scholarly journals Enhanced cadmium removal by growing Bacillus cereus RC-1 immobilized on different magnetic biochars through simultaneous adsorption and bioaccumulation

2021 ◽  
Author(s):  
Min Deng ◽  
Kai Li ◽  
Yu-Jian Yan ◽  
Fei Huang ◽  
Dan Peng
Keyword(s):  
Physical Adsorption ◽  
Chemical Precipitation ◽  
Chicken Manure ◽  
Intracellular Accumulation ◽  
Cadmium Removal ◽  
Magnetic Biochar ◽  
Biosorption Capacity ◽  
Simultaneous Adsorption ◽  
Biosorption Process ◽  
Metals Removal

Abstract Biosorption of cadmium by growing bacteria immobilized on the three magnetic biochars derived from rice straw (MRSB-pellet), sewage sludge (MSSB-pellet), and chicken manure (MCMB-pellet) was investigated, respectively. Total biosorption capacity of the pellets was tested under varying range of pH, culture time, and initial Cd 2+ concentration. The maximum biosorption capacity of 93.02 mg/g was obtained with MRSB-pellet, followed by MSSB-pellet (68.02 mg/g) and MCMB-pellet (63.95 mg/g). The biosorption by these immobilized bacterial pellets was more effective than free bacteria, this enhancement could be the result of simultaneous adsorption and bioaccumulation, mainly resulting from magnetic biochar carrier and active bacteria, respectively. The biosorption process by immobilized pellets was primarily driven by ion-exchange and complexation, which jointly contributed of 73.56% (MRSB-pellet) to 78.62% (MSSB-pellet) the total adsorption, while the mechanisms of chemical precipitation and physical adsorption could averagely contribute 6.91% (MSSB-pellet) and 11.24% (MRSB-pellet), respectively. Intracellular accumulation was comparably tiny among these mechanisms accounting for 4.30-5.92% of total biosorption, in turn, it would maintain intracellular Cd 2+ concentration below a toxic threshold to promote cell growth. These suggested that magnetic biochar immobilized bacteria, particularly MRSB-pellet could be used as an effective biosorbent to remove the Cd 2+ from the growth medium. This study further deepened our understanding of biosorption process by microorganism immobilized onto magnetic biochar for the metals removal.

Comparative Study of Removal of Cadmium (II) and Chromium (III) Ions from Aqueous Solution Using Low-Cost Biosorbent

2014 ◽  
Vol 12 (1) ◽  
pp. 477-486 ◽  
Author(s):  
Abbas H. Sulaymon ◽  
Ahmed A. Mohammed ◽  
Tariq J. Al-Musawi
Keyword(s):  
Ph Value ◽  
Removal Rate ◽  
Low Cost ◽  
Order Kinetic ◽  
Cadmium Removal ◽  
Biosorption Capacity ◽  
Biosorption Process ◽  
Order Kinetic Model ◽  
Pseudo Second Order ◽  
Batch Biosorption

Abstract This study aims to evaluate the ability of abundant low-cost garden grass to remove cadmium and chromium ions from aqueous solutions. Batch biosorption studies were carried out to examine the biosorption capacity, pH value, temperature, agitation speed, and metal ions concentration. The biosorption process revealed that the garden grass was an effective biosorbent of cadmium and chromium. The maximum chromium and cadmium removal rate was 90 and 80% at pH 4, respectively. FTIR spectroscopy analysis showed that the hydroxyl, amine, and carboxyl groups were the major groups responsible for the biosorption process. The maximum biosorption capacity was 18.19 and 19.4 mg/g for cadmium and chromium, respectively. The biosorption isotherm data fitted well the Langmuir model. Kinetic data were adequately fitted by the pseudo-second-order kinetic model.

scholarly journals Biosorption of Methylene Blue Dye Using Natural Biosorbents Made from Weeds

Materials ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2486 ◽  
Author(s):  
Francisco Silva ◽  
Lorena Nascimento ◽  
Matheus Brito ◽  
Kleber da Silva ◽  
Waldomiro Paschoal ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Adsorption Mechanism ◽  
Physical Adsorption ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Weed Species ◽  
Biosorption Capacity ◽  
Biosorption Process ◽  
Pseudo Second Order ◽  
Time Required

The purpose of this work is to make use of vegetables that, although widely found in nature, there are few applications. The weeds used here, Cyanthilium cinereum (L.) H. Rob (CCLHR) and Paspalum maritimum (PMT) found in the Amazon region of Belém state of Pará-Brazil, contribute to the problem of water contamination by the removal of the methylene blue dye through the biosorption process, taking advantage of other materials for economic viability and processing. The influences of parameters such as, biosorbent dose, contact time, and initial concentration of dye were examined. The characterizations were realized using SEM to verify the morphology of the material and spectroscopy in the FTIR region. As for the adsorption mechanism, the physical adsorption mechanism prevailed. The time required for the system to reach equilibrium for both biosorbents was from 50 min, following a kinetics described by the pseudo-second order model. The adsorption isotherm data for PMT were better adjusted to the Langmuir model and the biosorption capacity ( q m a x ) value was (56.1798 mg/g). CCLHR was better adjusted to the Freundlich model and its maximum biosorption capacity was 76.3359 mg/g. Thus, these weed species are promising for the biosorption of methylene blue dye in effluents.

Pemanfaatan Cangkang Pensi (Corbicula Moltkiana) sebagai Bahan Penyerap Zat Warna Rhodamin B Dalam Larutan

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Rahmiana Zein ◽  
Mutia Khuratul Aini ◽  
Hermansyah Aziz
Keyword(s):  
Rhodamine B ◽  
Sem Analysis ◽  
Spectra Analysis ◽  
Biosorption Capacity ◽  
Biosorption Process ◽  
Langmuir Isotherm Model ◽  
Ft Ir ◽  
Cationic Exchange ◽  
Rhodamin B ◽  
Model Isotherm

Biosorpsi zat warna Rhodamine B menggunakan cangkang Pensi (Corbicula moltkiana) telah dikaji. Percobaan dilakukan dengan system batch guna memperoleh kondisi optimum biosorspi zat warna. Kapasitas biosorpsi zat warna pada pH 2 adalah 0.9958 mg/g, dengan konsentrasi larutan mula-mula 150 mg/L waktu kontak 105 menit, massa biosorben 0.1 g, ukuran partikel 32 µm dan temperature pengeringan biosorben pada 75oC. Model isotherm Langmuir menunjukkan bahwa proses penyerapan berlangsung secara kimia dan biosorpsi homogeny dari adsorbat (Rhodamine B) pada permukaan biosorben membentuk lapisan tunggal dengan nilai R2 0.9966. Analisis XRF menunjukkan bahwa penurunan kadar unsur logam pada cangkang Pensi membuktikan bahwa proses biosorpsi berlangsung dengan pertukaran kation. Hasil analisis spektrum FT-IR membuktikan adanya interaksi antaramolekul Rhodamin B dengan gugus fungsi pada cangkang Pensi. Analisis dengan SEM memperlihatkan bahwa pori-pori cangkang Pensi telah terisi penuh oleh molekul Rhodamin B. Kondisi optimum biosorpsi telah diaplikasikan pada limbah kerupuk merah dengan kapasitas penyerapan sebesar 0,2835 mg/g.   The biosorption of Rhodamine B dyes by Pensi (Corbicula moltkiana) shell has been investigated. The experiment was conducted in batch sistem in order to obtain the optimum conditions of dye biosorption. Biosorption capacity of dye was 0.9958 mg/g at pH 2, initial concentration 150 mg/L, contact time 105 minutes, biosorbent mass 0.1 gram, particle size 32 µ m and biosorbent drying temperature was at 75oC. The Langmuir Isotherm model showed chemisorption and homogeneous biosorption process of adsorbates onto the biosorbent surface formed monolayer dye molecules on the biosorbent surface with R2 value was 0.9966. XRF analysis showed that reduction of metals unsure quantity of pensi shell indicated biosorption process was occupied through cationic exchange. The result of FTIR spectra analysis indicated an interaction between Rhodamin B molecules and functional group of pensi shell. SEM analysis showed that the pensi shell pores were completely filled by Rhodamine B molecules. The optimum condition of biosorption has been aplicated in red chips wastewater industry with biosorption capacity was 0.2835 mg/g.

scholarly journals From Waste to Biosorbent: Removal of Congo Red from Water by Waste Wood Biomass

Water ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 279 ◽  
Author(s):  
Marija Stjepanović ◽  
Natalija Velić ◽  
Antonela Galić ◽  
Indira Kosović ◽  
Tamara Jakovljević ◽  
...  
Keyword(s):  
Removal Efficiency ◽  
Congo Red ◽  
Contact Time ◽  
Synthetic Wastewater ◽  
Wood Biomass ◽  
Waste Wood ◽  
Biosorption Capacity ◽  
Biosorption Process ◽  
Cr Concentration ◽  
Cr Removal

The aim of the study was to screen the waste wood biomass of 10 wood species as biosorbents for synthetic dye Congo Red (CR) removal from water and to single out the most efficient species for further batch biosorption experiments. Euroamerican poplar (EP), the most efficient species achieving 71.8% CR removal and biosorption capacity of 3.3 mg g−1, was characterized by field emission scanning electron microscopy (FE-SEM) and Fourier transform infrared spectroscopy (FTIR). Different factors affecting the biosorption process were investigated: initial biosorbent concentration (1–10 g dm−3), contact time (5–360 min), initial CR concentration (10–100 mg dm−3), and the initial pH (pH = 4–9). The results showed that CR removal efficiency increased with the increase of biosorbent concentration and contact time. Increase of initial CR concentration led to an increase of the biosorption capacity, but also a decrease of CR removal efficiency. The highest CR removal efficiency was achieved at pH = 4, while at pH = 9 a significant decrease was noticed. The percentage of CR removal from synthetic wastewater was 18.6% higher than from model CR solution. The Langmuir model fitted well the biosorption data, with the maximum biosorption capacity of 8 mg g−1. The kinetics data were found to conform to the pseudo-second-order kinetics model.

scholarly journals BIOSORPTION OF METHYLENE BLUE BY WASTE APRICOT SHELLS FROM FOOD INDUSTRY

2018 ◽  
Vol 4 (7) ◽  
Author(s):  
Tatjana Šoštarić ◽  
Marija Petrović ◽  
Jelena Milojković ◽  
Jelena Petrović ◽  
Marija Stanojević ◽  
...  
Keyword(s):  
Experimental Data ◽  
Aqueous Solution ◽  
Methylene Blue ◽  
Food Industry ◽  
Fruit Juice ◽  
Waste Waters ◽  
Batch Experiments ◽  
Biosorption Capacity ◽  
Biosorption Process ◽  
Monolayer Adsorption

In this paper, the removal of methylene blue (MB) from aqueous solution by biosorption ontoapricot shellshas been investigated through batch experiments. Apricot shells were chosen as alocally available and abundant waste from fruit juice industry. Methylene blue is common pollutantof waste waters from textile industry.The influence of initial MB concentration on biosorption process has been studied. Theexperimental data have been analysed using Langmuir and Freundlichisotherm models. TheLangmuir model better fits to experimental data, which explain monolayer adsorption. Maximumbiosorption capacity is 24,31 mg/g. A comparison of the biosorption capacity of waste apricot shellswith biosorption capacities of similar adsorbents previously investigated indicates that apricotshells could be a promising biosorbent for removal of MB from aqueous solution.

scholarly journals STUDI KARAKTERISTIK BIOPOLIMER GRACILARIA VERRUCOSA SEBAGAI BAHAN PENJERAP

2012 ◽  
Vol 10 (2) ◽  
pp. 85
Author(s):  
Dessy Ariyanti ◽  
Intan Nurcahyani
Keyword(s):  
Heavy Metals ◽  
Trace Elements ◽  
Industrial Wastewater ◽  
Langmuir Equation ◽  
Gracilaria Verrucosa ◽  
Adsorption Ability ◽  
Biosorption Capacity ◽  
Biosorption Process ◽  
Alternative Material ◽  
Equilibrium Data

ABSTRAK Keberadaan logam berat Cu dalam limbah industri dapat berakibat buruk bagi lingkungan. Gracilaria verrucosa ditujukan sebagai bahan alternatif yang ramah lingkungan pengganti polimer sintetis untuk proses biosorpsi logam berat Cu. Pada penelitian ini dipelajari karakteristik kemampuan penjerapan dari biopolimer Gracilaria verrucosa terhadap logam berat Cu. Pada proses biosorpsi Cu2+ kapasitas biosorpsi maksimum sekitar 38.34 mg/gr. Kapasitas biosorpsi dicapai pada t=15 menit dan pH larutan= 4. Data kesetimbangan proses biosorpsi ini dapat dimodelkan dengan persamaan Langmuir. Keberadaan NH4+ dalam larutan tidak terlalu berpengaruh terhadap proses biosorpsi logam berat Cu. Hasil penelitian disimpulkan bahwa biopolimer Gracilaria verrucosa memiliki potensi sebagai bahan alternatif dalam proses pemisahan trace element dengan kapasitas biosorpsi yang tinggi. Kata kunci : Gracilaria verrucosa, alga merah, biosorpsi  logam berat ABSTRACT The presence of heavy metals such as Cu in industrial wastewater can lead to the environment contamination. The algae Gracilaria verrucosa is intended to be the environmentally friendly polymer used in biosorption process of heavy metals Cu. In this research, the characteristics and adsorption ability of biopolymers Gracilaria verrucosa against heavy metals Cu was studied respectively. Results shown that the maximum biosorption capacity of Gracilaria verrucosa in adsorbing Cu2+ was 38.34 mg/gr at t = 15 min and pH = 4. Equilibrium data of biosorption process can be modeled by Langmuir equation. The presence of NH4 + in solution does not significantly affected the biosorption process of heavy metals Cu. It can be concluded that biopolymer Gracilaria verrucosa has potential as an alternative material with high biosorption capacity in removing trace elements. Keywords: Gracilaria verrucosa, red algae, heavy metals biosorption

Cadmium removal potential by rice straw-derived magnetic biochar

2016 ◽  
Vol 19 (3) ◽  
pp. 761-774 ◽  
Author(s):  
Zhongxin Tan ◽  
Yuanhang Wang ◽  
Alfreda Kasiulienė ◽  
Chuanqin Huang ◽  
Ping Ai
Keyword(s):  
Rice Straw ◽  
Cadmium Removal ◽  
Magnetic Biochar

scholarly journals Biosorption of Cr(VI) from AqueousSolution Using New Adsorbent: Equilibrium and Thermodynamic Study

2010 ◽  
Vol 7 (s1) ◽  
pp. S488-S494 ◽  
Author(s):  
Israa G. Zainal
Keyword(s):  
Physical Adsorption ◽  
Thermodynamic Study ◽  
Polluted Water ◽  
Isotherm Models ◽  
Biosorption Process ◽  
Naturally Occurring ◽  
Adsorption Isotherm Models ◽  
Optimum Ph ◽  
Solid Liquid Interface ◽  
Solid Liquid

Biosorption is one such emerging technology which utilized naturally occurring waste materials to sequester heavy metals from polluted water. In the present study cinnamon was utilized for Cr(VI) removal from aqueous solutions.It was found that a time of two hours was sufficient for sorption to attain equilibrium. The optimum pH was 2 for Cr(VI) removal. Temprature has little influence on the biosorption process. The Cr(VI) removal decreased with increase in temperature. The biosorption data was well fitted to Dubinin - Radushkevich (D-R), Freundlich and Tempkin adsorption isotherm models, although the correlation coefficient of Langmuir model was high but the calculated adsorption capacity did not agree with the experimental. The thermodynamic study reveals that the biosorption process is spontaneous and the spontaneity decreased with temperature increase and the process is exothermic accompanied by highly ordered adsorbate at the solid liquid interface. ΔH°values were negative and lie in the range of physical adsorption.

scholarly journals Thermodynamic and Kinetic Aspects on the Biosorption of Cadmium by Low Cost Materials: A Review

2006 ◽  
Vol 3 (6) ◽  
pp. 400 ◽  
Author(s):  
Pablo Lodeiro ◽  
Roberto Herrero ◽  
Manuel E. Sastre de Vicente
Keyword(s):  
Low Cost ◽  
Kinetic Studies ◽  
Chemical Precipitation ◽  
Point Of View ◽  
Biological Origin ◽  
Biosorption Process ◽  
Low Concentrations ◽  
Passive Adsorption ◽  
High Concentrations

Environmental Context. The toxicity of cadmium in waters can be decreased by using a wide variety of low-cost biomaterials. A number of such investigations are reviewed here and the models used to describe the process of biosorption discussed. Fundamental investigations that probe the thermodynamics and kinetics of the biosorption process are essential for a strong understanding of all biosorption processes. Areas that still need addressing are highlighted, in particular with regard to cadmium biosorption, some models for which are ready to be tested in pilot plants. Abstract. Cadmium is internationally recognized as an important pollutant in the environment, and different methods for its removal from wastewaters (chemical precipitation being the most commonly used) have been reported in the literature. Those methods are in most cases oriented to situations with high concentrations of the pollutant. Thus, alternative removal and recovery methods are being considered for removing very low concentrations of cadmium. These methods are all based on biosorption, the passive adsorption and sequestration of metals by several natural materials of biological origin. In this review we have considered the biosorption of cadmium onto biomaterials from a physicochemical, thermodynamic, and kinetic perspective. The thermodynamic perspective is based on the characterization of the interactions of the binding sites of the biosorbents with cadmium species in aqueous solution. Traditionally, this approach has been quantified using different kinds of isotherms. In addition, the description is completed by taking into account electrostatic effects, and the influence of pH and ionic strength, which are associated with the negative charge developed, in most cases, by the biomaterial. The other point of view in this review is the kinetic one, which is necessary for a full physicochemical description of the sorbate–biosorbent system. Consequently, an updated description of the various approaches commonly employed in kinetic studies in biosorption has been carried out.

scholarly journals Freshwater green macroalgae as a biosorbent of Cr(III) ions

2018 ◽  
Vol 16 (1) ◽  
pp. 689-701 ◽  
Author(s):  
Katarzyna Godlewska ◽  
Krzysztof Marycz ◽  
Izabela Michalak
Keyword(s):  
Feed Additive ◽  
Cladophora Glomerata ◽  
Order Model ◽  
Green Macroalgae ◽  
Biosorption Capacity ◽  
Biosorption Process ◽  
Column System ◽  
Batch System ◽  
Pseudo Second Order ◽  
Animal Feeding

AbstractThe research was conducted to evaluate the possibility of using algae enriched with Cr(III) ions as a feed additive for horses. As a sorbent, macroalgaCladophora glomeratawas chosen. The results of the kinetic and equilibrium experiments on biosorption of Cr(III) ions are presented. The pseudo-second order model was used for the description of kinetics. Equilibrium of biosorption process was described by Langmuir model. The effect of biosorbent dose: 0.1–1.0 g·L-1, initial metal ions concentration: 100–300 mg·L-1and pH: 3–5 on the biosorption capacity in a batch system was evaluated. These factors played a significant role in affecting the biosorption capacity of biosorbent and the rate constant. Optimal pH for biosorption was 5, biosorbent dose 0.1 g·L-1, initial concentration of Cr(III) ions 300 mg·L-1. The maximum biosorption capacity determined from Langmuir equation was 107.5 mg·g-1(forCS1.0 g·L-1, pH 5). The experiments were also performed in a column system and they showed that almost 100% of Cr(III) ions were absorbed after 200 minutes. The FTIR and SEM-EDX technique confirmed binding of Cr(III) ions by the algal biomass. Due to very good biosorption properties,Cladophora glomeratacan be considered as a carrier of microelement ions in animal feeding.

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