Uji Efektivitas Cangkang Keong Mas (Pomacea canaliculata L.) Sebagai Biosorben Dalam Menyerap Logam Berat Merkuri (Hg)

Abstract

Adsorbent is one of the effective solutions to reduce the Hg metal content. The golden snail is a pest for agricultural and contains high of calcium carbonate. However, calcium carbonate can be used as an adsorbent. This study aimed to examine the effectiveness of golden snail shell powder in absorbing Hg metal. This research is a quantitative study consisting of dependent variables and independent variables. The dependent variable involved a concentration of 10 ppm mercury, and 100 rpm stirring time speed while the independent variable included of variations in powder mass and stirring time. The mass of golden snail powder used those are 0 gr, 5 gr, 10 gr, 15 gr, and 20 gr with a variation of stirring time for 15 minutes and 30 minutes for each sample of Hg metals. Each Hg sample was used at a concentration of 10 ppm. The calculation results obtained that the effectiveness of golden snail shell powder in absorbing Hg 10 ppm was the mass of 20 grams of golden snail powder with a stirring time of 30 minutes that was equal to 99.87% with the result of a decrease in concentration of 10 ppm Hg to 0.01 Hg ppm.

Efektivitas Cangkang Kerang Hijau (Perna viridis) Sebagai Penjernih Air Dan Biosorben Logam Besi (Fe)

“…Sesudah itu larutan didiamkan selama 24 jam, kemudian dilakukan penyaringan menggunakan kertas saring. Supernatant yang dihasilkan dianalisis dengan AAS untuk menentukan kadar logam beratnya [7]. Pada penelitian ini koagulan PAC (Poly Aluminium Chloride) digunakan sebagai pembanding yaitu dengan menambahkan sebanyak 5% kemudian dilakukan pengadukan cepat 120 rpm selama 1 menit dan pengadukan lambat 45 rpm selama 10 menit, dilanjutkan dengan mendiamkan selama kurang lebih 2 jam [8].…”

Karakterisasi dan Efektifitas Cangkang Bekicot (Achatina fulica) Sebagai Biosorben dalam Menyerap Logam Berat Fe pada Air Limbah Sintetik

“…Seperti yang ditunjukkan oleh ref. [9], produktivitas proses adsorpsi dalam kemampuan menahan logam berat dapat dibatasi dengan membandingkan konsentrasi logam Fe awal dengan konsentrasi logam Fe setelah adsorpsi, dengan persamaan berikut : Dimana EF adalah degradasi efektifitas, Y0 adalah konsentrasi awal logam Fe dan YF adalah konsentrasi logam setelah retensi.…”

“…Penyerapan logam berat Fe dikerjakan dengan menggunakan berbagai ragam berat dari biosorben cangkang bekicot serta periode pengadukan. Berat dari biosorben cangkang bekicot dan periode pencampuran adalah merupakan salah satu komponen yang dapat mempengaruhi peredaran/daur adsorpsi [9]. Berdasarkan Ref.…”

Evaluation in Alabio duck (Anas plathyrhincos Borneo) of soluble protein, protein digestibility, metabolizable energy and nitrogen retention of freshwater snail flesh (Pomacea paludosa) incubated with bromelain enzyme for different times and concentrations

“…They can dissolve very thick mucus and wash away the accumulation of parasites and worms on the organ walls, as well as having anti-microbial activity and anti-worm (Stepek et al, 2005) and anti-candida (Brakebusch et al, 2001) effects. These important properties are very useful for increasing the nutritional value of feed, specifically freshwater snail flesh because this flesh has several limiting factors, such as containing collagen and having viscosity that is higher than sea cucumber flesh (Purwaningsih and Triono, 2019) which contains pathogenic bacteria and worms (Hairani and Fakhrizal, 2017) and heavy metals (Widowati et al, 2019;Dharmawati et al, 2022;Mauriza et al, 2020). Thus, the purpose of the current study was to improve the quality of frehwater snail (P. paludosa) meat using the bromelain enzyme, based on its concentration and incubation time, so that it could be used optimally as a source of protein in duck feed.…”