium and copper by modified kaolinites
The present study reveals that the uptake of cadmium and copper ions by modified clays is an ion exchange phenomenon. The possibility of metal ions getting entrapped in the pores also cannot be ruled out. 5. ConclusionThe modified amorphous derivative of kaolinite shows better adsorption of metal ions viz. Cd and Cu than the …
Adsorption of cadmium and lead from aqueous solution using modified
Adsorption kinetics can demonstrate the relationship between the amounts of metal ions adsorbent adsorbed onto biochar with time. The relationship can reveal the basic kinetics theory in the adsorption study of cadmium and lead from aqueous solution.
Adsorption Characteristics of Cd2+ Ions in Aqueous Solution on Modified
The adsorption kinetics and adsorption isothermal tests of Cd2+ ions in aqueous solution were carried out. The results showed that modified biochars attached more active sites and surface group, especially iron-manganese-modified biochar (FMBC1, FMBC2).
Simultaneous reduction in cadmium and arsenic accumulation in …
Our previous studies indicated that iron or iron‑manganese modified SEP could significantly improve the adsorption efficiency of Cd and As in an aqueous solution (unpublished data). Accordingly, it was hypothesized that the application of iron or iron‑manganese modified SEP in soil could reduce the Cd and As contents of rice …
Enhancing Cd(II) adsorption on rice straw biochar by …
Semantic Scholar extracted view of "Enhancing Cd(II) adsorption on rice straw biochar by modification of iron and manganese oxides." by Wenbin Tan et al.
Investigating the sorption behavior of cadmium from …
In this work, a KMnO4-modified-biochar-based composite material with manganese oxide produced at 600 °C was fabricated to investigate the sorption mechanism of Cd(II) and to comprehensively evaluate the effect of the modification on biochar properties. Cd(II) adsorption mechanisms were mainly controlled by interaction …
Removal of cadmium (II) from aqueous solutions by adsorption …
The maximum adsorption of cadmium (II) metal ions was observed at pH 6 for all the adsorbents viz; 99.5%, 99% and 85% for JOC, MCC, and SCB, respectively. Order of Cd(II) removal by various biosorbents was JOC>MCC>SCB.
Synergistic mechanism of iron manganese supported …
After treatment with iron-manganese-modified materials, ... In addition, the hydroxyl groups in the modified biochar enhanced the adsorption of As(V) through hydrogen bonding and electrostatic attraction. ... cadmium, and lead from soil by iron-modified magnetic biochar. Environ Pollut, 261 ...
Manganese-modified biochar for highly efficient sorption of cadmium
The cadmium adsorption capacity of biomass waste modified by manganese potassium ore increased by 50.94%, which could be well used for long-term stabilization and recycling of Cd.