Lead and cadmium removal from wastewater using eco-friendly biochar adsorbent derived from rice husk, wheat straw, and corncob

Amen, Rabia; Yaseen, Muhammad; Ahmad, Mahmood; Klemeš, Jiří Jaromír; Saqib, Sidra; Ullah, Sami; Al‐Sehemi, Abdullah G.; Rafiq, Sikander; Babar, Muhammad; Fatt, Chuah Lai; Ibrahim, Muhammad; Asif, Saira; Qureshi, Khurram Shehzad; Akbar, Majid Majeed; Bokhari, Awais

doi:10.1016/j.clet.2020.100006

Cited by 77 publications

(36 citation statements)

References 70 publications

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“…The XRD patterns show similar materials as expected and indicate a long-range amorphous material. There is a main broad peak in the low angle region (10º-35°) is indexed as (002) stacking of the graphitic basal plan in biochar [ 49 , 50 , 51 , 52 , 53 , 54 ]. It is also observed that the four biochars present a comparable and predominantly amorphous structure, with crystallite fringes assigned to the graphitic phase and that coincide with other works published in the literature [ 49 ].…”

Section: Resultsmentioning

confidence: 99%

Use of biochar from rice husk pyrolysis: assessment of reactivity in lime pastes

Morales

Herrera

López

et al. 2021

Heliyon

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Section: Resultsmentioning

confidence: 99%

Use of biochar from rice husk pyrolysis: assessment of reactivity in lime pastes

Morales

Herrera

López

et al. 2021

Heliyon

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“…Two parameters are considered to characterize biosorption dynamics: the diffusion coe cient ({D}_{ef}) and the adsorption rate constant ({k}_{a}). To determine their values, experimental obtained data according to procedure detailed in subchapter 2.2.4 and the dynamic model equations (5)(6)(7)(8)(9)(10)(11) were used.…”

Section: Identi Cation Of Parameters Characterizing Biosorption Dynamicsmentioning

confidence: 99%

“…So far, numerous technologies were investigated, from phytoremediation, occulation, and thermal treatment to biological or advanced membrane processes. Among them, adsorption process (AP) is one of the most feasible due to energy-e cient and cost-effective operation, especially when large volumes of dilute solutions must be treated 5,6 . Also, by using improved and/or environmentally friendly (bio)sorbents, AP allows advanced pollutants removal without generating dangerous by-products 7 .…”

Section: Introductionmentioning

confidence: 99%

Modelling of Lead and Cadmium Removal by Porous Biosorbent in Silent and Ultrasound-assisted Systems

Ahmed

Dobre

Kamar

et al. 2022

Preprint

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Present work aimed to analyse experimentally, statistically and using mathematical modelling the behaviour of single and competitive lead and cadmium batch adsorption. The process was conducted in silent, and ultrasound (US)-assisted systems, in aqueous environment, on grinded hazelnut shells (HS) as sustainable and cost-effective porous biosorbent. The dynamic study was based on experimentally obtained removal rates, modelled considering species diffusion with reversible kinetics of sorption inside solid particles. The influence of process factors (pH, adsorbent concentration, adsorbent particle size, and initial species concentration in liquid phase) on species removal efficiency was studied when process equilibrium was attained. The study, following a 24 factorial experimental design, allowed the development of a statistical model to predict variables influences. Based on the obtained results a deeper analysis of separation efficiency depending on process factors was conducted. Hence, the dynamics of removal efficiency was determined for several representative experiments. The equilibrium isotherms data, best fitted by an appropriate Langmuir model, were used in the dynamic model to reduce the number of model parameters which normally require experimental identification.

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“…Moreover, it is an available, eco-friendly, and renewable crude carbon material involved in synthesizing essential carbon products [Nadhirah et al, 2020], i.e., activated carbon (AC). Due to their surface properties, porosity, and high specific surface area, various types of biomass and its derived AC were tested and reported in the literature for several heavy metals removal from aqueous solutions: rice husk [Wong et al, 2003], wheat straw and corncob biochar [Amen et al, 2020], orange peel [Hasan et al, 2021] and its AC [Ali & Abdel-Satar, 2017], activated watermelon [Gupta & Gogate, 2016], olive solid waste [Chouchene et al, 2014], sugar beet pulp [Aksu & İşoğlu, 2005], tea [Wan et al, 2014], groundnut shell, yam and cassava peels AC [Thompson et al, 2020], date seed-derived biochar [Mahdi et al, 2018], sugarcane bagasse AC [Tao et al, 2015], and many other agro-waste.…”

Section: Introductionmentioning

confidence: 99%

Polyurethane Loaded with Vegetable Activated Carbon for Heavy Metals Removal from Water

Malti¹,

Hamieh²,

Noaman³

et al. 2021

J. Ecol. Eng.

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The heavy metals pollutants resulting from industrial wastewater are a major environmental problem due to their toxicity and non-biodegradability. Their removal became a trending environmental subject. The preparation of low-cost and eco-friendly adsorbents for industrial wastewater treatment has been widely investigated. Furthermore, the use of polymeric material for this purpose is highly increasing. In this study, banana stem agro-waste was valorized by preparing and characterizing its derived activated carbon used as a filler to improve the adsorption performance of polyurethane foams. The loaded polyurethane was synthesized in the shape of pellets, characterized by SEM, and tested in removing Pb 2 + and Cu 2 + from aqueous solutions. The effects of activated carbon filler concentration, number of filtering passes, and pH were examined. The loaded polyurethane demonstrated a good adsorption capacity that was enormously improved compared to the unloaded polymer. 77% Pb 2 + and 40% Cu 2 + removal were reached after one filtering pass only. The optimum pH was determined to be 4. After the 10th pass, and at any pH, almost 100% of the studied metals were eliminated. Rapid and straightforward selectivity and seawater deionization tests were carried out and confirmed the capacity performance of the prepared pellets in removing different aqueous ions.

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Lead and cadmium removal from wastewater using eco-friendly biochar adsorbent derived from rice husk, wheat straw, and corncob

Cited by 77 publications

References 70 publications

Use of biochar from rice husk pyrolysis: assessment of reactivity in lime pastes

Use of biochar from rice husk pyrolysis: assessment of reactivity in lime pastes

Modelling of Lead and Cadmium Removal by Porous Biosorbent in Silent and Ultrasound-assisted Systems

Polyurethane Loaded with Vegetable Activated Carbon for Heavy Metals Removal from Water

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