Removal of heavy metals from wastewater using modified agricultural adsorbents

Renu, Madhu Agarwal; Singh, Kanhaiya; Upadhyaya, Sushant; Dohare, Rajeev Kumar

doi:10.1016/j.matpr.2017.06.415

Cited by 79 publications

(35 citation statements)

References 8 publications

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“…Gra copolymerization of the biopolymers, composites with inorganic/organic hybrid materials and direct functionalization of the polymeric backbone have been used for syntheses of different adsorbent material. [19][20][21][22][23][24][25][26] The important aspect for the adsorption application are: selectivity, capacity, regeneration ability, kinetics, thermodynamics, and the cost efficiency. The use of biopolymers as adsorbents is common, but the increase in surface area, mechanical properties, and decrease in the swelling is still a challenge.…”

Section: Introductionmentioning

confidence: 99%

Removal of Pb(ii) and Cd(ii) from wastewater using arginine cross-linked chitosan–carboxymethyl cellulose beads as green adsorbent

et al. 2019

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Section: Introductionmentioning

confidence: 99%

Removal of Pb(ii) and Cd(ii) from wastewater using arginine cross-linked chitosan–carboxymethyl cellulose beads as green adsorbent

et al. 2019

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“…While, chemical treatment is by washing raw adsorbent materials with detergents and treated with organic or inorganic solutions such as acid, caustic, methanol, formaldehyde, etc. Chemical treatment will remove the surface impurities and develop the reactive functional groups on the surface such as carbonyl (ketone), phenolic, acetamido, alcoholic, amino, sulfhydryl group, etc ( Renu et al., 2017 ; Afroze and Sen, 2018 ). These functional groups are able to bind to metal ions by substituting hydrogen ions with metal ions in solution or by donating electron pairs to form complexes between functional groups and metal ions.…”

Section: Development Of Agricultural Waste As Low-cost Adsorbentsmentioning

confidence: 99%

Evolution of adsorption process for manganese removal in water via agricultural waste adsorbents

Rudi

Muhamad

Chuan

et al. 2020

Heliyon

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Manganese has recently been a topic of interest among researchers, particularly when 1,752 million tonnes of manganese are expected to be produced by the steel industry in 2020. Manganese discharges from industrial effluents have increased manganese contamination in water sources. Its concentrations of more than 0.2 mg/L in the water sources could have negative impacts on human health and the aquatic ecosystem. Thereby, the available water treatment processes face challenges in effectively removing manganese at low cost. In response to these challenges, adsorption has emerged as one of the most practical water treatment processes for manganese removal. In particular, agricultural waste adsorbents received a lot of attention owing to their low cost and high efficiency (99%) in the removal of manganese. Therefore, this paper reviews the removal of manganese by adsorption process using agricultural waste adsorbents. The factors affecting the adsorption process, the mechanisms, and the performances of the adsorbents are elucidated in detail.

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“…Adsorption process is widely used due to its effectiveness giving satisfactory results and also in terms of cost, simplicity of design, and operations [12,13]. Many research studies have focused on the low-cost adsorbent in the removal of wastewater pollutant such as heavy metal by carbonized green mussel shell [14], modified agriculture wastes [15], aerogel adsorbent from combination of waste office paper and chitosan [16], and many more. Meanwhile, low-cost adsorbent application in fluoride removal has been studied by Singh et al [17] who used sugarcane bagasse as an adsorbent, Ayu Haslija et al [18] used modified palm kernel shell in batch process adsorption, Mukherjee et al [19] synthesized zeolite adsorbent from rice husk, and Hu et al [20] used chitosan/ aluminum hydroxide bead adsorbent, and many more.…”

Section: Introductionmentioning

confidence: 99%

Column Efficiency of Fluoride Removal Using Quaternized Palm Kernel Shell (QPKS)

Bakar

Abdullah

Zahri

et al. 2019

International Journal of Chemical Engineering

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In this research, the adsorption potential of quaternized palm kernel shell (QPKS) to remove F− from aqueous solution was investigated using fixed-bed adsorption column. Raw palm kernel shell waste was reacted with 3-chloro-2-hydroxypropyl trimethylammonium chloride (CHMAC) in order to modify the surface charge. The effects of inlet F− concentrations (2–12 mg/l) and QPKS bed height (2–10 cm) with optimum pH (pH = 3) on the breakthrough characteristics of the adsorption system were determined. In the fixed-bed column, breakthrough time increases with increasing bed height due to increasing amount of active site on adsorbents to adsorb the fluoride ion. Decreasing trend of breakthrough values was obtained with increasing initial fluoride concentration due to greater driving force for the transfer process to overcome the mass transfer resistance in the column. The adsorptions were fitted to three well-established fixed-bed adsorption models, namely, Thomas, Yoon–Nelson, and Adams–Bohart models. The results fitted well to the Thomas and Yoon–Nelson models with correlation coefficient, R2 ≥ 0.96.

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Removal of heavy metals from wastewater using modified agricultural adsorbents

Cited by 79 publications

References 8 publications

Removal of Pb(ii) and Cd(ii) from wastewater using arginine cross-linked chitosan–carboxymethyl cellulose beads as green adsorbent

Removal of Pb(ii) and Cd(ii) from wastewater using arginine cross-linked chitosan–carboxymethyl cellulose beads as green adsorbent

Evolution of adsorption process for manganese removal in water via agricultural waste adsorbents

Column Efficiency of Fluoride Removal Using Quaternized Palm Kernel Shell (QPKS)

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