Adsorption characteristics of arsenic and phosphate onto iron impregnated biochar derived from anaerobic granular sludge

Lee, Myeong Eun; Jeon, Pilyong; Kim, Jong-Gook; Baek, Kitae

doi:10.1007/s11814-018-0057-1

Cited by 38 publications

(12 citation statements)

References 36 publications

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“…Electrostatic interactions and metal precipitation were the primary mechanisms attributing to the removal of As(V) and Cr(VI). In another interesting study, iron impregnated biochar prepared from granular sludge could efficiently remove 6.1 mg g À 1 As(III), 11.5 mg g À 1 As(V), and 10.37 mg g À 1 PO 4 3À as opposed to zero removal of these pollutants when using granular or activated sludge from the same plant alone as these lacked the functional groups required for the adsorption 143 .The magnetitemodified water hyacinth biochar with a larger surface had also shown two different mechanisms for arsenate removal. [144] Zhang et al [144] observed a positive correlation between the Fe 2 + /Fe 3 + on the surface of biochar and As species that can form an inner-sphere surface complex and resulted in maximum adsorption of 7.41 mg g À 1 .…”

Section: Rice Huskmentioning

confidence: 99%

Metal‐Loaded Biochar for the Removal of Arsenic from Water: A Critical Review on Overall Effectiveness, Governing Mechanisms, and Influential Factors

et al. 2022

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Arsenic (As) contamination in water sources is a serious threat to safe drinking water afflicting many developed and developing nations. Among the different water treatment techniques, arsenic removal using metal‐loaded biochar has gained considerable interest as an efficient environmentally sustainable adsorbent. This review critically focuses on an in‐depth analysis of different adsorption mechanisms and various physicochemical properties such as pH, surface area and surface charge, porosity, and functional groups of the metal‐loaded biochar that are significant for As adsorption, which has not been previously described. It centers on addressing the overall effectiveness, governing mechanisms, and influential factors of metal‐loaded biochars for As removal from the aqueous medium. Special consideration on oxidation of arsenite to arsente and its removal was given. The oxidation processes are also effective in reducing arsenic toxicity by oxidation of arsenite to arsenate. A comprehensive insight into the utility of biochar for As removal for future field applications of biochar is delineated.

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Section: Rice Huskmentioning

confidence: 99%

Metal‐Loaded Biochar for the Removal of Arsenic from Water: A Critical Review on Overall Effectiveness, Governing Mechanisms, and Influential Factors

et al. 2022

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“…Ag/biochar component was fabricated as supercapacitor electrode [4]. In order to improve removal efficiency of contaminants, biochar needs to be pretreated by activation and functionalization processes before use [5][6][7][8]. Generally, biochar can be activated physically or chemically to improve the activity by adjusting the surface area and pore volume [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Applications of Modified Biochar-Based Materials for the Removal of Environment Pollutants: A Mini Review

Lee

Park

2020

Sustainability

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The biochar treated through several processes can be modified and utilized as catalyst or catalyst support due to specific properties with various available functional groups on the surface. The functional groups attached to the biochar surface can initiate active radical species to play an important role, which lead to the destruction of contaminants as a catalyst and the removal of adsorbent by involving electron transfer or redox processes. Centering on the high potential to be developed in field applications, this paper reviews more feasible and sustainable biochar-based materials resulting in efficient removals of environmental pollutants as catalyst or support rather than describing them according to the technology category. This review addresses biochar-based materials for utilization as catalysts, metal catalyst supports of iron/iron oxides, and titanium dioxide because the advanced oxidation process using iron/iron oxides or titanium dioxides is more effective for the removal of contaminants. Biochar-based materials can be used for the removal of inorganic contaminants such as heavy meals and nitrate or phosphate to cause eutrophication of water. The biochar-based materials available for the remediation of eutrophic water by the release of N- or P-containing compounds is also reviewed.

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“…Therefore, the main problems of sludge disposal are related to the need to find and develop more efficient, economical and sustainable technologies for sludge disposal [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…To quantitatively describe the kinetic behaviors of divalent metals and trivalent metals during the biosorption process, pseudo-first order and pseudo-second order adsorption kinetic equations were used to fit the batch kinetic data, following the expressions in Eqs. (2)-(4). Based on the equations for the different metals, we calculated the values of rate constant, initial sorption rate, and coefficients and are presented in…”

mentioning

confidence: 99%

Evaluation of metal removal performance of rod-type biosorbent prepared from sewage-sludge

Seo

Kim

Park

et al. 2019

Environmental Engineering Research

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The aim of this work was to evaluate the potential use of recycled sewage-sludge as a biosorbent for removing various metals from aqueous solution. To improve adsorption capacity and accomplish easy solid-liquid separation, the sludge was immobilized into the rod type with Ca-alginate. The removal performance was analyzed through kinetic and equilibrium studies. We conducted batch experiments examining the removal of cationic metals and anionic metals/metalloid by the rod-type biosorbent (cations: Cd(II), Cu(II), Cr(III), Fe(II), Ni(II), Pb(II), Zn(II), Mn(II), Al(III), As(III), and Fe(III); anions: As(V), Cr(VI) and Mn(VII)).The rod-type biosorbent, which was manufactured using sludge and alginate, showed higher adsorption capability for the removal of cationic metal than anionic metal. In evaluations of cation adsorption, divalent cations adsorbed more and faster than trivalent cations. The maximum uptake of Cd(II) was determined to be 67.29 mg/g, which was higher than those of other sludge adsorbents reported in the literature. In evaluations of anions, As(V), Cr(VI) and Mn(VII) were removed by different mechanisms. In this study, we simultaneously evaluated the adsorption performance of a new biosorbent for cationic and anionic metals. Our findings are expected to contribute to the commercialization of sludge-based biosorbents.

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Adsorption characteristics of arsenic and phosphate onto iron impregnated biochar derived from anaerobic granular sludge

Cited by 38 publications

References 36 publications

Metal‐Loaded Biochar for the Removal of Arsenic from Water: A Critical Review on Overall Effectiveness, Governing Mechanisms, and Influential Factors

Metal‐Loaded Biochar for the Removal of Arsenic from Water: A Critical Review on Overall Effectiveness, Governing Mechanisms, and Influential Factors

Applications of Modified Biochar-Based Materials for the Removal of Environment Pollutants: A Mini Review

Evaluation of metal removal performance of rod-type biosorbent prepared from sewage-sludge

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