Removal of lead and fluoride from contaminated water using exhausted coffee grounds based bio-sorbent

Babu, A. Naga; Reddy, D. Srinivasa; Kumar, G. Suresh; Ravindhranath, K.; Mohan, G. Krishna

doi:10.1016/j.jenvman.2018.04.091

Cited by 70 publications

(13 citation statements)

References 50 publications

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“…Exhausted coffee grounds are capable of removing the fluoride from the water sources with a removal efficiency from 88.8 till 95.1% [43]. In our study, we can see a trend: the fluoride concentration is more influenced by the dose of the exhausted coffee grounds than by the time of mixing.…”

Section: Discussionsupporting

confidence: 46%

“…In this case, the optimum conditions are the dose of 60 g/L and the mixing time of 60 min or the dose of 50 g/L and the mixing time of 90 min, when the fluoride concentration falls to 56.67%. The difference in the lower fluoride removal efficiency in our study may be due to the fact that we did not change the pH of the solution, and the researchers, Naga Dabu and colleagues, obtained the most efficient fluoride removal at very low pH = 4 [43].…”

Section: Discussionmentioning

confidence: 65%

“…Despite a small area of the surface, as compared to activated carbon, the waste of coffee grounds is saturated with valuable organic components that stimulate higher sorptive ability [42]. Bio-sorbent, as exhausted coffee grounds, is also recyclable and capable of removing the lead and fluoride from the domestic and industrial waste-water sources, with an overall removal efficiency of about 90% [43].…”

Section: Introductionmentioning

confidence: 99%

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Removal of Fluorides from Aqueous Solutions Using Exhausted Coffee Grounds and Iron Sludge

Siaurusevičiūtė

Albrektienė

2021

Water

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Many countries are confronted with a striking problem of morbidity of fluorosis that appears because of an increased concentration of fluorides in drinking water. The objective of this study is to explore opportunities for removal of fluoride from aqueous solutions using cheap and easily accessible adsorbents, such as exhaustive coffee grounds and iron sludge and to establish the efficiency of fluoride removal. Twelve doses (1, 2, 3, 4, 5, 6, 10, 20, 30, 40, 50 and 60 g/L) of adsorbents were used and five durations of the sorption process (30, 60, 90, 120 and 150 min). The results showed that the most optimum dose of iron sludge for 3 mg/L of fluoride removal was 30 g/L and the contact time was 30 min, the efficiency of fluoride removal achieved 62.92%; the most optimum dose of exhausted coffee grounds was 60 g/L with the most optimum contact time of 60 min; at a dose of 50 g/L with contact time of 90 min, the efficiency of fluoride removal achieved 56.67%. Findings demonstrate that adsorbents have potential applicability in fluoride removal up to the permissible norms.

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Section: Discussionsupporting

confidence: 46%

Section: Discussionmentioning

confidence: 65%

Section: Introductionmentioning

confidence: 99%

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Removal of Fluorides from Aqueous Solutions Using Exhausted Coffee Grounds and Iron Sludge

Siaurusevičiūtė

Albrektienė

2021

Water

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“…It is keenly observed that the performance of such bio‐sorbent operations is mostly influenced by operational factors, namely sorbent dosage, time of contact, pH, and initial contaminant concentration (Naga Babu, Krishna Mohan, Kalpana, & Ravindhranath, ; Naga Babu, Srinivasa Reddy, Suresh Kumar, Ravindhranath, & Krishna Mohan, ). Optimization of these operational parameters plays a crucial role in the economics of the sorption operation (Sen, Raut, Dora, & Mohapatra, ).…”

Section: Experimental Methodologymentioning

confidence: 99%

Sequential synergetic sorption analysis of Gracilaria Rhodophyta biochar toward aluminum and fluoride: A statistical optimization approach

Babu

Reddy

Govindarajan

et al. 2020

Water Environment Research

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The present work proposes the synthesis of robust biochar from Gracilaria Rhodophyta red weeds for sequential removal of Al(III) and fluoride from wastewater. The sorption experiments have been modeled by preliminary optimization of operational parameters using 2 4 factorial statistical modeling. The model has estimated an optimum sequential synergetic removal of 44.5 mg/g of Al(III) and 2.1 mg/g of fluoride onto the biochar. FESEM, BET, XRD, EDX, and FTIR established the potentiality of biochar toward synergetic sorption of Al(III) and fluoride. The thermodynamic analysis projected that the adsorption is physisorption in nature. The adsorption of Al(III) and fluoride follows the Langmuir and Freundlich isotherm models, respectively, and the kinetic analysis established the pseudo-second-order deposition of Al(III) and fluoride ions. The synthesized adsorbent is regenerative enough and could achieve synergetic removal of Al(III) and fluoride ions from industrial-and groundwater-contaminated water bodies. © 2019 Water Environment Federation • Practitioner points• Biochar from seaweeds is explored in the sequential removal of Al(III) and F − ions. • Statistical model is developed for % adsorption and tested for reliability by ANOVA. • GRBC sorbed 44.5 and 2.1 mg/g of Al(III) and F − ions, respectively, at optimum levels. • FESEM, EDX, XRD, and FTIR characterization confirm the potentiality of the GRBC. • GRBC sorbed ⃞90% of Al(III) and F − ions from wastewater and is regenerative.

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“…Logam berat memiliki stabilitas yang tinggi dan mudah diikat oleh organisme melalui proses bioakumulasi logam berat dalam ekosistem. Hingga saat ini sebagian besar penelitian difokuskan pada logam berat yang lebih beracun seperti tembaga, arsen, timbal dan kadmium (Naga Babu, et al, 2018). Beberapa metode yang digunakan untuk menurunkan kadar logam berat dalam air limbah diantara-Nya dengan presipitasi kimia, adsorpsi, filtrasi membran, pertukaran ion dan koagulasi-flokulasi.…”

Section: Pendahuluanunclassified

Efektivitas Kombinasi Kitosan dan Ampas Kopi sebagai Adsorben Alami dalam Menurunkan Konsentrasi Arsen Pada Limbah Cair PT PXI

Nurhidayanti

Ilyas

Suwazan

2021

JTI

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Abstrak PXI adalah salah satu perusahaan di Kabupaten Bekasi yang bergerak di bidang jasa layanan laboratorium. Dalam menjalankan kegiatannya, PXI menghasilkan logam arsen ke lingkungan. Keberadaan arsen di dalam air limbah PXI harus segera diselesaikan agar tidak mencemari lingkungan dan membahayakan kehidupan manusia. Metode yang digunakan dalam penelitian ini adalah metode eksperimen dan deskriptif kuantitatif berdasarkan data hasil laboratorium menggunakan instrumen FT-IR, SEM EDX dan AAS. Tahapan penelitian terdiri dari sintesis, karakterisasi dan penggunaan adsorben alami untuk menurunkan logam arsen pada air limbah. Hasil penelitian menunjukkan bahwa penggunaan adsorben alami kitosan dan karbon aktif ampas kopi 1,4 gram dapat menghasilkan efisiensi penurunan logam arsen tertinggi sebesar 86,18% dengan konsentrasi akhir sebesar 0,79 mg/L. Namun hasil tersebut belum memenuhi baku mutu logam arsen yang ditetapkan Peraturan Menteri Lingkungan Hidup Nomor 12 Tahun 2020. Sehingga perlu dilakukan penelitian lebih lanjut untuk meningkatkan efisiensi penurunan logam arsen. Abstract PXI is one of the companies in Bekasi Regency which is engaged in laboratory services. In carrying out its activities, PXI produces arsenic metal into the environment. The presence of arsenic in PXI wastewater must be resolved immediately so as not to pollute the environment and endanger human life. The method used in this study is an experimental and quantitative descriptive method based on laboratory data using FT-IR, SEM EDX and AAS instruments. The research stages consisted of synthesis, characterization and the use of natural adsorbents to reduce arsenic metal in wastewater. The results showed that the use of chitosan natural adsorbent and 1.4 gram coffee grounds activated carbon could produce the highest arsenic metal reduction efficiency of 86.18% with a final concentration of 0.79 mg/L. However, these results do not meet the quality standard for arsenic metal as stipulated by the Regulation of the Minister of the Environment Number 12 of 2020. So it is necessary to do further research to increase the efficiency of reducing metal arsenic.

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Removal of lead and fluoride from contaminated water using exhausted coffee grounds based bio-sorbent

Cited by 70 publications

References 50 publications

Removal of Fluorides from Aqueous Solutions Using Exhausted Coffee Grounds and Iron Sludge

Removal of Fluorides from Aqueous Solutions Using Exhausted Coffee Grounds and Iron Sludge

Sequential synergetic sorption analysis of Gracilaria Rhodophyta biochar toward aluminum and fluoride: A statistical optimization approach

Efektivitas Kombinasi Kitosan dan Ampas Kopi sebagai Adsorben Alami dalam Menurunkan Konsentrasi Arsen Pada Limbah Cair PT PXI

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