Adsorption of copper on activated Ganga sand from aqueous solution: kinetics, isotherm, and optimization

Mritunjay,; Quaff, A. R.

doi:10.1007/s13762-021-03651-1

Cited by 5 publications

(2 citation statements)

References 30 publications

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“…The results of an ANOVA are generally expressed as P > F value, F value, R 2 value, adjusted R 2 , adequate precision (AP), and coefficient of variance (CV) (Mritunjay & Quaff, 2021). The above-mentioned parameters can be used to predict model behavior.…”

Section: Statistical Analysis By Design Expert 13 Softwarementioning

confidence: 99%

Modelling of corrosion rate in the drinking water distribution network using Design Expert 13 software

Kumar

Singh

Maurya

2023

Environ Sci Pollut Res

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This study focused on the modelling of corrosion rate of the water distribution network of Patna, (Bihar), India using Design Expert 13 software. A total of nine variables, including pH, temperature, total dissolved solid (TDS), alkalinity, calcium hardness, chloride, sulphate, dissolved oxygen (DO), and time, were considered for modelling. The physicochemical parameters were determined through regular monitoring of water samples. The corrosion rate was determined by direct monitoring of water distribution pipes using adjustments of seven GI coupons for 45, 90, 135, 180, 225, 270, and 315 days. Modelling was performed using the low level and high-level experimental range for pH, temperature, TDS, alkalinity,

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Section: Statistical Analysis By Design Expert 13 Softwarementioning

confidence: 99%

Modelling of corrosion rate in the drinking water distribution network using Design Expert 13 software

Kumar

Singh

Maurya

2023

Environ Sci Pollut Res

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“…Pencemaran lingkungan yang disebabkan oleh perkembangan industri dapat dicegah melalui upaya pengendalian pencemaran lingkungan dengan mengolah limbah sebelum dibuang ke lingkungan. Salah satu cara untuk menurunkan kandungan logam-logam tersebut dilakukan dengan cara adsorpsi (Haryanto et al, 2018;Mritunjay & Quaff, 2022).…”

Section: Pendahuluanunclassified

MODIFIKASI pH SILIKA MESOPORI DARI PASIR PANTAI SEBAGAI ADSORBEN TIMBAL (Pb) DAN TEMBAGA (Cu) DALAM LIMBAH PERCETAKAN

Salamah¹,

Rahayu²

2023

JCHEM

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ABSTRAK Limbah industri umumnya mengandung logam Pb, Zn, Cr, Mn, dan Cu. Logam-logam ini sangat berbahaya sehingga perlu dilakukan pengolahan limbah, seperti menggunakan adsorben yang mempunyai luas permukaan besar, contohnya silika mesopori (SM). SM dapat dibuat dari silika pasir pantai. Pasir diekstraksi dengan larutan HCl untuk mendapatkan silika, dilanjutkan dengan refluks menggunakan NaOH. Silika diproses menjadi SM dengan templet Dodesil Amina (DDA). Proses pembentukan SM dalam kondisi asam dilakukan dengan variabel pH 3, pH 4 dan pH 5. SM yang terbentuk digunakan untuk adsorpsi limbah percetakan. Hasilnya menunjukkan karakter SM optimum didapatkan pada pH 4 dengan luas permukaan 286,46 m2/g, volume pori total 10,9 cm3/g dan diameter pori 15,21 nm. Limbah percetakan sebelum adsorpsi mengandung logam timbal (Pb) <0,009 mg/L, tembaga (Cu) 0,5589 mg/L, Biochemical Oxygen Demand (BOD) sebesar 1740 dan Chemical Oxygen Demand (COD) sebesar 6534. Adsorpsi limbah menggunakan SM optimum dilakukan pada waktu kontak 120 menit dengan kecepatan pengadukan 180 rpm. Kandungan Cu dalam filtrat setelah proses adsorpsi dengan kecepatan putaran pengaduk 180 rpm adalah sebesar 0,05 mg/L. Level BOD pada sampel setelah adsorpsi dengan waktu 120 menit terjadi penurunan 20 %, sedangkan level COD terjadi penurunan 50 %. Level BOD dan COD setelah adsorpsi masih relatif tinggi, yaitu masing-masing sebesar 1260 dan 3059,5. Hasil analisis dengan SEM-EDX Mapping pada adsorben SM setelah adsopsi menunjukkan bahwa pada adsorben masih terdapat logam Pb 1,17 %b/b dan Cu 1,48 %b/b. Hasil ini menunjukkan bahwa silika mesopori potensial dan dapat digunakan sebagai adsorben pada pengolahan limbah industri yang mengandung logam Pb dan Cu. Kata kunci: adsorpsi limbah, modifikasi pH, silika mesopori, tembaga, timbal. ABSTRACT Industrial waste generally contains Pb, Zn, Cr, Mn, and Cu metals. These metals are hazardous, therefore, a waste treatment needs to be carried out, such as by using a large surface area of adsorbent, for example, mesoporous silica (MS). MS can be prepared from beach sand silica. The sand was extracted using an HCl solution to obtain the silica, followed by refluxing it using NaOH. The silica was then processed into MS using a Dodecyl Amine (DDA) template. The process of forming MS in an acidic condition was done with the variables of pH 3, pH 4, and pH 5. The MS created was then used for the adsorption of printing waste. The results showed that the optimum MS character was obtained at pH 4 with a surface area of ??286.46 m2/g, a total pore volume of 10.9 cm3/g, and a pore diameter of 15.21 nm. The printing waste before the adsorption contained lead (Pb) of <0.009 mg/L, copper (Cu) of 0.5589 mg/L, BOD of 1740, and COD of 6534. The adsorption of waste by using the optimum MS was done at a contact time of 120 minutes with a stirring speed of 180 rpm. The content of Cu in the filtrate after the adsorption using a condition of the stirrer rotation speed of 180 rpm was 0.05 mg/L. The BOD level in the sample after the adsorption with a contact time of 120 minutes decreased by 20%, while the COD level reduced by 50%. The level of BOD and COD after adsorption was still relatively high, which was 1260 and 3059.5, respectively. The results of SEM-EDX Mapping analysis on the MS adsorbent after the adsorption contained 1.17 %w/w of Pb and 1.48 %w/w of Cu. These results showed that the silica mesopore was potentially used as an adsorbent for treating the printing waste containing Pb and Cu metals. Keywords: cuprum, lead, Mesoporous Silica (MS), pH modification, waste adsorption.

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Characterization of novel adsorbents from Phoenix dactylifera rachis. Box–Behnken design, kinetic, and isotherm models for BEZAKTIV Red S-MAX dye adsorption onto the produced carbons

Daoud

Kecira

Benturki

et al. 2023

Biomass Conv. Bioref.

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Adsorption of copper on activated Ganga sand from aqueous solution: kinetics, isotherm, and optimization

Cited by 5 publications

References 30 publications

Modelling of corrosion rate in the drinking water distribution network using Design Expert 13 software

Modelling of corrosion rate in the drinking water distribution network using Design Expert 13 software

MODIFIKASI pH SILIKA MESOPORI DARI PASIR PANTAI SEBAGAI ADSORBEN TIMBAL (Pb) DAN TEMBAGA (Cu) DALAM LIMBAH PERCETAKAN

Characterization of novel adsorbents from Phoenix dactylifera rachis. Box–Behnken design, kinetic, and isotherm models for BEZAKTIV Red S-MAX dye adsorption onto the produced carbons

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