scholarly journals Pemanfaatan Limbah Carsul Sebagai Koagulan untuk Menurunkan Konsentrasi Chrome Hexavalent Dalam Air Limbah Industri Nikel

2021 ◽  
Vol 6 (2) ◽  
pp. 55
Author(s):  
Muhammad Muzammil Ikmal ◽  
Mery Selintung ◽  
Rosalinda Ibrahim
Keyword(s):  
Waste Water ◽  
Removal Efficiency ◽  
Mining Activities ◽  
Stirring Time ◽  
Nickel Mining

Pertambangan merupakan suatu kegiatan yang berhubungan dengan lingkungan. Pertambangan nikel di Sorowako yang saat dipegang oleh PT. Vale Indonesia, Tbk, Salah satu limbah yang dihasilkan pada kegiatan penambangan bijih nikel berupa Carsulyang berasal dari sulphur melteryang merupakan sumber mineral yang dapat diolah kembali. Tujuan penelitian ini adalah untuk mengetahui besar kandungan Chrome Hexavalent dalam air limbah hasil produksi tambang nikel PT. Vale Indonesia, Tbk. dan menganalisis pengaruh massa koagulan (Carsul)serta lama waktu pengadukan terhadap efisiensi penyisihan Chrome Hexavalent dalam air limbah tambang nikep PT. Vale Indonesia. Tbk. Metodologi yang digunakan adalah kuantitatif eksperimen. Hasil penelitian menunjukkan kandungan air limbah hasil produksi PT. Vale Indonesia, Tbk 0,2 ppm, adapun massa koagulan yang paling efektif adalah 5gram dengan rata-rata efisiensi penyisihan Chrome Hexavalent sebesar 98,5%, dan lama waktu pengadukan optimum adalah 20 detik dengan rata-rata efisiensi penyisihan Chrome Hexavalent sebesar 97,2%. Berdasarkan nilai penyisihan kadarChrome Hexavalent oleh Carsul sebagai koagulan cukup memberikan pengaruh positif dan cukup efektif.Mining is an activity related to the environment. Nickel mining in Sorowako, which was currently held by PT. Vale Indonesia, Tbk, One of the wastes generated in nickel ore mining activities is Carsul which comes from sulfur melter which is a mineral source that can be reprocessed. The purpose of this study was to determine the content of Chrome Hexavalent in the waste water produced by the nickel mine of PT. Vale Indonesia, Tbk. and to analyze the effect of coagulant mass (Carsul) and the length of time of stirring on the removal efficiency of Chrome Hexavalent in PT. Vale Indonesia. Tbk. The methodology used is quantitative experiment. The results showed that the content of waste water produced by PT. Vale Indonesia, Tbk 0.2ppm, while the most effective coagulant mass is 5 grams with an averageremoval efficiency Chrome Hexavalent of 98.5%, and the optimum stirring time is 20 seconds with an averageremoval efficiency Chrome Hexavalent of 97.2. %. Based on the removal value oflevels Chrome Hexavalent by Carsul as a coagulant, it was quite positive and quite effective.

REVIEWS OF ELECTROCOAGULATION PROCESS ON WASTE WATER TREATMENT TECHNOLOGY

2017 ◽  
Vol 9 (1) ◽  
Author(s):  
Taty Hernaningsih
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Removal Efficiency ◽  
Industrial Waste ◽  
Waste Water Treatment ◽  
Treatment Technique ◽  
Industrial Waste Water ◽  
Strong Current ◽  
Current Voltage ◽  
Electrocoagulation Process

Waste water treatment by industry usually uses chemicals that may lead to additional environmental pollution load. On the other hand, water demand increases and environmental regulations regarding waste water disposal requirements that apply more stringent. It is necessary for waste treatment technique that accommodate this requirement. Electrocoagulation process is a technique of wastewater treatment that has been chosen because the technique is environmentally friendly. This paper will review some of the research or application electrocoagulation process which is conducted on industrial waste water. Types of industrial waste water that is to be reviewed include: industries batik, sarongs, textiles, palm oil, slaughterhouses, food, leather tanning, laundry, pulp and paper. Overview reviewed in this research include the waste water treatment process in several processing variations such as: change in time, electricity and kind of electrodes. The results of the research with electrocoagulation process in the industry are the removal efficiency of TSS, COD, BOD5, Chrome, phosphate, surfactants, color turbidity influenced by several factors including time, strong current, voltage, distance and type of electrode and pH. The results of the study with electrocoagulation process in the industry is the removal efficiency of TSS, COD, BOD5, chromium, phosphate, surfactant, turbidity color that are influenced by several factors including time, strong current, voltage, distance and type of electrode and pH. It is hoped the information presented in this article can be a reference for similar research for the improvement of research on the process ektrokoagulasi.Key words: elektrocoagulation, removal eficiency, environmental friendly

scholarly journals A new biocompatible ternary Layered Double Hydroxide Adsorbent for ultrafast removal of anionic organic dyes

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Garima Rathee ◽  
Amardeep Awasthi ◽  
Damini Sood ◽  
Ravi Tomar ◽  
Vartika Tomar ◽  
...  
Keyword(s):  
Waste Water ◽  
Methyl Orange ◽  
Surface Area ◽  
Layered Double Hydroxide ◽  
Removal Efficiency ◽  
Organic Dyes ◽  
High Surface ◽  
High Surface Area ◽  
Morphological Studies ◽  
Double Hydroxide

Abstract It would be of great significance to introduce a new biocompatible Layered Double Hydroxide (LDH) for the efficient remediation of wastewater. Herein, we designed a facile, biocompatible and environmental friendly layered double hydroxide (LDH) of NiFeTi for the very first time by the hydrothermal route. The materialization of NiFeTi LDH was confirmed by FTIR, XRD and Raman studies. BET results revealed the high surface area (106 m2/g) and the morphological studies (FESEM and TEM) portrayed the sheets-like structure of NiFeTi nanoparticles. The material so obtained was employed as an efficient adsorbent for the removal of organic dyes from synthetic waste water. The dye removal study showed >96% efficiency for the removal of methyl orange, congo red, methyl blue and orange G, which revealed the superiority of material for decontamination of waste water. The maximum removal (90%) of dyes was attained within 2 min of initiation of the adsorption process which supported the ultrafast removal efficiency. This ultrafast removal efficiency was attributed to high surface area and large concentration of -OH and CO32− groups present in NiFeTi LDH. In addition, the reusability was also performed up to three cycles with 96, 90 and 88% efficiency for methyl orange. Furthermore, the biocompatibility test on MHS cell lines were also carried which revealed the non-toxic nature of NiFeTi LDH at lower concentration (100% cell viability at 15.6 μg/ml). Overall, we offer a facile surfactant free method for the synthesis of NiFeTi LDH which is efficient for decontamination of anionic dyes from water and also non-toxic.

scholarly journals Analisis Kualitas Air Di Lahan Reklamasi Pertambangan Nikel Desa Mohoni, Petasia Timur, Morowali Utara

2020 ◽  
Vol 6 (1) ◽  
pp. 96
Author(s):  
FX Anjar Tri Laksono ◽  
Indra Permanajati ◽  
Rahmat Mualim
Keyword(s):  
Water Quality ◽  
Environmental Quality ◽  
Environmental Conditions ◽  
Quality Standards ◽  
Mining Activities ◽  
Environmental Quality Standards ◽  
Test Parameters ◽  
Nickel Mining ◽  
Quality Water ◽  
Reclamation Area

In Mohoni Village, East Petasia District, North Morowali Regency there are nickel mining activities that are carried out by PT. Asiamax Mining Indonesia. Several locations were mine out status. Hence, reclamation programs are made to improve environmental conditions before mining. One of these stages is water quality tests to ensure that the reclamation area is worthy to be a habitat for animals and plants. The purpose of this study is to find out the water quality in the reclamation area of the ex-nickel mining in Mohoni Village. The storet method is used to analyze water quality whose test parameters include pH, total suspanded solid (TSS), concentrations of copper (Cu), cadmium (Cd), zinc (Zn), lead (Pb), nickel (Ni), chromium valence 6, iron (Fe), manganese (Mn), and cobalt (Co) once every three months for a year.The quality water check results are compared with the environmental quality standards in accordance with law number 32 of 2009. Based on the average monitoring results show that the water quality is classified as moderately polluted. The conclusion from this study is that reclamation land might be not used as habitat for animals and plants because the availability of water is not suitable for consumption

scholarly journals Tailings From Mining Activities, Impact on Groundwater, and Remediation

2001 ◽  
Vol 6 (2) ◽  
pp. 35
Author(s):  
Khalid Al-Rawahy
Keyword(s):  
Waste Water ◽  
Suspended Solids ◽  
Mining Industry ◽  
Mining Activities ◽  
Dissolved Metals ◽  
Mining Operations ◽  
Metal Pollutants ◽  
Tailings Pond ◽  
Potential Groundwater ◽  
Tailings Ponds

Effluent wastes from mining operations and beneficiation processes are comprized mostly of the following pollutants: total suspended solids (TTS), alkalinity or acidity (pH), settleable solids, iron in ferrous mining, and dissolved metals in nonferrous mining. Suspended solids consist of small particles of solid pollutants that resist separation by conventional means. A number of dissolved metals are considered toxic pollutants. The major metal pollutants present in ore mining and beneficiation waste waters include arsenic, cadmium, copper, lead, mercury, nickel, and zinc. Tailings ponds are used for both the disposal of solid waste and the treatment of waste-water streams. The supernatant decanted from these ponds contains suspended solids and, at times, process reagents introduced to the water during ore beneficiation. Leakage of material from tailings pond into groundwater is one possible source of water pollution in the mining industry. Percolation of waste-water from impoundment may occur if tailings ponds are not properly designed. This paper addresses potential groundwater pollution due to effluent from mining activities, and the possible remediation options.

scholarly journals DAMPAK POSITIF AKTIVITAS PERTAMBANGAN NIKEL TERHADAP KONDISI SOSIAL EKONOMI MASYARAKAT DI KECAMATAN TINANGGEA KABUPATEN KONAWE SELATAN

2019 ◽  
Vol 2 (1) ◽  
pp. 58
Author(s):  
Suriyani BB
Keyword(s):  
Positive Impact ◽  
Mining Industry ◽  
Economic Life ◽  
Mining Activities ◽  
Mining Sector ◽  
Mining Areas ◽  
Mining Companies ◽  
The People ◽  
Nickel Mining ◽  
Monthly Salary

One sector that contributes to foreign exchange is the dominant mining sector. This mining sector contributes 36% of the country's revenue. Among the activities of the nickel mining industry, it has had a positive impact on the state treasury from taxes and royalties. Therefore, the existence of these natural resources has economic potential that must be utilized in order to prosper the lives of the people in accordance with the provisions of Article 33 of the 1945 Constitution (paragraph 2). This study tries to examine the positive impact of nickel mining activities on the socio-economic conditions of the community. The purpose of the study was to describe the positive impact of nickel mining activities on the socio-economic life of the community in Tinanggea sub-district. The research method uses a qualitative approach based on data collection with observation techniques, interviews with informants and review documents related to this research.the results showed that the positive impact of nickel mining activities in Tinanggea District was that it could accommodate local workers or increase the opportunity for people to get jobs in mining companies, increasing community income through monthly salary gains, increasing micro-businesses in the surrounding mining areas. buying and selling activities between the community and employees working in mining companies. While the conclusions of the study were that mining activities in Tinanggea Subdistrict had a positive impact on the people of the region. Keywords :  Positive impact of nickel mining activities, Socio-economic community. 

scholarly journals Chromium (III) Removal from Synthetic Wastewater Using Biochar Produced from Vegetable Tanned Leather Shaving Dust

2020 ◽  
pp. 68-80
Author(s):  
Tasrina R. Choudhury ◽  
U. H. Bodrun Naher ◽  
Sarifa Akter ◽  
Bilkis A. Begum ◽  
M. Safiur Rahman
Keyword(s):  
Waste Water ◽  
Removal Efficiency ◽  
Low Cost ◽  
Sem Analysis ◽  
Synthetic Wastewater ◽  
Thermal Resistivity ◽  
Solution Ph ◽  
Interaction Factors ◽  
The Impact ◽  
Adsorbent Dose

In recent years, the rapid industrialization leads to increase industrial discharges without any appropriate treatment. The present study deals with the removal of Cr (III) ions from aqueous solutions by ZnCl2 treated biochar produced from vegetable tanned leather shaving dust. Effect of various process parameters like solution pH, adsorbent dose, adsorbent type, initial Cr (III) concentration and temperature have been studied in batch system. The thermal resistivity and scanning electron microscopy (SEM) analysis were engaged to perceive the surface morphologies of chemically treated and untreated biochar adsorbent. The experimental data was fitted well to the Langmuir adsorption isotherm model and the adsorption efficiency of chromium (III) was found to be maximum (70%) at low values of pH (around 3) for 0.75 g/50 mL dose of ZnCl2 treated biochar adsorbent. The model matrix of 24 full factorial design approach has been applied at a 95% confidence level to find the impact of different variables on removal Cr(III) ions from waste water. This study revealed that three main factors: Adsorbent type (p < 0.0001; 66.39%), pH (p < 0.001; 16.01%) and adsorbent dose (p = 0.032; 12.15%) have significant impact on Cr (III) ions removal efficiency. For using ZnCl2 biochar, Cr(III) ions removal efficiency was increased 66.39% compared to using untreated biochar. Subsequently, two interaction factors: pH-time and adsorbent type-time (α = 0.05, p < 0.05) have shown statistically significant on Cr(III) ions removal efficiency. The ZnCl2 treated biochar adsorbent prepared from vegetable tanned leather shaving dust is efficient and it is proposed that it can be conveniently employed as a low cost alternative in the treatment of industrial waste water.

scholarly journals Study on the diversity of denitrification bacteria treating with wastewater by using PPGC filler on SBMBBR at low temperature

2020 ◽  
Vol 158 ◽  
pp. 04002
Author(s):  
Jinxiang Fu ◽  
Zhe Zhang ◽  
Jinghai Zhu
Keyword(s):  
Waste Water ◽  
Low Temperature ◽  
Activated Sludge ◽  
Removal Efficiency ◽  
Relative Abundance ◽  
High Throughput Sequencing ◽  
Denitrifying Bacteria ◽  
Nitrifying Bacteria ◽  
Ammonia Oxidizing Bacteria ◽  
Biological Nitrogen

Aiming at the problem of the low removal efficiency of biological nitrogen-removing of low temperature waste-water, using Polyurethane Porous Gel Carrier (PPGC)-SBMBBR treated low temperature sewage, in compared with conventional SBR,and viaing Miseq high-throughput sequencing technology in analysis of the differences of microbial diversity and abundance of structure on the two reactors of activated sludge, revealed dominant nitrogen-removing bacterium improving the treatment efficiency of low temperature sewage. The results shows that the removal efficiency of the effluent nitrogen and the sludge sedimentation rate of (PPGC)-SBMBBR reactor are significantly improved under the water temperature (6.5±1℃). Adding the filler can contribute to improvement of bacterial diversity and relative abundance of nitrification and denitrification bacterium in the activated sludge system. The main relative abundance of ammonia oxidizing bacteria (AOB),nitrite oxidizing bacteria (NOB),anaerobic denitrifying bacteria, and aerobic denitrifying bacteria in (PPGC)-SBMBBR(R2) are significantly better than SBR (R1),and the R2 reactor can independently enrich the nitrifying bacteria and the aerobic denitrifying bacteria, such as Nitrospira, Hydrogens, Pseudomonas, and Zoogloea. The total relative abundance of dominant and nitrifying denitrifying bacterium increases from 28.65% of R1 to 60.23% of R2, providing a microbiological reference for improving the efficiency of biological nitrogen removal in low temperature waste-water.

scholarly journals Efficiency Analysis of CBA Full-scale Hospital Waste Water Treatments in Indonesia Using Combined Biological AOP System: Investigation on Operating Conditions, Treatment Efficiency and Energy

2018 ◽  
Vol 73 ◽  
pp. 05022
Author(s):  
Pranoto Hadi ◽  
Rame Rame ◽  
Wuryadi EvFajar ◽  
Sofie Mohamad ◽  
Sulistyo Utomo Ary ◽  
...  
Keyword(s):  
Waste Water ◽  
Removal Efficiency ◽  
Average Energy ◽  
Quality Standard ◽  
Catalytic Ozonation ◽  
Full Scale ◽  
Operating Conditions ◽  
Treatment Efficiency ◽  
Hospital Waste ◽  
Water Treatments

Combined biological AOP system, or CBA, are increasingly being used in Indonesia to treatment hospital waste water, that are otherwise difficult to treatment in conventional methods. CBA catalytic ozonation are now used for over 579 hospitals, making this tool a major phenomenon for high adopt hospital waste water treatments in Indonesia, and one that has experienced great expansion over the past three years. The question of whether the CBA is a good or a bad tool for the treatment hospital waste water depends on many parameters. To respond to this question, it is necessary to investigate on operating conditions, but it is also very important to gather more data and conduct further research on treatment efficiency and energy. In this paper, we examined and discuss to gain a better understanding of the CBA environmental technology and of its impacts. About 100 CBA Full-scale Hospital waste water treatments have been investigated, and it was in Indonesia from eight provinces. CBA demonstrate good removal efficiency of macro-pollutants from hospital waste water and meet the requirements as per LH R.I. Number 5 Year 2014 on Wastewater Quality Standard and LHK R.I. Number P.68 / Menlhk / Setjen / Kum.1 / 8/2016 Concerning the Quality Standards of Domestic Waste Water. Various parameters of macro-pollutants such as pH, temperature, TDS, TSS, BOD 5, COD, oil fat, and MBAS also amonia nitrogen and total coliform were analysed to identify the performance of CBA. We obtained the average energy consumption per cycle is 0.504 kWh, capacity V m3/hours which treatment cost Rp 1.478/m3 and 60,96%-94,00% removal efficiency of macro-pollutants. CBA catalytic ozonation reported here is very efficient and environmental friendly for treatment hospital waste water.

Study on the Adsorption Effect of Active Carbon of Various Compozitions in Polytetrahydrofuran Waste Water

2013 ◽  
Vol 663 ◽  
pp. 894-898
Author(s):  
Xiao Na Ji ◽  
Sheng Shu Ai ◽  
Yan Zuo ◽  
Qing Kai Ren ◽  
De Jun Bian
Keyword(s):  
Waste Water ◽  
Active Carbon ◽  
Array Detector ◽  
Diode Array Detector ◽  
Adsorption Effect ◽  
Column Temperature ◽  
Chromatography Analysis ◽  
Carbon Adsorption ◽  
Stirring Time ◽  
Absorption Condition

This paper prensents the chromatography analysis condition study on the main poluted compozotion(furaldehyde and furfuran) in polytetrahydrofuran waste water with HPLC-DAD. Given the chromatography condition is that ODS is the stationary phase, the mix liquid in which methenyl:water = 75:25 is the mobile phase, the flow is 1.00 mL•min-1, using diode array detector(detect wavelength when furaldehyde is 274 nm and furfuran in 208nm), the injection volume is 2.0µL, the column temperature is 25.0°C. This paper presents the study of treatment of polytetrahydrofuran waste water by active carbon adsorption, investigates the three conditions of the amount of active carbon, stirring time and absorption temprature, and confirms that the best absorption condition is that the amount of active carbon is 3.0g, stirring for 30min and room temprature 20°C.

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