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Zhou Y, Wang X, Yang Y, Jiang L, Wang X, Tang Y, Xiao L. Enhanced copper removal by magnesium modified biochar derived from Alternanthera philoxeroides. ENVIRONMENTAL RESEARCH 2024; 251:118652. [PMID: 38508361 DOI: 10.1016/j.envres.2024.118652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 02/12/2024] [Accepted: 03/05/2024] [Indexed: 03/22/2024]
Abstract
Adsorption processes are being widely used by various researchers for the removal of heavy metals from waste streams and biochar has been frequently used as an adsorbent. In this study, a MgO-loaded biochar derived from Alternanthera philoxeroides (MAPB) was synthesized for the removal of Cu(II). Compared with other biochar absorbents, MAPB showed a relatively slow adsorption kinetics, but an effective removal of Cu(II) with a maximum sorption capacity of 1, 238 mg/g. The adsorption mechanism of Cu(II) by MAPB was mainly controlled by chemical precipitation as Cu2(OH)3NO3, complexation and ion replacement. Fixed bed column with MAPB packed in same dosage (1, 000 mg) and different bed depth (1.3, 2.6 and 3.9 cm) showed that the increased of bed depth by mixing MAPB with quartz sand could increase the removal of Cu(II). The fitted breakthrough (BT) models showed that mixing MAPB with support media could reduce the mass transfer rate, increase the dynamic adsorption capacity and BT time. Therefore, MAPB adsorbent act as a highly efficient long-term adsorbent for Cu(II) contaminated water treatment may have great ecological and environmental significance.
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Affiliation(s)
- Yingping Zhou
- School of the Environment, State Key Laboratory for Pollution Control and Resource Reuse, Nanjing University Xianlin Campus, Nanjing, 210023, China
| | - Xiaoyu Wang
- School of the Environment, State Key Laboratory for Pollution Control and Resource Reuse, Nanjing University Xianlin Campus, Nanjing, 210023, China
| | - Yu Yang
- School of the Environment, State Key Laboratory for Pollution Control and Resource Reuse, Nanjing University Xianlin Campus, Nanjing, 210023, China
| | - Lijuan Jiang
- School of the Environment, State Key Laboratory for Pollution Control and Resource Reuse, Nanjing University Xianlin Campus, Nanjing, 210023, China
| | - Xiaolin Wang
- School of the Environment, State Key Laboratory for Pollution Control and Resource Reuse, Nanjing University Xianlin Campus, Nanjing, 210023, China
| | - Yuqiong Tang
- School of the Environment, State Key Laboratory for Pollution Control and Resource Reuse, Nanjing University Xianlin Campus, Nanjing, 210023, China
| | - Lin Xiao
- School of the Environment, State Key Laboratory for Pollution Control and Resource Reuse, Nanjing University Xianlin Campus, Nanjing, 210023, China.
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Inyinbor AA, Bankole DT, Oluyori AP. Blighia sapida Waste Biochar in Batch and Fixed-Bed Adsorption of Chloroquine Phosphate: Efficacy Validation Using Artificial Neural Networks. ACS OMEGA 2024; 9:12564-12574. [PMID: 38524418 PMCID: PMC10955583 DOI: 10.1021/acsomega.3c05008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 11/29/2023] [Accepted: 12/13/2023] [Indexed: 03/26/2024]
Abstract
The present study investigated the potency of biochar prepared from Blighia sapida seedpods (BSSPs) in the uptake of chloroquine phosphate (CQP) from single-component batch and multicomponent fixed-bed adsorption systems. BSSPs presented a highly porous structure with a BET surface area of 1122.05 m2/g, to which adsorption efficiency correlated. The Dubinin-Radushkevich isotherm energy was obtained as 129.09 kJ/mol, confirming the chemisorption nature of the BSSP-CQP adsorption system. The efficiency of the artificial neural network (ANN) was evaluated using the lowest mean square error (MSE = 7.27) and highest correlation coefficient (R2 = 0.9910). A good agreement between the experimental results and the ANN-predicted data indicated the efficiency of the model. The percentage removal of 95.78% obtained for the column adsorption studies indicated the effectiveness of BSSPs in a multicomponent system. The mechanism of the interaction proceeded via hydrogen bonding and electrostatic attraction. This was confirmed by the high desorption efficiency (69.11%) with a HCl eluent. The degree of reversibility was found to be 2.95, indicating the reusability potential of BSSPs. BSSPs are therefore considered multilayered adsorbents with potential applications in pharmaceutical wastewater treatment.
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Affiliation(s)
- Adejumoke Abosede Inyinbor
- Department
of Physical Sciences, Landmark University, P.M.B 1001, Omu Aran 251101, Nigeria
- Clean
water and Sanitation Sustainable Development Goal, Landmark University, P.M.B 1001, Omu Aran 251101, Nigeria
| | - Deborah Temitope Bankole
- Department
of Physical Sciences, Landmark University, P.M.B 1001, Omu Aran 251101, Nigeria
- Clean
water and Sanitation Sustainable Development Goal, Landmark University, P.M.B 1001, Omu Aran 251101, Nigeria
| | - Abimbola Peter Oluyori
- Department
of Physical Sciences, Landmark University, P.M.B 1001, Omu Aran 251101, Nigeria
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Duan Q, Yang T, Chen J, Liu J, Gao L, Zhang J, Lin S. Ba-modified peanut shell biochar (PSB): preparation and adsorption of Pb(II) from water. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2023; 88:1795-1820. [PMID: 37830997 PMCID: wst_2023_305 DOI: 10.2166/wst.2023.305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
The impact of Ba-modified peanut shell biochar (Ba-PSB) on Pb(II) removal was studied and BaCl2 was used as a modifier. It was shown that the PSB obtained at 750 °C had the best adsorption effect, and the Ba-PSB had a larger specific surface area and a good adsorption effect on Pb(II). At pH = 5, concentration was 400 mg/L, time was 14 h, and temperature was 55 °C, the loading amount of black peanut shell biochar (BPSB), red peanut shell biochar (RPSB), Ba-BPSB, and Ba-RPSB reached 128.050, 98.217, 379.330, and 364.910 mg/g, respectively. In addition, based on the non-linear fitting, it was found that the quasi-second-order kinetic model, and isothermal model could be applied to describe Pb(II) adsorption on PSB and Ba-PSB. The adsorption behavior of PSB unmodified and modified was a spontaneous process. Moreover, chemical modification of BPSB, RPSB, Ba-BPSB, and Ba-RPSB for hindering of -COOH and -OH groups revealed 81.81, 77.08, 86.90, and 83.65% removal of Pb(II), respectively, which was due to the participation of -COOH, while 17.61, 21.70, 12.77, and 15.06% was from -OH group, respectively. The increase of cation strength (Na+, K+, Ca2+, and Mg2+) will reduce the adsorption capacity of PSB for Pb(II).
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Affiliation(s)
- Qianqian Duan
- School of Energy, Materials and Chemical Engineering, Hefei University, 99 Jinxiudadao, Hefei 230601, China E-mail:
| | - Tianrui Yang
- School of Energy, Materials and Chemical Engineering, Hefei University, 99 Jinxiudadao, Hefei 230601, China
| | - Jingyi Chen
- School of Energy, Materials and Chemical Engineering, Hefei University, 99 Jinxiudadao, Hefei 230601, China
| | - Junsheng Liu
- School of Energy, Materials and Chemical Engineering, Hefei University, 99 Jinxiudadao, Hefei 230601, China
| | - Liping Gao
- School of Energy, Materials and Chemical Engineering, Hefei University, 99 Jinxiudadao, Hefei 230601, China
| | - Junfei Zhang
- School of Energy, Materials and Chemical Engineering, Hefei University, 99 Jinxiudadao, Hefei 230601, China
| | - Shitao Lin
- School of Energy, Materials and Chemical Engineering, Hefei University, 99 Jinxiudadao, Hefei 230601, China
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Mohan C, Annachhatre A. Role of pine needle biochar in operation and stability of anaerobic processes. Biodegradation 2023; 34:53-71. [PMID: 36399191 DOI: 10.1007/s10532-022-10004-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 11/01/2022] [Indexed: 11/19/2022]
Abstract
Utility of biochar addition in anaerobic processes for promoting direct interspecies electron transfer (DIET) is demonstrated in this research. Biochar produced from pyrolysis of pine needle forest residue was used as conductive material for DIET. Three CSTRs were operated in parallel with and without biochar addition in fed-batch mode. Reactor without biochar which represented indirect interspecies electron transfer (IIET) exhibited wide variation in pH and VFA and took longer period during startup. All the rectors were operated at steady state with an OLR ranging from 0.5 to 1.75 kg-COD/m3.d. As OLR increased, performance of reactor without biochar resulted in rapid pH drop and increase in VFA, leading to its eventual failure at OLR of 1.75 kg-COD/m3.d. As against to this, performance of reactors with biochar remained robust and relatively unaffected at higher OLR values. Daily VFA accumulation from fed-batch mode always remained highest in reactor without biochar.
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Affiliation(s)
- Chander Mohan
- Indian Institute of Technology, Mandi, Himachal Pradesh, 175005, India
| | - Ajit Annachhatre
- Indian Institute of Technology, Mandi, Himachal Pradesh, 175005, India.
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Mohan C, Annachhatre A. Facilitation of interspecies electron transfer in anaerobic processes through pine needle biochar. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2022; 86:2197-2212. [PMID: 36378175 DOI: 10.2166/wst.2022.316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Role of biochar in promoting methanogenesis during anaerobic processes was investigated in this research. Biochar produced from Himalayan pine needles was used as medium for conductive material mediated interspecies electron transfer (CM-IET) amongst the electron producing microorganisms and electron consuming methanogenic archaea. Three anaerobic continuous stirrer tank reactors (CSTRs) with 0, 5 and 10 g/L pine needle biochar (PNB) were operated at steady state organic loading rate (OLR) of 2.0-2.5 kgCOD/(m3.d). R0 (0 g/L PNB), representing indirect interspecies electron transfer (IIET), failed at an OLR of 2.0 kgCOD/(m3.d) due to the highest volatile fatty acid (VFA) concentration of 6,300 mg/L among the three CSTRs. On the other hand, at an OLR of 2.5 kgCOD/(m3.d), R2 (10 g/L PNB) showed the most superior performance with chemical oxygen demand (COD) removal of 55% and volatile fatty acid (VFA) concentration of 3,500 mg/L, while R1 (5 g/L PNB) recorded COD removal of 45% and VFA concentration of 4,400 mg/L. In comparison, fixed biofilm reactor (FBR) with 80 g/L of PNB as support material operated satisfactorily at OLR of 13.8 kgCOD/(m3.d) with 70% COD removal and VFA concentration of 1,400 mg/L. These investigations confirmed the beneficial role of biochar in anaerobic processes by promoting CM-IET amongst VFA degrading bacteria and methane producing archaea.
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Affiliation(s)
- Chander Mohan
- Indian Institute of Technology, Mandi, Himachal Pradesh 175005, India E-mail:
| | - Ajit Annachhatre
- Indian Institute of Technology, Mandi, Himachal Pradesh 175005, India E-mail:
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