Achmad Syafiuddin

• Doctor of Philosophy
• Senior Lecturer at Universitas Nahdlatul Ulama Surabaya

Purpose of Review Algae hold immense potential for industrial and environmental applications for their efficient carbon fixation and producing a range of valuable metabolites. However, their commercial cultivation is still challenging because of compromised productivities under various environmental stress conditions. Therefore, elite strains capab...

Metaldehyde contamination poses risks to the environment and public health. Biochar, a carbon-rich material, is recognized for its potential to adsorb water pollutants. This study assesses the effectiveness of oil palm kernel biochar (OPKB) and rice husk biochar (RHB) in removing metaldehyde, considering particle sizes, initial concentrations, and...

Bacterial infections continue to pose a significant challenge to public health especially in clean drinking water production. Hence, it is crucial to have effective methods for their elimination. The successful deactivation of bacteria like E. coli through emerging sonic means depends on the identification of their resonant frequencies. However, th...

Microplastics (MP) and nanoplastics (NP) are major aquatic contaminants, raising concerns due to their strong affinity for other toxic substances. Filtration is widely employed for MP and NP removal due to its simplicity, efficiency and variety of available filtration media. In this study, the removal efficiency of MP and NP was investigated using...

Purpose of Review The exponentially increasing plastic pollution in environment requires effective and sustainable biodegradation methods. Superworm (larvae of Zophobas atratus also known as Zophobas morio) have been shown to ingest and degrade plastics/microplastics depending on environmental conditions. Because there is no sufficient knowledge of...

Pondok Pesantren adalah bentuk lembaga pendidikan keagamaan yang tumbuh dan berkembang dari oleh dan untuk masyarakat yang berperan penting dalam pengembangan sumber daya manusia, diharapkan para santri dan para pemimpin serta pengelola pondok pesantren, tidak saja mahir dalam aspek pembangunan moral dan spiritual dengan intelektual yang bernuansa...

The performance of the extracted banana stem was tested using synthetic wastewater for turbidity removal. The banana stem was chosen for this study due to its abundance as waste. Previously, studies on banana stems were carried out by researchers but did not focus much on its active coagulant agent. This study was carried out to analyze the effect...

Pesantren merupakan salah satu lembaga pendidikan yang sangat krusial khususnya di kawasan pedesaan. Pengabdian masyarakat ini bertujuan untuk meningkatkan pemahaman tentang pemantauan kualitas air di PP Addurrriyah. PP Addurrriyah dipilih sebagai model pesantren yang berada di Desa Bangkes dan merupakan salah satu pesantren tradisional yang masih...

Purpose: This study addresses the need for comprehensive analysis of sanitation in public places in Indonesia, particularly focusing on community behavior aspects based on the complete components of Community-Based Total Sanitation (STBM). Recognizing the limitations of previous research, which primarily focused on sanitation facilities and afforda...

Spirulina is an edible, nontoxic, photoautotrophic, multicellular cyanobacterium (blue-green alga) with dynamic metabolic composition. Spirulina is rich in proteins (60–70%), carbohydrates (8–25%), lipids (6–20%), essential vitamins, minerals, essential fatty acids, chlorophylls, carotenoids, and phycobiliproteins. It is referred to as the “food fo...

This paper reviewed the impacts of climate change on the management of the water sector in Malaysia discussing the current status of water resources, water service, and water-related disasters. The implementation of engineering practices was discussed to provide the detailed assessment of climate change impacts, risks, and adaptation for sustainabl...

Microplastic (MP) is an emerging contaminant of concern due to its abundance in the environment. Wastewater treatment plant (WWTP) can be considered as one of the main sources of microplastics in freshwater due to its inefficiency in the complete removal of small MPs. In this study, a column-based MP removal which could serve as a tertiary treatmen...

Although investigation of microplastics (MPs) present in air environment has been intensively carried out, quantification, characteristics, and distribution of MPs released from the waste burning furnace (WBF) has been missing in literature. The aim of this study was to characterize the presence of MPs released from WBFs and analyze their associate...

Introduction: The active substance of pyrethroids, especially dimefluthrin, in insect repellent not only plays a role in killing mosquitoes but is also toxic to human health. This study aims to analyze the effect of insect repellent exposure on the histopathological findings in the liver and kidneys of the Wistar rat. Methods: This experimental stu...

In order to integrate cross-sectoral activities in stunting prevention, the East Java provincial government developed a Regional Action Plan for Food and Nutrition (RAPFN). The integration of multi-sectoral activities is predicted to be leveraged in stunting prevention. This study aims to obtain an overview of the important role of multi-sectoral p...

Soil nutrient recovery has emerged as a critical issue to maintain the soil fertility. However, the use of some organic and inorganic chemicals in agricultural and industrial systems gives rise to soil contamination. Advances in biological engineering have empowered for developing vermicomposting technology to decompose desired organic and inorgani...

The emission of hydrogen sulfide (H2S) from municipal solid waste is one of the environmental issues that raised the public's attention and awareness. Exposure to H2S that brings a foul smell of rotten eggs will cause headaches, irritation, dizziness, fatigue, and even death if the concentration of H2S is too high. The study's goals are to investig...

Organophosphate compounds in insect repellent have a role in contributing to mosquito mortality but have toxic effects for humans when exposed for a long time. The research is aimed to analyze the effect of insect repellent exposure in blood leukocyte profile and histopathologic findings in lungs. The study used thirty males Rattus novergicus, whic...

The high stunting rate in Indonesia encourages the Government to make efforts to accelerate stunting reduction. One of the efforts is by assisting universities to the local government in Bojonegoro District. The purpose of this activity is to find out the factors that cause families to be at risk of stunting in Bojonegoro District. The research met...

In developed countries, contamination of soil due to industrial activities and illegal toxic waste disposal has been identified as major environmental problems. Established mechanisms for iden-tifying, prioritizing, characterizing, assessing, and improving soil conditions have been imple-mented to reduce risks to human health and environmental rece...

Pesantren merupakan lembaga pendidikan islam yang memerlukan air bersih yang cukup untuk keperluan sanitasi dan air minum bagi santri. Pengabdian masyarakat ini bertujuan untuk meningkatkan pemahaman, keinginan untuk membangun, dan keinginan untuk menggunakan sistem pemanenan air hujan (SPAH) di PP Addurrriyah. PP Addurrriyah dipilih sebagai model...

Corona Virus Disease2019 (COVID-19) is a disease that shocked the world at the end of 2019. Based on data, positive cases of Covid-19 in Indonesia on July 29, 2021 reached 3,331,206 people, with 3,240,654 Covid-19 patients recovering and 90,552 Covid-19 patients dying. Meanwhile in the city of Surabaya there were 52,782 confirmed cases with 50,894...

The area of polluted water expands day by day due to the rapid increase in agricultural activities. Application and the excessive amount of fertilizer in the agricultural activity can reduce the water quality. One of the alternative way to remove pollutants from polluted water is phytoremediation technique. This paper attempt to evaluate the potent...

The performance of extracted coagulant from the sugarcane bagasse was tested using synthetic wastewater for turbidity removal. Sugarcane bagasse was selected because it is available in abundance as a waste. This study was carried out to analyze the effect of the extraction process in optimizing the active coagulant agent of bagasse as a natural coa...

The formation of bulking and foaming in biological wastewater treatment could cause a series of operational issues with biomass and effluent quality, ultimately affect the treatment performance of the system. The essential parameters influencing the growth of bulking and foaming bacteria are comprehensively summarised in this paper. Existing bulkin...

Wastewater recycling plays an important role in minimizing water loss. The recycled waste-water can be utilized for many purposes from irrigation to portable water supply. Numbers of wastewater treatment system have been applied in Malaysia to achieve quality in meeting the intended purpose of wastewater recycling. Although there are many studies r...

Purpose of Review The development of various type of wastewater treatment technologies provides significant supports for environmental protection. Biofiltration, an attached growth system, shows remarkable performance in treating different types of wastewater worldwide. Differing from the existing comprehensive reviews published thus far, this revi...

Purpose of Review Increasing environmental problems demand mitigation solutions to fulfill sustainability development goals. Microalgae offer possibility of valorizing the CO2 and wastewater-derived nutrients to produce numerous industrial bioproducts. However, developing self-sustained systems for the complete valorization of algal biomass into va...

There have been many literature reviews on the presence of MPs in water, but study on the presence of MPs in the air and literature reviews on it have not been done much. study on MPs pollution needs to be collected and summarized into one literature review so that this information is easy to find and not scattered. The results found 16 research ar...

This study focuses on the settling profile and chemical characteristics of latex aerobic granules cultivated from rubber industrial wastewater. Latex‐based aerobic granular sludge (AGS) was cultivated using sequencing batch reactor (SBR) in supplemented with synthetic wastewater (SW) as nutrients feeding for biogranulation process. The bioreactor w...

In textile industries, residual dyes and heavy metals are usually released into environment via wastewater effluent. Because of their negative effects not only to environment but also to human health, these contaminants are required to be removed from water environment. To achieve the effective adsorption of dye and heavy metal, the adsorption mech...

This study aimed to analyze water quality and control water pollution in the Pucang River in Sidoarjo Regency. The method was used to identify water quality of the 11 parameters and compared them the Government Regulation number 22 of 2021 about water quality standards in Indonesia. Secondary data from 2018 to 2020 were used in this study. Determin...

Exposure of carbon monoxide (CO) released by insect repellent has a negative impact on health by forming carboxyhemoglobin (CO‐Hb) as a trigger for oxidative stress in the human body. Therefore, the objective of the study was to investigate the effect of commercial anti‐mosquitos on CO‐Hb and malondialdehyde (MDA) levels in the blood. Effect of ele...

A potential biochar from pepper stems (PS-biochar) was developed via a one-stage pyrolysis process of precursor at 700 °C and employed to adsorb ibuprofen (IBP) in water media. Results showed that PS-biochar was a carbonaceous mesoporous adsorbent with well-developed porosity (SBET= 727.5 m²/g and VTotal= 0.36 cm³/g) and rich surface functional gro...

The emergence and continual accumulation of industrial micropollutants such as dyes, heavy metals, organic matters, and pharmaceutical active compounds (PhACs) in the ecosystem pose an alarming hazard to human health and the general wellbeing of global flora and fauna. To offer eco-friendly solutions, living and non-living algae have lately been id...

The present study aimed to synthesize hydroxyapatite (HAp) from milkfish (Chanos chanos) bone by simple heat treatments ranging from 600 to 800 °C. The yield and color of synthesized powders before and after heat treatment were analyzed. The synthesized powders were characterized using Fourier transform infrared spectroscopy (FTIR) to identify the...

The present work investigated the properties of long fibers derived from oil palm empty fruit bunches (OPEFB) for the potential woven and non-woven textiles production. Several characterizations such as XRD, FTIR, SEM-EDX, DSC, and mechanical testing were carried out to understand the properties comprehensively. This study found that the OPEFB has...

Sulfur dioxide (SO2) emission into the atmosphere brought by the burning of fossil fuels in the industries posed significant negative effects on the environment and human beings. Adsorption using activated carbon from agricultural wastes is a viable method commonly used to counter this major problem. SO2 breakthrough experiment was conducted on a f...

Alkaliphilic cyanobacteria are suitable candidates to study the effect of alkaline wastewater cultivation on molecular metabolic responses. In the present study, the impact of wastewater, alkalinity, and alkaline wastewater cultivation was studied on the biomass production, biochemical composition, and the alkalinity responsive molecular mechanism...

Flood caused by overflowing water from river has become a major issue in Southeast Asia, as it has caused economic losses and deaths. Therefore, the present work aims to propose an alternative approach for morphometric analysis of the Ciliwung River Upper Stream (CRU) without the geographic information system technique use for flood prevention stra...

This study proposed a novel and low-cost adsorbent prepared from dredging sediment (DSD) for effective removal of dye in aqueous solutions. The adsorption efficiency and behavior of the DSD adsorbent toward the crystal violet (CV), a cationic dye, were investigated via batch experiments. The results showed that DSD samples contain mainly clay miner...

The problem of water shortages faced by many countries including the country that having sufficient water source needs to be provided a practical engineering solution. The reliability analysis of rainwater harvesting system (RWHS) installed at the commercial building of AEON Taman Universiti located in Johor Barhu city of Malaysia was based on the...

The release of silver nanoparticles (AgNPs) from consumer products into an environment has become a central issue for many countries. Despite that the fate and behaviors of AgNPs incorporated into a wastewater have been investigated by building a model of wastewater treatment process, the transport and retention behaviors of AgNPs influenced by the...

To elucidate the efficacy of eco‐enzyme in mediating contaminated waters, an onsite investigation was conducted spanning over a 5‐month duration on three ponds receiving iron‐containing groundwater continuously. Eco‐enzyme was applied at designated dosages and time. Water samples were collected fortnightly for in situ monitoring of water quality. P...

The palm oil mill effluent (POME) from palm milling oil activities is discharged into various water bodies which poses several environmental problems including turbidity, increases COD and BOD, adds oil and grease, increases total nitrogen, and other pollutants. Therefore, it requires effective treatment to remove the pollutants before disposal. Th...

Biofiltration is a promising wastewater treatment green technology employed to remove various types of pollutants. The efficiency of biofiltration relies on biofilm, and its performance is significantly influenced by various factors such as dissolved oxygen concentration, organic loading rate, hydraulic retention time, temperature, and filter media...

Purpose of Review Effluent organic matter (EfOM) is a blend of organic matter, microbial constituents, biological metabolites, and synthetic chemicals which is originated mainly due to anthropogenic activities and is a matter of emerging environmental concern. The presence of EfOM poses a major challenge in the wastewater treatment processes. This...

Purpose of Review The use of conventional chemical coagulant in treatment of wastewater is gaining great attention. Drawbacks related to the prolonged effects on human health and environment due to the generation of by-product non-biodegradable sludge are becoming the latest topics. Transition from chemical to natural coagulant can be a good strate...

Palm oil mill effluent (POME) is one of the environmentally hazardous sources of acidic wastewater containing a high quantity of toxic organic and nitrogenous pollutants. A proper eco-friendly technique such as the use of acidophilic strain has been found promising in the bioremediation of POME. This paper comprehensively reviews acidophilic bacter...

The excessive amount of phosphate in domestic wastewater treatment plant effluent must be removed to protect the natural environment of healthy aquatic ecosystem. Though a number of adsorption techniques with various low-cost adsorbent have been proposed, it is still ambiguous how the iron-coated waste mussel shell properties affect the adsorption...

Producing bio-based chemicals is imperative to establish an eco-friendly circular bioeconomy. However, the compromised titer of these biochemicals hampers their commercial implementation. Advances in genetic engineering tools have enabled researchers to develop robust strains producing desired titers of the next-generation biofuels and biochemicals...

Physicochemical technologies to control biofouling in the membrane bioreactors (MBRs) have shown to be incapable of removing all biofouling layers. Novel biological approaches are needed to control biofouling. This paper aims to comprehensively review the recent advances in bacterial quorum quenching as an effective anti-biofouling strategy in the...

It is important to develop renewable bio-coagulants to treat turbid water and efficient use of these bio-coagulants requires process optimization to achieve robustness. This study was conducted to optimize the coagulation process using bio-coagulant of deshelled Carica papaya seeds by employing response surface methodology (RSM). This bio-coagulant...

The occurrence of newly emerging contaminants such as estrogens in water environment has the potential negative effects to human health as well as the surrounding wildlife. This demands efficient approaches for their removals from the water environment. Among all feasible solutions, biodegradation shows promising prospects to remediate estrogens fr...

Purpose of Review The use of algae for remediation of toxic pollutants seems to be promising since they also provide some advantages such as the production of valuable products and their capability to capture CO2 during the photosynthesis, which potentially decrease greenhouse gas emission. This paper reviews the evidence for highlighting the effec...

Currently, anaerobic sludge digestion (ASD) is considered not only for treating residual sewage sludge and energy recovery but also for the reduction of antibiotic resistance genes (ARGs). The current review highlights the reasons why antibiotic resistant bacteria (ARB) and ARGs exist in ASD and how ASD performs in the reduction of ARB and ARGs. AR...

The present study aimed to determine the degradation and transformation of three-ring PAHs phenanthrene and anthracene by Cryptococcus sp. MR22 and Halomonas sp. BR04 under halophilic conditions. The growth progress of Cryptococcus sp. MR22 and Halomonas sp. BR04 on anthracene and phenanthrene was monitored by colony-forming unit (CFU) technique. T...

Purpose of Review This paper aims to critically review the current status of groundwater usage from the point of view of pollutant control and integrated management. Recent Findings This paper has shown that sustainable efforts must be encouraged to minimize the arsenic content from all the possible sources before entering the groundwater system....

This paper reviews the current status of biodiesel and discusses the challenges and prospects of biodiesel in Asian countries. Despite the benefits by biodiesel, the widely used biodiesel in Asian countries was still low compared to petrodiesel because of several issues including high feedstock cost, insufficient feedstocks, high viscosity of biodi...

The release of synthetic dye into the environment causing abnormal growth of phytoplankton may lead to a decline in the photosynthetic performance of aquatic ecosystem. Scientific knowledge of Remazol Brilliant Blue R (RBBR) decolorization is essential for designing the engineered bioremediation systems of employing fungal mycelium. The biodegradat...

The development of antimicrobial food packaging is needed for food preservation and quality maintenance. Silver nanoparticles (AgNPs) have been widely used as an antimicrobial agent in food packaging technologies. However, the risks associated with their potential migration into foods are a major concern. This paper comprehensively reviews the use...

Development of textiles functionalized with nanoparticles has received growing interest. A wide range of nanoparticles can be deposited on textile fibers, which brings new properties to the final product. Although many methods for the deposition of silver nanoparticles (AgNPs) on textiles are possible, the current trend focuses on how this can be c...

Wastewater treatment plants (WWTPs) become a main contributor of polycyclic aromatic hydrocarbons (PAHs) and their substitutions present in freshwater systems. This paper reviews PAHs and their substitutions in full‐scale WWTPs including their fate and behaviors, analytical techniques, biological treatments, feasibility examination, and modeling. I...

In this study, removal of phosphate (PO43−) from aqueous solutions using waste mussel shell (WMS) was examined. The physicochemical characteristics of WMS were identified. In the batch experiments, the effects of contact time and adsorbent dosage (m) on the PO43− adsorption by the WMS were scrutinised. The maximum PO43− removal efficiency (E) was 8...

Discharge of heavy metals released from industries has adverse effects on the environment. The development of a method that can safely remove heavy metals is still challenging. Therefore, the aim of this study is to propose catalytic chelation technique for the removal of mercury (Hg). Removal of Hg was carried out using the sodium acetate (CH 3 CO...

The present work aims to investigate a green synthesis of AgNPs using Muntingia calabura leaf extract as reducing and stabilizing agents. The AgNPs formation was monitored using UV-Vis spectrophotometer. Characterisations of AgNPs size and shape were observed by TEM. The elemental analysis was analyzed using XDS. The maximum surface Plasmon resonan...

This study deals with the synthesis of zeolite from natural kaolinite using hydrothermal treatment and evaluation of its phase transformation behaviors. The synthesized zeolites were modified with silver ion by using the ion exchange method for the enhancement of antibacterial properties. The characterizations were performed by using X‐ray diffract...

The present study aims to fabricate and evaluate the physio-chemical features of biocomposites filled with natural resources. Kenaf was used as a natural resource model and prepared by mechanical milling and sieving to obtain short fiber form. Virgin and recycled acrylonitrile butadiene styrene (ABS) were used as biocomposite matrix. Granular bioco...

Permanent deposition of silver nanoparticles (AgNPs) on the surface of textile fibre is essential for the long-term medical application of antibacterial textile products. This study aims to propose a new green method of using the pure leaf extract of Muntingia calabura and to create a permanent deposition of AgNPs on the fabric surfaces of cotton,...

A new green deposition of silver nanoparticles (AgNPs) on poly mers was proposed in this work. In-situ synthesis of AgNPs on poly mers was achieved via a green procedure using natural reducing agents, which are Ageratum conyzoidez and Mikania micrantha. Several characterizat ions of the treated polymers such as color transformation, surface morphol...

Silver nanoparticles (AgNPs) have been used in a wide range of industrial products. The release of AgNPs as antimicrobial agent into the river or lake can raise the ecological concern because they have been proven to be associated with toxicity of the aquatic animals. An exclusive review of AgNPs adsorbed by the various synthetic and natural adsorb...

This study deals with the development of a method to estimate the stock projection for Linggiu Reservoir (LR) under climate change scenarios. This study found that the projected rainfall data for the reservoir was comparable and very close to the observed rainfall data. Based on the LR stock projection using average and minimum rainfall projected u...

This study aims to propose a new green method for the deposition of silver nanoparticles (AgNPs) on textiles without the use of chemical compounds as binders. The deposition of AgNPs on textiles was achieved by immersing textiles in silver nitrate solution before adding with a natural reducing agent obtained from the extraction of Mikania micrantha...

ABSTARCT: Weather radar is an alternative tool for estimating high resolution precipitation through the empirical relationship between the radar reflectivity, Z, and the rainfall rate, R, known as Z-R model. High accuracy of quantitative precipitation estimation (QPE) is strongly required in hydrological modelling and flood management. This study h...

The aim of this study was to determine the abundance and concentration of polycyclic aromatic hydrocarbons (PAHs) in the sediments of the Mahakam River, Indonesia. Physicochemical analysis of sediment quality parameters revealed that the values for pH, nitrate, ammonium, phosphate, and oil/grease in the sediments were higher than the recommended li...

Students' perception of assessments can serve as a guiding light for improving overall educational practices. A questionnaire was collected from 80 engineering student to discover students' perceptions on different type of assessment and their overall perceptions of various type of assessments advantages in enhancing learning experiences. The major...

Due to environmental concern, the research to date has tended to focus on how textile dye removal can be carried out in a greener manner. Therefore, this study aims to evaluate the decolorization and biotransformation pathway of Mordant Orange-1 (MO-1) by Cylindrocephalum aurelium RY06 (C. aurelium RY06). Decolorization study was conducted in a bat...

This work was aimed to evaluate the capability of activated carbon prepared from Bamboo (Bambusa bambos) stems (BS) to remove two reactive dyes, which are Malachite Green G (MGG) and Reactive Red 2 (RR2) from aqueous media. The presently proposed activated carbon was prepared using the chemical activation. The activated carbon was also characterize...

This work was aimed to evaluate the capability of activated carbon prepared from Bamboo (Bambusa bambos) stems (BS) to remove two reactive dyes, which are Malachite Green G (MGG) and Reactive Red 2 (RR2) from aqueous media. The presently proposed activated carbon was prepared using the chemical activation. The activated carbon was also characterize...