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Herayati, Herayati
Center Of Excellence For Local Food Innovation University Of Sultan Ageng Tirtayasa Department Of Chemical Enginering, Universitas Sultan Ageng Tirtayasa Banten
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Journal : World Chemical Engineering Journal

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The Synthesis of Glutaraldehyde-modified Chitosan Utilizing MAOS (Microwave Assisted Organic Synthesis) Method as Adsorbent of Pb(II) Ions Contained in Water Sample of Cikapundung River - Bandung Herayati, Herayati; Wahyuningrum, Deana
World Chemical Engineering Journal VOLUME 4 NO. 1 JUNE 2020
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v4i1.10591

Abstract

Indonesia has a vast territory. Approximately 2/3 of Indonesia is water. Indonesia has almost 6% of the world's water resources or approximately 21% of water resources in the Asia Pacific region. Indonesian waters comprise 97.4% seas and 2.6% are rivers, lakes and straits. There are 309 rivers in Indonesia and 49 of them flow through Bandung; one of them is Cikapundung River. Pb(II) ions contained in Cikapundung River has exceeded the quality standard of water river. Therefore, it is necessary to reduce the amount of Pb(II) ions from the river. One of the solutions is by using biodegradable adsorbent, the glutaraldehyde-modified chitosan. Chitosan was obtained from deacetylation of chitin in basic condition. The chitosan was characterized using FTIR showed 85.5% degrees of deacetylation. The other characterization is determination of average molecular mass using Ostwald viscometry method, obtained the average molecular mass of chitosan is 2.7 x 106 g/mol. Furthermore, chitosan was modified by reacting with glutaraldehyde using MAOS (Microwave Assisted Organic Synthesis) method at 80℃ with irradiation power of 100 W for 60 minutes to form glutaraldehyde-modified chitosan with 79% degree of substitution. The synthesized glutaraldehyde-modified chitosan was characterized by FTIR, SEM, SAA and applied as adsorbent of Pb(II) ions. The results showed that the optimum condition of adsorption for 15 mL of Pb(II) solution was achieved at pH 4 using 0.075 grams of adsorbent and 90 minutes of contact time. The adsorption process of Pb(II) ions follows the Langmuir isotherm model and the pseudo-second order kinetics with percent adsorption of Pb(II) ions from the water sample of Cikapundung river is 84% and 50.2%, for sample collected from middle-stream and downstream of river, respectively.
The Utilization of Zeolite from Laundry Waste Processing as a Soil-zeolite Growing Media for Corn Plant Maryani, Yeyen; Herayati, Herayati; Petrus, Dhannydon; Simatupang, Petrus Edison
World Chemical Engineering Journal VOLUME 8 NO.1 JUNE 2024
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/wcej.v8i1.25895

Abstract

Laundry waste containing detergent can release large amounts of Linear Alkylbenzene Sulfonate (LAS), as an active compound, and phosphates into the groundwater. One method for solving this problem is adsorption using natural zeolite. In this study, an innovation was made to utilize zeolite resulting from the processing of laundry wastewater as a growing media with soil for corn plants. The research methodology included activation of Bayah-Banten natural zeolite, adsorption process of LAS and phosphate from laundry waste by varying the contact time (0-60 minutes) and stirring speed (150-350 rpm), analysis of LAS and phosphate content, application of zeolite, obtained from waste treatment, as a soil-zeolite growing media for corn plants, and analysis of corn morphology (stem height, stem circumference and number of leaves).The results showed that the treatment of laundry waste using the adsorption method can reduce the concentration of LAS and phosphate in wastewater. The lowest LAS concentration was obtained at a stirring speed of 300 rpm and a contact time of 60 minutes, from 0.206312 mg/L (initial LAS) to 0.13747 mg/L (final LAS). The lowest phosphate concentration was obtained at a stirring speed of 350 rpm and contact time of 60 minutes, from 0.272184 mg/L (initial phosphate) to 0.06658 mg/L (final phosphate). The application of zeolite as a growing media with a ratio of soil and zeolite of 75:25 showed a good result in the morphology of corn plants, growth in stem height of 67.74% and stem circumference of 41.67%.
Co-Authors Agus Rochmat Agus Rochmat Agus Rochmat Agus Rochmat Agus Rochmat Ahmad Buhari Ahmad Bukhari Ahmad Hariri Ambarita, Petrus Alvin Peter Anis Azizah Anjar Hermadi Saputro Annisa Rahma Aryanti Astuti, Puput Puji Ayudya, Malika Aziza Bella Triyanti, Sinta Damar Nurwahyu Bima Deana Wahyuningrum Dela Ayu Fitria Dewi, Dea Puspa Elianasari Elianasari, Elianasari Fajri Ikhsan Fitri Nadiyah, Syakirah Hakiki, Salsabila Sofia Handayani, Kiki Yuli Hani Nurul Fadhilah Ika Rifqiawati Ina Indriana Ina Indriana Indah Puspita Sari Indah Puspita Sari, Indah Puspita Izzati, Aluna Monalaika Karen Erlangga Karima, Naura Putri Lia Nurliana M. Ganiadi Made Helen Susanti Mahardika, Aurellia Azzahra Margareth, Angelica Maryani, Yeyen Mentari, Corona Meri Yulvianti Meri Yulvianti Mufaza, Wahya Muhammad Farhan Muhammad Triyogo Adiwibowo Nieyan, Putri Ananda Nurbaiti, Siwi Nurrahmah, Salsabila Pebriyanti, Ine Petrus, Dhannydon Rahim, Audy Nasyiah Rahmadani, Sinta Salsabila, Keisya Yumna Saputra, Iwan Syahjok Shefia Dhiya Khansa Simatupang, Petrus Edison Siti Fadilla Suaedah Suaedah Syahjoko Saputra, Iwan Syaputra, Iwan Syahjoko Syarif Abdullah Tia Azzahra Putri Tifani Pardede Ullaya Syarifah Veni Putri Nurhayati Widya Ernayati Kosimaningrum Yayan Maryani Yazid Rukmayadi Yeyen Maryani Yeyen Maryani Yeyen Maryani Yeyen Maryani